摘要
在分析缓进给磨削时烧伤机理的基础上 ,提出了高压射流冲击强化磨削弧区换热的创新构想 ,并通过传热学基础实验研究了射流冲击强化换热的传热特征 .研制了能实现磨削弧区径向射流定向冲击强化换热的工艺装置 ,并通过缓进给断续磨削实验研究其换热效果 .实验结果表明 ,射流冲击强化换热技术确是提高弧区换热效率的有效方法 ,且弧区径向射流速度越高 ,换热效果越好 ,在解决难加工材料磨削烧伤方面具有广阔的应用前景 .
A creative conception was proposed to enhance heattransfer of grinding contactzone through jet impinging on the basisof analysis on the mechanism of burn during creep feed grinding,and an experimen- tal study was made on the characteristics of augmentation of heattransferwith jetimpinging.A new appa- ratus of augmentation of heattransferwith the radial jetdirectional impinging on the contractzone was de- veloped and its effectof heattransfer was studied through the experimentof intermitted creep feed grind- ing.The experimental resultsshow thatthe technology of enhancing heattransferthrough jetimpinging is a valid method of raising efficiency of heattransferof grinding contactzone.And the more higher the radi- al jetvelocity,the betterthe effectof heattransfer.Itcan be widely applied to solve the problem of grind- ing burn of difficult- to- machining materials.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2000年第10期1320-1324,共5页
Journal of Shanghai Jiaotong University
基金
国家自然科学基金资助项目! ( 596750575970 50 14)
关键词
磨削烧伤
缓进给磨削
强化换热
磨削温度
grinding burn
intermittent creep feed grinding
enhancing heat transfer
jet impinging
grinding temperature
