电火花表面热处理实验研究

An Experimental Study on Electrical Spark Surface Treatment

电火花表面热处理即受控电火花放电，使金属表面在一定的温度梯度范围内是相变物理效应．它既不同于采用直流电空气中的电火花表面强化，又不是在介质中的电火花加工．本文对电火花放电的热传导方程与被生产，上采用的激光表面强化处理的热传导方程进行比较，且从强化效果、工件表层的金相组织与表层显微硬度的比较中得出；电火花表面热处理与激光表面热处理的效果相近，加之电火花加工设备比激光设备便宜得多，所以它很可能成为一种经济可行的新型表面热处理方法．

A new metal surface treatment-electrcal spark surface treatment is illustrated. Comparing with laser surface treatment, this method has similar thermal condueting equation, metallographic structure,microhardness distribution and so on. So that,this method may be an economical and available method on surface treatment than that of the laser surface treatment.