基于强力砂带磨削的核电高压容器内表面20Cr10Ni不锈钢堆焊层磨削性能研究  

Study on the Grinding Capability of 20Cr10Ni Stainless Steel Surfacing Layer in Inner of Nuclear High-pressure Vessel Based on Heavy Abrasive Grinding

作　　者：黄雪松[1] 黄云[1] 王洋 

机构地区：[1]重庆大学机械工程学院,重庆400044 [2]重庆市材料表面精密加工及成套装备工程技术研究中心,重庆400021

出　　处：《机床与液压》2008年第2期14-16,共3页Machine Tool & Hydraulics

基　　金：国家863目标导向类课题重点资助项目(2006AA04Z204)

摘　　要：根据对核电高压容器内表面不锈钢20Cr10Ni堆焊层的工艺要求,提出了堆焊层强力砂带磨削工艺;理论分析了奥氏体不锈钢20Cr10Ni强力砂带的磨损特征,弄清了影响磨削性能的根本原因,是由于单个磨粒切刃的法向接触压力过小,钝化的微晶磨粒不能及时破碎脱落所致,削弱了砂带的自锐作用。运用砂带磨削试验机和测试系统研究了奥氏体不锈钢20Cr10Ni强力砂带的磨削性能。试验结果表明,采用较大的法向压力或适当增大磨削速度的磨削参数,可以高效发挥奥氏体不锈钢20Cr10Ni强力砂带的磨削性能。According to technical requirements of 20Cr10Ni stainless steel surfacing layer in inner of nuclear high-pressure vessel, the heavy abrasive grinding process for the surfacing layer was put forward. The fragmentized characteristics of Austenitic stainless steel 20Cr10Ni heavy belt abrasive belt were analyzed in theory. The reason of low grinding efficiency of belt was found out, which is that the vertical contact pressure of single grain is so little, the worn grains can＇t break up and fall off in time and the self-sharp ability of the belt is reduced. Using belt grinding machine and test system, 20Cr10Ni austenitic stainless steel abrasive belt grinding performance was researched. The results indicate that increasing the vertical pressure or grinding speed is beneficial to the grinding process of 20Cr10Ni austenitic stainless steel heavy abrasive belt.

关 键 词：堆焊层 核电高压容器 强力砂带磨削 

分 类 号：TG580.619.2[金属学及工艺—金属切削加工及机床]