Preparation before welding of stainless steel plates.

303 stainless steel sheet plate is a composite steel plate with excellent rust resistance. When welding, there are many processes to be prepared, including materials, tools, technology and so on.

1. Before welding to wuxi stainless steel plate on both sides of groove and cleaned up, at the same time to ensure that the surface of the stainless steel plate above does not have dirt, also cannot have the goods such as iron filings, if the surface is not clean, to timely cleaning.
2. When welding, the materials selected should be selected for the metal content of alloy which cannot be lower than that of the selected composite layer. When selecting the welding rod, choose the appropriate model so that it can be added to the dilution of the complex layer when welding.

3. Before welding, the first to carry on the blanking, 309 stainless steel sheet plate in time to ensure that the cutting at the time of its groove processing, USES a mechanical processing, so that after cutting groove on the cut surface is smooth. In addition, you can also use the guillotine cutting or plasma cutting way, need to be aware of is that when cutting steel cladding is up, and, to prevent slag fall above the cladding.

1. Check the groove before cutting. To ensure that the groove meets the size and specification of the drawing, select the groove that is easy to operate when selecting the groove, which can reduce the filling technology after welding. In the process of processing the groove, we should choose the mechanical method. If other methods are chosen, the oxide layer above the steel plate should be removed first. In groove processing is completed, will be inspection on the surface, qualified cutting groove above no delamination or cracking, or it belongs to the unqualified products, need to carry on the processing or repair.
2. When choosing welding parts, there are certain requirements, especially in terms of thickness, which should be chosen according to the thickness of the complex layer. In addition, it is generally necessary to choose the same material as the steel plate surface for welding. The most important thing is that when the stainless steel plate in xi 'an is resoldered, the side accessories shall be welded according to the requirements of the drawing, so as to ensure the accuracy.

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