稀土钒共渗工艺对工件尺寸精度的影响  

Effect of rare earth-vanadizing process on dimensional precision of workpiece

作　　者：何炫 屈银虎 成小乐[2] 符寒光 王钰凡 高浩斐 张红 HE Xuan;QU Yinhu;CHENG Xiaole;FU Hanguang;WANG Yufan;GAO Haofei;ZHANG Hong(School of Materials Science and Engineering, Xi’an Polytechnic University, Xi’an 710048, China;School of Mechanical and Electrical Engineering, Xi’an Polytechnic University, Xi’an 710048, China)

机构地区：[1]西安工程大学材料工程学院,陕西西安710048 [2]西安工程大学机电工程学院,陕西西安710048

出　　处：《西安工程大学学报》2020年第5期68-74,共7页Journal of Xi’an Polytechnic University

基　　金：陕西省重点研发计划项目(2020GY275,2018GY130);西安市科技计划项目-高校院所人才服务企业工程(2017074CG/RC037(XAGC002))。

摘　　要：为提高工件表面硬度、耐磨性及使用寿命,以硼砂熔盐为共渗盐浴的基盐,加入适量稀土元素,采用稀土钒共渗工艺对实心工件和空心工件表面进行强化,考察渗钒温度和时间对工件尺寸精度的影响。结果表明:经过950℃、6 h稀土钒共渗处理即可在工件表层制备高硬度钒碳化合物覆层;随着渗钒温度升高,渗钒时间延长,工件外径和内径尺寸变化均很明显。稀土钒共渗工艺可提高工件耐磨性并延长其使用寿命。In order to improve the surface hardness,wear resistance and service life of the workpiece,borax lava is selected as the base salt of the salt bath,and the appropriate amount of rare earth elements are added.The surface of solid workpiece and hollow workpiece is treated by rare earth-vanadizing process.The effect of vanadizing temperature and time on the dimensional accuracy of workpiece is investigated.The results show that after 950℃and 6 h vanadizing treatment,the high hardness vanadium carbon compound can be coated on the surface of the workpiece.With the increase of vanadizing temperature and time,the outer diameter and inner diameter of workpiece change obviously.The rare earth-vanadizing process can improve the wear resistance and prolong the service life of the workpiece.

关 键 词：渗钒 稀土钒共渗 工件 尺寸精度 表面强化 

分 类 号：TG156.8[金属学及工艺—热处理]