挤压铸造工艺对汽车活塞销性能的影响分析  

Influence of Squeeze Casting Process on Performance of Automobile Piston Pin

作　　者：左明伟[1] 王凤良[2] 曼茂立 田辉[1] ZUO Mingwei;WANG Fengliang;MAN Maoli;TIAN Hui(Chengde Petroleum College, Chengde 067000, China;Yantai Nanshan University, Yantai 265713, China)

机构地区：[1]承德石油高等专科学校,河北承德067000 [2]烟台南山学院,山东烟台265713

出　　处：《热加工工艺》2018年第9期97-99,103,共4页Hot Working Technology

基　　金：河北省科技厅科研项目(E2016411008)

摘　　要：采用不同的浇注温度和挤压比压进行了20Cr钢汽车活塞销的挤压铸造,并进行了拉伸和冲击性能的测试与分析。结果表明：随浇注温度从1250℃提高至1450℃,挤压比压从50 MPa增加至140 MPa,20Cr钢汽车活塞销的强度和冲击性能均先提高后下降。20Cr钢汽车活塞销的浇注温度和挤压比压分别优选为1375℃、125 MPa。The squeeze casting of 20 Cr steel automobile piston pin was carried out by using different pouring temperatures and extrusion specific pressures. And the tensile and impact properties were tested and analyzed. The results show that with pouring temperature increasing from 1250 ℃ to 1450 ℃, the extrusion specific pressure increasing from 50 MPa to 140 MPa, the strength and impact properties of 20 Cr steel automobile piston pin firstly increase and then decrease. The optimized pouring temperature and extrusion specific pressure of 20 Cr steel piston pin are 1375 ℃ and 125 MPa, respectively.

关 键 词：20CR钢 汽车活塞销 挤压铸造工艺 拉伸性能 冲击性能 

分 类 号：TG249.9[金属学及工艺—铸造]