采用堆焊焊条CHR322，在A 3钢基体上以不同的焊接工艺进行手工电弧堆焊试验。
Surfacing process is conducted on the substrate of steel A3 by shielded metal arc welding process using electrode CHR322 under different welding current conditions.
借助手工电弧焊方法，使用CHR系列堆焊焊条对A 3、45钢进行堆焊加工，分析了其堆焊层金属的显微组织及性能。
With SMAW method, the surfaces of A3 and 45 steel were welded by using the series of CHR electrode, and the microstructure and performance of surfacing welding layer metal were analyzed.
借助手工电弧焊方法，使用CHR系列堆焊焊条对A 3、45钢进行堆焊加工，分析了其堆焊层金属的显微组织及性能。
With SMAW method, the surfaces of A3 and 45 steel were welded by using the series of CHR electrode, and the microstructure and performance of surfacing welding layer metal were analyzed.
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