Aluminum Lathe Faceplate Reducing Flange

fay@pride-cnc.com
Block D, Dianlian Science Park, Matian St., Guangming District, Shenzhen 518106, China

+8613477665385

 13477665385

Welding Process

1. Selection of welding materials.

In principle, the wire selects aluminum and aluminum alloy wire or slabs with the same components as the master material. Argon purity of 99.95%, try to use large diameter wire. In arc welding of Al-Mg aluminum alloys, CB-AMr2, CB-AMr3, CB-AMr6, CB-AMr61, CB-AMr63, 1557, 1577 welding rods are generally recommended, and 01201 and 01217 are recommended for Al-Cu aluminum alloys.

2. Group pairs and spot solid welding.

Because aluminum and aluminum alloy pipes conduct heat fast, melting pool crystallization fast, so. Group pairs do not leave gaps, blunt edges, should avoid forced, in order to reduce welding to produce a larger residual stress, positioning weld length of 10-15mm is easy. The positioning welding position is at 7, 9 and 12 points of the tube. Positioning welds are often reserved as formal welds, so problems should be found to be dealt with in a timely manner. Before welding, remove the black powder and oxidation film from the positioning welding surface and fix the ends into a gentle slope type. Welding parts do not need to be warmed up. Test welding on the test plate before welding, when the air hole is confirmed before formal welding. Using high-frequency arcing, the starting point should cross the center line about 20mm, and stay still for about 2-3 seconds. Then in the case of ensuring welding through, the use of high current, fast welding. The wire does not swing and the end of the wire should not leave the argon reserve. Such as leaving the argon reserve. The end of the wire should be cut off. The angle between the weld wire and the weld surface should be at 15O right. The angle between the weld gun and the weld surface should be maintained between 80O and 90O. In order to increase the argon protection area and enhance the protection effect, a large diameter welding gun porcelain nozzle can be used to increase the flow of argon of the welding gun. When there is a splash on the nozzle that clearly impedes the flow of argon air. The splash must be removed or the nozzle replaced. When the extreme part of tungsten appears pollution, irregular shape and other phenomena. Must be trim or replaced. Tungsten is highly suitable for extending out of the nozzle. The control of welding temperature is mainly the control of welding speed and welding current size. The test results show that high current and fast welding can effectively prevent the production of pores. This is mainly due to the welding process at a faster speed through the weld, molten metal heating time is short, less chance of absorbing gas. When closing the arc, pay attention to fill the arc pit, shrink the pool, avoid the production of shrink holes, the end point of the combination should be welded over 20 to 30mm. After stopping the arc, delay the degassing for 6 seconds. Rotating aluminum and aluminum alloy pipes when butted to flat welding. The torch should be in a slightly sloped welding position. This facilitates welding through. When the bottom layer of a thick-walled pipe is welded. Welding wire may not be filled. However, the future welding layer needs to be welded wire.

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