CA1240904A - Fiber-reinforced composite material and method of producing the same - Google Patents
Fiber-reinforced composite material and method of producing the sameInfo
- Publication number
- CA1240904A CA1240904A CA000460907A CA460907A CA1240904A CA 1240904 A CA1240904 A CA 1240904A CA 000460907 A CA000460907 A CA 000460907A CA 460907 A CA460907 A CA 460907A CA 1240904 A CA1240904 A CA 1240904A
- Authority
- CA
- Canada
- Prior art keywords
- fiber
- shaped article
- pressure
- composite material
- primary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D25/00—Special casting characterised by the nature of the product
- B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D6/00—Heat treatment of ferrous alloys
- C21D6/02—Hardening by precipitation
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C47/00—Making alloys containing metallic or non-metallic fibres or filaments
- C22C47/08—Making alloys containing metallic or non-metallic fibres or filaments by contacting the fibres or filaments with molten metal, e.g. by infiltrating the fibres or filaments placed in a mould
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
- C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
- C22C49/04—Light metals
- C22C49/06—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
- B22F2998/10—Processes characterised by the sequence of their steps
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A fiber-reinforced composite body comprising a shaped article of fibers of precipitation hardened stainless steel which has been subjected to a precipitation hardening treatment after solution heat treatment, and an aluminum alloy matrix filled into and integrated with the fiber shaped article by high pressure solidification casting and subjected to artificial aging treatment after solution heat treatment.
A fiber-reinforced composite body comprising a shaped article of fibers of precipitation hardened stainless steel which has been subjected to a precipitation hardening treatment after solution heat treatment, and an aluminum alloy matrix filled into and integrated with the fiber shaped article by high pressure solidification casting and subjected to artificial aging treatment after solution heat treatment.
Description
lZ~ 3~9' This invention relates to a method of producing a fiber-reinforced composite material.
Applicant has prevlously proposed a composite material produced by the steps of partially diffusing and bonding inor-ganic fibers, such as s-tainless steel ~ibers, with one another by the use of a c~pper type soldering material or by baking to form a fiber shaped article, filling a light alloy, as a matrix, in the fiber shaped article by high pressure solidification casting so as to cast the composite material and at the same time, to reinforce a predetermined portion of the composite material by the fibers. The high pressure solidification casting method can be said to be an effective means for producing fiber-reinforced composite materials of this kind because it can sufficiently fill the fiber-shaped article with the matrix to form the composite.
It has now been found that since the fiber is heated to high temperature during brazing and sintering, the fiber itself it annealed and its strength tends to decrease, adversely affect-ing the strength o~ the composite material to be obtained.
According to the present invention there is provided amethod of producing a fiber-reinforced composi-te ma-terial, wherein a longitudinal fiber-shaped article is arranged in a cav-ity of a casting mold, and molten me-tal is filled into said cav-.~ty under a high (primary) hydrostatic pressure, in which the longitwdinal fiber~shaped article is compressed in the proximity of at least one of its end portions additionally under a sec-ondary pressure ranging from 1,000 to 2,500 kg/cm2 after the molten metal has partly solidified under the primary pressure which is lower than the secondary pressure. Suitably the primary pressure ranges from 360 to 600 kg~cm2. Desirably the additional secondary pressure is exerted 1 to 10 seconds after the primary pressure. More desirably with simultaneously adding the sec-ondary pressure the primary pressure is increas~d to 1,000 to1,200 kg/cm2.
-- 1 -- .1, ~
lZ~
In one embodiment of the present invention the casting mold is heated to between 250 and 350C before casting is effected. Suitably the fiber-shaped article is heated to between 460 to 700C before casting is effected. Desirably the fiber-shaped article consists of metal fibers. Preferably said moltenmetal which is filled into the cavity is an aluminum alloy.
In a particular embodiment of the present invention the~
method is used for the manufacture of a connecting rod for an internal-combustion engine, whose rod-forming portion is rein-forced by said fiber-shaped article.
The present invention thus provides a fiber-reinforced composite material having improved strength, by the use of pre-cipitation hardening type stainless steel fibers as the reinforc-ing fibers and applying specific heat treatment to the fibers and to the composite material itself. The composite material of the present invention comprises a precipitation hardenable type stainless steel fiber-shaped article which is sub;ected to a pre-cipitation hardening treatment after solution heat treatment, andan aluminum alloy matrix which fills the fiber-shaped article by high pressure solidification casting to form the composite mate-rial which is subjected to artificial aging trea-tment after solu-tion heat treatment~
Hereinafter, one embodiment of the present invention for a connecting rod for an internal combustion engine will be described by way of the accompanying drawings, in which:-~z~
Figure 1 is a front view in longitudinal section of a connecting rod according to the invention;
Figure 2 is a sectional view taken along line II-II
in Figure l; and Figure 3 is a graphical illustration showing the change of the proportional limit of elasticity for different materials under specified conditions.
Figures 1 and 2 illustrate a connecting rod adapted for use in an internal combustion engine using an aluminum alloy as a matrix. The connecting rod comprises a rod por-tion 1. A ring-like small end portion 2 and a semicircular large end portion 3 axe integrally formed at opposite ends of the rod portion 1. The rod portion 1 is reinforced by a shaped body F of precipitation hardened stainless steel fibers disposed in the axial direction of the rod portion.
The connecting rod is produced by the following method.
First, precipitation hardenable type stainless steel fibers of JIS SUS 631Jl having an 80 ~ diameter (here-inafter called "PH steel fibers") are inserted together with a copper soldering material into a heat-resistant glass tube and are held at 1,120C for 15 minutes to use the soldering material and to locally diffuse and bond the fibers with one another, thereby obtaining a fiber shaped article F. The resulting fiber shaped article F is cooled at a cooling speed of 10C/sec.
The temperature of 1,120C described above is the melting point of the copper soldering material and is the solution point of the PH steel fibers. Accordingly, when cooled from this temperature at the ra~e described above, the fiber shaped article F is subjected to solution heat treatment and is haxdened. The fiber shaped article F has a bulk density of
Applicant has prevlously proposed a composite material produced by the steps of partially diffusing and bonding inor-ganic fibers, such as s-tainless steel ~ibers, with one another by the use of a c~pper type soldering material or by baking to form a fiber shaped article, filling a light alloy, as a matrix, in the fiber shaped article by high pressure solidification casting so as to cast the composite material and at the same time, to reinforce a predetermined portion of the composite material by the fibers. The high pressure solidification casting method can be said to be an effective means for producing fiber-reinforced composite materials of this kind because it can sufficiently fill the fiber-shaped article with the matrix to form the composite.
It has now been found that since the fiber is heated to high temperature during brazing and sintering, the fiber itself it annealed and its strength tends to decrease, adversely affect-ing the strength o~ the composite material to be obtained.
According to the present invention there is provided amethod of producing a fiber-reinforced composi-te ma-terial, wherein a longitudinal fiber-shaped article is arranged in a cav-ity of a casting mold, and molten me-tal is filled into said cav-.~ty under a high (primary) hydrostatic pressure, in which the longitwdinal fiber~shaped article is compressed in the proximity of at least one of its end portions additionally under a sec-ondary pressure ranging from 1,000 to 2,500 kg/cm2 after the molten metal has partly solidified under the primary pressure which is lower than the secondary pressure. Suitably the primary pressure ranges from 360 to 600 kg~cm2. Desirably the additional secondary pressure is exerted 1 to 10 seconds after the primary pressure. More desirably with simultaneously adding the sec-ondary pressure the primary pressure is increas~d to 1,000 to1,200 kg/cm2.
-- 1 -- .1, ~
lZ~
In one embodiment of the present invention the casting mold is heated to between 250 and 350C before casting is effected. Suitably the fiber-shaped article is heated to between 460 to 700C before casting is effected. Desirably the fiber-shaped article consists of metal fibers. Preferably said moltenmetal which is filled into the cavity is an aluminum alloy.
In a particular embodiment of the present invention the~
method is used for the manufacture of a connecting rod for an internal-combustion engine, whose rod-forming portion is rein-forced by said fiber-shaped article.
The present invention thus provides a fiber-reinforced composite material having improved strength, by the use of pre-cipitation hardening type stainless steel fibers as the reinforc-ing fibers and applying specific heat treatment to the fibers and to the composite material itself. The composite material of the present invention comprises a precipitation hardenable type stainless steel fiber-shaped article which is sub;ected to a pre-cipitation hardening treatment after solution heat treatment, andan aluminum alloy matrix which fills the fiber-shaped article by high pressure solidification casting to form the composite mate-rial which is subjected to artificial aging trea-tment after solu-tion heat treatment~
Hereinafter, one embodiment of the present invention for a connecting rod for an internal combustion engine will be described by way of the accompanying drawings, in which:-~z~
Figure 1 is a front view in longitudinal section of a connecting rod according to the invention;
Figure 2 is a sectional view taken along line II-II
in Figure l; and Figure 3 is a graphical illustration showing the change of the proportional limit of elasticity for different materials under specified conditions.
Figures 1 and 2 illustrate a connecting rod adapted for use in an internal combustion engine using an aluminum alloy as a matrix. The connecting rod comprises a rod por-tion 1. A ring-like small end portion 2 and a semicircular large end portion 3 axe integrally formed at opposite ends of the rod portion 1. The rod portion 1 is reinforced by a shaped body F of precipitation hardened stainless steel fibers disposed in the axial direction of the rod portion.
The connecting rod is produced by the following method.
First, precipitation hardenable type stainless steel fibers of JIS SUS 631Jl having an 80 ~ diameter (here-inafter called "PH steel fibers") are inserted together with a copper soldering material into a heat-resistant glass tube and are held at 1,120C for 15 minutes to use the soldering material and to locally diffuse and bond the fibers with one another, thereby obtaining a fiber shaped article F. The resulting fiber shaped article F is cooled at a cooling speed of 10C/sec.
The temperature of 1,120C described above is the melting point of the copper soldering material and is the solution point of the PH steel fibers. Accordingly, when cooled from this temperature at the ra~e described above, the fiber shaped article F is subjected to solution heat treatment and is haxdened. The fiber shaped article F has a bulk density of
2.65 g/cc and has good shape retainability.
Next, the fiber shaped article F is placed into the cavity of a die for molding the rod portion in its axial direc-tion and the connecting rod is cast using an aluminum alloy (JIS
AC8B) as the matrix. At the same time, the matrix M fills the fiber shaped article F at the rod portion 1 of the connecting rod to become united therewith and form an integrated, composite member. The connecting rod is allo~ed to cool.
After heating at 500C for 5 hours, the connecting rod is cooled in such a manner that the rod is immersed in hot water s~ored in a tank at-a temperature ~f at least 60C. By this heat treatment,-the aluminum alloy as the matrix M is subjected to solution heat treatment w~hile the PH steel fibers forming the fiber shaped article F are subjected to the precipitation harden-ing treatment.
The temperature for the solution heat treatment and the precipitation hardening treatment i5 suitably from 45~C to 510C. If the temperature is below 450C, the precipitation hardening treatment of the P~ steel Iibers is not achieved and if it is above 510C, the aluminum alloy and the P~ steel fibers are likely to react with each other.
After the treatments described above, the connecting rod is -~
heated at 170C for 10 hours and is then cooled in air at ambient temperature to provide an artificial aging -treatment to the aluminum alloy and to improve its strength.
Figure 3 illustrates the proportional limit of elasticity of the PH steel fiber (I) and stainless steel fiber (II) expressed by JIS SUS 27. Symbol A represents the elastic limit before the heat treatment of each fiber, B the limit after the solution heat treatment and C the limit after the pr~cipi-tation hardening treatment. As can be seen from Fig. 3, the strength of the PH steel fiber (I) can be drastically improved by the heat treatment in comparison with that of the stainless steel fiber (II). The pxoportional limit of elasticity of the rod portion 1 of the connecting rod using the PH steel fiber becomes 7,500 kg/mm2 due to the improvement in strength of this PH steel fiber and to the improvement in strength by the solution heat treatment and artificial aging treatment of the aluminum alloy, and this value is found to be a d~astic im~rove-ment when compared with the value 5,500 kg/m~2 of the rod portion using the stainless steel fiber (II).
As described above, the present invention can provide a fiber-reinforce~ composite material which is light in weight and has improved strength and can be suitably used for automobile components, such as a connecting rod for an internal combus~ion engine. The present invention also has the advantage in the production process that the precipitation hardening treatment of the fiber shaped article and the solution heat treatment of .~.
the matrix can be carried out by a single process step due to the combination of the precipitation hardening type stainless steel fiber shaped article ~ith the aluminum alloy matrix.
Next, the fiber shaped article F is placed into the cavity of a die for molding the rod portion in its axial direc-tion and the connecting rod is cast using an aluminum alloy (JIS
AC8B) as the matrix. At the same time, the matrix M fills the fiber shaped article F at the rod portion 1 of the connecting rod to become united therewith and form an integrated, composite member. The connecting rod is allo~ed to cool.
After heating at 500C for 5 hours, the connecting rod is cooled in such a manner that the rod is immersed in hot water s~ored in a tank at-a temperature ~f at least 60C. By this heat treatment,-the aluminum alloy as the matrix M is subjected to solution heat treatment w~hile the PH steel fibers forming the fiber shaped article F are subjected to the precipitation harden-ing treatment.
The temperature for the solution heat treatment and the precipitation hardening treatment i5 suitably from 45~C to 510C. If the temperature is below 450C, the precipitation hardening treatment of the P~ steel Iibers is not achieved and if it is above 510C, the aluminum alloy and the P~ steel fibers are likely to react with each other.
After the treatments described above, the connecting rod is -~
heated at 170C for 10 hours and is then cooled in air at ambient temperature to provide an artificial aging -treatment to the aluminum alloy and to improve its strength.
Figure 3 illustrates the proportional limit of elasticity of the PH steel fiber (I) and stainless steel fiber (II) expressed by JIS SUS 27. Symbol A represents the elastic limit before the heat treatment of each fiber, B the limit after the solution heat treatment and C the limit after the pr~cipi-tation hardening treatment. As can be seen from Fig. 3, the strength of the PH steel fiber (I) can be drastically improved by the heat treatment in comparison with that of the stainless steel fiber (II). The pxoportional limit of elasticity of the rod portion 1 of the connecting rod using the PH steel fiber becomes 7,500 kg/mm2 due to the improvement in strength of this PH steel fiber and to the improvement in strength by the solution heat treatment and artificial aging treatment of the aluminum alloy, and this value is found to be a d~astic im~rove-ment when compared with the value 5,500 kg/m~2 of the rod portion using the stainless steel fiber (II).
As described above, the present invention can provide a fiber-reinforce~ composite material which is light in weight and has improved strength and can be suitably used for automobile components, such as a connecting rod for an internal combus~ion engine. The present invention also has the advantage in the production process that the precipitation hardening treatment of the fiber shaped article and the solution heat treatment of .~.
the matrix can be carried out by a single process step due to the combination of the precipitation hardening type stainless steel fiber shaped article ~ith the aluminum alloy matrix.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A method of producing a fiber-reinforced composite material, wherein a longitudinal fiber-shaped article is arranged in a cavity of a casting mold, and molten metal is filled into said cavity under a high (primary) hydrostatic pressure, in which the longitudinal fiber-shaped article is compressed in the prox-imity of at least one of its end portions additionally under a secondary pressure ranging from 1,000 and 2,500 kg/cm2 after the molten metal has partly solidified under the primary pressure which is lower than the secondary pressure.
2. A method according to claim 1, in which the primary pressure ranges from 360 to 600 kg/cm2.
3. A method according to claim 2, in which the addi-tional secondary pressure is exerted 1 to 10 seconds after the primary pressure.
4. A method according to claim 1, 2 or 3, in which simultaneously with adding the secondary pressure the primary pressure is increased to 1,000 to 1,200 kg/cm2.
5. A method according to claim 1, 2 or 3, in which the casting mold is heated to between 250 and 350°C before casting is effected.
6. A method according to claim 1, 2 or 3, in which the fiber-shaped article is heated to between 460 to 700°C before casting is effected.
7. A method according to claim 1, 2 or 3, in which the fiber-shaped article consists of metal fibers.
8. A method according to claim 1, 2 or 3, in which said molten metal which is filled into the cavity is an aluminum alloy.
9. A method according to claim 1, 2 or 3, for the man-ufacture of a connecting rod for an internal-combustion engine, whose rod-forming portion is reinforced by said fiber-shaped article.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58222947A JPS60114540A (en) | 1983-11-26 | 1983-11-26 | Fiber-reinforced composite member and its production |
| JP222947/83 | 1983-11-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1240904A true CA1240904A (en) | 1988-08-23 |
Family
ID=16790364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000460907A Expired CA1240904A (en) | 1983-11-26 | 1984-08-13 | Fiber-reinforced composite material and method of producing the same |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JPS60114540A (en) |
| CA (1) | CA1240904A (en) |
| DE (1) | DE3431778A1 (en) |
| FR (1) | FR2555503B1 (en) |
| GB (1) | GB2151514B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63290229A (en) * | 1987-05-21 | 1988-11-28 | Itaru Niimi | Manufacture of fiber-reinforced composite metallic material |
| DE3912664A1 (en) * | 1988-09-02 | 1990-03-08 | Bayerische Motoren Werke Ag | Light metal casting esp. engine housing |
| DE10157478A1 (en) * | 2001-11-23 | 2003-06-05 | Fne Gmbh | Compound metal material is a shaped first metal, e.g. a wire coil, embedded in a ground matrix of the second metal. |
| JP2005042136A (en) * | 2003-07-23 | 2005-02-17 | Toyota Industries Corp | Aluminum-matrix composite material and its manufacturing method |
| FR2940378B1 (en) * | 2008-12-24 | 2011-03-04 | Messier Dowty Sa | PROCESS FOR MANUFACTURING A METAL ROD REINFORCED WITH LONG FIBERS |
| CN111893275B (en) * | 2020-08-17 | 2021-06-29 | 燕山大学 | Low-temperature heat treatment strengthening method for 316 or 316L stainless steel fibers |
| CN111763815B (en) * | 2020-08-17 | 2021-07-23 | 燕山大学 | Low-temperature heat treatment strengthening method for 304 or 304L stainless steel fibers |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5292827A (en) * | 1976-01-16 | 1977-08-04 | Honda Motor Co Ltd | Method of manufacturing structures with fiber reinforced composite parts |
| JPS5475405A (en) * | 1977-11-29 | 1979-06-16 | Honda Motor Co Ltd | Production of one directional fiber reinforced composite material |
| JPS5630070A (en) * | 1979-08-17 | 1981-03-26 | Honda Motor Co Ltd | Manufacture of fiber-reinforced composite material |
-
1983
- 1983-11-26 JP JP58222947A patent/JPS60114540A/en active Pending
-
1984
- 1984-08-09 GB GB08420256A patent/GB2151514B/en not_active Expired
- 1984-08-13 CA CA000460907A patent/CA1240904A/en not_active Expired
- 1984-08-29 DE DE19843431778 patent/DE3431778A1/en not_active Withdrawn
- 1984-08-30 FR FR8413437A patent/FR2555503B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE3431778A1 (en) | 1985-06-05 |
| JPS60114540A (en) | 1985-06-21 |
| GB2151514A (en) | 1985-07-24 |
| GB2151514B (en) | 1987-07-08 |
| GB8420256D0 (en) | 1984-09-12 |
| FR2555503A1 (en) | 1985-05-31 |
| FR2555503B1 (en) | 1987-10-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5381850A (en) | Composite casting process | |
| CA2208377A1 (en) | Composite, internal reinforced ceramic cores and related methods | |
| RU2002128179A (en) | CASTING ROD FOR CASTING ON CASTED MODELS (OPTIONS), ASSEMBLY, CASTING ROD-SHELL CASING, CASTING MOLD AND CASTING RECEIVED USING THIS ROD | |
| JPS63303649A (en) | Manufacture of metallic product and product | |
| CN1186750A (en) | Bicycle hollow crank arm and its producing method | |
| JPH02422B2 (en) | ||
| CA1240904A (en) | Fiber-reinforced composite material and method of producing the same | |
| GB2200583A (en) | Composite engine piston and its manufacture by casting | |
| EP0850827A3 (en) | Bicycle crank and method for manufacturing same | |
| GB2150867A (en) | Fiber-reinforced composite material | |
| US5241737A (en) | Method of making a composite casting | |
| JPH04231163A (en) | Manufacture for bimaterial parts by molding | |
| EP0785039A3 (en) | Solidification of an article extension from a melt using a ceramic mold | |
| JPH0656088B2 (en) | Lightweight engine valve and manufacturing method thereof | |
| US4534400A (en) | Method for making a reinforced article for an internal combustion engine | |
| JPH0128667B2 (en) | ||
| JPS5967335A (en) | Fiber reinforced composite member and its production | |
| CA2138592C (en) | Reinforcing material of connecting rod for automobile | |
| JPS62238039A (en) | Manufacture of fiber reinforced composite member | |
| US4892130A (en) | Method for making a reinforced article for an internal combustion engine | |
| JPH0656090B2 (en) | Hollow engine valve manufacturing method | |
| JPH05293626A (en) | Manufacture of brake calliper | |
| JP2887802B2 (en) | Aluminum alloy forming method | |
| JPS606265A (en) | Production of composite fiber member | |
| JPS57177873A (en) | Composite body of aluminum casting |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |