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王群, 余洋, 钱志强. 基于响应面法的HR-2抗氢钢电子束插接焊工艺参数优化[J]. 焊接学报, 2023, 44(4): 50-57. DOI: 10.12073/j.hjxb.20220522001
引用本文: 王群, 余洋, 钱志强. 基于响应面法的HR-2抗氢钢电子束插接焊工艺参数优化[J]. 焊接学报, 2023, 44(4): 50-57. DOI: 10.12073/j.hjxb.20220522001
WANG Qun, YU Yang, QIAN Zhiqiang. Optimization of process parameters for electron beam butt welding of HR-2 hydrogen resistant steel based on response surface method[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2023, 44(4): 50-57. DOI: 10.12073/j.hjxb.20220522001
Citation: WANG Qun, YU Yang, QIAN Zhiqiang. Optimization of process parameters for electron beam butt welding of HR-2 hydrogen resistant steel based on response surface method[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2023, 44(4): 50-57. DOI: 10.12073/j.hjxb.20220522001

基于响应面法的HR-2抗氢钢电子束插接焊工艺参数优化

Optimization of process parameters for electron beam butt welding of HR-2 hydrogen resistant steel based on response surface method

  • 摘要: 为解决HR-2抗氢钢电子束插接焊有效熔深不足、焊缝处开裂等问题,采用BBD设计试验方案,基于响应面法建立了HR-2抗氢钢电子束插接焊焊接工艺参数(聚焦电流、焊接速度、束流、倾斜角度)与预测响应值(有效熔深、接头抗剪承载力)之间的统计模型. 根据有效熔深和接头抗剪承载力的要求优化焊接工艺参数,并通过优化电子束焊接工艺参数来预测电子束插接焊的有效熔深和接头抗剪承载力,实现焊缝截面形貌与接头强度的最佳组合. 结果表明,模型拟合度较好,有效熔深预测值比实测值高1.17%,接头抗剪承载力预测值比实测值高2.63%,得到较优的焊接参数为:聚焦电流2.46 A,焊接速度10.00 mm/s,束流8.20 mA,倾斜角度11°. 在该参数下的焊缝有效熔深1 347.82 μm,接头抗剪承载力13.525 kN.

     

    Abstract: In order to solve the problems such as insufficient effective penetration and cracking at the weld seam of HR-2 hydrogen resistant steel, a statistical model between the welding process parameters (focusing current, welding speed, beam current, tilt angle) and the predicted response values (effective penetration, joint shear load) of HR-2 hydrogen resistant steel electron beam insertion welding was established based on the response surface method using the BBD design test scheme. It can optimize the welding process parameters according to the requirements of effective penetration and joint shear load, and predict the effective penetration and joint shear load of electron beam plug welding by optimizing the electron beam welding process parameters, so as to achieve the best combination for weld section morphology and joint strength. The results show that the model fits well, the predicted value of effective penetration is 1.17% higher than that of the measured value, and the predicted value of joint shear load is 2.63% higher than the measured value. Better welding parameters are listed as follows: the focusing current is 2.46 A, the welding speed is 10.00 mm/s, the beam current is 8.20 mA, and the tilt angle is 11°. Effective penetration depth of the weld under this parameter is 1 347.82 μm, and shear load of joint is 13.525 kN.

     

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