1. If there are sundries on the surface of stainless steel pipe, especially when there is dust adhesion, heating will certainly affect the oxide scale.
2. If there is lubricating oil attached to the workpiece surface during cold working, fully degrease it in trichloroethylene degreaser and caustic soda solution, and then clean it with warm water before heat treatment.
3. The difference of atmosphere in stainless steel tube furnace The difference of atmosphere in furnace in each part will also change the formation of oxide scale, which is also the reason for uneven pickling. Therefore, the atmosphere in each part of the furnace is the same during heating.
4. Objects in direct contact with the heated workpiece can be used only after being fully dried. However, if it is placed at room temperature after drying, the moisture will still condense on the workpiece surface under high humidity. Therefore, it should be dried before use.
