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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 .
On the basis of analyzing the mechanism of slow burn-in burn-in, this paper proposed an innovative concept of high-pressure jet-impact-enhanced heat exchange in the grinding arc zone and studied the heat transfer characteristics of jet impact enhanced heat transfer through the basic experimental study of heat transfer. Aiming at the technology of directional heat transfer enhancement of radial jets in the grinding arc zone, the heat transfer effect was studied experimentally by intermittent grinding with slowing in. The experimental results show that the jet impact enhanced heat transfer technology is indeed to improve the arc zone Efficient heat transfer method, and the higher the radial jet velocity in the arc zone, the better the heat exchange effect, and has broad application prospect in solving the grinding burn of the difficult-to-process material.