close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2127515

код для вставки
Aug. 23, 1938.
c. w, HAZELETT
‘2,127,515
METHOD OF PRODUCING SOLID METAL OF SUBSTANTIALLY CONSTANT
CROSS SECTION THROUGHOUT ITS LENGTH DIRECTLY FROM A
MASS 0F MOLTEN METAL AND To AN APPARATUS THEREFOR
5 Sheets-Sheet l
Filed June 7, 1957
‘
V
INVENTOR.
CLARENCE VKHHZELETT
BY
ATTORNEY.
Aug. 23, 1938.
c. w. HAZELETT
2,127,515
f
,
METHOD OF PRODUCING SOLID METAL OF SUBSTANTIALLY CONSTANT
CROSS SECTION THROUGHOUT ITS LENGTH DIRECTLY FROM A
MASS OF MOLTEN METAL AND TO AN APPARATUS THEREFOR
Filed June '7, 1937
5 Sheets-Sheet 2
IN VENTOR.
CLARENCE VY. HR ZELETT
BY
‘
ATTORNEY.
‘
Aug. 23, 1938.
.Do
w
w
H
O,
'
127,515
v
2,
TIALLY CONS ANT
NTE CTLY FROM
US THEREFO
wMHLd UAHMJTNAuMIDm LOLEAFm"NSHAWN SD“mmA
METHOD OF PRODUCI C
F .S
cnoss SECTION
O8
MASS 0F MOLTEN M
5 Sh
e
TARW
Sh
1; s
INVENTOR.
CLARE/veg w. HA ZEL ETT
_
BY
Aug. 23, 1938.
c. w. HAZELETT ,
METHOD OF PRODUCING SQLID METAL
CROSS SECTION THROUGHOUT ITS
MASS OF MOLTEN METAL AND TO
Filed June '7,
BY
‘
l
.
2,127,515
OF SUBSTANTIALLY CONSTANT
LENGTH DIRECTLY FROM A
AN APPARATUS THEREFOR
1937
5 Sheets-Sheet 4
_
(1. am
ATTORNEY.
Aug. 23, 1938.
l
c, w, HAZELETT
2,127,515
METHOD OF PRODUCING SOLID METAL OF SUBSTANTIALLY CONSTANT
CROSS SECTION THROUGHOUT ITS LENGTH DIRECTLY FROM A
MASS OF MOLTEN METAL AND.TO AN APPARATUS THEREFOR
vFiled June '7, 1937
5 Sheets-Sheet _5
l l il
_
'
INVENTOR.
CL/‘TRE/VCE VV.
BY
@(xm
ATTORNEY. '
*' ~ 2,127,515
Patented Aug. 23,. 1938
UNITED STATES2,127,515PATENT
OFFICE
METHOD OF PRODUCING SOLID METAL OF
SUBSTANTIALLY CONSTANT CROSS SEC
TION THROUGHOUT ITS LENGTH DI
REOTLY FROM A MASS OF MOLTEN‘
METAL AND TO AN APPARATUS THERE
FOR '
'
Clarence W. Hazelett, Greenwich, Conn.
Application June 7, 1937, Serial No. 146,792
35‘ Claims. v(Cl. 22—200.1)
Broadly stated, according to the principles of
The presentinvention relates to methods and
apparatus for producing metal products directly my invention I provide an end dam constituted
from molten state, and, more particularly, to of molten metal. I prefer to provide this molten
metal dam as a part of the bath or pool of molten
new and improved methods and apparatus of the
character described.
'
metal employed for the production of the metal
article. This can be accomplished for example
by providing a member having a pocket-shaped
'
I have discovered an improved method of com
pensating for the increased cooling caused by the
end dams of rolls and an improved method of
cavity therein pressed against the side surface of
the rolls in the placeof the conventional dam
producing strip, sheet and other solid products
10 directly from molten metal.
structure. This pocket-shaped cavity isprefer 10
’
It is an object of the present invention to
provide an improved process and apparatus for
producing metal products directly from molten
metal which is satisfactory and is capable of
16 producing commercial products on an industrial
scale.
‘
It is another object of the present invention
to provide a novel and improved apparatus for
producing metal products directly from molten
20 metal in which an end dam of such character
is provided that substantially no cooling e?ect is
ably provided with a refractory lining and is pre
heated by means of a gas flame or'some other
heating means.
I preferably fill this pocket
shaped cavity with a molten metal of the same
character and temperature as the one employed 15
for the production of the metal strip from the
same source as the main metal bath or pool above
the bight of the rolls. In this manner a dam
constituted of molten metal is obtained having
substantially the same temperature as the main 20
bath or pool so that cooling of the terminal por
tions. of the bath adjacent to the edges of the
exerted in the marginal or end portions of the
rolls is practically completely eliminated.
molten metal bath or pool.
I have found that the dam member having the
It is a further object of the invention to pro-l
pocket-shaped cavity has to be adjustable both 25
vide
an
improved
end
dam
for
a
mill
producing
25
metal products directly from molten metal‘, said in horizontal and in vertical direction in, order
obtain the best‘results. Thus, an air cylinder
end dam being constituted of molten metal and to
having substantially the same temperature as the may be provided for pressing the pocket-shaped
member against the side surface of the rolls with
metal bath above the bight of the rolls.
pressure and an additional vertical screw 30
The invention also contemplates an improved yielding
30
adjustment
be provided to permit raising
mill for producing metal products directly from and loweringmay
the pocket and thereby the molten
molten metal embodying a molten metal end dam
end dam with respect to the rolls. 1' have made
which is simple in construction and which may the
surprising discovery that best results are ob
be readily and satisfactorily operated on an in-.
tained when the bottom of the pocket is raised
35 dustrial scale without requiring critical adjust
above the point of maximum approach of the rolls
ment of the thermal conditions and without com
so as to leave an open space immediately above
plex and expensive control equipment.
Other and further objects and advantages of the bight of the rolls. The molten metal poured
the pocket from the source of molten metal
the present invention will become apparent from into
or from a distributing box will ?ow into the space 40
40 the following description taken in conjunction
with the accompanying drawings, in which
Fig. 1 illustrates the general view of a mill
embodying the principles of the present inven
tion;
Fig. 2 depicts a vertical sectional View across
the rolls shown in Fig. 1;
‘
‘Fig. 3 is a longitudinal sectional view of the
mill;,
'
755
cal movement thus preventing the disturbance of
the metal already frozen in the mill by the in
coming stream. This desirable condition may
be further supplemented and assisted by intro 4K
ducing the metal into the pocket shaped end
dam above the bight of the rolls underneath the
surface of the bath and in a-substantially hori
zontal direction by means of a nozzle having
-
Fig. 4 is a top plan view of the mill;
50
between the rolls without any appreciable verti~ _
horizontal outlet openings. In this manner the
molten metal mass contained in the pocket-like
cavity represents a dam constituted of molten
the present invention; and
metal having substantially thesame character
Fig. 6 depicts a conventional torque indicator temperature as the main bath or pool of
employed in connectionwith the mill embodying and
metal which in fact forms an extension of the 55
Fig. 5 illustrates a diagrammatic view some
what fragmentary, of a modi?ed embodiment of
the invention.
-
2
2,127,515
main bath or pool beyond the edges of the rolls.
rection, as it will be more fully described here
This molten metal dam has the considerable ad
inafter.
vantage that it has the same temperature as the
main bath of molten metal and therefore does
'
From the preceding description the operation
of my improved apparatus and of my molten met
not cause any appreciable‘icooling of the'main ' al end dam will be readily understood by those
bath or pool at the terminal portions thereof. I skilled in the art. Distributing box‘ I0 is continu
prefer to so adjust the molten end dam that its ously supplied with‘ molten metal of preferred
bottom is‘ slightly above the point of maximum character and temperature from a conventional
approach, of the rolls. This will permit the source. From distributing box ID, a metal will
10 solidi?ed metal to extrude laterally to a small ?ow throughnozzles l4 and I1 into the pockets
extent producing a slightly roughened edge on l5 and into the space between the rolls, it will
the product which may be trimmed off without be readily observed from the drawings that the.
any di?iculty. Preferably, the thermal condi~ molten metal poured into pockets I5 will flow into
tions are so controlled that the temperature of the space between the rolls without any appreci
15 the solidi?ed metal at‘the bight of‘ the rolls is able vertical movement thereby preventing any
substantially the same in the zones adjacent to ‘detrimental disturbance of the metal already
the dams and the intermediate zones of the frozen in the mill by the incoming hot stream.
Of course, the same applies to metal entering di
molten bath. This can be accomplished, for ex
ample, by feeding more molten metal to the zones ‘ rectly into the space between the rolls from the
distributing box l0 through the nozzle H, in view
20 adjacent to the dams than to the intermediate
zones, and by varying said additions of molten of the horizontal arrangement of the outlet open
ings in nozzle l2. The molten metal mass con
metal with changes indicated by a torque indi
tained in pockets [5 represents a molten metal
cator operatively associated with the rolls.
end dam which is directly ‘contiguous with the
I have also discovered that the distance be
bath or pool in the space between the rolls. The
25 tween the rolls, which substantially determines
the gauge of the product can be adjusted with height of this molten metal dam may be adjusted
by means of screw 8 and is preferably raised above
great accuracy by means of wedges slideably in
serted between the bearings to keep them apart. the point of maximum approach of the rolls so
The mill is preloaded by putting some pressure as to leave an open space at point 18.
30 on the screws provided for this purpose, the
wedges between the bearings permitting to set
them accurately. This greatly improves the ac
curacy of the gauge of the product, and permits
to maintain the gauge between very close limits.
The invention will now be described more fully
35
to those skilled in the art, reference being had
to the accompanying drawings illustrating by way
of example a preferred embodiment of my in
vention in the form of a mill producing solid
40 strip-like metal articles directly from molten
metal.
Referring to Figs. 1 to 4, a horizontal rolling
mill is illustrated comprising a pair of rolls l
rotatably mounted in supports 2 in conventional
45 manner.
At both ends of the rolls a dam sup
porting member 3 is provided having a pocket
shapedrefractory lining 4 adapted to receive and
to hold a body of molten metal which is to act
as an end dam. Support 3 is movably mounted
in a cradle 5 and is pressed against the end sur
face of the rolls by‘means of an air cylinder 6.‘
The entire unit is adjustable in the vertical di
rection by means of a slide member ‘I and a
screw 8. The complete end dam structure is pre
55 heated and is maintained at a preferred high
temperature by means of a ?ame emerging from
50
a gas pipe 9.
.
Above the bight of the rolls I, a distributing
box [0, is provided which providesv an auxiliary
60 source or reservoir of the molten metal prior to
its introduction into the bight of the rolls and
into the dam pockets. Distributing box 10 is
supplied with molten metal through a pipe II
and a funnel-like member l2 and is maintained
at a high temperature by means of gas jets l3.
At each end of the distributing box a nozzle I4
is provided through which the molten metal may
?ow out into the pockets l5 wherein it changes
its direction and ?ows back into the space I6
70 between the rolls in a substantially horizontal
direction and forms a main body or pool of molten
metal therein. Likewise, a nozzle I‘! provided in
the central portion of distributing box 10 dis
charges part of. the molten metal towards the
center of the mill in a substantially horizontal di
In the case low melting point metals are em
ployed, the refractory lining 4 may be omitted
since the metal stream from nozzles l4 heats
10
15
20
25
80
the end dam proper 3 to a su?‘lciently high tem
perature to prevent freezing of any excess metal
between thevlimits of the ends of the rolls. In 35
other words, the molten metal bath is extended
beyond the ends of the rolls and forms liquid end
dams having substantially the same temperature
as the main body‘of metal above the bight of the '
rolls.
7
-I have found that it is very desirable to provide
for yielding displacement of the members 4, 3
and 5 and of the molten end dam contained
therein under pressure. This yielding and re
' .silient displacement is made possible by the pro 45
vision of the air cylinder 6 which permits dis
placement of cradle 5 in the horizontal direction
and is adapted to compensate for. displacements
of the rolls in the horizontal direction, as are,
for example, caused by heat expansion. I have 50
also found that excessive pressures may be built
up close to the point of maximum approach of
the rolls, this point being designated by reference
character l9. This is particularly the case when
extremely refractory- metals are worked. To 55
avoid ‘these excessive pressures, the stationary
end dam is vertically adjusted by means of screw
8 so that its bottom is slightly above the point
of maximum approach of the rolls whereby met
al is permitted to extrude laterally to a slight 60
extent. This will cause production of a slightly
rough edge on the strip which may be trimmed
off without difficulty during the further prog
ress of the process. The height of the dam is so 65
adjusted that the metal is either plastic or is
entirely solidi?ed before it reaches the bottom
of the dam designated by reference character I
20. I designate this type of dam construction as
an “open crotch” end dam. This type of con 70
struction is particularly important in the produc
tion of a strictly cast strip of metal which may
be subsequently rolled. ' If, due to excessive solid
i?cation, any pressure builds up at theend of the
roll, this will force the yieldably mounted rolls
2,127,515
3
apart and will permit the metal to run through
creasing amount, by any biasing means suitable
in a molten condition in the center of the mill.
The distance between the rolls can be adjusted
with great accuracy by means of wedges 23 slide
ablyinserted between the terminal surfaces 24 of
ventional character of this arrangement, its op
eration will be readily understood without any
the ‘hearings to keep them apart. The mill is pre
loaded by putting some pressure on screws 25 pro
vided for this purpose, after wedges 23 have been
adjusted by means of screws 22. This permits to
set the rolls with great accuracy and to maintain
the gauge within very close limits.
Fig. 5 illustrates a diagrammatic view of a
modi?ed embodiment of the present invention.
Essentially, av pair of rolls, 30 and 3i, are provided
'in juxtaposed and cooperating relation. A main
bath 32 is located above the bight of the rolls and
for the purpose, as in a scale.
In view of the con
[further explanation.
I have found that the importance of compen
sating for the excess cooling due to the end dams
or the ?anges of the rolls acting as end dams be
comes greaterl-as more refractory metals are em
ployed. I have found that particularly in the 10
case of mills less than 12" in width, di?iculty is
experienced-in producing a satisfactory strip be‘
cause of the high percentage of cooling due to
the above factors. In a mill 8" in width for use
with brass, unless some other form of compensa
tion is used, it was heretofore necessaryvto pour
' auxiliary baths 33 and 34 forming molten end . practically all of the brass close to the ends of the
dams are maintained at the ends of the rolls.
Thin pouring channels 35 and 36 are provided be
yond the ends of the rolls and below the tops of
the rolls for feeding molten metal to the end dams
and to the main bath from main inlet channel 31
which is connected to the ends of the pouring
channels and is supplied with molten metal from
a suitable source (not shown). As it will be
readily observed from the drawings, main bath 32,
auxiliary baths 33 and 34, pouring channels 35
and 36 and main inlet channel 31 form a com
pletely closed electrical circuit having substan
tially the same surface level. A laminated iron
core 38 is provided around the main inlet channel
. and has a coil 39 associated therewith.v C011 39,
which is connected to a source of alternating cur
rent 40 permits to induce powerful alternating
currents in this closed electrical circuit and makes .
possible to heat said circuit and the metal therein
to a preferred temperature. Preferably, pouring
channels 35 and 36 have a smaller cross section
than main inlet channel 31, in order to provide a
greater heating effect therein.
40
The advantage ofv this modi?ed embodiment is
rolls in order to avoid excessive solidi?cation at
this point with consequent damage to the mill by
upsetting the edges of the rolls. Excessive cool 20
ing and solidi?cation of the metal at the ends of
the rolls would cause folding of the metal which
freezes on the ?ange or end dam and produced a
strip which was unsound for some distance from
the edges. In some cases the pressure was suin 25
cient to force the ?anges off the rolls or to other
wise damage the rolls.' The molten metal end
dam according to the principles of the present
invention completely eliminates all of these di?i
culties and permits producing a satisfactory strip 30
,of any width even from highly refractory metals
in a simple and efdcient manner with practically .
no danger of damage or injury to the rolls or to
the other elements of the mill.
*
In practical operation, I have found it very 85
advantageous to pour all of the metal in the end
dam,‘ particularly in mills having a width of at
least‘two feet. This assures that no; molten
metal will enter the bath appreciably above its ‘Y
operating surface. The yieldable end dam 40
mounting becomes extremely important in such
wide mills and particularly in casting mills in
tively maintained in the complete circuit of‘ which it is yieldable to have hot rolls. The yield
molten metal. All of the molten metal enters the ing mounting forthe end dams readily compen
main bath in an entirely horizontal direction and sates for the expansion of the rolls and prevents 45
the occurrence of excessive stresses at the roll
from the ends thereof and the possibility of detri
mental vertical streams between the roll ends is ends.
I claim:
completely prevented. Moreover, the induction
1. The method of producing, solid metal of
heating as employed in this modi?ed embodiment
of the invention provides simple and extremely substantially constant cross section throughout 50
50 accurate control of the temperature of the bath
its lengthdirectly from a mass of molten metal
which comprises establishing a main bath of
at all of its points.
As those skilled in the art know, in a mill of molten metal between a pair of adjacent and op
‘the character described, the torque required to eratively associated rolls, restraining said bath
drive the mill follows the ratio between the extent against lateral extension at two surfaces beyond 55
of solidi?cation and the spacing of the rolls. the ends of said rolls to provide two auxiliary
Therefore, I found it particularly advantageous baths contiguous with the end of said main bath,
to provide means to indicate continuously the and rotating said rolls to cause the ejection of
torque required to drive the mill. This torque solidi?ed metal from the bight of the rolls,
indicator means may be of conventional form, .said metal having a width substantially equal to
60 such as, for example, is disclosed in my U. S. Pat
that of said rolls and less than the combined
ent No. 2,058,447. An indicator of this form is lengths of said main and said auxiliary baths.
2. The method of producing solid metal of
shown in Fig. 6 and essentially comprises a mill
motor 4| mounted on a base 42 pivoted at one end substantially constant cross section throughout
that substantially the same surface level is posi-'
at 43 and resting at the other end on the knife
edge 44. Knife edge 44 is carried on the short
arm of a lever 45 pivoted at 46 and having its long
' arm 41 connected by a link 48 to the short arm 49
of a lever 50. This lever in ,turn is pivoted at 5|
and has its long-arm 52 engaging a reciprocating
70 bar 53. One side of bar 53 carries a rack 54 which
engages a pinion 55 to which is secured an indi
cator arm 56 co-operating with scale 51 of an
indicator 58. Depression of the free end of the
75 base 42 is opposed continually in constantly in
its length directly from a mass of molten metal 65
which comprises establishing a space above the
bight of a pair of operatively associated rolls and
between a pair of dam surfaces at a distance
from the ends of said rolls, feeding molten metal
to said space to maintain a main bath of molten
metal and an auxiliary bath forming a molten
end dam at each. side of said main bath, and
rotating said rolls to cause the ejection of solidi
?ed metal from the bight of the rolls, said metal _
having a width substantially equal to that of
70
4-
/
2,127,515
‘ said rolls and less than the combined length of
said main and said auxiliary baths.
3. The method of producing solid metal of sub
stantially vconstant cross section throughout its
length directly from a mass of molten metal
which comprises establishing a space above the
the ends of said main bath, continuously feeding
molten metal to said main, and said auxiliary
baths without disturbing the. metal already
frozen in the bight of the rolls, androtating said
rolls to cause the ejection of solidi?ed metal from
the .bight of the rolls, said metal having a width
bight of a pair of operatively associated rolls and
substantially equal to that of said rolls and less
between a pair of dam surfaces at a distance
than the combined lengths of said main and said
from the end of said rolls, feeding molten metal
auxiliary baths.
to said space to maintain a main bath of molten
‘metal and an auxiliary bath forming a molten
end dam at each side of said. main bath, said
molten end dams having substantially the same
temperature and character as said main bath,
15 and rotating said rolls to cause the ejection of
solidi?ed metal from the bight of the rolls,
said metal having a width substantially equal to
that of said rolls and less than the combined
lengths of said main and said auxiliary baths.
4. The method of producing solid metal of sub
stantially constant cross section throughout its
length directly from a mass of molten‘ metal
which comprises establishing a main bath of
molten metal between a pair of adjacent and
operatively associated rolls, providing a dam
constituted of molten metal at each end of the
rolls to laterally restrain said main bath between
the rolls and to establish a pair of auxiliary baths
contiguous with'the ends of said main bath, and
rotating said rolls to cause the ejection of solidi
fled metal from the bight of the rolls.
5. The method of producing solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal
35 which comprises establishing a main bath of
molten metal between a pair of adjacent‘ and
operatively associated rolls, providing a dam of
molten metal at each end of the rolls to laterally
‘restrain said bath and to establish a pair of
auxiliary. baths contiguous with the end of said
main bath, said auxiliary baths being constituted
of molten metal having substantially the same
character and temperature as said main bath,
maintaining said molten metal to a selected
heightqin said main and auxiliary bath, and
rotating said rolls to cause the ejection of solidi-,
fled metal from the bight of the rolls, said metal
having a width substantially equal to that of said
rolls and less than the combined lengths of said
50 main and said auxiliary baths.
" 6. The method of producing. solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal
which comprises establishing a main bath of
molten
metal between a pair of adjacent and op
55
eratively associated rolls, providing a dam con
stituted of molten metal at each end of the rolls
to laterally restrain said bath and to establish
a pair of auxiliary baths contiguous with the
60 ends of said main bath, feeding molten metal
to said baths to maintain a selected height there
in, and rotating said rolls to cause the ejection
of solidified metal from the bight of the rolls
said metal having a width substantially equal to
that of said rolls and less than the combined
lengths of said main and said auxiliary baths.
'1. The method of producing solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal
which comprises establishing a main bath of
molten metal between a pair of adjacent and
operatively associated rolls, providing a dam con
stituted of molten metal at each end of the rolls‘
to laterally restrain said main bath and to es
8. The method of producing solid metal of sub? '
stantially constant cross section throughout its
length directly from a mass of molten metal which
comprises establishing a main bath of molten
metal between a pair of adjacent and operatively
associated rolls, providing a dam constituted of 15
molten metal at each end of the rolls to laterally
restrain said main bath and to establish a pair
of auxiliary baths contiguous with the ends of said
main bath, continuously feeding molten metal
to said baths underneath the surface thereof and 20
in a substantially horizontal direction, and ro
tating said rolls to cause the ejection of solidi?ed
metal from the bight of the rolls said metal hav
ing a width substantially equal to that of said
rolls and less than the combined length of said
main and said auxiliary baths.
9. The method of producing solid metal of sub
stantially constant cross section‘throughout its
length directly from a mass of molten metal which
comprises establishing a main bath of molten 30
metal between a pair of adjacent and operatively
associated rolls, providing a dam of molten metal
at each endyof the rolls to laterally restrain said
main bath and to establish a pair of auxiliary
baths contiguous with the ends of the said main 35.
bath, adjusting the position of said molten end
dams so that their bottom‘ is raised above the
point of maximum approach of the rolls, con
tinuously feeding molten metal to said main bath
directly and through said auxiliary baths sub 40
stantially underneath the surface thereof and in '
a substantially horizontal direction, and rotating
said rolls to cause the ejection of solidi?ed metal
from the bight of the rolls, said metal having a‘
width substantially equal to that of said rolls and 45
less than the combined lengths of‘ said main‘and
said auxiliary baths.
’
10. The method of producingv solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal
which comprises establishing a main bath of
molten metal between a pair of adjacent and
cperatively associated rolls, providing a dam con
stituted of molten metal at each end of the rolls
to laterally restrain said main bath and to estab
lish a pair of auxiliary baths contiguous with the
‘ends of said main bath, rotating said rolls to cause
the ejection of solidi?ed metal from the bight of
the rolls, said metal having a width substantially
equal to that of said rolls and less than the com 60
bined lengths of said main and said auxiliary
baths, and controlling the thermal conditions so
that the temperature of the solidi?ed metal at the
bight of the rolls is substantially the same in the
zones adjacent to the dams and the intermediate
zones of the molten bath.
'
‘
- 11. The method of producing solid metal of sub
stantially constant cross section throughout its
length directly from a mass of molten metal which
comprises establishing a main bath of, molten
metal between a pair of adjacent and operatively
associated rolls, providing a dam constituted of
molten metal at each end of the rolls to laterally
restrain said main bath and to establish a pair
75 tablish a pair of auxiliary baths contiguous with - ofauxiliary baths contiguous with the ends of
15.
2,127,515‘
said main bath, rotating said rolls to cause the
ejection of ‘solidi?ed metal from the bight of the
rolls, said‘ metal having a width substantially
equal to that of said rolls and less than the com
‘.iined lengths of said main and- said auxiliary
baths, maintaining said molten metal to a selected
5
metal having a width substantially equal to that
of said rolls and less than the combined lengths
of said main and said auxiliary baths.
16. The method of producing solid metal of
substantially constant cross section throughout its
length directly from a mass of molten metal which
comprises establishing a main bath of molten
metal between a pair of adjacent and operatively
baths, and varying said additions of molten metal
associated rolls, providing a dam constituted of
with changes indicated by a torque indicator op
molten metal at each end of the rolls to laterally 10
10 eratively associated with the said rolls.
restrain said bath and to establish a pair of auxil
12. The method of producing solid metal of iary
baths contiguous with the ends of said main
substantially constant cross section throughout ‘
baths, establishing a closed circuit of molten
its length directly from a mass of molten metal
including said main and‘ auxiliary baths,
which comprises establishing‘a main bath ofv metal
feeding
molten metal to said circuit to'maintain 15
15 molten metal between a pair of adjacent and op
a
selected
height therein, and rotating said rolls
eratively associated rolls, providing a dam con
to cause the ejection of solidi?ed'metal from the
stituted of molten metal at each end of the rolls bight of the rolls, said metal having a width sub
to laterally restrain said main bath and to estab- v
lish a pair of auxiliary baths contiguous with the stantially equal to that of said rolls and less than 20
ends of said main bath, driving said rolls by the combined lengths of said main and said
baths.
_
means of a motor to cause the ejection of solidi-7 auxiliary
17. The method of producing solid metal of
?ed metal from the bight of the rolls, said metal _ substantially constant cross section throughout its
having a width substantially equal to that of said
directly from a mass of molten metal
rolls and less than the combined lengths of said length
which
comprises
establishing a main ,bath of 25
main and said auxiliary baths, and controlling
molten metal‘ between a pair of adjacent and
the solidi?cation bymeans of an indicator opera
operatively associated rolls, providing a dam con
tlvely associated with said motor.
'
of molten metal at each end of the rolls
13. The method of producing solid metal of stituted
laterally restrain said bath and to establish a
substantially constant cross section throughout to
pair of auxiliary baths contiguous with the ends 30
its length directly from a mass of molten metal
which comprises establishing a bath of molten of said main bath, establishing a closed circuit
metal between a pair of adjacent and operatively of molten metal including said main and auxiliary
baths, feeding molten metal’ to said circuit to
associated rolls, providing a dam at each end of maintain it at a constant height, maintaining the
the rolls to laterally restrain said bath, adjusting
molten metal in said circuit at a preferred tem
35 the position'of said dams so that their bottom perature by means of induction heating, and‘
is raised'above the point of maximum approach rotating said rolls to cause the ejection of solidi
of the rolls. continuously feedingv molten metal to
said bath without disturbing the metal already ?ed metal from the bight of the rolls, said metal
frozen in the bight of the rolls, and rotating said having a width substantially equal to that of said
height in said bath, adding molten metal to said
40 rolls to cause the ejection of solidi?ed metal from
the bight of the rolls.
'
14. The method of producing solid metal of
substantially constant cross section throughout
rolls and less than the combined lengths of said 40
main and said auxiliary baths,
l8.~'I'he method of producing solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal
its length directly from a mass of molten metal
which comprises establishing a main bath of
45
molten metal between a pair of adjacent and op
eratively associated rolls, providing a dam con
stituted of molten metal at each end of the rolls
'to laterally restrain said bath and to establish a
pair of auxiliary baths contiguous with the ends
50
molten metal between a pair of adjacent and
operatively associated rolls, providing a dam con
stituted of molten metal at each end of the rolls
to laterally restrain said bath and to establish a,
pair of auxiliary baths contiguous with the ends
of said main bath, feeding molten metal solely
to said auxiliary baths to maintain a selected
height in said main and auxiliary baths, and ro
tating said rolls to cause the ejection of solidi?ed
metal from the bight of the rolls, said metal hav
ing a width substantially equal to that of said
rolls and less than the combined lengths of said
main and said auxiliary baths.
'
15. The method of producing solid metal of
60 substantially constant cross section throughout its
6.5
length directly from a mass of molten metal
which comprises establishing a main bath of
molten metal between a pair of adjacent and
operatively associated rolls, providing a dam con
stituted of molten metal at each end of the rolls
to laterally restrain said bath and to establish
a pair of auxiliary baths contiguous with the ends
of said main bath,'feeding molten metal solely to
said auxiliary baths to maintain a selected height
70 in said main and auxiliary baths, controlling the
_ introduction of molten metal in such a manner
that no molten metal will enter said baths ap
preciably above the operating surface thereof,
and rotating said rolls tov cause the ejection of
75 solidi?ed metal from the bight of the rolls, said
which comprises establishing ' a main bath of 45
of said main bath, establishing a closed circuit‘
so
of molten metal including said main and auxil
iary baths,‘ feeding molten metal to said circuit
to maintain it at a constant height, maintaining -
the molten metal in said circuit at a‘ preferred 55
temperature by means of induction heating, re
stricting the cross section of said circuit at the
points where ‘increased heating effect is desired,
and rotating said rolls to cause the ejection of
60
soidi?ed metal from the bight thereof.
19. A rolling mill for producing solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal
comprising a pair of rolls, means for rotatably
supporting said rolls ‘in an adjacent and opera 65
tively associated relation, means for feeding
molten metal into the bight of said rolls to estab
lish a bath of molten metal therein, an end dam
at each end of said rolls and constituted of a
molten metal to laterally restrain said bath of 70
molten metal, and means for rotating said rolls
.to cause the ejection of solidi?ed metal from the
bight of the rolls.‘
20. A rolling mill forv producing solid metal of
substantially constant cross section throughout 75
l
I 2,127,515
its length dirctly from a‘ mass of molten metal
comprising a pair of rolls rotatably mounted in
an adjacent and cooperating position, means for
feeding molten metal into the bight of said rolls
to establish a main bath of molten metal therein,
for displacing said dam supporting members in
a dam supporting member ateach end of said
rolls, a bath of molten metal supported by each
its length directly from a mass of molten metal
of said members and forming a molten end dam
for said main bath, and means for rotating said
an adjacent and cooperating position, a dam sup
porting member at each end of said rolls, a
the horizontal and in the vertical direction to ad
just said molten end dam.
25. A rolling mill for producing solid metal of
substantially constant cross section throughout
comprising a pair of rolls rotatably mounted in
10 rolls to cause the ejection of solidi?ed metal from
pocket shaped refractory lining in each of said
the bight of the rolls.
21. A rolling mill for producing solid metal of
substantially constant cross section throughout
members,’ means for yieldingly pressing said
its length directly from a mass of molten metal
15 comprising a pair of rolls rotatably mounted in
'an adjacent and cooperating position, a dam
' supporting member having a pocket shaped
cavity at each end of said rolls, means for feed
ing molten metal into the bight of‘, said rolls to
20 establish a main bath of molten metal therein,
means for feeding a molten metal having a char
acter and temperature similar to that of said
main bath into said cavities to form a molten end
dam therein to laterally restrain said main bath
25 of molten metal, and means for rotating said rolls'
to cause the ejection of solidi?ed metal from the
bight of the rolls.
members against the end surface of the rolls,
means for adjusting said members in the vertical
direction, means for feeding a molten metal into
the space de?ned by the bight of said rolls and
said, pocket shaped lining to establish a bath of
molten metal therein, the terminalportions of
said bath extending beyond the ends of said rolls _
forming a molten end dam for laterally restrain
ing the central portion of‘ said bath, and means ~_
for rotating said rollsto cause the ejection of
solidi?ed metal from the bight of the rolls.
v 26. A rolling mill for producing solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal 25
comprises a pair of rolls rotatably mounted in
.7 an adjacent and cooperating position, a dam sup
,
‘ 22. A rolling mill for producing solid,meta'l of
substantially constant cross section throughout
30 its length directly from ,a mass of molten metal
comprising a pair of rolls rotatably mounted in
- an adjacent and cooperating position,va dam sup-'
porting member having a pocket shaped cavity
porting member at each end of said' rolls, a pocket
shaped refractory lining in each of said members,
means for preheating said members and said lin
members against the end surface of the rolls, a
vertically, displaceable slide member for adjust
straining the central portion of said bath, means
for rotating said rollsxto cause the ejection of
solidi?ed metal from the bight of the rolls, and
means for adjusting said dam supporting mem
ing said supporting members in the vertical di
rection, means for feeding a molten metal into
the space de?ned by the bight of said rolls and
said pocket shaped lining'to establish a bath of
molten metal therein, the terminal portions of
said bath extending beyond the end of said rolls
forming a molten end dam for laterally restrain
ing the central portion of said bath, and means
for rotating-said rolls to cause the ejection oflso
lidi?ed metal from the bight of the rolls.
27. A rolling mill for producing solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal
comprising a pair of rolls rotatably mounted in
an adjacent and cooperating position, a dam sup
porting member having a pocket shaped cavity at
each end of said rolls, means for yieldingly press
ing said members against the end surface of the
rolls, means for adjusting said members in the
vertical direction, a distributing box located above
the bight of the rolls, means for feeding molten
metal to said distributing box, means for discharging molten metal from said box into the
space de?ned by the bight of said rolls, and said
cavities to establish a bath of molten metal there
in, the terminal portions of said bath extending
bers for controlling said molten end dam.
beyond the ends of‘said rolls and forming molten
at each end of said rolls,-means for feeding a
35. molten metal into the bight of the rolls and in
between said cavities to establish a bath of molten
metal therein extending beyond the end of said
rolls, the terminal portions of said bath extend
ing beyond the end of said rolls forming molten
40 end dams restrainingthe center portion of said
bath, and means for rotating said rolls to cause
the ejection of solidi?ed metal from the bight
of the rolls.
_
'
23. A rolling mill for producing solid metal of
45 substantially constant cross section throughout
- its length directly from a mass of molten metal
comprising a pair of rolls rotatably mounted in
an adjacent and cooperating position, a dam
supporting member having a pocket shaped cav
50 ity at each end of said rolls, means. for feeding a
molten metal into the space de?ned by the bight
of said rolls and said cavities to establish a bath
of molten metal therein, the terminal portions
‘ of said bath extending beyond the ends of said
55 rolls forming a molten end dam for laterally re-v
.
24. A rolling mill for producing solid metal of
substantially constant cross section throughout
80
ing, an air cylinder for yieldingly pressing said
35
45
50
55
end dams, and means for rotating said rolls to
cause the ejection of solidi?ed metal from the
its length directly from_ a mass of molten metal bight of. the rolls.
comprising a pair ofv rolls rotatably mounted in 28. A rolling mill for producing solid metal of
substantially constant cross section throughout 65
65 an adjacent and cooperating position, a dam sup
porting member having a pocket shaped cavity at its length directly from a mass of molten metal
each end of said rolls, means for feeding a molten - comprising a pair of rolls rotatably mounted in
- metal into' the space de?ned by the bight of the an adjacent and cooperating position, a dam sup
rolls and said cavities to establish a bath of porting member having a pocket shaped cavity
70 molten metal therein, the terminal portions‘ of at each end of said rolls, means for yieldingly 70
said bath extending beyond the end of said rolls pressing said members against the end surfaces
forming molten end dams for laterally restrain
of the rolls, means for adjusting said members
ing the central portion of said bath, means for in the vertical direction, a distributing box lo‘
rotating said rolls to cause the ejection of solidi
cated above the bight of the rolls, means for
?ed metal from the bight of the rolls, and means feeding molten metal to said distributing box,
7
2,127,515
a plurality of nozzles in said distributing box for
discharging metal from said box into the space
de?ned by the bight of said rolls and said cavi
ties to establish a bath of molten metal'therein,
the terminal portions of said bath extending be
yond the ends of said rolls and forming molten
end dams, and means for rotating said rolls to
' cause the ejection of solidi?ed metal from the
bight of the rolls.
10
- 29. A rolling mill for producing solid metal of
substantially constant cross section throughout
its length directly from a mass of molten metal
comprising‘a pair of rolls rotatably mounted in
an adjacent and cooperating position, an end
dam at each endof said rolls, means for yield
ingly-pressing said dams against the end surface
of the rolls, means for adjusting said dams in the
vertical direction, means for feeding a molten
metal into the space de?ned by the bight of said
20 rolls and'said dams to establish a bath of molten
metal therein, and means for rotating said rolls
to cause the ejection ‘of solidi?ed metal from the
bight of the rolls.
'
30. A rolling mill for producing solid metal of
substantially constant cross section throughout
25 its length directly from a mass of molten metal
comprising a pair of rolls rotatably mounted in
said rolls and contiguous with said main bath to
restrain the same, substantially horizontal inlet
channels connecting said auxiliary baths to each
other and forming a closed circuit therewith,
means for supplying molten metal to said main
and auxiliary baths through said inlet channels,
and means for rotating said rolls to cause the
ejection of solidi?ed metal from the bight
thereof.
33. A rolling mill for producing solid metal of 0
substantially constant cross section throughout
its length directly from a mass of molten metal
comprising a pair of rolls, means for rotatably
supporting said rolls in an adjacent and opera
tively associated relation, a main bath of molten
metal located above the bight of said rolls, an
auxiliary bath of molten metal at each end of
said rolls and contiguous with said main bath to
restrain the same, substantially horizontal inlet
channels connecting said auxiliary baths to each
other and forming a closed circuit therewith,
means for supplying molten metal to said circuit,
induction heating means operatively associated
with said circuit, and means for rotatingv said
rolls to cause the ejection of solidi?ed metal from 25
the bight of the rolls.
34. A rolling mill for producing solid metal of
substantially constant cross section throughout
an adjacent and cooperating position, an end
length directly from a mass of molten metal
dam at each end of said rolls, a supporting mem ~its
comprising
a‘pair of rolls, means for rotatably
ber for each of said dams, an air cylinder for supporting said rolls in an adjacent vand opera
30
yieldingly pressing said members and said dams
against the end surface o1r the rolls, a vertically tively associated relation, a main bath of molten
metal located above the bight of said rolls, an
displaceable slide member for adjusting said sup
auxiliary-bath
of molten metal at each end of
porting members in the vertical direction, means
for feeding a molten metal into the space de?ned said rolls and contiguous with said main bath to
restrain the same, relatively narrow pouring
35
'by the bight of said rolls and said damsto estab
lish a bath of molten metal therein, and means
for rotating said rolls to cause the ejection ‘of
solidi?ed metal from the bight of the rolls.
31. A rolling mill for producing solid metal
40 of substantially constant cross section through,
out its length directly from a mass of molten
metal comprising a pair of rolls. means for ro-'
tatably supporting said rolls in an adjacent and
operatively associated relation, a main bath of
molten metal located above the bight of said
rolls, an auxiliary bath of molten metal at each
end of said rolls and contiguous with said main
bath to restrain the same, means for feeding
molten metal to saidauxiliary baths to maintain
50 the metal in said main and auxiliary baths at a
preferred height, and means for rotating said
rolls to cause the ejection of solidi?ed metal from
the bight or the rolls.
channels having one of their ends connected to
said auxiliary baths, a main inlet channel con
nected to the other ends of said pouring channels
and forming a complete circuit including said 40
main and auxiliary baths, means for feeding
molten metal to said circuit, induction heating
means operatively associated with said circuit,
and means for'rotating said rolls to cause the
ejection of solidi?ed metal from the bight of the
rolls.
,
35. A rolling mill for producing solid metal of
substantially constant cross sections throughout
its length directly from a mass of molten metal
comprising a pair of rolls, means ,for rotatably 50
supporting said rolls in an adjacent and opera
tively associated relation, means for feeding
molten metal into the bight of said rolls to es- '
tablish a main bath of molten metal therein,
32. VA rolling mill for producing solid metal of ' an end dam at each end of said rolls constituted 55
55 substantially constant cross section throughout of a molten metal and having substantially the
its length directly from a mass of molten metal same height as the molten metal in said main
comprising a pair of rolls, means for rotatably bath, and means for rotating said rolls to cause
supporting said rolls in an adjacent and opera
tively associated relation, a main bath of molten
60 metal located above the bight of said rolls, an
auxiliary bath of molten metal at each end of
the ejection of solidi?ed metal from the bight of
the rolls.
'
CLARENCE W. HAZELE'I'I'.
Документ
Категория
Без категории
Просмотров
0
Размер файла
1 497 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа