不合格试件;
The tensile strength of the joint of pulse submerged arc welding is 50 MPa higher than that of ordinary submerged arc welding, which is about 12% higher. Under the same heat input, there is failed test piece in the ordinary submerged arc welding.
脉冲埋弧焊比普通埋弧焊在抗拉强度上增50MPa,大约12%左右,普通埋弧焊在与脉冲埋弧焊同样的热输入条件下出现了不合格试件。
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