电火花沉积工艺对点焊电极TiC沉积层厚度影响.doc

电火花沉积工艺对点焊电极TiC沉积层厚度的影响
电火花沉积工艺对点焊电极TiC沉积层厚
度的影响
焊接版(1)
?表面熔覆技术?
电火花沉积工艺对点焊电极TiC沉积层厚度的影响
罗成?-,熊翔,赵红利
(,湖南长沙410083;,湖北十堰442001)
摘要:为了改善镀锌钢板点焊电极的寿命,选用铬锆铜球型点焊电极,以TiC作为熔敷材料,进行了点焊电
(电容,基体电极转速,振动频率,沉积时间)
,电容是影响电火花沉积层厚度的主要因素;振动频率对沉
积层厚度有一定的影响;基体电极转速,:电容量
30000F,基体电极转速l320r/min,振动频率50Hz,(沉积前清洗)对其厚度影响很小.
后处理(沉积后700?x30min退火)促进元素扩散并减小沉积层厚度. 关键词:点焊电极;碳化钛;电火花沉积;沉积层;厚度
中图分类号:;:A文章编号:1001-3814(2007)01-0046-04 InfluenceofElectrosparkDepositionProcessesonThicknessof
TiCDepositionCoating
LUOCheng,DongShi-jie,?0NGXiang,zHA0Hong—li
(,CentralSouthUniversity,Changsha41~83,
Chino;
.,HubeiAutomotiveInstituteofIndustries,Shiyan442001,China)
Abstract:Inordertoimprovethelifeofspot-weldingelectrodeforzinc-coatedsteel,electrosparkdeposition(ESD,
processeswerestudiedtakingTiCaSfusingmaterialandCrZrC'uasspot-(suchas
,electroderotatespeedandvibratoryfrequency)pre-n_eannentaswellaSpost-treatmentofthe
s~
importantfactorthatinfluencesthethicknessofESDTiCcoating,thevibratoryfrequencyislessimportant,therotatespeed

30000electroderotatespeedl320r/min,vibratoryfrequency50I-I~-treatmenttoimprovethe
-treatment(annealingat
7oo?×
30minafterdeposition)canpromoteelementsdiffusinganddecreaSesthethicknessofthedepositioncoating.
Keywords:spot-weldingelectrode;TiC;electmsparkdeposition;coating;thickness

车工业的飞速发展,镀层钢板的用量越来越大【".
但是其电阻点焊可焊性较差.