Wire rod metal surface pretreatment method, wire rod rust removal method and sand blasting device

Abstract

The invention provides a wire rod metal surface pretreatment method. The wire rod metal surface pretreatment method comprises following step that bending rust removal, steel brush rust removal, abrasive belt rust removal, sand blasting rust removal, ultrasonic washing and pressure water flushing are sequentially carried out so as to achieve wire rod surface mechanical rust removal. The invention further discloses a wire rod rust removal method. The wire rod rust removal method comprises the following steps of S1, mechanical rust removal, S2, washing, S3, boronizing, S4, drawing and S5 windingup. The invention further provides a sand blasting device. The device comprises a shell, a sand box is arranged on the bottom of the shell, multiple inlets and multiple outlets allowing multiple wirerods to enter in and out are symmetrically formed in the two sides of the shell, multiple sand blasting heads are arranged at the upper end of the interior of the shell, and the sand blasting heads communicate with a sand box for sand blasting. According to the wire rod metal surface pretreatment method, the mechanical rust removal method is adopted, acid pickling and phosphorization processes arereduced, environment friendliness and high efficiency are achieved, in the mechanical rust removal process, surface rust is removed, boronizing is carried out to form a boronizing film, friction in the drawing process is reduced, and the secondary damage on the surface of a wire rod is avoided.

Description

technical field [0001] The invention belongs to the technical field of steel wire manufacturing, and in particular relates to a method for pre-treating a metal surface of a wire rod, a method for removing rust from a wire rod and a sandblasting device. Background technique [0002] Wire rods generally need to be derusted before entering the wire drawing machine for drawing. In the current steel wire manufacturing industry, the following steps are often used for the derusting process of wire rods: [0003] (1) Pickling: The wire rods are first subjected to pickling treatment in the hydrochloric acid pickling tank in the heat treatment workshop to remove the rust and rolling skin on the surface of the wire rods. The pickling tanks in this project are located on each production line and are closed pickling, not separate A pickling workshop is set up, and the process uses a dilute hydrochloric acid solution made up of 30% hydrochloric acid and water in a ratio of 1:1 (the acid s...

AI Technical Summary

Problems solved by technology

[0011] In the above-mentioned rust removal process, a large amount of pickling waste gas, waste acid solution, acid residue, phosphating washing wastewater, phosphorus residue and soap residue are produced. The acid residue and waste acid solution will seriously pollute the water quality and soil, and cannot be directly discharged. Phosphating flushing wastewater and phosphorus slag can easily lead to phosphating of water quality. Therefore, it is necessary to purchase corresponding treatment equipment for treatment. The purchase of treatment equipment requires a lot of money and increases production costs.

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