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1. (WO2015042765) ENGINE PISTON MATERIAL AND PROCESSING PROCESS THEREOF

Pub. No.:    WO/2015/042765    International Application No.:    PCT/CN2013/001655
Publication Date: Fri Apr 03 01:59:59 CEST 2015 International Filing Date: Tue Dec 31 00:59:59 CET 2013
IPC: C22C 21/04
Applicants: LONGKOU DACHUAN PISTON CO., LTD
龙口市大川活塞有限公司
Inventors: XIE, Julin
解居麟
ZHENG, Deben
郑德本
Title: ENGINE PISTON MATERIAL AND PROCESSING PROCESS THEREOF
Abstract:
The present invention relates to the field of the automobile piston processing technology. Related are an engine piston material and a processing process thereof. It overcomes a disadvantage of a traditional piston that a cylinder gap is too large to meet a requirement of a new-standard engine. A proportion of each component thereof is: Si: 11-13%, Cu: 1-1.5%, Mg: 0.8-1.5%, Ni: 0.8-1.5%, Mn: 0.3-0.8%, Cr: 0.1-0.3%, Ti: 0.05-0.2%, C: 0.1-0.3%, a rare earth mixture: 0.1-0.3%, Fe<0.7%, Zn<0.3%, Zr-<0.05%, Pb<0.05%, Sn<0.05%, Ca<0.02%, and rest is Al; desired material is obtained by adding trace elements such as Mn, Cr, Ti, C, rare earths and the like on a basis of ZL109 aluminum alloy, and processing using electromagnetic stirring, casting and thermal treatment processes.