Hot galvanizing process

Abstract

The invention belongs to the technical field of hot galvanizing processes, and particularly relates to a hot galvanizing process. The process comprises the following steps that S1, annealing treatmentis conducted, specifically, an uncoiled to-be-galvanized steel wire is enabled to penetrate into an annealing box, and a temperature of the annealing box is controlled to be in a range of 800 DEG C to 850 DEG C; S2, acid pickling and degreasing are conducted, specifically, an acid pickling and degreasing agent is added into an acid pickling pool, and the steel wire is immersed into the acid pickling pool through a dipping machine for acid pickling and degreasing; S3, steel wire plating assisting is conducted, specifically, the degreased steel wire in S2 is enabled to penetrate into a platingassisting pool, and a plating assisting agent is added into the plating assisting pool; and S4, steel wire galvanization is conducted, specifically, the steel wire subjected to plating assisting in S3is enabled to vertically penetrate into a galvanizing pool from the bottom end surface of the galvanizing pool, wherein a temperature of galvanizing liquid is 440 DEG C to 460 DEG C; and a liquid level stirring device is arranged in the galvanizing pool in a sliding manner and can crush a galvanizing liquid surface film condensed on the upper surface of the galvanizing liquid. According to the process, the situation that a zinc liquid film adheres to the surface of the steel wire subjected to zinc galvanizing when the galvanized steel wire penetrates out of the galvanizing liquid, and then the uniformity of the galvanized steel wire is influenced is avoided.

Description

technical field [0001] The invention belongs to the technical field of hot-dip galvanizing technology, and specifically relates to a hot-dip galvanizing technology. Background technique [0002] By firmly covering the surface of hot-dip galvanized steel wire with a layer of protective zinc layer, the steel wire produced in this way can be widely used in steel wire for overhead stranded wire, fishery, etc. Steel wire for steel rope, etc. [0003] When the steel wire is hot-dip galvanized, it needs to be immersed in the zinc liquid at about 450 ° C and kept for a certain period of time, which actually plays a short-term annealing effect on the internal structure of the steel wire, so that the work hardening of the steel wire has a certain degree of recovery, so the resistance Tensile strength will be reduced. [0004] The Chinese patent discloses a steel wire hot-dip galvanizing method. After the surface of the steel wire is coated with molten zinc liquid in a zinc pot, the ...

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Problems solved by technology

[0006] In order to make up for the deficiencies in the prior art, the present invention proposes a hot-dip galvanizing process, which is mainly used to solve the problem of the existing steel wire hot-dip galvanizing process During galvanizing, the galvanizing solution is mostly stored in the galvanizing pot. Due to the temperature difference between the inside of the galvanizing solution and the upper surface of the galvanizing solution when it comes into contact with air, a zinc film is easily formed on the surface of the galvanizing solution. When the zinc solution passes through the inside, the zinc solution bonded to the outer wall of the steel wire will bond the zinc film on the surface of the galvanizing solution to the surface of the steel wire together, which will affect the efficient and stable galvanizing operation of the steel wire by the hot-dip galvanizing process, and at the same time affect the quality of the steel wire. Galvanized quality

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