The instructions of gas shielded welding wire
The instructions of gas shielded welding wire
We know the gas shielded welding wire is widely used nowadays, and there is the influence of gas shielded welding wire.
Drop a tiny particle and rapid injection status through space to the molten pool arc transition form is called spray transfer, and the spray transfer can be divided into drops of crossing and spray transfer in two forms. Shoot drops transition: under certain conditions, the formation of droplet size and wire diameter, gas shielded welding wire metal in the form of a clear separation of molten drops and high speed axial toward the droplet transition form along the wire called dripping transition.
There are a lot of the kinds of china welding wire, the most important is the quality problem of the welding wire, welding wire as the filter metal to send into molten pool. It should be paid attention to during the process of wire feeding.
1. Gas shielded welding wire can’t out of gas reserves, so as avoid hot wire end by oxidation, and reduce the weld quality.
2. Continuous wire feeding, the request should be uniform, wire feeding speed straight, not in the protective layer agitation, in case of air into the weld zone.
3. When the wire to the unfavorable with his left hand holding onto the distal of the wire, only by the left arm to move into.
4. The fill welding wire, welding wire end contact with tungsten electrode forbidden, otherwise the wire will be pollution of tungsten electrode, tungsten is formed after melting into the molten pool.
The diameter is far smaller than the wire diameter of melting drop transition, the frequency is very high, looks like at the ends of wire id flow of the molting pool of flow.
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