磨削弧区采用径向射流冲击强化换热的试验研究

Experiment Research on Enhancing Heat Transfer of Grinding Contact Zone by Radial Jet Impinging

在分析缓进给磨削烧伤机理的基础上，提出了高压射流冲击强化磨削弧区换热的创新构想，研制了带径向射流的ＣＢＮ 开槽砂轮试验装置，并通过缓进给断续磨削时采用径向射流冲击弧区的磨削试验研究其换热效果。结果表明，射流冲击强化换热技术可有效提高弧区换热效率，在解决难加工材料磨削烧伤方面具有广阔的应用前景。

On the basis of analyzing the mechanism of burn during creep feed grinding, a creative conception is proposed to enhance the heat transfer of grinding contact zone by jet impinging, and a new apparatus of slotted & perforated electroplated CBN grinding wheel with radial jet is developed. The effect of heat transfer of which is studied through the experiment of intermitted creep feed grinding. Experimental results show that the technology of enhancing heat transfer by jet impinging is a valid method of raising the efficiency of heat transfer of grinding contact zone and it will be widely applied to solve the problem of grinding burn of difficult to machining materials.