In addition, to weaken the effect of double quenching on the microstructure and properties of ASTM4130 steel, multi-pass welding and temperbead should be adopted.
另外为消除二次淬火对ASTM 4130钢组织和性能的影响，应采用多层多道焊，并添加回火焊道。
2
If a temperbead technique is used to control the maximum hardness of the HAZ then any change in the bead sequence or placement of the temperbead shall require a new qualification.