Zanglamaydigan po'lat quvurlar hali ham uzoq vaqt davomida qo'llaniladi. Ko'p vaqt o'tgach, ularning barchasini tekshirish kerak. Bu juda muhim qadam. Zanglamaydigan po'lat quvurlarning sifati va xavfsizligini ta'minlash uchun sinovdan o'tkazishda quvur sifatini ta'minlash kerak. Keling, zanglamaydigan po'lat quvurlarning sirt sifatini tekshirish usulini qisqacha tushunaylik.
1. If there is debris on the surface of the stainless steel pipe, especially when dust adheres, heating will certainly affect the oxide scale.
2. If there is lubricating oil attached to the surface of the workpiece during cold working, it should be fully degreased in trichloroethylene degreaser and caustic soda solution and then cleaned with warm water and then heat treated.
3. The difference of atmosphere in the stainless steel tube furnace The atmosphere in the furnace is different in various parts, and the formation of oxide scale will also change, which is also the cause of unevenness after pickling. Therefore, the atmosphere in each part of the furnace is the same when heating.
4. Objects that are in direct contact with the heated workpiece must be fully dried before they can be used. However, if placed at room temperature after drying, moisture will still condense on the surface of the workpiece under high humidity. So it must be dried before use.