A method for controlling surface color difference of hot-rolled pickled sheet

A control method, hot-rolled pickling technology, which is applied in metal rolling, roll speed control, temperature control, etc., can solve the problems that the product qualification rate is greatly affected, and the product cannot meet the user's requirements for surface quality, so as to improve the surface quality , Eliminate the effect of water mark color difference

Active Publication Date: 2012-02-01
ANGANG STEEL CO LTD
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for controlling surface color difference of hot-rolled pickled sheet
  • A method for controlling surface color difference of hot-rolled pickled sheet
  • A method for controlling surface color difference of hot-rolled pickled sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] A method for controlling the surface color difference of a hot-rolled pickled plate. When producing a hot-rolled substrate, the following measures are taken:

[0025] 1) High-pressure water descaling nozzles are used on both sides of the roughing mill for descaling, and the descaling header nozzle 1 on the roughing mill inlet side and the descaling header nozzle 2 on the roughing mill outlet side are arranged in a staggered manner; the overlapping amount (D )7~10mm, vertical nozzle height (h2)150~250mm, descaling water pressure 15~25MPa;

[0026] 2) The four-roll reversible roughing mill adopts 3 to 5 passes for rolling. The high-pressure water descaling at the entrance side of the pass, the entrance side of the roughing mill is the position where the billet enters the rolling mill, and the high-pressure water descaling between the stands of the finishing rolling mill; 1st, 4th, and 5th pass high-pressure water descaling at the entrance side (high-pressure water descal...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a method for controlling the surface color difference of steel for hot-rolled pickling plates. The method adopts the method of staggering the arrangement of high-pressure water descaling nozzles at the entrance and exit of the roughing mill, and adopts 3 to 5 passes in the four-roller reversible roughing mill. The second rolling, when rolling in the roughing mill, adopts the method of descaling with high-pressure water at the entrance side of the roughing mill for each pass. The upstream racks of the finishing mill are descaled by high-pressure water between the racks. Compared with the prior art, the beneficial effect of the present invention is that the method can effectively eliminate the color difference of mountains and rivers on the surface of the hot-rolled pickled strip, and improve the surface quality of the hot-rolled pickled strip.

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): B21B45/08B21B37/74B21B37/46
Inventor 史乃安关菊丁燕勇
Owner ANGANG STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap