JPH0353003Y2 - - Google Patents
Info
- Publication number
- JPH0353003Y2 JPH0353003Y2 JP1984125063U JP12506384U JPH0353003Y2 JP H0353003 Y2 JPH0353003 Y2 JP H0353003Y2 JP 1984125063 U JP1984125063 U JP 1984125063U JP 12506384 U JP12506384 U JP 12506384U JP H0353003 Y2 JPH0353003 Y2 JP H0353003Y2
- Authority
- JP
- Japan
- Prior art keywords
- piston
- head
- cooling cavity
- electron beam
- piston body
- 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
Landscapes
- Welding Or Cutting Using Electron Beams (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Description
【考案の詳細な説明】
＜産業上の利用分野＞
本考案は電子ビーム溶接ピストンに関し、ピス
トン内に容易に冷却空洞を形成し得るように企図
したものである。[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an electron beam welded piston, and is intended to allow a cooling cavity to be easily formed within the piston.
＜従来の技術＞
近年、ピストン内に冷却空洞を備えこの冷却空
洞に冷却液を流通させてピストンを冷却するよう
にした自動車エンジンが開発された。このような
ピストンを製作するには、冷却空洞に対応した塩
で形成した中子を金型内に備え、この金型内にア
ルミ合金の湯を注いでピストンを鋳造し、冷却硬
化後に前記中子を溶解して冷却空洞を作つてい
た。<Prior Art> In recent years, automobile engines have been developed in which a piston is provided with a cooling cavity and a cooling fluid is circulated through the cooling cavity to cool the piston. To manufacture such a piston, a core made of salt corresponding to the cooling cavity is provided in a mold, aluminum alloy hot water is poured into this mold to cast the piston, and after cooling and hardening, the core is filled with aluminum alloy. A cooling cavity was created by melting the particles.
＜考案が解決しようとする問題点＞
ところでかかる従来技術では中子を製作した
り、冷却硬化後に中子を取り除く作業が必要であ
るため製作が繁雑であつた。<Problems to be Solved by the Invention> However, in the prior art, the production was complicated because it required the production of a core and the removal of the core after cooling and hardening.
本考案は、上記従来技術に鑑み、冷却空洞を容
易に形成できるピストンを提供することを目的と
する。 SUMMARY OF THE INVENTION In view of the above-mentioned prior art, an object of the present invention is to provide a piston in which a cooling cavity can be easily formed.
＜問題点を解決するための手段＞
上記目的を達成する本考案の構成は、セラミツ
クの繊維、粒子、箔等に金属を侵入させて形成し
た複合材である頭部と、金属であるピストン本体
とを当接させて両者を電子ビームにより溶接して
なるピストンにおいて、頭部とピストン本体との
当接面をピストン側面からピストンキヤビテイに
向かつて直線状に形成すると共にその当接面のう
ち少なくとも一方の当接面に冷却空洞となる溝を
あらかじめ形成し、全当接面を電子ビーム溶接し
たことを特徴とする。<Means for Solving the Problems> The structure of the present invention that achieves the above-mentioned purpose consists of a head made of a composite material made by infiltrating ceramic fibers, particles, foil, etc. with metal, and a piston body made of metal. In this piston, the contact surface between the head and the piston body is formed in a straight line from the side surface of the piston toward the piston cavity, and A feature is that a groove serving as a cooling cavity is formed in advance on at least one contact surface, and all contact surfaces are electron beam welded.
＜実施例＞
以下本考案の実施例を図面に基づき詳細に説明
する。<Example> Hereinafter, an example of the present invention will be described in detail based on the drawings.
第１図は本考案の第１の実施例を示す。頭部１
は、炭化ケイ素（SiC）ウイスカ又は酸化アルミ
ニウム（Al2O3）繊維を金型内に配設し、アルミ
ニウム合金湯を上記金型内に注いで圧を加えて溶
湯鍜造して製作したものであり、その周面にはト
ツプリングが嵌入するためのリング溝１ａ形成さ
れており、その底面には冷却空洞２の一部となる
溝１ｂが形成され、更に、上面にはキヤビテイ１
ｃが形成されている。この頭部１はセラミツクを
含むため耐熱性及び強度が高い。一方、ピストン
本体３はアルミニウム合金をダイキヤステイング
して製作したものであり、その上面には冷却空洞
２の一部となる溝３ａが形成されている。 FIG. 1 shows a first embodiment of the invention. Head 1
is manufactured by placing silicon carbide (SiC) whiskers or aluminum oxide (Al 2 O 3 ) fibers in a mold, pouring aluminum alloy hot water into the mold and applying pressure to form the molten metal. A ring groove 1a into which a top ring is fitted is formed on its circumferential surface, a groove 1b forming a part of the cooling cavity 2 is formed on its bottom surface, and a cavity 1 is formed on its top surface.
c is formed. Since the head 1 contains ceramic, it has high heat resistance and strength. On the other hand, the piston body 3 is manufactured by die-casting an aluminum alloy, and a groove 3a which becomes a part of the cooling cavity 2 is formed on its upper surface.
頭部１とピストン本体３とは電子ビーム溶接に
より溶着されており、ちようど溝１ｂと溝３ａと
が向い合つて冷却空洞２が形成されている。この
場合、頭部１とピストン本体３の当接面がピスト
ン側面からピストンキヤビテイ１ｃに向かつて直
線状になつているため、図中矢印Ａで示すように
外周側から電子ビームを照射しつつ頭部１及びピ
ストン本体３を回転するだけで当接面を一回にま
とめて溶着できる。もちろん図中矢印Ｂで示すよ
うに内周側から電子ビームを照射するようにして
もよい。 The head 1 and the piston body 3 are welded together by electron beam welding, and the grooves 1b and 3a face each other to form a cooling cavity 2. In this case, since the contact surface between the head 1 and the piston body 3 is linear from the side of the piston toward the piston cavity 1c, the electron beam is irradiated from the outer circumferential side as shown by arrow A in the figure. By simply rotating the head 1 and the piston body 3, the contact surfaces can be welded all at once. Of course, the electron beam may be irradiated from the inner peripheral side as shown by arrow B in the figure.
かかる本実施例ではあらかじめ溝１ｂ，３ａを
形成しておき頭部１とピストン本体３とを電子ビ
ームで溶着するだけで簡単に冷却空洞２が形成で
きる。 In this embodiment, the cooling cavity 2 can be easily formed by forming the grooves 1b and 3a in advance and then welding the head 1 and the piston body 3 together using an electron beam.
第２図は本考案の第２の実施例であり、１は頭
部、１ｂは溝、２は冷却空洞、３はピストン本
体、３ａは溝であり、頭部１とピストン本体３と
が電子ビーム溶接されて冷却空洞２が形成されて
いる。更にこの実施例では頭部１とピストン本体
３との境界の外周側端がリング溝の底にくるよう
にしている。 FIG. 2 shows a second embodiment of the present invention, in which 1 is a head, 1b is a groove, 2 is a cooling cavity, 3 is a piston body, and 3a is a groove, and the head 1 and the piston body 3 are connected to each other. A cooling cavity 2 is formed by beam welding. Further, in this embodiment, the outer circumferential edge of the boundary between the head 1 and the piston body 3 is located at the bottom of the ring groove.
第３図は本考案の第３の実施例である。この実
施例では頭部１にのみ溝１ｂが形成されており、
頭部１とピストン本体３と電子ビーム溶接し、溝
１ｂにピストン本体３の上面を当てがうことによ
り冷却空洞２が形成されている。 FIG. 3 shows a third embodiment of the present invention. In this embodiment, the groove 1b is formed only in the head 1,
A cooling cavity 2 is formed by electron beam welding the head 1 and the piston body 3 and by applying the upper surface of the piston body 3 to the groove 1b.
なおピストン本体３にのみ溝を形成するように
していてもよい。 Note that the groove may be formed only in the piston body 3.
＜考案の効果＞
以上実施例とともに具体的に説明したように本
考案によれば冷却空洞となる溝をあらかじめ形成
しておき、頭部とピストン本体とをビーム溶接す
るだけで容易に冷却空洞を形成することができ
る。<Effects of the invention> As explained above in detail with the embodiments, according to the invention, the cooling cavity can be easily formed by forming a groove to serve as the cooling cavity in advance and beam welding the head and the piston body. can be formed.
第１図、第２図及び第３図はそれぞれ本考案の
第１、第２及び第３の実施例を示す断面図であ
る。
図面中、１は頭部、１ｂは溝、１ｃはピストン
キヤビテイ、２は冷却空洞、３はピストン本体、
３ａは溝である。
1, 2, and 3 are sectional views showing first, second, and third embodiments of the present invention, respectively. In the drawing, 1 is the head, 1b is the groove, 1c is the piston cavity, 2 is the cooling cavity, 3 is the piston body,
3a is a groove.
Claims (1)
せて形成した複合材である頭部と、金属であるピ
ストン本体とを当接させて両者を電子ビームによ
り溶接してなるピストンにおいて、頭部とピスト
ン本体との当接面をピストン側面からピストンキ
ヤビテイに向かつて直線状に形成すると共にその
当接面のうち少なくとも一方の当接面に冷却空洞
となる溝をあらかじめ形成し、全当接面を電子ビ
ーム溶接したことを特徴とする電子ビーム溶接ピ
ストン。 In a piston, the head, which is a composite material made by infiltrating ceramic fibers, particles, foil, etc. with metal, is brought into contact with the piston body, which is metal, and the two are welded using an electron beam. The abutting surface with the piston body is formed in a straight line from the side of the piston toward the piston cavity, and at least one of the abutting surfaces is pre-formed with a groove to serve as a cooling cavity. An electron beam welded piston characterized by electron beam welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12506384U JPS6139453U (en) | 1984-08-17 | 1984-08-17 | Electron beam welding piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12506384U JPS6139453U (en) | 1984-08-17 | 1984-08-17 | Electron beam welding piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6139453U JPS6139453U (en) | 1986-03-12 |
| JPH0353003Y2 true JPH0353003Y2 (en) | 1991-11-19 |
Family
ID=30683748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12506384U Granted JPS6139453U (en) | 1984-08-17 | 1984-08-17 | Electron beam welding piston |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6139453U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6825450B2 (en) * | 2002-11-06 | 2004-11-30 | Federal-Mogul World Wide, Inc. | Piston and method of manufacture |
| US9856820B2 (en) * | 2010-10-05 | 2018-01-02 | Mahle International Gmbh | Piston assembly |
| DE102011006409B4 (en) * | 2011-03-30 | 2013-03-28 | Federal-Mogul Nürnberg GmbH | A method for producing a one-piece cooling channel piston for an internal combustion engine, as well as a cooling channel piston produced by the method |
| US8671905B2 (en) * | 2011-07-12 | 2014-03-18 | Mahle International Gmbh | Piston for an internal combustion engine and method for its production |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4713601U (en) * | 1971-03-17 | 1972-10-18 | ||
| JPS4822962U (en) * | 1971-07-21 | 1973-03-15 | ||
| JPS59110848A (en) * | 1982-12-16 | 1984-06-26 | Kawasaki Heavy Ind Ltd | Piston crown and its manufacturing method |
| JPS6034546U (en) * | 1983-08-13 | 1985-03-09 | 三菱重工業株式会社 | piston for engine |
-
1984
- 1984-08-17 JP JP12506384U patent/JPS6139453U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6139453U (en) | 1986-03-12 |
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