1. Metal surface treatment the complete cleaning of the surface of stainless steel sheet in the tightly connected area is vital for successful welding. Can use organic solvents to remove oil and vegetable oils and use stainless steel plate brush or sandpaper is grinding to remove other ways of environmental pollution, leaving a bright surface. The mild surface roughness of the wear-resistant material is acceptable and can improve the adhesion of the welding material. The actual operation of welding shall be carried out immediately after the selection and cleaning. If this is not possible, the members can be maintained by electroplating them with welding materials.
2, flux must be applied to help the solution from the surface of the stainless steel plate to remove metal oxides, according to the ammonium sulfate solution is also very suitable, if the entire process of tight connection after all the residual has no harm.However, it must be noted that some flux based on ammonium sulfate contains sulfuric acid, in the welding of stainless steel plates containing molybdenum, should prevent the use of sulfuric acid to help the welding fluid, after welding causes poor cleaning connector. Although rosin-type welding fluids are of little practical use, they can be used when the surface of the stainless steel sheet must be precoated. The ability to completely remove potentially corrosive flux prior to the manufacture of the connector is very effective if the stainless steel plate component includes dents or blind spots.
3. All traditional heating methods can be used to weld stainless steel plates. Only the heat transfer property of low alloy steel plates is relatively weak. Their thermal expansion coefficient is high, so it is necessary to ensure that all the tightly connected areas are more than the welding temperature symmetrically and not easy to overheat. Otherwise, deformation will occur at the joints.