Rolling process of F type rail groove rolling system

A pass type and process technology, applied in the direction of rolling force/roll gap control, metal rolling, etc., can solve the problems of unfavorable metal flow, increase the size of F-shaped steel blank, and not easy to fill, etc., to achieve convenient cross-sectional shape and size of finished products , high yield and easy operation

Active Publication Date: 2019-05-07
武汉钢铁有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this method are: the two-roller mode is not conducive to metal flow, it is not easy to be filled at the tip of the leg, and R arcs or folds are easy to appear, which makes the size insufficient and increases the size of the F-shaped steel blank, thereby increasing the amount of machining

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
  • Rolling process of F type rail groove rolling system
  • Rolling process of F type rail groove rolling system
  • Rolling process of F type rail groove rolling system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with specific embodiments, so that those skilled in the art can understand.

[0024] Such as Figure 2~3 The rolling process of the shown F-rail rolling pass system comprises the following steps:

[0025] 1) Using the universal pass mode, the upper horizontal roll 1, the lower horizontal roll 2, and the two vertical rolls 3 in the horizontal direction compress and deform the rolled piece 4 from four directions, so that the metal can fill the entire pass; among them, the universal pass Mode reduction is 6mm and compression ratio is 25%;

[0026] 2) The edging machine adopts a two-roll pass pattern, and the upper roll 5 and the lower roll 6 finish the corners of the rolled piece 4; among them, the chamfer R of the rolled piece corner is 8-12mm, and the finished roll gap Set to 10 ~ 14mm.

[0027] 3) The "universal mode" and "two-roll mode" are used to repeatedly alternate rolling to ensure t...

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 structural steel hot rolling process in the technical field of metallurgy, in particular to a rolling process of an F type rail groove rolling system. The method includes the steps that a universal groove manner is adopted, a rolled piece is subjected to compression deformation in four directions through an upper horizontal roller, a lower horizontal roller, a left vertical roller and a right vertical roller, and whole grooves can be conveniently filled with metal, wherein the left vertical roller and the right vertical roller are located in the horizontal direction;a two-roller groove manner is adopted for an edging mill, and the corners of the rolled piece are finish-machined through the upper roller and the lower roller; and the manner of repeated alternate rolling of the universal manner and the two-roller manner is adopted, so that the sizes of finished products and the angles and the shapes of edges are guaranteed. The repeated alternate manner of theuniversal manner and the two-roller manner is designed to roll an F type rail, and the precision of the sizes of the finished products and the angles and the shapes of the edges are guaranteed. By means of the groove system, the sizes can be conveniently adjusted in production, through different arrangements of roller seams, the shapes and the sizes of sections of the finished products can be conveniently controlled, the operation is convenient, and the yield is high.

Description

technical field [0001] The invention relates to a section steel hot rolling process in the technical field of metallurgy, in particular to a rolling process of an F-rail rolling pass system. Background technique [0002] The earliest F-shaped rails were machined after welding. With the domestic research of medium and low speed maglev and the construction of medium and low speed maglev test lines and operation lines, the rolling of F-shaped rails began in China. For Shanghai medium and low speed maglev Luchaogang test line, F-rail is rolled by heavy steel (rolling + machining); for Beijing medium and low speed maglev transportation demonstration line (S1 line), F-rail is rolled by Laigang (finish rolling + Partial machining); F-rail of Changsha medium and low-speed maglev operation line is rolled by Anshan Zizhu (rolling + machining). [0003] The shape of the F-shaped rail is relatively complex, and it is asymmetrical up and down, left and right, and there are many dimensio...

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 Applications(China)
IPC IPC(8): B21B1/085B21B37/58
Inventor 叶佳林董茂松郑赟峰段文朱敏
Owner 武汉钢铁有限公司
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