Production process of hot-dip tinned copper-clad steel

Abstract

The invention discloses a hot-dip tinned copper-clad steel production process, comprising the following steps: S1: wire drawing, drawing the base material through a wire drawing machine to make a wire with a diameter of 0.1-1.0mm; S2: plasma annealing, using plasma The wire is annealed by the body, the plasma is nitrogen plasma, the electric field voltage between the cathode and the anode of the plasma is controlled at 0.2-12KV, and the distance between the plasma generator in the plasma annealing equipment and the wire is controlled At 10-100mm, the annealing temperature is 300-1000°C; S3: hot-dip tinning, the temperature of the molten tin in the tin furnace is controlled at 220-500°C, and the aperture of the tin-plating mold is 0.001-0.01mm larger than the diameter of the wire; S4: Cooling, cooling the tinned wire with water, and then using a fan to air cool the wire to dry the water on the wire; S5: Take-up and packaging.

Description

technical field [0001] The invention relates to a production process of hot-dip tinned copper-clad steel. Background technique [0002] In the production of wire and cable, the most commonly used plated wire is tinned copper wire, which is mainly used for conductive cores of rubber-insulated mining cables, rolling stock cables, and marine cables. After the copper wire is tinned, it can effectively prevent the oxidation of the copper wire and the sticky rubber caused by the contact between the copper wire and the rubber, and the blackening of the copper wire, etc., and at the same time improve the service life of the cable and the welding of the core. [0003] At present, the hot-dip tinning process of copper wire includes the following steps: unwinding—annealing—cooling—drying—pickling—tinning—reeling. For the existing process, the pickling process usually uses a strong acid solution. Although it can guarantee the tinning effect of the conductor, it will cause many disadvan...

AI Technical Summary

Problems solved by technology

[0005] Although it uses water vapor to clean the surface of the copper wire, which saves the pickling process, does not pollute the environment, does not produce acid gas and does not corrode, but it cannot solve the problem of wire breakage when the wire passes through the die hole on the tin-plating die