JPH02233858A - Manufacture of aluminum alloy forged piston - Google Patents
Manufacture of aluminum alloy forged pistonInfo
- Publication number
- JPH02233858A JPH02233858A JP5481589A JP5481589A JPH02233858A JP H02233858 A JPH02233858 A JP H02233858A JP 5481589 A JP5481589 A JP 5481589A JP 5481589 A JP5481589 A JP 5481589A JP H02233858 A JPH02233858 A JP H02233858A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- reinforcing member
- recess
- forging material
- combustion chamber
- 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.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 238000005242 forging Methods 0.000 claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 54
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000002485 combustion reaction Methods 0.000 claims abstract description 21
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 14
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 9
- 239000000956 alloy Substances 0.000 claims abstract description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 45
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 18
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- 239000011701 zinc Substances 0.000 claims description 6
- 229910052725 zinc Inorganic materials 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 5
- 238000010791 quenching Methods 0.000 abstract 1
- 230000000171 quenching effect Effects 0.000 abstract 1
- 238000005496 tempering Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 238000005304 joining Methods 0.000 description 3
- 239000007790 solid phase Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910017818 Cu—Mg Inorganic materials 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F2200/00—Manufacturing
- F02F2200/04—Forging of engine parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/02—Pistons having means for accommodating or controlling heat expansion
- F02F3/04—Pistons having means for accommodating or controlling heat expansion having expansion-controlling inserts
- F02F3/045—Pistons having means for accommodating or controlling heat expansion having expansion-controlling inserts the inserts being located in the crown
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
- F05C2201/00—Metals
- F05C2201/02—Light metals
- F05C2201/021—Aluminium
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
- Forging (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明はアルミニウム合金製鍛造ピストンの製造方法に
関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for manufacturing a forged aluminum alloy piston.
（従来の技術）
従来、アルミニウム製ピストンとしてはＪＩＳ−ＡＣ８
Ａ等の鋳造用アルミニウムよりなるアルミニウム鋳造品
が用いられてきたが、ピストンを構成する鋳造用アルミ
ニウムの熱膨張率が、シリンダーを構成する鋳鉄の熱膨
張率よりも大きいため、ピストンクリアランスをエンジ
ンの低温時に大きく設定せざるを得ない。このため、エ
ンジンの低温時にステップ音が発生し易く、エンジン騒
音が避けられないという問題がある。(Prior art) Conventionally, as an aluminum piston, JIS-AC8
Aluminum castings made of cast aluminum such as A have been used, but the coefficient of thermal expansion of the cast aluminum that makes up the piston is greater than that of the cast iron that makes up the cylinder, so the piston clearance is You have to set it higher when the temperature is low. Therefore, there is a problem that step noise is likely to occur when the engine is at a low temperature, and engine noise is unavoidable.
そこで、ピストン用材料として、従来の鋳造用アルミニ
ウムに代えて、熱膨張率が低いアルミニウムー高硅素系
の急冷凝固アルミニウム粉末合金を用いることが提案さ
れている。Therefore, it has been proposed to use an aluminum-high silicon rapidly solidified aluminum powder alloy with a low coefficient of thermal expansion as a piston material in place of conventional casting aluminum.
ところが、前記急冷凝固アルミニウム粉末合金は、熱膨
張率が低い反面、硅素が多量に添加されているため、延
性に劣り、熱疲労によりクラックが発生しやすいと共に
発生したクラックが拡大、進展しやすいという特徴を有
している。このため、急冷凝固アルミニウム粉末合金よ
りなる鍛造ピストンは熱疲労に対して弱いという問題が
ある。However, although the rapidly solidified aluminum powder alloy has a low coefficient of thermal expansion, it has poor ductility due to the addition of a large amount of silicon, and is prone to cracking due to thermal fatigue, and the cracks that do occur are likely to expand and propagate. It has characteristics. For this reason, forged pistons made of rapidly solidified aluminum powder alloys have a problem of being susceptible to thermal fatigue.
この問題に対処するため、実公昭５６−３７０７５号公
報に示されるように、ピストン用素材の頂部である燃焼
室形成部に凹部を形成し、この凹部に延性に富むアルミ
ニウム又はアルミニウム合金よりなる補強部材を嵌入す
ると共に、ピストン用素材と補強部材とを溶接、鋳込、
或いは摩擦圧接等により接合する方法が提案されている
。In order to deal with this problem, as shown in Japanese Utility Model Publication No. 56-37075, a recess is formed in the combustion chamber forming part which is the top of the piston material, and this recess is reinforced with highly ductile aluminum or aluminum alloy. In addition to fitting the parts, the piston material and reinforcing member are welded, cast,
Alternatively, a method of joining by friction welding or the like has been proposed.
（発明が解決しようとする課題）
しかるに、前記ピストンの製造方法によると、ピストン
用素材と補強部材との接合工程が複雑にならざるを得な
いと共に、両者の接合強度が十分ではないという問題が
ある。(Problems to be Solved by the Invention) However, according to the piston manufacturing method described above, there is a problem that the process of joining the piston material and the reinforcing member is complicated, and the joining strength between the two is not sufficient. be.
そこで、本願発明者は、本発明に至る前提として、急冷
凝固アルミニウム粉末合金からなるピストン鍛造用素材
の燃焼室形成部に凹部を形成し、該凹部に延性に富むア
ルミニウム又はアルミニウム合金よりなる補強部材を嵌
入し、その後、前記ピストン鍛造用素材及び補強部材を
一体に鍛造成形する方法を考慮した。Therefore, as a premise for the present invention, the inventor of the present application formed a recess in the combustion chamber forming part of a piston forging material made of a rapidly solidified aluminum powder alloy, and provided a reinforcing member made of highly ductile aluminum or an aluminum alloy in the recess. A method was considered in which the piston forging material and the reinforcing member were integrally forged.
この方法によると、燃焼室形成部周辺における熱疲労ク
ラックの発生は防止できるが、鍛造時にアルミニウムの
表面に酸化膜が形成されるため、ピストン鍛造用素材と
補強部材との接合強度が十分ではなかった。According to this method, thermal fatigue cracks can be prevented from occurring around the combustion chamber forming part, but since an oxide film is formed on the surface of the aluminum during forging, the bonding strength between the piston forging material and the reinforcing member is insufficient. Ta.
前記に鑑みて、本発明は、ピストン鍛造用素材における
燃焼室形成部に形成された凹部に延性に富む補強部材を
嵌大して鍛造成形することにより、燃焼室形成部周辺に
おける熱疲労によるクラックの発生を防止しつつ、前記
ピストン鍛造用素材と補強部材間の接合強度を十分に確
保することを目的とする。In view of the foregoing, the present invention has been proposed to prevent the occurrence of cracks due to thermal fatigue in the vicinity of the combustion chamber forming part by fitting a highly ductile reinforcing member into the recess formed in the combustion chamber forming part of a piston forging material and forging the material. It is an object of the present invention to ensure sufficient bonding strength between the piston forging material and the reinforcing member while preventing this.
（課題を解決するための手段）
前記の目的を達成するため、本発明は、燃焼室形成部の
凹部に補強部材を嵌入する前に、該補強部材に対して亜
鉛めっき又はニッケルめっきを施すものである。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a method in which the reinforcing member is plated with zinc or nickel before the reinforcing member is inserted into the recess of the combustion chamber forming part. It is.
具体的に本発明の購じた解決手段は、急冷凝固アルミニ
ウム粉末合金よりなるピストン鍛造用素材の燃焼室形成
部に凹部を形成する一方、延性に富むアルミニウム又は
アルミニウム合金よりなり、前記凹部と嵌合する形状の
補強部材に亜鉛めっき又はニッケルめっきを施した後、
前記凹部に前記補強部材を嵌入し、しかる後、前記ピス
トン鍛造用素材及び補強部材を一体に鍛造成形し、さら
に焼入れ、焼戻しをする構成とするものである。Specifically, the solution purchased by the present invention is to form a concave portion in the combustion chamber forming portion of a piston forging material made of rapidly solidified aluminum powder alloy, and to form a concave portion made of highly ductile aluminum or aluminum alloy to fit into the concave portion. After applying zinc plating or nickel plating to the reinforcing member of the matching shape,
The reinforcing member is fitted into the recess, and then the piston forging material and the reinforcing member are forged together, and further quenched and tempered.
（作用）
前記の構成により、ピストン鍛造用素材の燃焼室形成部
に形成された凹部に延性に富むアルミニウム又はアルミ
ニウム合金よりなる補強部材を嵌入した後、両者を一体
に鍛造成形するので、ピストン鍛造用素材と補強部材と
の間で塑性流動が生じる。このため、ピストン鍛造用素
材の燃焼室形成部に延性に富む補強部材が存在している
ので、燃焼室形成部周辺に熱疲労によるクラックが発生
し難い。(Function) With the above configuration, after the reinforcing member made of highly ductile aluminum or aluminum alloy is fitted into the recess formed in the combustion chamber forming part of the piston forging material, the two are forged together, so that the piston forging is not possible. Plastic flow occurs between the material and the reinforcing member. Therefore, since the reinforcing member with high ductility is present in the combustion chamber forming portion of the piston forging material, cracks due to thermal fatigue are less likely to occur around the combustion chamber forming portion.
また、補強部材に亜鉛めっき又はニッケルめっきを施し
た後に、ピストン鍛造用素材及び補強部材を鍛造成形す
るので、鍛造時に、補強部材の表面に酸化膜が形成され
ず、また、補強部材表面の亜鉛又はニッケルがピストン
鍛造用素材に対して固相拡散するため、ピストン鍛造用
素材と補強部材とは冶金的に接合する。In addition, since the piston forging material and the reinforcing member are forged after the reinforcing member has been galvanized or nickel plated, an oxide film is not formed on the surface of the reinforcing member during forging. Alternatively, since nickel diffuses into the piston forging material in a solid phase, the piston forging material and the reinforcing member are metallurgically joined.
（実施例） 以下、本発明の一実施例を図面に基づいて説明する。(Example) Hereinafter, one embodiment of the present invention will be described based on the drawings.
まず、急冷凝固アルミニウム粉末合金よりなり、押出し
成形された丸棒状の素材を桑備した後、この丸棒状素材
を第１図に示すように所定寸法に切断してピストン鍛造
用素材１を形成する。そして、第１図及び第２図に示す
ように、このピストン鍛造用素材１の下部である燃焼室
形成部２に、下方が開放された横断面円形の凹部３を形
成する。First, an extruded round bar-shaped material made of rapidly solidified aluminum powder alloy is prepared, and then this round bar-shaped material is cut into predetermined dimensions as shown in FIG. 1 to form the piston forging material 1. . Then, as shown in FIGS. 1 and 2, a recess 3 with a circular cross section and open at the bottom is formed in the combustion chamber forming part 2, which is the lower part of the piston forging material 1.
次に、延性に富むアルミニウム又はアルミニウム合金よ
りなり、前記凹部３の内径と略同径に押出し成形された
丸棒状素材を準備した後、この丸棒状素材を前記凹部３
と嵌合し得る所定寸法に切断して円板状の補強部材４を
得る。そして、この補強部材４の表面に亜鉛めっき又は
ニッケルめっきを施した後、′こ゛の補強部材４を前記
ピストン鍛造用素材１の凹部３に嵌入する。Next, after preparing a round bar-shaped material made of highly ductile aluminum or aluminum alloy and extruded to have approximately the same diameter as the inner diameter of the recess 3, this round bar-shaped material is inserted into the recess 3.
A disk-shaped reinforcing member 4 is obtained by cutting the reinforcing member 4 into a predetermined size that can be fitted with the reinforcing member 4. After galvanizing or nickel plating the surface of this reinforcing member 4, the reinforcing member 4 is fitted into the recess 3 of the piston forging material 1.
次に、補強部材４が嵌入されたピストン鍛造用素材１を
加熱した後、第３図に示すように、鍛造用金型５のサイ
ド型６とダイアにより形成されたキャビティに挿入し、
その後、ボンチ８によりピストン鍛造用素材１を押圧し
て熱間鍛造法により鍛造成形する。このようにして鍛造
成形すると、ピストン鍛造用素材１と補強部材４との間
で塑性流動が生じ、補強部材４はピストン鍛造用素材１
と共に変形し、両者は一体に鍛造成形される。なお、第
３図において、７ａはピストン鍛造用素材１の燃焼室形
成部２に窪み２ａ（第４図参照）を形成するためダイア
の項面に設けられた凸部であり、８ａはピストン鍛造用
素材１のスカート部９に補強用凸部９ａ（第４図参照）
を形成するためボンチ８の周而に設けられた凹部である
。Next, after heating the piston forging material 1 into which the reinforcing member 4 has been fitted, as shown in FIG.
Thereafter, the piston forging material 1 is pressed by a punch 8 and forged by a hot forging method. When forged in this way, plastic flow occurs between the piston forging material 1 and the reinforcing member 4, and the reinforcing member 4 is transferred to the piston forging material 1.
The two are forged together and deformed together. In addition, in FIG. 3, 7a is a convex portion provided on the top surface of the diamond to form a recess 2a (see FIG. 4) in the combustion chamber forming portion 2 of the piston forging material 1, and 8a is a convex portion provided on the diameter of the piston forging material 1. A reinforcing convex portion 9a is provided on the skirt portion 9 of the material 1 (see Fig. 4).
This is a recess provided around the punch 8 to form a hole.
次に、鍛造成形されたピストン鍛造用素材１及び補強部
材４を焼入れした後、焼戻しをしてＴ６処理をする。こ
のようにすると、補強部材４の表面にめっきされた亜鉛
又はニッケルが、ピストン鍛造用素材１に固相拡散する
ので、両者は冶金的に接合する。Next, the forged piston forging material 1 and reinforcing member 4 are hardened, then tempered and subjected to T6 treatment. In this way, the zinc or nickel plated on the surface of the reinforcing member 4 diffuses into the piston forging material 1 in a solid phase, so that the two are metallurgically joined.
さらに、補強部材４を冶金的接合したピストン鍛造用素
材１を機械加工してアルミニウム合金製鍛造ピストンを
得る。Further, the piston forging material 1 to which the reinforcing member 4 is metallurgically joined is machined to obtain an aluminum alloy forged piston.
以下、本発明の具体例について説明する。Hereinafter, specific examples of the present invention will be described.
まず、ＡＩ−２５％Ｓｉ−Ｃｕ−Ｍｇ系の急冷凝固アル
ミニウム粉末合金よりなる押出し成形九捧を準備し、こ
の押出し成形丸棒を所定寸法に切断してピストン鍛造用
素材１を得た後、このピストン鍛造用素材１の下部に下
方が開放された横断面円形状の凹部３を形成した。その
後、この凹部３の内面をアルカリ溶液を用いて脱脂した
後、ＨＦによるエッチングを施した。First, an extruded bar made of a rapidly solidified aluminum powder alloy based on AI-25% Si-Cu-Mg was prepared, and this extruded round bar was cut into a predetermined size to obtain a piston forging material 1. A recess 3 with a circular cross section and an open bottom was formed in the lower part of this piston forging material 1. Thereafter, the inner surface of the recess 3 was degreased using an alkaline solution, and then etched using HF.
次に、純アルミニウム（Ｊ Ｉｓ−Ａ１０５０）よりな
り、前記凹部３の内径と略同径の押出し成形丸棒を、前
記凹部３の深さと同長か或いはこれよりも若干大きい長
さに切断して補強部材４を形成した後、この補強部材４
の表面、特に前記凹部３との当接面に約２０μｍの厚さ
の亜鉛めっきを施した。その後、この補強部材４をピス
トン鍛造用素材１の凹部３に嵌入した。Next, an extruded round bar made of pure aluminum (J Is-A1050) and having approximately the same diameter as the inner diameter of the recess 3 is cut into a length that is the same length as the depth of the recess 3 or slightly larger than this. After forming the reinforcing member 4, this reinforcing member 4
The surface, especially the contact surface with the recess 3, was galvanized to a thickness of about 20 μm. Thereafter, this reinforcing member 4 was fitted into the recess 3 of the piston forging material 1.
次に、補強部材４が嵌入されたピストン鍛造用素材１を
約４５０℃に加熱した後、鍛造用金型５のキャビティに
挿入し、その後、ポンチ７により圧力を加えて鍛造成形
した。Next, the piston forging material 1 into which the reinforcing member 4 was inserted was heated to about 450° C., and then inserted into the cavity of the forging die 5, and then pressure was applied with the punch 7 to form the piston forging.
次に、鍛造成形されたピストン鍛造用素材１及び補強部
材４を、５００℃の温度下で４時間保持した後水冷する
ことにより焼入れをし、その後、１８０℃の温度下で６
時間保持して焼戻しをし、さらに、機憾加工してアルミ
ニウム合金製鍛造ピストンを得た。Next, the forged piston forging material 1 and reinforcing member 4 are held at a temperature of 500°C for 4 hours and then quenched by water cooling, and then heated at a temperature of 180°C for 6 hours.
The piston was tempered by holding for a certain period of time, and then machined to obtain a forged aluminum alloy piston.
（発明の効果）
以上説明したように、本発明に係るアルミニウム合金製
鍛造ピストンの製造方法によると、ピストン鍛造用素材
の燃焼室形成部に形成した凹部に延性に富む補強部材を
嵌大した後、両者を一体に鍛造成形するので、ピストン
鍛造用素材の燃焼室形成部に延性に富む補強部材が存在
するため、燃焼室形成部周辺における熱疲労によるクラ
ックが防止される。(Effects of the Invention) As explained above, according to the method for manufacturing an aluminum alloy forged piston according to the present invention, after a highly ductile reinforcing member is fitted into a recess formed in a combustion chamber forming portion of a piston forging material, Since both are integrally forged, a reinforcing member with high ductility is present in the combustion chamber forming portion of the piston forging material, thereby preventing cracks due to thermal fatigue around the combustion chamber forming portion.
また、補強部材に亜鉛又はニッケルめっきを施した後、
ピストン鍛造用素材と補強部材とを鍛造成形するので、
鍛造時に、補強部材表面の亜鉛又はニッケルがピストン
鍛造用素材に固相拡散する。In addition, after zinc or nickel plating is applied to the reinforcing member,
Since the piston forging material and reinforcing member are forged,
During forging, zinc or nickel on the surface of the reinforcing member diffuses into the piston forging material in a solid phase.
このため、ピストン鍛造用素材と補強部材とは冶金的に
接合するので、両者の接合強度は強固となる。Therefore, since the piston forging material and the reinforcing member are metallurgically joined, the joint strength between the two becomes strong.
第１図〜第５図は本発明の一実施例であるアルミニウム
合金製鍛造ピストンの製造方法の製造工程を示し、第１
図はピストン鍛造用素材の断面図、第２図は同じくピス
トン鍛造用素材の平面図、第３図は鍛造成形用金型の断
面図、第４図は第５図における■〜■線断面図、第５図
は鍛造成形後のピストン鍛造用素材の平面図である。
１・・・ピストン鍛造用素材
２・・・燃焼室形成部
３・・・凹部
４・・・補強部材
５・・・鍛造用金型1 to 5 show the manufacturing steps of a method for manufacturing an aluminum alloy forged piston according to an embodiment of the present invention.
The figure is a sectional view of the piston forging material, Figure 2 is a plan view of the piston forging material, Figure 3 is a sectional view of the forging mold, and Figure 4 is a sectional view taken along the line ■ to ■ in Figure 5. , FIG. 5 is a plan view of the piston forging material after forging. 1... Piston forging material 2... Combustion chamber forming part 3... Recessed part 4... Reinforcement member 5... Forging mold
Claims (1)
鍛造用素材の燃焼室形成部に凹部を形成する一方、延性
に富むアルミニウム又はアルミニウム合金よりなり前記
凹部と嵌合する形状の補強部材に亜鉛めっき又はニッケ
ルめっきを施した後、前記凹部に前記補強部材を嵌入し
、しかる後、前記ピストン鍛造用素材及び補強部材を一
体に鍛造成形し、さらに焼入れ、焼戻しをすることを特
徴とするアルミニウム合金製鍛造ピストンの製造方法。(1) A recess is formed in the combustion chamber forming part of the piston forging material made of rapidly solidified aluminum powder alloy, and a reinforcing member made of highly ductile aluminum or aluminum alloy and shaped to fit into the recess is plated with zinc or nickel. After plating, the reinforcing member is fitted into the recess, and then the piston forging material and the reinforcing member are forged together, and further quenched and tempered. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5481589A JPH02233858A (en) | 1989-03-07 | 1989-03-07 | Manufacture of aluminum alloy forged piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5481589A JPH02233858A (en) | 1989-03-07 | 1989-03-07 | Manufacture of aluminum alloy forged piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02233858A true JPH02233858A (en) | 1990-09-17 |
Family
ID=12981196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5481589A Pending JPH02233858A (en) | 1989-03-07 | 1989-03-07 | Manufacture of aluminum alloy forged piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02233858A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5972071A (en) * | 1997-07-17 | 1999-10-26 | Yamaha Hatsudoki Kabushiki Kaisha | Aluminum alloy for piston and method for producing piston |
| US5992015A (en) * | 1996-05-20 | 1999-11-30 | Yamaha Hatsudoki Kabushiki Kaisha | Process for forming composite piston |
| US6032570A (en) * | 1998-04-10 | 2000-03-07 | Yamaha Hatsudoki Kabushiki Kaisha | Composite piston for machine |
| US6205836B1 (en) | 1998-07-09 | 2001-03-27 | Yamaha Hatsudoki Kabushiki Kaisha | Method for manufacturing piston by forging and forging die |
| US6240827B1 (en) | 1997-04-10 | 2001-06-05 | Yamaha Hatsudoki Kabushiki Kaisha | Composite piston for reciprocating machine |
| US6363608B1 (en) | 1997-04-10 | 2002-04-02 | Yamaha Hatsudoki Kabushiki Kaisha | Method of manufacturing piston |
| JP2019517389A (en) * | 2016-05-27 | 2019-06-24 | サン・ジャン・インダストリーズ | Method for producing parts composed at least partially of metal alloys, and optimization method |
-
1989
- 1989-03-07 JP JP5481589A patent/JPH02233858A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5992015A (en) * | 1996-05-20 | 1999-11-30 | Yamaha Hatsudoki Kabushiki Kaisha | Process for forming composite piston |
| US6209446B1 (en) | 1996-05-20 | 2001-04-03 | Yamaha Hatsudoki Kabushiki Kaisha | Piston for internal combustion engine and process of making same |
| US6240827B1 (en) | 1997-04-10 | 2001-06-05 | Yamaha Hatsudoki Kabushiki Kaisha | Composite piston for reciprocating machine |
| US6363608B1 (en) | 1997-04-10 | 2002-04-02 | Yamaha Hatsudoki Kabushiki Kaisha | Method of manufacturing piston |
| US5972071A (en) * | 1997-07-17 | 1999-10-26 | Yamaha Hatsudoki Kabushiki Kaisha | Aluminum alloy for piston and method for producing piston |
| US6032570A (en) * | 1998-04-10 | 2000-03-07 | Yamaha Hatsudoki Kabushiki Kaisha | Composite piston for machine |
| US6205836B1 (en) | 1998-07-09 | 2001-03-27 | Yamaha Hatsudoki Kabushiki Kaisha | Method for manufacturing piston by forging and forging die |
| JP2019517389A (en) * | 2016-05-27 | 2019-06-24 | サン・ジャン・インダストリーズ | Method for producing parts composed at least partially of metal alloys, and optimization method |
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