Method capable of reducing strip steel edge shearing amount

A strip and edge cracking technology, applied in the field of cold-rolled strip, can solve problems such as high production cost, deviation between the center of the strip and the center of the production line, and a large impact on the yield, so as to reduce the amount of shearing waste and reduce the amount of waste , The effect of improving the yield

Active Publication Date: 2018-01-26
ANGANG STEEL CO LTD
View PDF9 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic cold-rolled silicon steel manufacturers generally use edge trimming to remove edge cracks after rolling. The edge trimming unit is controlled by an automatic control system. The final strip center d

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

Embodiment Construction

[0032] A kind of method of reducing strip trimming amount described in the present invention is applicable to the production of cold-rolled silicon steel, comprising:

[0033] 1) Classify the edge crack defects of the rolling mill off-line steel coils:

[0034] Type A side crack defect: there is a side crack on one side of the transmission side or the operation side, and there is no side crack on the other side;

[0035] Type B edge crack defect: There are edge cracks on both sides of the steel coil, and the depth and size of the edge cracks on both sides are basically the same;

[0036] Type C edge crack defect: There are edge cracks on both sides of the steel coil, but one side is obviously more serious than the other side;

[0037] 2) For Type A edge crack defects, the unilateral shear method is adopted, as follows:

[0038] a. In order to ensure that the center of the panel does not deviate from the center of the production line after trimming, first set the parameters i...

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 capable of reducing strip steel edge shearing amount. The method is suitable for the cold rolled silicon steel production and comprises the steps that rolling mill offline steel coil edge crack defect conditions are classified; secondly, a single-side shearing method is adopted in the edge crack defects of the A class to achieve edge shearing; thirdly, a non-equal-side shearing method is adopted in the edge crack defects of the B class and the C class; fourthly, in the cold rolling mill strip penetrating process, the positions of a deviation correcting rollerand the strip steel are adjusted to coincide with the central position of a production line; fifthly, when a cold rolling mill begins to start, the strip steel runs at the low speed, measuring is carried out multiple times, when it is found that the edge shearing amount is not even, a device is manually deviated in time to achieve adjustment, and in addition, tension of the rolling in the specialcondition is controlled. According to an automatic control system of an edge shear unit, the method that the dual-side edge shearing manner is adopted to achieve set value inputting, according to actual needs, and manual adjustment is achieved is adopted, the strip steel minimum shear amount is achieved, the product yield is improved, and the production cost is reduced.

Description

technical field [0001] The invention relates to the technical field of cold-rolled steel strips, in particular to a method for reducing the trimming amount of steel strips in the production of cold-rolled silicon steel. Background technique [0002] In iron and steel products, cold-rolled silicon steel is used to make iron cores of various motors and transformers. It is an indispensable and important soft magnetic alloy in electric power, electronics and military industry, and is also an important metal functional material for energy saving. Such products are Due to the complex production process and many control difficulties of the high-tech products that are urgently needed in the country, their production can be used as a manifestation of the comprehensive strength of a country's steel industry. [0003] As the yield strength and tensile strength of cold-rolled silicon steel increase significantly with the increase of silicon content, the elongation decreases significantl...

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): B23D31/00B23D33/00
Inventor 朱丽君王晓峰苗晓雨代金生胡洪旭
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