A processing technology of electromagnetic shielding material

Abstract

The invention discloses a processing technology of an electromagnetic shielding material. The processing technology comprises the steps that a low-carbon steel material with the iron content larger than or equal to 95% is selected for stretching and annealing to form a steel wire with the specification of 1.2 mm; alkali electrolysis, acid electrolysis and activation procedures are performed in sequence; copper preplating is performed, wherein the alkali copper plating procedure is adopted; copper plating is performed, wherein the copper sulfate plating procedure is adopted; anti-oxidation treatment is adopted, wherein an antioxidant is adopted for oxidation resistance; repeated drawing and annealing procedures are adopted; and after the anti-oxidation treatment is performed, winding and packaging are performed to obtain a finished product. Surface treatment alkali electrolysis is adopted for removing oil stains on the surface of the steel material, acid electrolysis is adopted for removing impurities, rust stains and the like on the surface of the steel material, finally, activation is performed, and the concentration of the surface of the steel material is adjusted to be neutral. The electroplating technology is adopted so that copper ions can be tightly combined with the surface of the steel material, the binding force is better than that formed when a copper sheet directly wraps the steel material, and the higher stretching rate is achieved; the repeated wire stretching and annealing technology is selected, the products are stretched to be 0.5 mm in diameter to achieve wire fibrosis, the electric conductivity of copper-clad steel is controlled, the stable shielding attenuation characteristics are ensured, and the anti-interference performance is high.

Description

Technical field: [0001] The invention relates to electromagnetic shielding materials, in particular to a processing technology of electromagnetic shielding materials. Background technique: [0002] Oxygen-free copper wire is the main shielding material in China, but the electromagnetic compatibility of oxygen-free copper wire is not as good as copper-clad steel material, so its anti-interference performance is poor. Due to the limitations of material performance and production process, the copper-clad steel used for shielding wires in China is generally larger than 0.10mm, which cannot achieve the elongation and softness required for ultra-fine specifications and wire braiding, so it is generally only used for cables. Mainly braided wire. Invention content: [0003] The technical problem to be solved by the present invention is to provide a processing technology for electromagnetic shielding materials, which has the advantages of convenient processing, low production cost...

AI Technical Summary

Problems solved by technology

[0002] Oxygen-free copper wire is the main shielding material in China, but the electromagnetic compatibility of oxygen-free copper wire is not as good as copper-clad steel material, so its anti-interference performance is poor

Due to the limitations of material performance and production process, the copper-clad steel used for shielding wires in China is generally larger than 0.10mm, which cannot achieve the elongation and softness required for ultra-fine specifications and wire braiding, so it is generally only used for cables. braided wire