A kind of phosphating treatment solution for steel drawing at room temperature

Abstract

The invention discloses a normal-temperature phosphating fluid for drawing steel. The liquid is prepared by nitrate, nitrite, nitroguanidine, molybdate, phosphate, an accelerant and deionized water. The liquid can be used for performing normal-temperature phosphating on the steel for drawing, and can reach a same effect under a relatively-high-temperature phosphating; under the normal temperature, after 3 to 5 minutes, a layer of black, even and compact phosphating film can be formed on the surface of the steel, and the corrosion resistance is tested to be above the national standard. The problems of large high-temperature phosphating liquid consumption, high possibility in stripping, long phosphating time and the like are solved.

Description

technical field

[0001] The invention relates to a phosphating treatment solution, in particular to a normal temperature phosphating treatment solution for steel drawing. Background technique

[0002] In the process of steel drawing, phosphating treatment must be carried out on the surface of the steel first, and the steel after phosphating has a better lubricating effect. However, this phosphating treatment process can only meet the drawing requirements under the condition of 70°C-90°C, and the production energy consumption is high. The existing room temperature phosphating treatment solution can carry out phosphating treatment at room temperature, but it cannot guarantee that the steel material will not be stripped after phosphating, because there are many phosphorous slags and the phosphating speed is not high enough. The steel drawing room temperature phosphating treatment liquid of the present invention can carry out phosphating and drawing of the steel under normal tem...