1. Precision seamless steel pipe pickling process
Precision seamless steel pipe pickling method mainly includes impregnated acid washing method, spray acid washing method and acid paste rust removal method.Generally, we use the impregnated acid washing method, and the spray method can be used in mass production.Steel parts are generally pickling in 10% ~ 20% (volume) sulfuric acid solution at a temperature of 40 C.When the solution of iron content exceeds 80g / L and ferrous sulfate exceeds 215g / L, the acid lotion should be replaced.At room temperature, with 20% ~ 80% (volume) of hydrochloric acid solution for steel pickling, not easy to occur corrosion and hydrogen brittle phenomenon.Due to the great corrosive effect of acid on metal, corrosion inhibitor is added.After cleaning, the metal surface becomes silver white, and passivate the surface to improve the corrosion resistance of stainless steel.
In order to eliminate the surface adsorption and reduce the chromatographic peak drag tail, the carrier should be treated with acid wash or alkali wash before use.Apickling is to soak the carrier with 6 mol/L hydrochloric acid for 2h or concentrated hydrochloric acid for 30min, filtered, washed to neutral, and dried.Acid washing can remove iron, aluminum, calcium, magnesium and other impurities on the table, but can not remove the silicone alcohol group.The pickling carrier is suitable for analyzing acidic samples.
2.The effect of precise seamless steel pipe pickling
Remove oil and rust of precision seamless steel pipe to prepare for next process.In the production process, the pickling process is to remove the surface oxidation skin, after lubrication treatment (carbon steel-phosphorus saponification, stainless steel-butter lime, copper aluminum pipe-oil), with the old process-copper plating), and then extraction and deep processing.If the steel pipe is not pickling, there may be oxide and oil on the surface. Pollution, phosphoride liquid nuclear energy can not remove them, phosphorization quality will be reduced.
Shandong Jute Steel Pipe Co.,Ltd.
Contacts: Mr. Ji
WhatsApp: +86 18865211873
WeChat: +86 18865211873
E-mail: jutesteelpipe@gmail.com
E-mail: juteguanye@aliyun.com
Post time: Mar-17-2022
