预防铁皮通风管道焊接时出现气孔的方案 - 山东通风管道加工厂家

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预防铁皮通风管道焊接时出现气孔的方案

发布时间:2017/05/15

铁皮通风管道焊接时气孔的发生缘由及解决方法。
Causes and solutions of Blowhole in welding of sheet iron ventilation pipe.
1.第1代RMD焊接设备没有提早送气功用,在引弧时气体没有及时维护。
1., the first generation of RMD welding equipment did not send early Qigong, in the arc of the gas is not timely maintenance.
2.焊丝伸出长过长,维护气体的维护作用欠好;
2., the welding wire extends out too long, the maintenance function of the maintenance gas is not good;
3.维护气罩挑选不妥,致使维护气体对熔池的维护作用不良;
3., the maintenance of gas cover selection inappropriate, resulting in the maintenance of gas pool maintenance role is not good;
解决方法:
Resolvent:
1.焊接引弧时焊丝不宜伸出维护罩,要与气维护罩端口相等,使维护气体与焊丝同步进行。
1. when welding arc, the welding wire should not extend out of the maintenance cover, equal to the port of the gas shield, and make the maintenance Gas synchronize with the welding wire.
2.焊丝伸出长要控制在焊丝直径的1015倍;
2. the length of the welding wire should be controlled by 1015 times of the diameter of the wire;
3.依据焊接收件的壁厚和坡口上开口宽度挑选维护气罩的直径;
3. select the diameter of the hood according to the wall thickness of the weld and the width of the opening on the groove;
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