Title:
【発明の名称】ピストン及びその製造方法
Document Type and Number:
Japanese Patent JP2613599
Kind Code:
B2
Abstract:
PURPOSE: To improve durability of a piston by partially binding aluminum-base powder sintered alloy consisting of mechanically alloyed powder to a high heat resistant demanding part in an aluminum alloy piston main body. CONSTITUTION: A sintered material 21 formed of aluminum-base powder sintered alloy consisting of mechanically alloyed powder is partially bound via a joint face 23 to a part demanding high heat resistance, for example, to an opening part end face of a direct injection type combustion chamber in a connected member 22 for an aluminum piston by means of a non-fusion welding method using no filler metal such as a friction pressing method or a limited fusion welding method using electron beams. In application of the friction welding method, a burr is extruded from both end parts 24 of the joint face 23 because of plastic flow, and at the same time, oxides, oils, or dust are eliminated from the both end parts 24. In this way, a life of the piston can be greatly prolonged.
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Inventors:
Wataru Shioda
Akihiro Imai
Akihiro Imai
Application Number:
JP18885587A
Publication Date:
May 28, 1997
Filing Date:
July 30, 1987
Export Citation:
Assignee:
Sumitomo Electric Industries, Ltd.
Gintermetal Berg Kreppseege Gezel Shaft Mitt Beschlenktel Haftung
Izumi Industry Co., Ltd.
Gintermetal Berg Kreppseege Gezel Shaft Mitt Beschlenktel Haftung
Izumi Industry Co., Ltd.
International Classes:
B23P15/10; F02B23/06; F02F3/00; F02F3/26; F16J1/01; (IPC1-7): F02F3/26; B23P15/10; F02F3/00
Domestic Patent References:
| JP59213939A | ||||
| JP59115453A | ||||
| JP58503B2 |
Attorney, Agent or Firm:
Shotaro Mogami