Production method of large high chromium steel cold roll blank

A production method and technology of cold rolling rolls, which are applied in the production and manufacturing of roll billets in the metallurgical industry, can solve the problems of reducing production costs, increasing deformation, and high production costs, and achieve the effect of strong operability and advanced technology

Inactive Publication Date: 2005-10-26
SHANGHAI IRON & STEEL CO LTD NO 5 BAOSHAN IRON & STEEL GRP
View PDF0 Cites 33 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention develops a production method of large-scale high-chromium steel cold roll billet, and adopts the low-cost smelting process of "electric arc furnace smelting + LF, DV furnace refining + steel ingot hot delivery" instead of "electric arc furnace + LFV refining furnace smelting + electrode The high-cost smelting process of rod annealing + electroslag remelting + electroslag ingot annealing” is used to smelt large-scale high-chromium steel cold roll billet steel ingots, shortening the production process (saving electrode rod annealing, electroslag remelting, electric Three processes of slag ingot annealing), and a special high-temperature homogenized steel ingot heating method (extending the holding time for 20 hours is beneficial to the elimination of the stress of the steel ingot, and the chemical elements have enough time to diffuse in the steel, improving the composition of the steel

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

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0087] Example 1: The single weight of MC3 steel ingot is 13.2 tons, and the diameter reaches Φ1040mm / 890mm→the single weight of the roll billet is 7 tons, the diameter of the rough roll body reaches Φ660mm, and the roll body diameter of the finished roll billet reaches Φ630mm; the deformation process is: the first fire pressing pliers , then return to the furnace for heating, and the holding time is 3 hours; the second fire is upsetting, upsetting to 1 / 2 of the original height of the ingot, and then returning to the furnace, and the holding time is 3 hours; the third fire is long, and the relative feed amount is controlled at 0.5~0.6, pull out to 900×900mm square intermediate billet, then return to the furnace, the holding time is 3 hours; the fourth fire upsetting, upsetting to 1 / 2 of the original height, and then return to the furnace, the holding time is 3 hours; After the fifth fire, the round intermediate billet lengthened to Φ770mm is drawn back to the furnace, the relat...

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

A production method for the blank of large cold-rolling high-Cr steel roller includes smelting in arc furnace, refining outside the furnace, conveying hot steel ingot, heating in high-temp homogenizing mode, drawing by V-shaped stock, upsetting twice, and post treating. Its advantages are short productive period and low cost.

Description

technical field [0001] The invention relates to a production method of a roll billet in the metallurgical industry, in particular to a production method for smelting and forging a large high-chromium forged steel cold roll billet. Background technique [0002] Rolling mills are commonly used equipment in the metallurgical industry. Rollers are the most important parts of rolling mills. Rollers can be divided into hot rolls (an important part of a hot rolling mill for thermal deformation of steel) and cold rolls (an important part of a cold rolling mill Parts, used for cold working deformation of steel) two kinds. As an important part of the cold-rolling mill, the cold-roller is subjected to high rolling pressure, wear stress and high alternating stress during work, and the surface quality of the cold-rolled steel product is required to be good, so the requirements for the use of the cold-roller are very high, especially It is a large cold roll used for cold rolling of steel...

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
IPC IPC(8): B23P23/04
Inventor 张洪奎续维徐明华胡俊辉刘笑莲杨磊
Owner SHANGHAI IRON & STEEL CO LTD NO 5 BAOSHAN IRON & STEEL GRP
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