Research on Metal Flow of Large Diameter Internal Thread during Cold Extrusion for Q460 High Strength Steel

摘要：

According to the forming process of cold extruded internal thread for aircraft landing gear, the microhardness and the mechanical properties in the surface layer of cold extruded internal thread after heat treatment were investigated. The results showed that in comparison to the cold extruded internal thread without heat treatment, the microhardness and the tensile strength of crest, flank and root of the cold extruded thread after heat treatment were improved evidently. Its sustained maximum pulling force reached to 202.68KN, and it increased 9.24％. And the changes of its microhardness along the depth of the tooth were the same as the cold extruded internal thread without heat treatment, but its hardness depth decreased a little and the change gradient of the microhardness curve was lower.

关键词： heat treatment internal thread microhardness mechanical properties

作者: H. Miao D. W. Zuo R. H. Zhang H. F. Wang

作者单位: Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China Yangzhou University, Yangzhou 225009, P.R.China

会议类型: 国际会议

会议名称: The 2nd Asian Materials Database Symposium(第二届亚洲材料数据库会议 AMDS 2010)

会议地点: 三亚

会议语种:英文

页码: 200-205

在线出版日期: 2010-03-10（万方平台首次上网日期，不代表论文的发表时间）