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本文介绍了风机喷焊叶片与低碳钢前后盘焊接时在焊缝金属中产生的热裂纹问题。研完了叶片基体材料、喷焊粉末组分、焊条类型、坡口形状及焊接参数等对焊缝金属热裂倾向的影响,为正确地选择焊接材料和工艺提供了依据。
This paper introduces the hot crack problem in the weld metal when the fan welding blade and the low carbon steel front and rear plates are welded. The effect of the base material of the blade, the powder composition of the welding powder, the type of electrode, the shape of the groove and the welding parameters on the hot cracking tendency of the weld metal was studied, which provided the basis for the correct selection of the welding material and the process.