Method of preventing heavy gauge strip steel from being scratched among finishing mill racks

A finishing mill and thick-gauge technology, applied in the field of metallurgical industry control, can solve problems such as scratches, achieve the effects of improving the pass rate, avoiding scratches, and improving surface quality

Active Publication Date: 2016-07-06
SHOUGANG JINGTANG IRON & STEEL CO LTD
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a method for avoiding the scratches of the thick-gauge steel strip between the finishing mill stands. The lower guide plate is scratched, which solves the problem of scratches on the lower surface after rolling thick-gauge strips through the rolling mill.

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
  • Method of preventing heavy gauge strip steel from being scratched among finishing mill racks
  • Method of preventing heavy gauge strip steel from being scratched among finishing mill racks
  • Method of preventing heavy gauge strip steel from being scratched among finishing mill racks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Embodiment 1: as figure 1 As shown, the embodiment 1 of the present application avoids the method that the thick-gauge steel strip is scratched between the finishing mill stands and comprises the following steps:

[0042] Step S1: Before rolling the thick-gauge strip steel, select the roll diameter of the lower work roll of the empty rolling mill to be 630 mm, so that the elevation of the rolling line of the empty rolling mill is a positive elevation; The line elevation is +5mm.

[0043] Step S2: After throwing steel from the final rolling stand of the finishing mill, stop the mill and turn off the cooling water of the work roll; lift the looper to the highest position of the machine, insert the safety pin of the looper, and install a A spacer with a thickness of 20mm, a steel sleeve is installed at one end of the brake buffer on both sides under the looper, a spacer or sleeve with the same thickness on each side, and the spacers on each side are located at Between th...

Embodiment 2

[0047] Embodiment 2: Step S1: Before rolling the thick-gauge steel strip, by moving the position of the lower work roll step pad (the lower step pad is located below the lower support roll, and the lower support roll is located below the lower work roll), so that the empty rolling mill The elevation of the rolling line is the positive elevation; the elevation of the guaranteed rolling line is +8mm.

[0048] Step S2: After throwing steel from the final rolling stand of the finishing mill, stop the mill and turn off the cooling water of the work roll; lift the looper to the highest position of the machine, insert the safety pin of the looper, and install a A gasket with a thickness of 30mm, a steel sleeve is installed at one end of the brake buffer on both sides under the looper, and a gasket or sleeve with the same thickness is installed on each side, and the gaskets on each side are located at the corresponding Between the side sleeve and the brake lever; pull out the safety p...

Embodiment 3

[0052] Embodiment 3: Step S1: Before rolling the thick-gauge steel strip, select the roll diameter of the lower work roll of the empty rolling mill to be 850mm, so that the elevation of the rolling line of the empty rolling mill is a positive elevation; After the machine, ensure that the elevation of the rolling line is +10mm.

[0053] Step S2: After throwing steel from the final rolling stand of the finishing mill, stop the mill and turn off the cooling water of the work roll; lift the looper to the highest position of the machine, insert the safety pin of the looper, and install a A spacer with a thickness of 40mm, a steel sleeve is installed at one end of the brake buffer on both sides under the looper, and a spacer or sleeve with the same thickness is placed on each side, and the spacers on each side are located at Between the sleeve and the brake lever on the corresponding side; pull out the safety pin of the looper, drop the looper, and confirm that the waiting position ...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The invention provides a method of preventing heavy gauge strip steel from being scratched among finishing mill racks. The method comprises the following steps of: adjusting the elevation of a rolling line of an idle rolling mill to right elevation; and adjusting the mechanical position of a downstream loop of the idle rolling mill, to be specific, lifting the loop to the mechanical highest position, arranging a gasket on a brake bar below the loop and a sleeve on a buffer below the loop, dropping down the loop, and identifying the waiting position angle of the loop. The method has the beneficial effects that the rolling line is in the right elevation, and strip steel is lifted; the waiting position angle of the loop is increased by adjusting the mechanical position of the downstream loop of the idle rolling mill, thereby preventing the lower surface of the strip steel from scratching a lower guide plate of a rolling mill outlet, completely solving the surface scratching problem of the strip steel, greatly increasing the percent of pass of strip steel quality and ensuring the smooth production.

Description

technical field [0001] The invention relates to the technical field of control in the metallurgical industry, in particular to a method for avoiding scratches of thick-gauge steel strips between finishing mill stands. Background technique [0002] In the metallurgical industry, the hot-rolled sheet process generally includes a finishing mill, which is the most critical equipment and affects various control indicators of the finished product. The finishing mill generally includes work rolls, backup rolls, roll adjustment devices, guide devices, loopers, etc. Among them, the finishing rolling unit includes a plurality of stands, and each stand includes an upper work roll and a lower work roll for rolling strip steel, and side guide plates, loopers, etc. are respectively arranged on both sides of the entrance of each stand. Located before the guide plate on the entrance side; the looper is a device used to support the strip steel, form a certain amount of sleeve, and keep the ...

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): B21B1/26B21B41/00B21B31/16
CPCB21B1/26B21B31/16B21B41/00
Inventor 荣彦明张卫国袁秉文陈永平陈建宇王晓鹏
Owner SHOUGANG JINGTANG IRON & 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