close

Вход

Забыли?

вход по аккаунту

?

Патент USA US2105750

код для вставки
J. 18, 1938.
E. N. MILLAN
2,105,750
ANNEALING COVER
Filed Oct. 9, 1935
2 Sheets-Sheet 1
h‘ 1’.
F161.
_
INVENTOR
EDWARDNMLLAM
ATTORNEYS.
18, 19380
E. N. MILLAN
2,105,750
ANNEALING COVER
Filed Oct. 9, 1935
2 Sheets-Sheet 2
INVENTOR .
law/220' NM; 4 .4”.
I ATTORNEY-S.
Patented Jan. 18, 1938
2,105,750
UNITED STATES PATENT OFFICE
2,105,750
ANNEALING COVER
Edward N. Millan, Middletown, Ohio, assignor
to The American Rolling Mill Company, Mid
dletown, Ohio, a: corporation of Ohio
Application October ‘9, 1935, Serial No. 44,190
14 Claims. (CL 263-49)
My invention relates to annealing covers for idity to withstand the strains to which it will be
covering packs of sheet metal or coils while they subjected.
I
‘
are being heat treated. It is unnecessary to
A
further
object
of
my
invention
is to provide
describe the use of annealing covers, as they are
well known in the art. However in the use of
annealing covers they are subjected to certain
strains, for in many cases the gases surrounding
the pack being treated are under pressure. For
this reason the annealing covers must be of
10 rugged construction, and yet should‘ be as light
as is consonant with adequate rigidity. In ac
cordance with the above requirements I have
made such annealing covers of corrugated roll
plate or sheet metal, and these covers are dis
15 closed and claimed in my copending applica
tions Serial No. 3,083, filed January 23, 1935, and
Serial No. 37,858, ?led August 26, 1935.
In many of the present types of box annealing
covers of the all cast steel type, failures have
20 resulted due to the high thrust loads from the
heavy cast steel arch top. This load often causes
the sides to bulge until a total failure of the
structure results. My invention relates to a con
struction whereby the roof arch is made of rela
25 tively light weight roll plate which may be cor
rugated for additional stiffness; this results in
reduced side thrust loads.
.
My invention also contemplates a construc
tion comprising cast steel side walls and light
30 plate end walls and a roof arch of light plate,
which may be either ?at or corrugated.
By my novel construction I not only achieve
the advantages due to a reduction of side thrust
loads as above described, but I retain‘generally
35 the advantages of the cast steel cover in resist
ing deformation due to heat. Since the side
walls of annealing covers in annealing furnaces
are subject to much lighter heat than the rest
of the cover, I retain the strength of the cast
40 steel in that part of the cover where it is of
greatest importance.
It is an object of my invention therefore, to
provide a rugged and sturdy box annealing cover
for use in box annealing furnaces, which will not
45 be subject to large side thrust loads from the
roof arch.
It is another object of my invention to provide
an annealing cover of the above mentioned type
which will be relatively simple of construction,
and not more expensive than other annealing
covers which do not have the above advantages.
It is a further object of my invention to pro
vide a top or roof arch for an annealing cover
which shall be relatively light in weight, and
55 which shall at the same time be of suf?cient rig~
additional means for strengthening an anneal
ing'cover whereby bulging of the sides is pre— 5
vented.
Generally it is the object of my invention to
provide an annealing cover which will retain its
original shape and form throughout its life in _
spite of the stresses to which it is continually 10
being subjected.
These and other objects of my invention which
will be set forth hereinafter, or will be apparent
to one skilled in the art upon reading these
speci?cations, I accomplish by that certain con
struction and arrangement of parts of which I 15
shall not describe a preferred embodiment. Ref
erence is now made to the drawings which form
a part hereof, and in which:
Figure 1 is an end elevation, partly in section, 20
of my novel annealing cover.
Figure 2 is a side elevation, partly in section,
of the same.
Figure 3 is a fragmentary detail view of the
construction at the joint between the roof and 25
the side of the annealing cover.
Figure 4 is a section of the side wall taken on
the line I-—l of Figure 2.
Figure 5 is a section of said wall taken on the
line 2-,2 of Figure 2.
30
Broadly my invention comprises providing an
annealing cover formed of a relatively heavy
material such as cast steel, and having a roof
arch of relatively light material such as roll plate.
The upper portions of the side walls are con- 35
nected together internally by means of tie rods
of some heat resisting metal, which is capable of
carrying relatively much higher loads per unit
area than‘ the metal of which the annealing cover
itself is made.
40
Brie?y in the practice of my invention, I pro
vide an annealing cover of cast steel or similar ,
material, of generally pylon form. The cover
has side walls l0 provided with corrugations l0’,
and end walls It provided with corrugations H’.
These corrugations are for the purpose of addi~ 46
tionally strengthening the side and end, walls.
I also prefer to make the walls of tapering con
struction, so that they are thicker near the .bot
tom than the top. Sections of a side wall taken
near the top and bottom respectively, are clearly
shown in Figures 4 and 5. It will be noted from
these ?gures that I prefer to make the corruga
tions of constant depth, as indicated at A, while
the thickness of the metal varies as indicated
2
2,105,760 I
walls, said member being of substantially hollow
at B. All that has been said of the side walls I0
and their corrugations l0’ applies equally to the
pylon shape, and a roof arch member of relative
end walls I I and their corrugations II’. The end
walls di?er from the side ‘walls, however, in that
their top edges are arcuate to conform to the
curvature of the top arch, and they may differ
further in that they may be made of roll plate,
and corrugated for greater strength, as shown}
in my copending application mentioned above,
10 since they are not subjected to as great stresses
as the side walls.
'
ly light weight roll plate welded thereto.
6. In an annealing cover comprising a cast steel
base member providing side and end walls, and
a roof arch of relatively light material welded
thereto, a tie rod of heat resistant metal having
a relatively high tensile strength welded to the _
opposed side walls for the purpose described.
7.11m an annealing cover according to claim 4,
a tie rod of heat resistant metal having a rela
The top I2 is formed from relatively light tively high tensile strength welded to the opposed
weight roll plate, and is corrugated transversely ' side walls for the purpose described.‘
8. In an annealing cover according to claim 5,
for added strength and rigidity. This top l2 ?ts
_a tie rod of.heat resistant metal having a rela
15 over the annealing cover between the upper
curved portions of the end walls H, and the
tively high tensile strength welded to the opposed
‘longitudinal edges of the top I! rest upon por- , side walls for the purpose described.
tions In" formed along the top edges of the side
walls ill. The portions I0” present faces dis
20 posed at an angle equivalent to the angle formed
9. A composite box annealing cover comprising
a cast steel base member providing side and end
walls, said walls being corrugated, and a roof 20
by the radii of curvature of the top H2 at the '
arch of relatively light‘material welded thereto.‘
top member i2 is, of course, welded to the por
walls, said side and end walls being thicker at
their bases than at their tops said walls being
corrugated, and a roof arch member of relatively
10. A composite box annealing cover compris
edges thereof. This construction facilitates
welding of the‘ top and side wall members. The ing a unitary member providing side and end
25 tions it)" and to the upper curved portions of
the end walls H.
'
_
-
For additional strength against lateral bulging . lightweight roll plate welded thereto.
11. A composite box annealing cover compris
of the side walls In, I provide along the top edges
thereof a series of holes 13, which may be drilled
30 or otherwise formed therein.
The holes l3 on
the opposite side walls are disposed in alignment,
and tie rods [4 are inserted therein, stretching
across the interior of the annealing cover. The
rods I4 are then welded in position as indicated
35 at 141;. This construction is clearly shown in
Figure 3, where the manner of welding the top
I2 to the portions I0" is also indicated at Her.
The rods I4 are made from some heat resisting
metal of considerable tensile strength.
"
The different con?gurations and shapes of the
members shown in the drawings, and described in
the speci?cations are not intended as limitations
except insofar as they are speci?cally mentioned
and claimed in the claims which follow.
.
Having now fully described my invention, what
45
I claim as new and desire ‘to secure by Letters
Patent, is:—-
'
1. A composite box annealing cover comprising
- a cast steel base member providing side and end
50 walls, and a roof arch of relatively light material
welded thereto.
2. A composite box annealing cover compris
ing a cast steel base member providing side and
end walls, and a roof'arch member of relatively
55 light roll plate welded thereto.
’
3. A composite box annealing cover comprising
a cast steel base member providing side and end
walls, and a roof arch member of relatively light
weight corrugated roll plate welded thereto.
60
4. A composite box annealing cover compris
ing a unitary member providing side and end
walls, said side and end walls being thicker at
' their bases than at their tops, and a roof arch
member of relatively light weight roll plate weld
65 -
ing a cast steel base member providing side and
end walls, said side walls at their top edges be
ing provided with upwardly and outwardly ex
tending lips, and a roof arch member of relatively
light weight corrugated roll plate welded to said
lips, said lips being disposed at an angle equiva
lent to that of the radii of curvature of the roof
arch at its lateral edges.
'
12. A composite box annealing cover compris
ing a cast steel base member providing side and
end walls, said side walls at their top edges be
ing provided with upwardly and outwardly ex~ 40
tending lips, and a roof arch member of rela
tively light weight corrugated roll plate welded
to said lips, said lips being disposedlat an angle
equivalent to that of the radii of curvature of
the roof arch at its lateral edges, the top edges 45
of said end walls being curved to the curvature
of said roof arch and welded thereto.
13. A composite box annealing cover compris
ing a cast steel base member substantially of
hollow pylon shape providing side and end walls,
said walls being thicker at their bases than at
their tops and provided with corrugations, the ,
top edges of said side walls provided with lips
and the top edges of said end Walls being arched,
and a roof arch member of relatively light weight
corrugated roll plate, the curvature of said roof
arch member corresponding to that of the top
edges of said end walls, and said lips being dis
posed at an angle corresponding to that of the
80
radii of curvature of the roof arch at its lateral
edges, said roof arch being welded to said lips
and the top edges of said end walls.
I
14. In an annealing cover according to claim
13, a tie rod of heat resisting metal having a
relatively high tensile strength welded to the op
5. A composite box annealing cover comprising -' posed side walls for the purpose described.
EDWARD N. MILLAN.
a cast steel base member providing side and end
ed thereto.
1
65
Документ
Категория
Без категории
Просмотров
0
Размер файла
371 Кб
Теги
1/--страниц
Пожаловаться на содержимое документа