Transactions of Materials and Heat Treatment

Title：Analysis of extrusion-defect of piston and numerical molding process optimization

Authors： DANG Li1 2 YANG Yong-shun1 2 GUO Jun-qing1 2(1.College of Material Science and Engineering Henan University of Science and Technology Luoyang 471003 China 2.Henan Key Laboratory of Advance Non-Ferrous-Material Luoyang 471003 China)

Unit：

KeyWords： piston extrusion wrinkle numerical simulation

ClassificationCode：TG376

year,vol(issue):pagenumber：2009,34(3):164-167

Abstract：

The reason of thin remainder for causing extrusion funnel defect was analyzed. Three methods including increasing stock thickness, the counterforce and the backward and forward combined extrusion were analyzed. The results show that increasing stock thickness way not only wastes the material, but also increases subsequent machining-work, so it is uneconomical;and the counterforce way tends to cause abnormal deformation;while the backward and forward combined extrusion way can avert the convection of the metal on the top of the piston pin hole, and avoid the extrusion funnel defect on the surface of the piston-crown efficiently.

Funds：

Reference：

[1]贾俐俐.挤压工艺及模具[M].北京:机械工业出版社,2004.
[2]刘达利,齐丕壤.新型铝活塞[M].北京:国防工业出版社,1999.
[3]宋仲明.LD11铝合金活塞裙等温挤压试验研究[J].机车车辆工艺,2000,(2):5-7.
[4]俞汉清,陈金得.金属塑性成形原理[M].北京:机械工业出版社,1999.
[5]温景林,丁桦,曹富荣,等.有色金属挤压及拉拔技术[M].北京:化学工业出版社,2007.

Service：

【This site has not yet opened Download Service】【Add Favorite】