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在考虑高速热模锻凹模的材料性能和工况条件基础上 ,由Coffin Mansion公式导出了热疲劳裂纹萌生期预测公式 ,并采用这一公式对高速热模锻凹模进行了热疲劳裂纹萌生期的预测。通过试验发现预测结果与试验结果基本吻合。
Based on the material properties and working conditions of the high speed hot forging die, the prediction formula of the thermal fatigue crack initiation period is derived from the Coffin Mansion formula, and the thermal fatigue crack initiation Prediction of period. The test results show that the predicted results are in good agreement with the test results.