两种砂轮磨削S136钢的实验研究  

Experimental study on the grinding performance of S136 mould steel by two kinds of wheel

作　　者：杨辉[1] 戴秋莲[1] 

机构地区：[1]华侨大学机电及自动化学院,厦门361021

出　　处：《金刚石与磨料磨具工程》2011年第5期63-68,共6页Diamond & Abrasives Engineering

基　　金：国家自然科学基金资助项目(51175192)

摘　　要：采用氧化铝砂轮和cBN砂轮对S136模具钢进行磨削实验,研究两种砂轮磨削S136钢过程中磨削力与磨削温度随磨削参数的变化规律,以及磨削力、磨削温度与磨削表面硬度、表面烧伤、表面粗糙度等的关系。实验结果表明:在相同的磨削参数下,氧化铝砂轮的磨削力比cBN砂轮的磨削力大10～30 N;氧化铝砂轮的磨削温度远远高于cBN砂轮的磨削温度,并且随着切深的增加,两种砂轮的温度差值增大;当磨削温度达到一定值时,工件的磨削表面出现烧伤,工件表面粗糙度急剧增加,工件表面硬度显著降低。In this paper,grinding experiments with alumina wheel and cBN wheel on S136 mould steel were carried out under different grinding conditions.The grinding forces and temperatures were measured.The influences of grinding forces and temperatures on the hardness,burn and roughness of the ground surface of S136 mould steel were also investigated.Experimental results revealed that the grinding force of alumina wheel was approximately 10 N to 30 N higher than that of cBN wheel,the grinding temperature of alumina wheel was much more higher than that of the cBN wheel.Their difference increased with the depth of cut increasing.When the grinding temperature reached to a certain amount,burn on the ground surface appeared.Accordingly,the surface hardness decreased and the surface roughness increased obviously.

关 键 词：磨削温度 表面硬度 表面烧伤 CBN砂轮 氧化铝砂轮 

分 类 号：TG58[金属学及工艺—金属切削加工及机床]