Surface treatment method for iron wires used for civil engineering

Abstract

The invention provides a surface treatment method for iron wires used for civil engineering and belongs to the field of metal surface treatment processes. The surface treatment method for the iron wires used for the civil engineering is used for solving the problems that pickling in the prior art is performed through hydrochloric acid, lots of water resources can be wasted easily, and water after cooling water washing cannot be reused. The surface treatment method includes the steps that after the whole bundle of iron wires are subjected to first time of pickling dirt removing, first time of water washing, heat treatment and cooling water washing, the whole bundle of iron wires are unfolded and pulled into a line shape to be subjected to second time of pickling, second time of water washing, first time of neutralizing water washing and anti-rusting water washing; pickling liquid adopted during the second time of pickling is composed of phosphoric acid and a BW-500P phosphoric acid fast pickling agent, the temperature of the pickling liquid is kept between 35 DEG C to 50 DEG C, an ultrasonic device is placed on the middle rear portion of a pickling pond, and ultrasonic pickling is kept for more than 20 seconds; and cooling water after cooling treatment is discharged into a first water washing pond corresponding to the first time of water washing, a second water washing pond corresponding to the second time of water washing, a third water washing pond corresponding to the first time of neutralizing water washing and an anti-rusting water washing pond corresponding to the anti-rusting water washing.

Description

technical field [0001] The invention relates to the field of metal surface treatment technology, in particular to a surface treatment method for iron wire used in civil engineering. Background technique [0002] When building houses, walls or columns in the early stage of construction, it is necessary to set the formwork and steel bars first, and the formwork and steel bars are completely tied and tied with iron wires, and then the cement slurry is poured and waited for forming, and the waiting time for grouting is at least several hours. For several days at most, the iron wire is exposed to the outdoors and in contact with the moisture in the air, which is easy to rust and destroy the strength of the iron wire or even cause the wire to break, thus affecting the quality of the wall or column after grouting. [0003] In the prior art, in order to prevent the iron wires from rusting, all the iron wires used in civil engineering constructions need to be treated with anti-rust t...

AI Technical Summary

Problems solved by technology

[0006] The embodiment of the present invention provides a surface treatment method for iron wire used in civil engineering, which is used to solve the existing problem of using hydrochloric acid for pickling, which easily causes a lot of waste of water resources, and the water after cooling and washing cannot be reused