Method for controlling surface chromatic aberration of hot rolling acid-cleaning plate

Abstract

The invention relates to a method for controlling surface chromatic aberration of a hot rolling acid-cleaning plate, which comprises the following steps that: a staggered arrangement mode is adopted for high-pressure water de-scaling nozzles at the inlet and the outlet of a rough mill; a four-roller reversing rough mill adopts rolling for 3 to 5 times; when the rough mill performs rolling, a mode of de-scaling by using the high-pressure water at the inlet side of the rough mill for each time is adopted; the inlet side of the rough mill is the position for steel billets to get into the rough mill; the high-pressure water de-scaling is performed between the frames of a finishing mill group; and an upstream frame of the finishing mile group adopts the high-pressure water between the frames for the de-scaling. Compared with the prior art, the method has the advantages of effectively eliminating the surface landscape pattern chromatic aberration of the hot rolling acid-cleaning plate of band steel, and improving the surface quality of the hot rolling acid-cleaning plate products.

Description

technical field [0001] The invention relates to a method for controlling surface color difference of steel for hot-rolled pickling plates. Background technique [0002] In the prior art, when producing hot-rolled substrate strips for hot-rolled pickling plates, descaling is usually carried out on one side of the roughing mill, and color differences similar to landscape patterns often appear on the final product. The appearance of such color differences , so that the products after pickling cannot meet the user requirements with higher surface quality requirements, which has a greater impact on the product qualification rate. Contents of the invention [0003] The purpose of the present invention is to provide a method for controlling the color difference of the steel surface for hot-rolled pickling plates. The method is to use descaling on both sides of the roughing mill when producing hot-rolled steel plates for pickling, and the descaling nozzles on both sides are arrang...

AI Technical Summary

Problems solved by technology

[0002] In the prior art, when producing hot-rolled substrate strips for hot-rolled pickling plates, descaling is usually carried out on one side of the roughing mill, and color differences similar to landscape patterns often appear on the final product. The appearance of such color differences , so that the products after pickling cannot meet the requirements of users with high requirements on surface quality, which has a great impact on the product qualification rate

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