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用热传导方程控制激光辐照温度,建立了一种新回归方程以控制激光辐照硬化深度,选用卡尔丹公式列热传导方程及同归方程联立求解,可得到同时满足一定的硬化深度及表面最高温度双重要求的工艺参数,此种方法可作为激光硬化处理工艺参数的控制或预报,对本合金铸铁的激光硬化处理,其表面温度的下限应大于其熔点温度,即以表面产生微熔的快速冷凝处理为宜,并以选取低功率慢扫描为最佳。
A new regression equation was set up to control the laser irradiation hardening depth by using the heat conduction equation to control the laser irradiation temperature. The Caldane formula heat conduction equation and the simultaneous regression equation were used to solve the problem. At the same time, a certain hardening depth and surface maximum Temperature dual requirements of the process parameters, this method can be used as a laser hardening process parameters control or forecast laser hardening of the alloy cast iron, the lower limit of the surface temperature should be greater than its melting point temperature, that is, the surface of the micro-melting rapid condensation Processing is appropriate, and to select low-power slow scan for the best.