18-12-2013 дата публикации
Номер: CN103447679A
Принадлежит:
The invention provides a 3mm-thick steel plate welding method of a lap welder. The welding process parameters of a DX51D type steel plate are that the welding speed is controlled according to 38-41% of the design, the welding current is controlled according to 47-49% of the design, the welding pressure is controlled according to 80-95% of the design; the rolling pressure is controlled according to 50-60% of the normal rolling pressure, the amount of overlap is 1.0-2.0mm, the extension elongation is 20-28mm, the compensation dosage is 0.9-1.1mm. By using the welding method, the aim that the DX51D type steel plate with 3mm thickness specification can be stably produced by using a galvanization production line is achieved, the welding quality of the produced steel plate is excellent, the cup drawing inspection is entirely qualified, the operation of a unit is stable, the unit halt and belt-break accidents caused by producing the steel plate of the type and specification are eliminated, and ...
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