铸渗法制备活塞环硬质表层的工艺研究  

Study On Cast-in-place Surface Hardening Process for piston Rings

作　　者：谢明强[1] 魏晓伟[1] 

机构地区：[1]西华大学材料科学与工程学院,四川成都610039

出　　处：《西华大学学报（自然科学版）》2008年第3期52-55,共4页Journal of Xihua University:Natural Science Edition

摘　　要：研究了活塞环硬质表面制备铸渗工艺。结果表明:浇铸温度是影响活塞环表面合金化质量的主要影响因素。在浇铸温度为1620～1650℃、涂层厚度为2.0～3.5mm、粘结剂加入量为3%、熔剂的加入量为4%及烘烤温度为300℃保温3h的条件下,制备出的活塞环硬质表层的组织致密,合金层具有珠光体基体及大量的碳化物,并具有高硬度及高抗磨性。The cast-in-place surface hardening process was studied.The main process factor influencing the qualities of surface alloying of a piston ring was pouring temperature,and the optimum process parameters were determined,which provided a basis for practical production.The test result indicated that the best optimum pouring temperature was between 1620℃ and 1650℃ and keeping the temperature at 300℃ for 3 hours,as a result,the coating thickness was 2.0 mm to 3.5 mm,the amount of the binder is 3%,and the flux is 4%.In this way,the alloy layer with better quality can be obtained and has pearlite matrix and a lot of carbide leading to a high hardness and good wear resistance.

关 键 词：铸渗工艺 活塞环 表面合金化 最佳工艺参数 

分 类 号：TG174.445[金属学及工艺—金属表面处理]