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Патент USA US3038258

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June 12, 1962
H. KREMER
3,038,248
STRENGTHENING OF METAL
Filed Nov. 3, 1955
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2 Sheets-Sheet 1
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ALTERNATIVE\
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‘FURNACE!
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cLAss FIBRE
GLASS FIBRE
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MOLTEN METAL
BATH
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GLASS FIBRE ,
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MO'LTEN METAL
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BATH
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sILvER
METAL COATED
GLASS FIBRE
METAL COATED
GLASS FIBRE
SILVER
SPOOL -
SPOOL
LAYERED I WOVE-N \cLAss
MATERIALS
I
FABRIC
|<—
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MOLTEN
MATT
WOVEN ORGLASS MATT ‘M
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REINFORCED FABRIC
METAL SHEETS
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FORGING OR
CASTING
INVENTOR
H EIIRY H ‘REMER
33y
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m, M, M I» ma
ATTORN EYS
June‘ 12, 1962
3,038,248
H- KREMER
STRENGTHENING OF METAL
Filed NOV. 3, 1955
2 Sheets-Sheet 2
F292
)FURNACE I
F490?
GLASS MATT
GLASS FIBRE
_HEAT
SPOOL
'
FABRIC OR LAYER
FROM I 0R 2
If ‘
‘
T
COLD METAL
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T
T T
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L
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GLASS MATT FABRIC
OR LAYER
T
T
T
TT
HEAT
5W
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a!
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METAL
GLASS SPOOL
FROMTORE
PREFORM'
I
MOULD '
OR
CASTING
PREFORMT MOLTEN
~ METAL
MOULD
mvemon
HENRY RREMER
ATFI'OPNEYS
United States Patent
' ice
8,838,248
Pate-rated June 12, 1962
1
2
3,038,248
Henry Kremer, 35 Storrnont Road, Highgate,
London, England
corporated therein ‘by the subsequent application of heat
or of heat and pressure.
FIGURE 4 illustrates a method in which a premetal- .
STRENGTHENING 0F METAL
.
Filed Nov. 3, 1955, Ser. No. 544,792
Claims priority, application Great Britain Nov. 4, 1954 ‘
3 Claims. (Cl. 29—419)
lised or non-metallised glass ?bre matt, fabric or layered
material is preformed to a desired shape, the preform
then being located within a mould and enclosed or en
closed and impregnated with molten metal.
In the methods illustrated in FIGURES 1 to 4, asbestos
This invention relates to the strengthening of metals
may be used instead of glass ?bres. If desired,
and metallic objects to give greater resistance to fatigue, 10 ?bres
‘both asbestos and glass ?bres may be used.
rupture, breakage or elongation.
I claim:
It is known that most metals deteriorate due to over
1. In a method of reinforcing metal articles of prede
stress, ageing and fatigue nad it is an object of this in
termined size and form, such as sheets, castings, forgings
vention to reduce these defects.
and the like, the improvement which comprises coating
I have found that the above-mentioned object may be 15 mineral ?bers selected from the group consisting of glass
achieved by the incorporation of mineral ?bres (and
?bers and asbestos ?bers with a metal in molten condi
particularly glass and asbestos ?bres) in the metal.
tion which metal is capable of wetting the surface of the
Thus according to this invention, a metal body is char
said
?bers, assembling the ?bers into coherent form, in
acterised in that mineral ?bres are incorporated in the
corporating the coherent assembly of ?bers into a body
metal. It will ‘be understood that the term “metal” in 20 having the predetermined size and shape of the article
cludes metal alloys.
while the metal thereof is in molten condition and allow
Preferably the melting point of the mineral ?bres
ing
said body of metal to solidify while retaining substan
should be higher than the melting point of the metal.
tially the size and form of the said article.
This should particularly be borne in'mind when the
2. In a method of reinforcing metal articles of prede
mineral ?bres are glass ?bres, which soften and ?ow at 25 termined
size and form such as sheets, castings, forgings
comparatively low temperatures compared with asbestos.
and
the
like
the improvement which comprises incorpo
It is advantageous that the glass and metal should have
rating into a body having the predetermined size and
speci?c gravities in close relation to each other.
shape of the article, a coherent assembly of mineral ?bers
The invention also provides a process for making a
selected
the group consisting of glass ?bers and
metal body in which mineral ?bres are incorporated in 30 asbestos from
?bers,
by placing the ?bers Within a mold in
the metal when the metal is molten.
which the body is to be formed, ?lling the mold with
The mineral ?bres are preferably in coherent form,
molten metal and allowing said body of metal to solidify
e.g. in the form of a matt, woven fabric or rovings.
while
retaining the size and form of the said article said
The following is a description, by Way of example, of
?bers ‘being coated with a metal in molten condition
different methods of carrying out the invention, reference 35 which metal is capable of Wetting the surface of said
be?ngh
made to the accompanying schematic drawings in
?bers, prior to their incorporation into the molten metal
W 10 :
of said body.
' FIGURES 1A and 1B illustrates two methods of mak
3. In a method of reinforcing metal articles of prede
mg strengthened metal sheets, castings and forgings,
termined size and form such as sheets, castings, forgings
40
FIGURE 2 illustrates an alternative method of making
and the like the improvement which comprises incorpo
a strengthened metal casting,
7
rating into a body having the predetermined size and
FIGURE 3 illustrates an alternative method of making
shape of the article, a coherent assembly of mineral
a strengthened metal sheet, and
?bers selected from the group consisting of glass ?bers
FIGURE 4 illustrates a further method of making a
strengthened metal casting.
45 and asbestos ?bers, by placing the ?bers between metal
sheets and forcing the sheets around the ?bers by appli
Referring to FIGURES 1A and 1B, molten glass from
cation of heat and pressure to incorporate said ?bers
a furnace is formed into ?bres which are passed through
into said body while the metal thereof is in molten con~
a bath of the molten metal, thereby coating the surfaces
dition and allowing said body of metal to solidify while
of the ?bres with metal, the coated ?bres passing onto a
retaining the size and form of said article, said ?bers
spool. In the method of FIGURE 1A, the glass ?bres 50 being coated with a metal in molten condition which
before passage through the molten metal are formed into
metal is capable of wetting the surface of said ?bers,
a sliver, this step being omitted in the alternative method
prior to their incorporation into the molten metal of said
of FIGURE 1B.
‘body.
In each case, the coated ?bres from the spool are proc
essed into a matt, woven fabric, or layered material and 55
References Cited in the ?le of this patent
incorporated in molten metal to form sheets, or in the
case of matt to form castings or forgings.
In the method of FIGURE 2, glass ?bre is led from the
furnace onto a spool and ?bre from the spool is processed
into a matt, Woven fabric or layered material.
UNITED STATES PATENTS
'
It may 60
suitably be processed into short lengths of specially
Woven glass ?bre roving or open Weave cloth. The glass
?bre is then introduced into a mould and molten metal is
poured in to form a casting. If desired the ?bre may be
introduced directly into the molten metal prior to pour 65
mg.
In the method of FIGURE 3, a pre-metallised or non
metallised glass ?bre matty fabric or layered material is
sandwiched between cold metal sheets and intimately in
1,280,908 '
Speed _________________ __ Oct. 8, 1918
1,292,659
Wales ______________ __ Jan. 28, 1919
2,119,668
2,120,496
2,563,394
2,582,685
2,583,855
2,616,165
2,620,851
Dupre ___________ ________ June 7,
Hauger ______________ __ June 14,
Cadgerie _____________ __ Aug. 7,
Eisler ________________ __ Jan. 15,
Kenis ________________ __ Jan. 29,
Brennan ______________ __ Nov. 4,
Brown _______________ __ Dec. 9,
2,772,518
2,814,162
Whitehurst ____________ __ Dec. 4, 1956
Touhnin _____________ _._ Nov. 26, 1957 .
1938
1938
1951
1952
1952
1952
1952
2,848,390
Whitehurst __________ __ Aug. 19, 1958
2,940,886 '
Nachtman ____ _; _____ __ June 14, 1960
,
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