文档介绍：华侨大学
硕士学位论文
陶瓷结合剂CBN砂轮磨削过程的热特性研究
姓名:杜存记
申请学位级别:硕士
专业:机械制造及其自动化
指导教师:徐西鹏
20060101
论文摘要
本文对使用陶瓷结合剂 CBN 砂轮的磨削温度热量分配比例
以及砂轮磨损进行了试验研究论文的主要结果如下
1 对陶瓷结合剂 CBN 砂轮磨削温度的试验结果表明陶瓷
结合剂 CBN 砂轮的磨削温度很低这主要是由于 CBN 磨料具有优
良的导热性能
2 磨削高速钢时陶瓷结合剂 CBN 砂轮的磨削比 G 可以达到
磨削黑色花岗石时陶瓷结合剂 CBN 砂轮的磨削比
可以达到磨削花岗石时砂轮的磨损形式为磨粒被
磨平而磨削高速钢时砂轮的磨损形式主要是磨粒的破碎与脱落
3 对陶瓷结合剂 CBN 砂轮磨削不同工件时的磨削比能进行
了试验研究结果表明干式磨削高速钢时磨削比能 u=
J/mm3 湿式磨削高速钢时磨削比能 u= J/mm3
J/mm3 干式磨削不锈钢时磨削比能 u= J/mm3 J/mm3
湿式磨削不锈钢时磨削比能 u= J/mm3 J/mm3 干式磨削
花岗石时磨削比能 u= J/mm3 J/mm3 湿式磨削花岗石
时磨削比能 u= J/mm3 J/mm3
4 通过试验测量结果与理论计算进行拟合得到了使用陶
瓷结合剂 CBN 砂轮磨削不同工件时传入工件的热量比例干式磨削
高速钢工件时大约有 57%到 75%的热量传入到了工件湿式磨削
高速钢工件时大约有 %到 32%的热量传入到了工件干式磨
削不锈钢工件时大约有 41%到 63%的热量传入到了工件,湿式磨削
不锈钢工件时大约有 %到 %的热量传入到了工件干式
磨削花岗石时大约有 14%到 21%的热量传入到了工件湿式磨削
花岗石时大约有 %到 9%的热量传入到了工件
关键词: CBN 磨削温度磨损磨削比能热量传递比例
I
ABSTRACT
In this thesis, experimental investigations have been done on
temperature and energy partition and wheel wear in grinding with a
vitrified CBN main results are as follows:
(1) Grinding temperatures were measured and analysed in surface
grinding using thermocouple techniques The experimental results
indicated that low temperature rise obtained in the surface of the
workpiece this was attributed to the very high thermal conductivity of the
CBN abrasive grains
(2) The grinding ratio was to for grinding HSS and the
grinding ratio was to for grinding granite The CBN
abrasive grains were flattened for grinding granite while broken and
pull-out for grinding HSS
(3) Experimental investigations of the specific energy with a vitrified
CBN wheel were conducted It is found that the specific energy for dry
grinding of HSS was J/mm3 to J/mm3, and J/mm3 to
J/mm3 for wet grinding. The specific energy for dry grinding of
stainless steel was J/mm3 to J/mm3, and J