Stainless steel bearing pickling treatment in consumption

After hot working such as malleable cast stainless steel bearings, appearance always have a layer of oxide skin, smooth agent or oxide pollution, pollutants such as graphite, molybdenum disulfide and carbon dioxide. For the use of stainless steel bearing performance live again after shot peening disposal, salt bath treatment of and multichannel pickling treatment.     The bearing network introduced stainless steel bearing of the consumer about the process of pickling treatment method: & emsp;   1. After machining of cleaning and pickling passivation & emsp;   Stainless steel bearing usually residue after cutting the appearance at the end of the iron and steel and cooling emulsion such as dirt, can make the stainless steel bearing is stain and rust, and therefore should stop degreasing degreasing, reoccupy nitric acid cleaning, are removed at the end of the iron steel, and stop the passivation.     2. Before and after welding cleaning and pickling passivation & emsp;   Because oil is a source of hydrogen, in the absence of clear grease in the weld would amount to a pressure, and low melting point metal pollution, Such as zinc rich paint) After welding can form craze, so before the stainless steel welding required on both sides of groove and liquidation within 20 mm appearance clean, oil available acetone is swabbed, paint rust should use emery cloth or stainless steel wire brush clean up first, reoccupy acetone rub-up.     Stainless steel equipment manufacturing no matter adopt what kind of welding technology, welding after all to clean, all welding slag, spatter, stain and oxidation were put away, such as color clear measures including mechanical cleaning and chemical cleaning. Mechanical cleaning of grinding, polishing and blasting shot peening, etc. , should be to prevent the use of carbon steel brush, in case of appearance of rust. In order to obtain the best corrosion resistance, it can be soaked in the mixed liquid of HNO3 and HF, or use pickling passivation paste. In practice often 4 californium 1 isolated machinery cleaning and chemical cleaning applications.