Based on calorimetric method, a method to measure the thermal power of chips when cutting nickel- based superalloy at high speed was introduced and the cutting power and the cutting heat in the chips was calculated by measuring cutting force. The effect of cutting parameters on chip power and cutting power, and the distribution of cutting heat were studied too. The simulation results of the cutting heat by Deform-2D agree well with the experimental results. The experimental and calculation results indicate that as cutting speed increases, the chip power and cutting power increase almost linearly; the ratio of cutting heat taken away by chips increases with the increase of cutting speed, but it is much smaller than the ratio in carbon steel cutting; the feed per tooth has a relatively small influence on the distribution of cutting heat.%介绍了基于量热法测量高速铣削镍基高温合金试验中切屑的热功率方法；通过测量切削力，研究了切削参数对切屑功率、切削功率以及切削热分配的影响．试验结果表明，切削功率和切屑功率都随着切削速度的增加而大幅增加；切屑所带走的热量比随切削速度的增加而增加，但比碳钢高速切削时小得多；每齿进给量对切削热分配的影响比较小．采用有限元软件Deform-2D提供的切削模块仿真了切削过程，并对切削热进行了仿真计算．仿真结果与试验得到的热量的变化趋势基本一致．
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