Medium-carbon steel wire pickling process method

Abstract

The invention relates to the technical field of wire pickling processes, in particular to a medium-carbon steel wire pickling process method. The medium-carbon steel wire pickling process method comprises the following steps of 1, sequentially putting medium-carbon steel wires into pickling tanks 1-5, controlling the concentrations of hydrochloric acid and ferrous chloride in the pickling tanks, and controlling the pickling time to be 8-12 minutes; 2, in the pickling process, controlling the temperature of pickling solutions in the five pickling tanks to be kept at 30-40 DEG C; 3, adding a proper amount of corrosion inhibitor into the 2nd-5th pickling tank; 4, feeding the medium-carbon steel wire into a clear water washing tank from the pickling tank to be soaked, and washing acid liquor on the surface away; 5, feeding the medium-carbon steel wire into the flushing tank from the clear water washing tank and flushing with high-pressure clear water; 6, feeding the medium carbon steel wire subjected to high-pressure water washing into drying equipment for heating and drying; and 7, after the medium carbon steel wire is fully dried and then returns to the normal temperature, and feeding the medium carbon steel wire into wire oiling equipment to be subjected to surface lubrication and coating.

Description

Technical field[0001]The invention relates to the technical field of wire pickling technology, in particular to a process method for medium carbon steel wire pickling.Background technique[0002]Hydrochloric acid pickling can effectively dissolve the iron oxide scale, and the produced ferrous chloride is easily soluble in water, so the pickling reaction products remaining on the surface of the wire can be easily washed off with water. This ensures that when pickling in a hydrochloric acid solution, the quality of the wire surface is relatively high. Generally, after pickling with hydrochloric acid, the wire has a clean, bright, and smooth surface without spots, so it is widely used. However, due to the increasing use of medium carbon steel wire rods (with a carbon content of 0.50%), trace alloying elements (Mn, Cr, Si) have increased. The components in the pickling have a certain change during the reaction process, resulting in the surface quality of the medium carbon steel wire after...

AI Technical Summary

Problems solved by technology

The components in the pickling will change to a certain extent during the reaction process, causing the surface quality of the medium carbon steel wire rod after pickling to be rough, sticky or greasy on the surface, which makes the medium carbon steel wire rod Pickling quality suffers