Novel process for making piston ring
Title：
Novel process for making piston ring
Application Number：
 200410065856
Application Date：
 2004/12/23
Announcement Date：
 2005/06/29
Pub. Date：
 2007/12/05
Publication Number：
 1632297
Announcement Number：
 100353047
Grant Date：
 2007-12-5
Granted Pub. Date：
 2007-12-5
ApplicationType：
 Invention
State/Country：
 32[China|jiangsu]
IPC：
 F02F 5/00, F16J 9/26
Applicant(s)：
 Jiangsu Yizheng Weilong Piston Ring Co., Ltd.
Inventor(s)：
 Liu Wenjin, Zhu Youhui, Ma Mingxing
Key Words：
 Novel process, making, piston ring
Abstract：
 The new process for piston ring processing relates to a machining process of piston rings. The process comprises the following steps: casting, grinding, heat treating, grinding again, metalworking, laser intensification processing, thermal shaping, and then metalworking again. Since the surface layer of the piston ring is alloyed by laser or executed laser melting-covering processing and then is flash molten through high-energy laser bean, the substrate of finite depth at external surface of the piston ring is flash molten and then solidifies to from specific ceramic granule reinforced composite coating. The coating layer and the piston ring body are of a metallurgy structure and will not fall off or peel off under exogenous process. It is easy to realize the industrialisation production of the present invention, the product possesses excellent anti-adhesive wear, resistance to abrasion grains and excellent technology stability.
Claim：
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