With the result the coating projects beyond the molten end of the electrode metal. 結果藥皮伸延于焊條金屬芯熔端之外。
By adding magnesium powder into the coating of electrode,the sulphurs removal in deposited metal was satisfactory. 通過(guò)理論分析及實(shí)驗，探討了手工電弧焊焊條藥皮中添加金屬鎂粉的脫硫效果。
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