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Home > welding cable > The filler welding and the cover surface welding
The filler welding and the cover surface welding
2012-10-15 by xiugai
Fill layer welding, a bottom weld slag, spatter, etc. should first clean up a bottom weld joints grinding smooth after welding. The welding method of the filling layer connected Arc.
The filling of the first layer, the method of the transported article positive sawtooth. Appropriate to increase the current, shipped Article faster, the arc is kept as low as possible, both sides of the weld stopover. The electrodes and the welding direction was 90 ° ~ 105 °, and on both sides remain vertical. The second layer of padding welding, in the beginning of welding end after ignition of the arc, the electrode in place horizontal swing, after the formation of the molten pool, the welding rod press are jagged or anti crescent move evenly along the welding direction, shipped Article welding Road middle shorter residence time, longer residence time on both sides of the weld, the molten iron to both sides of the groove surface with as far as possible, to keep the molten pool round flat. Ultimately the intermediate concave on both sides of the flat packed layer effect, to create the conditions for cover surface layer.
Fill layer joints, welding rod before closing arc weld pool 15mm at scratch ignited arc, then depress arc, move to the pool edge, swing around, normally After the good fusion welding. Welding the second layer of the filling layer must not damage the edge of the groove, fill layer to the formation of welds, and about 1mm lower than the base metal before Welding Cable of the cover surface.
Cover the surface layer welding
The former should cover the surface layer welding layer of slag splashing clean electrode angle, shipped strip method and joints filled layer. Welding electrode lateral oscillation amplitude is wider than the fill layer welding, Welding Wires should pay attention to, the electrode should be uniform swing amplitude in the groove on both sides of the arc, the weight as low as possible, but the the electrode end drug leather sleeve untouchable base metal Otherwise, easy to produce undercut. Outside groove edges melted size control in about 1mm Note both sides fusion, in order to ensure not bite straight edge weld, forming beautiful.
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