From the electrochemical point of view, due to the adsorption properties of the anion and the expansion of the electric double layer composed, prompting surface scaly skin off. Sour mix of traditional washing process using hydrofluoric acid and nitric acid, nitric acid is a strong oxidant: Cr2O3 + 6Fe3 ++ 5H2Oy2H2CrO4 + 6Fe2 ++ 6H + Cr2O3 + 3NO- + 2H2Oy2H2CrO4 + 3NO23 nitrate materials inexpensive, easy to purchase, low operating costs, production easy to control, and pickling line at home and abroad is widely used for stainless steel pickling process raw materials, pickling technology is mature and reliable, but in the pickling process will produce nitrate pollution of the environment, nitrite and NOx and other waste, needs After treatment standards before discharge. Cleanox352 pickling process is the German HenkelSurfaceTechnologies companies in recent years the development of new technologies, with sulfuric acid and nitric acid water instead of peroxide, peroxide water is a strong oxidant. The advantage is free of nitrate pollution of the environment does not produce nitrate, nitrite, and hexavalent chromium, no NOx gases soft stainless steel wire, low cost treatment of pollutants, acid pickling speed and quality and the traditional washing process sour mix quite. However, the raw material for the patented formula, you need to HenkelSurfaceTechnologies purchase, so the higher raw material costs, high operating costs, production control demanding. By comparison, Baosteel Special Steel Branch pickling line selection of the traditional sour mix wash process. 1, the overall integral tunnel tunnel pickling line treatment tank were all closed as a whole, unified ventilation and exhaust mist, the tunnel was slightly negative. Overall end of the tunnel Tunnel pickling line production operations and control system is relatively simple, reliable equipment operation, maintenance tunnel structure only when open, in order to facilitate production management. But the enclosed volume is large, so the mist extraction system capacity is relatively large. This arrangement of the unit there are two kinds: (1) operating line for the ring closed form, manipulator and coil handling throughout the pickling line is not decoupled. This form of simple production operations, demanding control of the entire pickling line; but more work online robot (eg annual processing capacity of 100,000 t of pickling line about 16), and therefore relatively large investment in equipment, plant elevation higher (H = 12m). Under the control level is not high, the recommended form of this arrangement. (2) The operating line is a straight line in the form of an open, robotic and coil handling of decoupling. This form of production operations and control more complex than the former steel wire ear, but mechanical work online can significantly reduce the number of hands (eg annual processing capacity of 100,000 t of pickling line about 4), covers and mist extraction drainage system is also reduced, low investment in equipment, plant low elevation (H <12m). Thus, in the case where the control level to meet the requirements of, This arrangement is recommended. Stainless steel wire, stainless steel Shengyuan (certified), stainless steel wire provided by the Dongguan City Shengyuan Stainless. Shengyuan Stainless Steel Co., Ltd. of Dongguan City (dg-shengyuan.cn) is Dongguan, metal packaging machinery leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Shengyuan leader in stainless steel with the staff warmly welcome all inquiries negotiations to create a better future Shengyuan stainless steel.