Surface treatment method of ribbed stainless steel bar

Abstract

The invention relates to a metal surface treatment method, in particular to a surface treatment method of a ribbed stainless steel bar. The surface treatment method comprises the following steps of (S1) performing shot blasting treatment on the ribbed stainless steel bar: performing the shot blasting treatment on the hot rolling ribbed stainless steel bar, wherein the shot blasting granularity is0.15 to 0.6 mm, the shot blasting speed is 40 to 100 m / s, the shot blasting flow is 60 to 160 kg / m<2>, and the surface scale of the ribbed stainless steel bar is cleaned basically after the shot blasting treatment is performed; (S2) pickling the ribbed stainless steel bar on which the shot blasting treatment is performed by adopting a pickling solution, wherein effective components of the picklingsolution include boric acid and sulfamic acid (NH2SO3H), and flushing for many times after pickling; (S3) performing passivating treatment on the pickled ribbed stainless steel bar, wherein a passivating solution is a mixed solution of sulfamic acid and water; (S4) performing scalding treatment on the passivated ribbed stainless steel bar; and (S5) naturally airing the scalded ribbed stainless steel bar. Compared with a stainless steel surface treatment process in the prior art, the surface treatment method has the advantages of good surface quality, environmental friendliness and energy conservation.

Description

technical field [0001] The invention relates to a metal surface treatment method, in particular to a surface treatment method for ribbed stainless steel bars. Background technique [0002] Due to the advantages of high corrosion resistance, high strength and toughness and low life cycle cost, ribbed stainless steel bars are more and more favored by key construction industries, and are gradually replacing the status of carbon steel bars. They have significant advantages and broad scope in marine engineering construction application prospects. However, in the surface treatment process of ribbed stainless steel bars, due to the particularity of the uneven surface height, there has always been a problem that the surface is difficult to handle, and there will be over-corrosion on the surface of the steel bar, or oxidation at the dead angle between the longitudinal ribs, transverse ribs and other surfaces. The unwashed condition of the skin. In addition, the traditional pickling...

AI Technical Summary

Problems solved by technology

However, in the surface treatment process of ribbed stainless steel bars, due to the particularity of the uneven surface height, there has always been a problem that the surface is difficult to handle, and there will be over-corrosion on the surface of the steel bar, or oxidation at the dead angle between the longitudinal ribs, transverse ribs and other surfaces. Unwashed condition of the skin

In addition, the traditional pickling process has a great impact on the environment, and solution disposal after pickling is often a headache