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。
In addition, to weaken the effect of double quenching on the microstructure and properties of ASTM4130 steel, multi-pass welding and temper bead should be adopted.
采用焊接热模拟技术和显微分析方法，研究了回火焊道热处理对X80级管线钢焊接热影响区韧性的影响规律。
The effects of tempering weld-pass treatment on toughness of HAZ of X80 pipeline steel were studied by the technique of welding thermal simulation and the method of microscope analysis.
采用焊接热模拟技术和显微分析方法，研究了回火焊道热处理对X80级管线钢焊接热影响区韧性的影响规律。
The influence of pre-heating temperature on organization and performance of X80 pipeline steel was investigated by weld thermal simulation technique and the instrumented Charpy impact toughness test.
如果这个回火焊逢工艺被用作控制热影响区的最大硬度，那么，在回火焊缝工艺中焊缝的排列顺序的任何改变，都将符合新的标准。
If a temper bead technique is used to control the maximum hardness of the HAZ then any change in the bead sequence or placement of the temper bead shall require a new qualification.
如果这个回火焊逢工艺被用作控制热影响区的最大硬度，那么，在回火焊缝工艺中焊缝的排列顺序的任何改变，都将符合新的标准。
If a temper bead technique is used to control the maximum hardness of the HAZ then any change in the bead sequence or placement of the temper bead shall require a new qualification.
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