Processing method of fine and bright flat steel

Abstract

The invention discloses a processing method of a fine and bright flat steel. The processing method of the fine and bright flat steel comprises the following steps that A1, material selection and cutting are achieved: a steel bar is selected and the bar is cutted according to the required size to form a processed blank; B1, hot rolling is conducted, specifically, the blank is fully heated and subjected to hot rolling, and the blank is subjected to hot rolling to form a flat pipe material; C1, descaling is achieved; D1, annealing treatment is conducted, specifically, the flat pipe material with an oxide layer removed is placed in an annealing furnace, argon flow is injected into the annealing furnace, and a flat pipe pre-product is formed; E1, cooling is achieved: the flat pipe pre-product is cooled to room temperature, and the flat pipe pre-product is descaled again; F1, the step D1 and the step E1 are repeated twice; and G1, a product is drawn to the needed length and straightened, and a flat steel product is obtained. According to the method, multiple times of descaling and annealing treatment are adopted, in the subsequent treatment, the problem that a steel material is oxidized can be effectively avoided, so that the surface fineness and brightness of the surface of the flat steel are effectively improved, and the method is simple and high in efficiency.

Description

technical field [0001] The invention relates to the technical field of steel processing, in particular to a fine and bright flat steel processing method. Background technique [0002] Flat steel, steel with a rectangular cross-section and slightly blunt edges; flat steel can be finished steel, or it can be used as blanks for welded pipes and thin slabs for stacked thin plates. Main application: flat steel can be used as a finished material to make hoop iron, tools and mechanical parts, and it can be used as a structural part of a house frame and an escalator in a building. [0003] It is known in the flat steel production industry that there are mainly two ways to obtain flat steel, one is to cut it from a wider strip, and the other is to obtain it by first hot-rolling the flat steel bar and then cold drawing. Although the former can achieve a bright surface, it is too thick to be cut. In addition, the flat steel produced by the traditional manufacturing method has low sur...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a fine and bright flat steel processing method to solve the problem that the surface fineness and brightness of the produced flat steel are relatively low.