Plating pretreatment technology optimization method

Abstract

The invention discloses a method for optimizing a pretreatment process of electroplating. The specific steps of the method are as follows: 1), polishing, polishing, rolling, brushing and sandblasting the workpiece to be electroplated; 1) The workpiece with a smooth surface treatment is hung on the cathode of the alkaline electrolyte, and the electrochemical polarization and the gas precipitation on the electrode surface are used to destroy the oil film for degreasing; 3) For the first degreasing in step 2) The workpiece is subjected to physical ultrasonic-assisted degreasing treatment; 4), the workpiece treated in step 3) is hung on the anode of the alkaline electrolyte for electrolytic degreasing again; 5), the workpiece treated in step 4) is placed in into the acidic solution for acid activation treatment, the purpose of which is to improve the surface activity of the parts; 6), the workpiece processed in step 5) is galvanized, the standard electrode potential of galvanizing is -0.76V, and the zinc coating belongs to Anodic coating, which is mainly used to prevent corrosion of steel.

Description

technical field [0001] The invention relates to the technical field of treatment technology of electroplating products, in particular to a method for optimizing a pretreatment process of electroplating. Background technique [0002] Electroplating refers to a surface processing method in which the cations of the pre-plated metal in the plating solution are deposited on the surface of the base metal by electrolysis with the base metal to be plated as the cathode in a salt solution containing pre-plated metal to form a coating. . The performance of the coating is different from that of the base metal and has new characteristics. According to the function of the coating, it is divided into protective coating, decorative coating and other functional coatings. [0003] Electroplating is an electrochemical process and a redox process. The basic process of electroplating is to immerse the parts in the solution of metal salt as the cathode, and the metal plate as the anode. plati...

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Problems solved by technology

[0012] The object of the present invention is to provide a kind of electroplating pretreatment process optimization method, to solve the traditional pretreatment process production efficiency that proposes in the above-mentioned background technology is low, and operating cost is high, and the high-temperature coal consumption is large, and the strong alkali and strong acid waste water that produces is many, Issues that have a certain impact on the environment