When we use stainless steel pipe fittings, in many cases, special process installations are required, such as partial welding. According to different needs, the connection method may be different, so as to be more conducive to the use of stainless steel pipe fittings. Learn about common connection methods for stainless steel pipe fittings.
1. The arc starting of stainless steel pipe fittings adopts the re-welding method, and the arc closing adopts the method of full arc crater. The overweight of the arc starting should be completed in the slope, not on the surface of the pipe and the pipe fitting busbar. Cracks, pores and other phenomena are found in the process of arc starting, and they must be cleaned up in time.
2. Stainless steel pipe fittings should be separated from other metals when they are hoisted to avoid direct contact. Can be used to padded wood, rubber and other non-metallic materials isolation method.
3. The temperature of stainless steel pipe fittings cannot exceed 60 degrees Celsius during continuous welding. When tack welding, the inside of the weld should be filled with argon for protection. When cutting, you can't use ordinary grinding wheel to cut, you should use special grinding wheel for stainless steel pipe or plasma cutting.
4. When connecting stainless steel pipe fittings and non-stainless steel pipes and fittings, the inner and cavity of the welded butt joints should be filled with argon before the bottom welding, and then argon tungsten arc welding can be performed. The welding seam at the connecting welding port should be pickled and passivated after welding.
