Welding technology of aluminum alloy ceiling used for subway compartment
A welding process and technology of aluminum alloy, applied in the field of aluminum alloy, can solve the problems of high comprehensive cost, affecting the qualified rate of products, affecting assembly, etc., and achieve the effect of improving the qualified rate of products, optimizing welding process parameters, and reducing welding man-hours.
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Embodiment 1
[0033] like Figure 1-5 As shown, the car body roof of the subway in this embodiment is welded by five roof panels A1, A2, A3, A4, and A5 and two roof side beams B1 and B2.
[0034] In this embodiment, the roof of the car body is welded in two stages. First, each roof panel is welded, and then the roof side beam and the roof panel assembly are welded, as follows:
[0035] (1) Roof plate welding:
[0036] 1), material selection: select the above-mentioned roof panel as required, and the roof panel is a hollow profile with a single length of 16-20m, a width of 0.3-0.6mm, and a wall thickness of 2-3mm;
[0037] 2) Formal assembly: set the selected five roof panels side by side on the formal welding tool;
[0038] 3) Form-fitting welding: double-machine and double-wire linkage welding is used to weld the roof panels of the formal-fitting assembly. First, welding seams 2 and 3 are welded at the same time, and then welds 1 and 4 are welded at the same time;
[0039] 4) Reverse as...
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