JPH04119264A - Piston with cooling cavity - Google Patents
Piston with cooling cavityInfo
- Publication number
- JPH04119264A JPH04119264A JP23416590A JP23416590A JPH04119264A JP H04119264 A JPH04119264 A JP H04119264A JP 23416590 A JP23416590 A JP 23416590A JP 23416590 A JP23416590 A JP 23416590A JP H04119264 A JPH04119264 A JP H04119264A
- Authority
- JP
- Japan
- Prior art keywords
- piston
- cooling cavity
- piston ring
- ring groove
- porous metal
- 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
- 238000001816 cooling Methods 0.000 title claims abstract description 37
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000002131 composite material Substances 0.000 claims abstract description 19
- 230000002093 peripheral effect Effects 0.000 claims abstract description 19
- 229910018487 Ni—Cr Inorganic materials 0.000 claims description 3
- 239000000470 constituent Substances 0.000 abstract description 3
- 239000000463 material Substances 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 229910000838 Al alloy Inorganic materials 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005254 chromizing Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Classifications
-
- 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
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
-
- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/24—After-treatment of workpieces or articles
- B22F3/26—Impregnating
-
- 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
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/002—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of porous nature
-
- 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
- F02F3/10—Pistons having surface coverings
- F02F3/105—Pistons having surface coverings the coverings forming a double skirt
-
- 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
- F02F3/26—Pistons having combustion chamber in piston head
-
- 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
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、ピストンリング溝の近傍に冷却空洞を設け
た冷却空洞付きピストンリングの改良に関する。DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to an improvement in a piston ring with a cooling cavity in which a cooling cavity is provided in the vicinity of a piston ring groove.
この発明は、冷却空洞付きピストンのピストンリング溝
周縁から上記冷却空洞の周縁までを複合材料にて強化す
ると共に、この複合材料中の多孔質金属の体積率を上記
ピストンリング溝の周縁領域と、上記冷却空洞の周縁領
域との間で異ならせることにより、ピストンの強度改善
およびピストンリング溝の耐摩耗性改善を併せて行った
ものである。In this invention, the area from the piston ring groove periphery of a piston with a cooling cavity to the periphery of the cooling cavity is reinforced with a composite material, and the volume ratio of porous metal in the composite material is set to be the same as that of the piston ring groove peripheral area. By making the circumferential area of the cooling cavity different, the strength of the piston and the wear resistance of the piston ring groove are improved.
従来の技術としては、例えば、特公昭６０−２５６１９
号公報および特開昭６２−１３１７７１号公報に示され
ているように、アルミニウム合金を高圧で多孔質金属に
浸透させて、機械的強度の改善を図るようにしたアルミ
ニウム合金複合材料がある。As a conventional technique, for example, Japanese Patent Publication No. 60-25619
As shown in Japanese Patent Publication No. 62-131771, there is an aluminum alloy composite material in which mechanical strength is improved by infiltrating a porous metal with an aluminum alloy under high pressure.
また特開昭５９−２１３９３号公報、特開昭５９−２１
８３４１号公報および特開昭５９−２１２１５９号公報
に示されているように、鉄、ニッケル、銅などから成る
多孔質金属と、アルミニウム合金との化合物層によって
アルミニウム合金の耐摩耗性を向上するようにしたもの
がある。Also, JP-A-59-21393, JP-A-59-21
As shown in Japanese Patent Application Laid-Open No. 8341 and Japanese Patent Application Laid-Open No. 59-212159, a compound layer of porous metal made of iron, nickel, copper, etc. and an aluminum alloy improves the wear resistance of the aluminum alloy. There is something I did.
多孔性金属を用いた複合材料が、必要な個所にこのよう
に使用されると、例えばピストンの強度や、耐摩耗性を
改善することができるが、上記２つの機械的性質には、
上記多孔質金属の体積率に関して互いに相反する傾向を
示すという問題がある。このため上記体積率を例えば６
０％以上にしてピストンリング溝の耐摩耗性の改善を図
れば、多孔質金属と、この多孔質金属に浸透させた金属
（例えばアルミニウム）間の界面に剥離などを生し、強
度上の懸念が起り易い。When composite materials using porous metals are used where necessary, they can improve the strength and wear resistance of pistons, for example, but the two mechanical properties mentioned above are
There is a problem in that the volume fraction of the porous metal exhibits contradictory trends. For this reason, the above volume ratio is set to 6, for example.
If the wear resistance of the piston ring groove is improved by increasing the wear resistance to 0% or more, peeling may occur at the interface between the porous metal and the metal (for example, aluminum) infiltrated into the porous metal, leading to concerns about strength. is likely to occur.
すなわち一般に、体積率が増加すればその増加につれて
耐摩耗性は改善されるが、界面強度は改善されない。逆
に体積率が減少すれば、その減少につれて界面強度は改
善されるが、耐摩耗性は改善されない。That is, in general, as the volume fraction increases, the wear resistance is improved, but the interfacial strength is not improved. Conversely, if the volume fraction decreases, the interfacial strength will improve as the volume fraction decreases, but the wear resistance will not.
本発明は上述の点に鑑み、複合材料がピストンリング溝
の耐摩耗性を改善するために局部的に使用されても、界
面強度が併せて改善されるような冷却空洞付きピストン
を提供するものである。In view of the above-mentioned points, the present invention provides a piston with a cooling cavity in which even if a composite material is locally used to improve the wear resistance of the piston ring groove, the interfacial strength is also improved. It is.
本発明は、ピストンリング溝の近傍に冷却空洞を設けた
冷却空洞付きピストンにおいて、少なくともトップ位置
を占める上記ピストンリング溝の周縁から上記冷却空洞
の周縁のうちこのピストンリング溝と対向する部分まで
を複合材料にて強化すると共に、この複合材料の構成要
素である多孔質金属の体積率を上記ピストンリング溝の
周縁領域と、上記冷却空洞の周縁領域との間で異ならせ
て冷却空洞付きピストンを構成した。The present invention provides a piston with a cooling cavity in which a cooling cavity is provided in the vicinity of a piston ring groove, from the periphery of the piston ring groove that occupies at least the top position to the portion of the periphery of the cooling cavity that faces the piston ring groove. A piston with a cooling cavity is reinforced with a composite material, and the volume ratio of the porous metal, which is a component of the composite material, is made different between the peripheral area of the piston ring groove and the peripheral area of the cooling cavity. Configured.
なお上記多孔質金属は、Ｎｉ−Ｃｒ系金属であることが
できる。また上記多孔質金属の体積率は、上記ピストン
リング溝の周縁領域で８〜７０％、上記冷却空洞周縁領
域で０．５〜５％であるのがよい。Note that the porous metal may be a Ni-Cr metal. The volume fraction of the porous metal is preferably 8 to 70% in the peripheral region of the piston ring groove and 0.5 to 5% in the peripheral region of the cooling cavity.
さらに上記多孔質金属は上記ピストンリング溝周縁から
上記冷却空洞周縁にかけ体積率の異なる薄板にて層状に
形成することができる。Furthermore, the porous metal can be formed in layers from the periphery of the piston ring groove to the periphery of the cooling cavity using thin plates having different volume ratios.
以下本発明の実施例につき、第１図〜第３図を参照しな
がら説明する。第１図に示す冷却空洞付きピストン１に
は、その右側に示す断面で明らかなように、ピストンリ
ング溝２の近傍に冷却空洞３が設けられている。Embodiments of the present invention will be described below with reference to FIGS. 1 to 3. The piston 1 with a cooling cavity shown in FIG. 1 is provided with a cooling cavity 3 in the vicinity of the piston ring groove 2, as is clear from the cross section shown on the right side thereof.
この冷却空洞３は、図示を省略したが、通路を介してピ
ストンｌの内部側と連通している。したがって、クラン
ク内の油が冷却空洞３内を流れてピストンｌの昇温を抑
制する。Although not shown, the cooling cavity 3 communicates with the inside of the piston l via a passage. Therefore, the oil in the crank flows within the cooling cavity 3 and suppresses the rise in temperature of the piston l.
ところでこのピストン１は、第２図に示すごとくトップ
位置を占めるピストンリング溝２の周縁から、上記冷却
空洞３の周縁のうちでこのピストンリング溝２と対向す
る部分までが複合材料４で強化されている。By the way, as shown in FIG. 2, this piston 1 is reinforced with a composite material 4 from the periphery of the piston ring groove 2 occupying the top position to the portion of the periphery of the cooling cavity 3 that faces the piston ring groove 2. ing.
またこの複合材料４の構成要素である多孔質金属４ａは
、第３Ｂ図に示すごとく環状体であり、第３Ａ図に示す
ようにその断面の輪郭の一部５は、第２図に示すごとく
冷却空洞３の周縁の一部と一致する曲線である。The porous metal 4a, which is a constituent element of this composite material 4, is an annular body as shown in FIG. 3B, and as shown in FIG. 3A, a part of its cross-sectional outline 5 is as shown in FIG. This is a curve that coincides with a part of the periphery of the cooling cavity 3.
次に多孔質金属４ａの断面を示した第３Ａ図から明らか
なごとく、上記多孔質金属４ａは体積率Ｖ、の異なる薄
板にて層状に形成されている。すなわちピストンリング
溝２の周縁領域にあって体積率Ｖ、が８〜７０％の最外
層６と、冷却空洞３の周縁領域にあって体積率Ｖ、が０
．５〜５％の最内層７と、これらの２層６および７の間
に介在して体積率ｖｆが上記両層６および７の体積率Ｖ
、の中間にある中間層８とから成る。なおこの中間層８
は、第３Ａ図では１層であるが複数層であってもよい。Next, as is clear from FIG. 3A showing a cross section of the porous metal 4a, the porous metal 4a is formed in a layered manner by thin plates having different volume ratios V. That is, the outermost layer 6 is located in the peripheral area of the piston ring groove 2 and has a volume ratio V of 8 to 70%, and the outermost layer 6 is located in the peripheral area of the cooling cavity 3 and has a volume ratio V of 0%.
．． The innermost layer 7 of 5 to 5% and the volume fraction Vf of the two layers 6 and 7 interposed between them are
, and an intermediate layer 8 located between . Furthermore, this middle layer 8
In FIG. 3A, there is one layer, but there may be multiple layers.
またこの場合の体積率Ｖ、は、外側層から内側層に向っ
て段階的に減少させる。Further, the volume ratio V in this case is decreased stepwise from the outer layer to the inner layer.
ところで上記多孔質金属４ａにはＮｉ −Ｃｒ系系金属
を使用し、Ｃｒの含有量は１０〜１００％の範囲とする
。なお最内層７はＮｉを使用してもよい。また上記Ｃｒ
は、例えば多孔質金属４ａにクロマイジング処理を施し
て、所定量を付与すればよい。By the way, Ni-Cr metal is used for the porous metal 4a, and the Cr content is in the range of 10 to 100%. Note that the innermost layer 7 may be made of Ni. In addition, the above Cr
For example, a predetermined amount may be applied by subjecting the porous metal 4a to chromizing treatment.
次に上記ピストンエの生産方法につき述べれば、先づ上
記環状の多孔質金属４ａを、冷却空洞３の中子等と共に
金型内の所定位置にセットし、温度７６０℃のアルミニ
ウム合金鋳物ＡＣ８Ａの溶湯を注入して、８００ｋｇ／
ｃｊの加圧下で高圧凝固鋳造を行う。Next, to describe the method for producing the piston, first, the annular porous metal 4a is set in a predetermined position in a mold together with the core of the cooling cavity 3, and the molten aluminum alloy casting AC8A at a temperature of 760°C is heated. 800kg/
High-pressure solidification casting is performed under pressure of cj.
またその後、ピストンリング溝２などを機械加工にて形
成する。After that, the piston ring groove 2 and the like are formed by machining.
以上本発明を１実施例につき説明したが、上記実施例は
本発明を限定するものでは決してなく、本発明の技術的
思想に基いて種々の変更が可能である。たとえば実施例
では多孔質金属に層状体を使用し、体積率Ｖ、は段階的
に変化させたが、体積率を連続的に変化させた一体物を
使用してもよい。Although the present invention has been described above with reference to one embodiment, the present invention is not limited to the above embodiment in any way, and various changes can be made based on the technical idea of the present invention. For example, in the embodiment, a layered body was used as the porous metal, and the volume fraction V was changed stepwise, but an integral body whose volume fraction was changed continuously may also be used.
本発明は上述のような構成であるから、ピストンリング
溝の周縁領域は、複合材料の構成要素である多孔質金属
の体積率が大である。したがってピストンリングが激し
く摺接しても、耐摩耗性が良好のために損耗は少ない。Since the present invention has the above-described configuration, the peripheral region of the piston ring groove has a large volume percentage of porous metal, which is a component of the composite material. Therefore, even if the piston rings are subjected to heavy sliding contact, there is little wear due to their good wear resistance.
また冷却空洞の周縁領域は上記多孔質金属の体積率が小
であるから、複合材料の界面強度が改善されて、ピスト
ンの強度が著しく向上する。Furthermore, since the volume fraction of the porous metal in the peripheral region of the cooling cavity is small, the interfacial strength of the composite material is improved, and the strength of the piston is significantly increased.
第１図〜第３Ｂ図は、この発明に係る冷却空洞付きピス
トンの１実施例を示すもので、第１図は同上ピストンの
その半分が断面である正面図、第２図は複合材料で強化
された同上ピストンの一部拡大断面図、
第３Ａ図は同上複合材料の構成要素である環状多孔質金
属の断面図、第３Ｂ図は同上多孔質金属の平面図である
。
なお図面に用いられた符号において、
１−−−−−−−−一冷却空洞付きピストン２−−−−
−・−−−一−ピストンリング溝３−−−−−−一・−
・−冷却空洞
４−・−・・・・・複合材料
４ａ・・・−・−・−多孔質金属
４ｂ・・−・・−・・・−アルミニウム合金鋳物５−一
一一一・・−断面の一部（ピストンリング溝と対向する
部分）
６−・−・−−−−−−一最外層（ピストンリング溝周
縁領域）７・−・・−−−−一−・最内層（冷却空洞周
縁領域）８−・・・・・−・・中間層
■、−・−一一一一・一体積率
である。Figures 1 to 3B show one embodiment of a piston with a cooling cavity according to the present invention, in which Figure 1 is a front view of the same piston with half of it in cross section, and Figure 2 is a reinforced with composite material. FIG. 3A is a cross-sectional view of an annular porous metal that is a component of the composite material, and FIG. 3B is a plan view of the porous metal. In addition, in the symbols used in the drawings, 1----------1 piston with cooling cavity 2--
−・−−−1−Piston ring groove 3−−−−−−1・−
-Cooling cavity 4--Composite material 4a--Porous metal 4b--Aluminum alloy casting 5-1-11-- Part of the cross section (portion facing the piston ring groove) 6--・------1 outermost layer (piston ring groove peripheral area) 7----1--innermost layer (cooling Cavity peripheral area) 8-...Middle layer ■, -...-1111.1 volume fraction.
Claims (1)
洞付きピストンにおいて、 少なくともトップ位置を占める上記ピストンリング溝の
周縁から上記冷却空洞の周縁のうちでこのピストンリン
グ溝と対向する部分までを複合材料にて強化すると共に
、 この複合材料の構成要素である多孔質金属の体積率を上
記ピストンリング溝の周縁領域と、上記冷却空洞の周縁
領域との間で異ならせたことを特徴とする冷却空洞付き
ピストン。２、上記多孔質金属がＮｉ−Ｃｒ系金属であ
る請求項１記載のピストン。 ３、上記多孔質金属の体積率を上記ピストンリング溝の
周縁領域で８〜７０％、上記冷却空洞周縁領域で０．５
〜５％とした請求項１記載のピストン。 ４、上記多孔質金属を上記ピストンリング溝周縁から上
記冷却空洞周縁にかけ体積率の異なる薄板にて層状に形
成した請求項１又は請求項３記載のピストン。[Scope of Claims] 1. In a piston with a cooling cavity provided with a cooling cavity near a piston ring groove, at least a portion of the piston ring groove from the periphery of the piston ring groove occupying the top position to the periphery of the cooling cavity. The parts facing each other are reinforced with a composite material, and the volume ratio of the porous metal, which is a component of this composite material, is made different between the peripheral area of the piston ring groove and the peripheral area of the cooling cavity. A piston with a cooling cavity characterized by: 2. The piston according to claim 1, wherein the porous metal is a Ni-Cr metal. 3. The volume ratio of the porous metal is 8 to 70% in the peripheral area of the piston ring groove, and 0.5% in the peripheral area of the cooling cavity.
The piston according to claim 1, wherein the content is 5%. 4. The piston according to claim 1 or 3, wherein the porous metal is formed in layers from the periphery of the piston ring groove to the periphery of the cooling cavity using thin plates having different volume ratios.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23416590A JPH04119264A (en) | 1990-09-04 | 1990-09-04 | Piston with cooling cavity |
| DE1991608819 DE69108819T2 (en) | 1990-09-04 | 1991-05-31 | Piston with cooling space near the piston ring grooves. |
| EP19910304943 EP0474332B1 (en) | 1990-09-04 | 1991-05-31 | A piston with a cooling cavity adjacent to piston-ring grooves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23416590A JPH04119264A (en) | 1990-09-04 | 1990-09-04 | Piston with cooling cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04119264A true JPH04119264A (en) | 1992-04-20 |
Family
ID=16966684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23416590A Pending JPH04119264A (en) | 1990-09-04 | 1990-09-04 | Piston with cooling cavity |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0474332B1 (en) |
| JP (1) | JPH04119264A (en) |
| DE (1) | DE69108819T2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5992500A (en) * | 1996-04-16 | 1999-11-30 | Cmi International, Inc. | Method of making a casting having a low density insert |
| US10648425B2 (en) | 2017-08-23 | 2020-05-12 | Tenneco Inc. | Piston with broad ovate gallery |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1519589A (en) * | 1974-09-11 | 1978-08-02 | Brico Eng | Metal articles of aluminium having load-bearing inserts |
| JPS54150510A (en) * | 1978-05-16 | 1979-11-26 | Mazda Motor Corp | Piston in aluminum alloy |
| US4987867A (en) * | 1989-11-06 | 1991-01-29 | Izumi Industries, Ltd. | Piston for internal combustion engines |
-
1990
- 1990-09-04 JP JP23416590A patent/JPH04119264A/en active Pending
-
1991
- 1991-05-31 DE DE1991608819 patent/DE69108819T2/en not_active Expired - Fee Related
- 1991-05-31 EP EP19910304943 patent/EP0474332B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE69108819D1 (en) | 1995-05-18 |
| EP0474332B1 (en) | 1995-04-12 |
| DE69108819T2 (en) | 1995-08-24 |
| EP0474332A1 (en) | 1992-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10208636B2 (en) | Highly thermally conductive valve seat ring | |
| US4008051A (en) | Composite metal articles | |
| KR102288185B1 (en) | valve seat ring | |
| JPS5830361B2 (en) | Method for manufacturing wear-resistant parts for internal combustion engines | |
| DE102007061601A1 (en) | Piston for an internal combustion engine and method for its production | |
| US5094149A (en) | Pistons having a component incorporated therein | |
| JP3705676B2 (en) | Manufacturing method of piston for internal combustion engine | |
| CN113084457B (en) | Metallographic strengthening manufacturing method of piston | |
| US6205836B1 (en) | Method for manufacturing piston by forging and forging die | |
| JPH04119264A (en) | Piston with cooling cavity | |
| JPH10288085A (en) | Piston for internal combustion engine | |
| EP0426920B1 (en) | Piston for an internal combustion engine | |
| WO2004038194A2 (en) | Power metal connecting rod | |
| US20190262904A1 (en) | Method for producing a component, in particular vehicle component, and correspondingly produced component | |
| EP1688517A1 (en) | Process of manufacturing a metallic adhesive layer on a cast piece | |
| JPS6293058A (en) | Production of composite member | |
| EP0870919A1 (en) | Piston for an internal combustion engine and a method for producing same | |
| JPS613809A (en) | Manufacture of composite member | |
| JP2790464B2 (en) | Aluminum alloy piston for internal combustion engine and method of manufacturing the same | |
| JPH0525591A (en) | Wire for piston ring and its manufacture | |
| JPS5922272Y2 (en) | piston | |
| JPS5871304A (en) | Composite metallic molded parts | |
| JPH03134186A (en) | Composite aluminum alloy member for internal combustion engine | |
| JPH11182333A (en) | Wear resistant ring of piston for internal combustion engine | |
| JPS625696B2 (en) |