碳钢膏剂法B-V共渗工艺参数的研究  

A Study of Technological Parameters of Vanadium-Boride by Pasty Agent on Carbon Steel

作　　者：李凤珍[1] 张振信[1] 刘兆晶[1] 张广宏 

机构地区：[1]哈尔滨科学技术大学机械工程二系

出　　处：《哈尔滨科学技术大学学报》1990年第3期228-233,共6页

摘　　要：本文采用20,45,T 7,T12四种碳钢材料,探索了碳钢膏剂法 B-V 共渗的工艺参数及钢中 C 含量对共渗温度、时间的影响,使用的是比较理想的Ⅲ膏剂配方.共渗后根据渗层显微硬度和渗层深度确定碳钢共渗工艺参数.实验表明,钢中的含 C 量对共渗工艺有明显影响.当钢中 C 含量低于或等于0.77%时宜采用940℃共渗温度和4h 共渗保温时间.当 C 含量高于0.77%时碳钢共渗温度以提高至960℃,共渗保温时间仍可保持4h.对渗层进行 X 射线分析,渗层中含有 Fe_2B,VC 和 AlV_3等相.渗层显微硬度有显著提高.本文还对碳钢 B-V 共渗机理进行了初步探讨.This paper deals with the technology of vanadium-boriding carbon steel by pasty agent.According to the data of surface hardness and layer depth of vanadium-boriding,the optimum composition of the pasty agent and the tech- nological parameters have been obtained. The experiments have shown that the optimum vanadium-boriding tempera- ture is 940—960℃ and technological time is 4 hours.The technological tempe- rature and time and the carbon content of the steel have a remarkable influence on the effect of the vanadium-boriding technology.

关 键 词：碳钢 膏剂法 硼钒共渗 

分 类 号：TG156.87[金属学及工艺—热处理]