摘要
采用电弧增材制造技术制备了超低碳中合金钢火炮零件,对其进行了正火、高温回火和调质处理以及切削加工试验和功能性应用试验,并与45CrNiMoVA钢锻件作了对比。结果表明:电弧增材制造的零件表面较粗糙,低倍组织符合要求;零件热处理后强度和塑性达到了45CrNiMoVA钢锻件的水平,但常温和低温冲击韧度较差;零件切削加工性能良好,但难以通过热处理达到局部高硬度;零件能满足功能性使用要求。
Ultra-low carbon medium-alloy steel gun parts were fabricated by an arc additive manufacturing technology, then were normalized and high temperature tempered, and quenched and tempered, as well as were subjected to machining test and functional application test, and were compared with the 45 CrNiMoVA steel forging. The results showed that(a) the arc-additive-manufactured parts exhibited rougher surface and macrostructure which conformed with the requirement;(b) after the heat treating, the parts given strength and plasticity which were comparable to the 45 CrNiMoVA steel forging, but poor impact toughness at room temperature and low temperature;(c) the parts had good machinability, however, were difficult to be locally hardened to high hardness with heat treating;and(d) the parts were able to meet the functional application requirement.
作者
高军
雷丙旺
王宏奭
曾晓雁
霍进良
王鸿雁
GAO Jun;LEI Bingwang;WANG Hongshi;ZENG Xiaoyan;WANG Hongyan;HUO Jinliang(Inner Mongolia North Heavy Industry Group Co.,Ltd.,Baotou 014030,Inner Mongolia China;Wuhan National laboratory Huazhongof Science&Technology,Wuhan 430074,Hubei China)
出处
《热处理》
CAS
2022年第2期37-40,共4页
Heat Treatment
关键词
电弧增材制造
试制件
热处理
机加工性能
应用试验
arc additive manufacturing
trial-produced part
heat treatment
machinability
application test
