On-line low temperature electrolysis phosphating method for steel wires

Abstract

The invention discloses an on-line low temperature electrolysis phosphating method for steel wires, which comprises the steps of paying off, intermediate-frequency induction heat treatment, water bath quenching, stabilizing treatment, steel wire surface scale treatment, activation, low temperature electrolysis phosphorization, passivation and taking up. The on-line low temperature electrolysis phosphating method for the steel wires has the advantages of being time-saving, labor-saving, green and environment-friendly, good in phosphating effect and short in phosphating time.

Description

technical field [0001] The invention relates to an online low-temperature electrolytic phosphating method for steel wire. Background technique [0002] At present, in the deep drawing processing industry of metal products, in order to obtain steel wires of certain specifications and strength levels, multiple processing procedures are required: put the high-carbon steel wire rods into the pickling pool, and use the chemical reaction between hydrochloric acid and the wire rods to remove the surface of the wire rods. After being washed by high pressure, it enters the phosphating tank, soaks in the phosphating solution at 70°C-80°C for 5-10 minutes, so that the surface of the wire does not have a layer of phosphate coating, and saponifies after washing with water, which is beneficial to the steel wire. Drawing, after drawing, it becomes a semi-finished product. Due to work hardening, it cannot be further drawn, so it needs to be subjected to austempering heat treatment. After th...

AI Technical Summary

Problems solved by technology

Among them, intermittent medium-temperature immersion phosphating is time-consuming and labor-intensive, and produces a large amount of phosphate sediment, which seriously pollutes the environment and affects the efficiency of phosphating.