ITER极向场线圈销轴表面硬化工艺研发  

Study on the Surface Hardening Treatment of Poloidal Field Strut Dowel in ITER

作　　者：罗蓉蓉 孙振超 李鹏远 陈辉 LUO Rongrong;SUN Zhenchao;LI Pengyuan;CHEN Hui(Southwestern Institute of Physics,Chengdu 610225)

机构地区：[1]核工业西南物理研究院,成都610225

出　　处：《材料导报》2017年第A02期52-54,共3页Materials Reports

基　　金：ITER磁体支撑采购包项目

摘　　要：ITER极向场线圈(PF)磁体支撑销轴承载极向场线圈和部分真空室的质量,因使用环境非常恶劣,所以对其表面硬度及耐磨性能有很高的需求。按照ITER极向场线圈销轴的设计要求,研发了两种表面硬化处理方式,包括无界面N离子注入361LN强化处理以及采用在不锈钢表面堆焊一层马氏体不锈钢ER414L的方式分别不同程度地增加基底材料的表面硬度以及耐磨性能,可以满足小尺寸及超大型部件的表面硬化设计需求。Poloidal field(PF)strut dowel with stands the weight of the poloidal field coils and parts of the vacuum chamber,which needs the high surface hardness and excellent wear properties to meet the harsh environments.Two difference surface harde-ning treatment methods are researched according to the different designs of the ITER.One is to implant the nitrogen ion into the surface of 316LN plate,another is to surface welding the ER414L in the surface of substrate.Both of them are kindly increased the hardness and the wear-resistant of the substrate,which meet the surface treatment requirements of the samples and large products.

关 键 词：N离子注入 堆焊 ITER 

分 类 号：TG115.58[金属学及工艺—物理冶金]