论文部分内容阅读
为了预测并控制激光拼焊板的力学性能,通过对0.8~1.5 mm的St12板及其镀锌板拼焊板接头组织的定量分析,结合其组织性能变化规律,得出影响力学性能的首要因素为马氏体含量,继而可得工艺优化控制方法。在此基础上建立了以焊接工艺及板厚为输入变量的偏最小二乘回归拼焊板力学性能预测模型。实例验证发现,所建预测模型对拼焊板抗拉强度及延伸率的预测精度均达91%以上,充分表明该模型与试验结果吻合良好,验证了该预测模型的合理性及适用性。
In order to predict and control the mechanical properties of the tailor welded blank, the quantitative analysis of the welded joints between the welded strip and the welded strip of 0.8-1.5 mm was carried out. For the martensite content, then available process optimization control method. Based on this, a prediction model of mechanical properties of partial least squares regression welding with welding process and plate thickness as input variables was established. The experimental results show that the prediction accuracy of the proposed model is above 91%, which shows that the model is in good agreement with the experimental results, which proves the rationality and applicability of the model.