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一、镀锌板缝焊可焊性的探讨 1.镀锌板缝焊特点由于镀锌板表面镀有锌层,因而提高了表面光洁度,增加了表面导电性能。但是在缝焊过程中,工件表面锌被氧化,生成白色氧化锌覆盖在滚盘表面,并在冷却水的作用下,反应生成碱式碳酸锌Zn_2(OH)_2CO_3,经过压力与温度的作用变成耐磨的中间层,这就使得缝焊镀锌板比缝焊普低板困难得多。
First, galvanized seam seam weldability discussion 1. Galvanized sheet seam welding features galvanized steel surface coated with zinc layer, thus improving the surface finish, an increase of surface conductivity. However, in the seam welding process, the surface of the workpiece is oxidized with zinc oxide to form a white zinc oxide coating on the surface of the roller. Under the action of cooling water, the reaction produces Zn (OH) 2CO_3, which undergoes the action of pressure and temperature Into a wear-resistant intermediate layer, which makes the seam welding galvanized sheet is much more difficult than seam plate.