A kind of preparation method of composite electrolytic plate

Abstract

The invention discloses a manufacturing method for a composite electrolytic plate and belongs to the technical field of manufacturing of electrolytic plates. According to the manufacturing method, a cold rolled steel sheet is soaked with an acetone solution and then is wiped and dried, then the cold rolled steel sheet is soaked in a mixed solution prepared through sodium pyrophosphate, sodium chloride and water, then the cold rolled steel sheet is taken out to be subjected to surface treatment, the surface is washed to be neutral, then the cold rolled steel sheet is put into an impregnating solution prepared through salicylylsalicylic acid, ammonium bifluoride and the like to be soaked, a composite electrolytic plate base material is prepared, zinc chloride, nickel chloride, graphite and the like are subjected to stirring, pH adjustment and oscillating treatment, the obtained electroplating liquid is put into an electroplating bath, the composite electrolytic plate base material is put into the electroplating bath to be subjected to electroplating treatment and then dried, and the composite electrolytic plate is obtained. The manufactured composite electrolytic plate is high in hardness, excellent in stamping machining performance, capable of meeting the requirements of various complex deep-punching deformation and assembly, high in clad layer adhesive force and excellent in corrosion resistance and has the wide application market.

Description

technical field [0001] The invention discloses a method for preparing a composite electrolytic plate, which belongs to the technical field of electrolytic plate preparation. Background technique [0002] Electrolytic plate, also known as electro-galvanized plate, is the process of forming a uniform, dense and well-bonded metal or alloy deposition layer on the surface of the workpiece by electrolysis. [0003] Compared with other metals, zinc is a relatively cheap and easy-to-coat metal, which is a low-value anti-corrosion electroplating layer. It is widely used to protect steel parts, especially against atmospheric corrosion, and for decoration. Plating techniques include tank plating (or rack plating), barrel plating (suitable for small parts), automatic plating and continuous plating (suitable for wire and strip). [0004] The electrolytic plate is rolled by the cold tandem rolling unit and then annealed by the CAPL unit, and then enters the electro-galvanizing unit. Aft...

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Problems solved by technology

[0008] The technical problem mainly solved by the present invention: Aiming at the problems of poor coating adhesion, poor corrosion resistance and stamping processing performance, and insufficient hardness of the electrolytic plate in the electrolytic plate prepared by the prior art, a method for preparing a composite electrolytic plate is provided. Method Soak the cold-rolled steel sheet in acetone solution and dry it, then soak it in a mixture of sodium pyrophosphate, sodium chloride and water for heat treatment, then take out the surface-treated cold-rolled steel sheet, wash the surface with distilled water to neutral After that, soak in the impregnating solution made of salicylate, ammonium bifluoride, etc. to obtain a composite electrolytic plate substrate, and then stir, adjust pH, and oscillate zinc chloride, nickel chloride, and graphite. The obtained electroplating solution is put into the electroplating tank, the composite electrolytic plate substrate is put into the electroplating tank for electroplating treatment, and then dried to obtain the composite electrolytic plate. The composite electrolytic plate prepared by the present invention has high hardness and excellent Stamping processing performance solves the technical problem of difficult assembly after punching the electrolytic plate, and meets the requirements of various complex deep drawing deformation and assembly. The prepared electrolytic plate coating has strong adhesion and excellent corrosion resistance, and has a broad application market