Preheating shall be carried out for carbon and low alloy steel welding where required. Preheating temperature shall be kept uniform from the start to the end of welding.
在进行碳钢及低合金钢的焊接时应进行预热。预热温度在焊接开始到结束期间应保持均衡。
The research indicates that this method can control the welding time of a weld and that the stable and uniform weld formation is acquired.
研究结果表明：该方法能够实现对焊点焊接时间的实时控制，获得均匀稳定的焊缝成形。
The International uniform welder and welding practitioner (IWP) training guideline, examination standards provide the new model for training of welding practical personnel in China.
国际统一的焊工、焊接技士培训规程和焊工考试标准，为我国焊接技能型人才的培养提供了新的思路和培养模式。
The composition of the welded joint obtained by the two welding methods are all uniform, the hardness is higher than the matrix metal, the comprehensive property is good.
两种焊接方法所得焊接接头成分均匀，硬度值均超过母材，综合性能良好。
Abstract: the International uniform welder and welding practitioner (IWP) training guideline, examination standards provide the new model for training of welding practical personnel in China.
摘要：国际统一的焊工、焊接技士培训规程和焊工考试标准，为我国焊接技能型人才的培养提供了新的思路和培养模式。
The highly non-uniform welding temperature file caused large residual stress and deformation in the welding plate.
高度不均匀的焊接温度场，导致构件中产生较大的残余应力与变形。
The highly non-uniform welding temperature file caused large residual stress and deformation in the welding plate.
高度不均匀的焊接温度场，导致构件中产生较大的残余应力与变形。
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