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本文介绍了用高速摄影方法拍摄的石英砂(黄砂)衬垫焊的电弧物理形态和石英砂进入焊接熔池的情况,确认电弧的熔滴过渡状态基本上为短路和粗滴式过渡;石英砂的熔化参与了焊缝的冶金反应,从而对焊缝的化学成分产生了相应的影响.文章就锰含量大幅度下降、低温冲击值不稳、硅锰含量增值的随机性等问题作了理论上的分析和探讨.
This paper introduces the arc physical form of quartz sand (yellow sand) liner welding photographed by high-speed photography and the situation of quartz sand entering the welding pool. It is confirmed that the arc droplet transition state is basically short circuit and coarse drop transition; quartz sand Of the melting involved in the metallurgical reaction of the weld, which has a corresponding impact on the chemical composition of the weld.This paper on the substantial reduction of manganese content, low temperature impact value instability, the value of silicon-manganese content of the randomness and other issues in theory Analysis and discussion.