Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Broken-belt reduction control method for cold rolling production of 5182 aluminum alloys

A control method and aluminum alloy technology, applied in rolling mill control devices, metal rolling, metal rolling, etc., can solve problems such as intensified work hardening, large tensile stress at both sides of the material, and increased tendency of edge cracking, etc., to achieve reduction The effect of strip breakage in cold rolling mill, stable product quality, and improved production efficiency

Active Publication Date: 2017-05-31
CHINALCO RUIMIN
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hot-rolled billet 3.0mm-0.216mm finished product is arranged in 6 passes. After the processing rate reaches 45%, the tensile strength Rm≥380Mpa, the yield strength Rp0.2≥330Mpa; the work hardening intensifies; the plasticity decreases, and the rolling process is easy Cause edge cracking tendency, resulting in broken belt
[0003] Secondly, in the rolling process, due to the uneven temperature distribution of the roll body, the temperature of the middle roll is higher than that of the edge, that is, there is a temperature difference between the middle and the edge; the edge strip is subjected to tension, and there is a large tensile stress on both sides of the material, so that Increased tendency of material to crack edges
Domestic advanced rolling mills use hot side spray to control the temperature around the roll sides, reduce the temperature difference of the roll body, and achieve the effect of controlling the tight edge of the strip. With roll hot oil injection, the ability to control the temperature difference at the edge is limited; when the product is produced with a plate shape curve, it is easy to break the strip, the thinner the thickness, the harder the processing, the broken strip rate reaches 20-25%, and the exit thickness is ≤0.5 mm pass, the rate of strip breakage in this pass reaches 60%, and the thickness of the product is less than or equal to 0.5mm and cannot be produced in this 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
  • Broken-belt reduction control method for cold rolling production of 5182 aluminum alloys
  • Broken-belt reduction control method for cold rolling production of 5182 aluminum alloys
  • Broken-belt reduction control method for cold rolling production of 5182 aluminum alloys

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described below in conjunction with the drawings and embodiments.

[0038] This embodiment provides a method for reducing strip breakage in cold rolling production of 5182 aluminum alloy, which specifically includes the following steps:

[0039] Step S1: Establish the edge coverage weight of 5182 alloy strip according to the following formula:

[0040] F d =[(W (x) *F e ) / X e ]+[1-W (x) *F e±1 ] / X e±1 ;

[0041] Where X e Covering width of the strip edge in the plate-shaped roll area, W (x) Is the weight of the strip edge coverage area, F e Is the force of the edge area of ​​the shape meter, e±1 is the number of adjacent areas on both sides of the strip. The specific calculation principle diagram is as follows figure 1 Shown

[0042] Step S2: Fit the flat target curve:

[0043] Y=-5x 2 -130x 6 +110x 8 ;

[0044] Among them, x is the width specification of the strip, the center position of the strip is zero, the width of the strip ranges from -...

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
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a broken-belt reduction control method for cold rolling production of 5182 aluminum alloys. The control method includes the steps: building side covering weight of belt materials to obtain a plate shape distortion function based on original rolling process of the 5182 aluminum alloys; optimizing rolling reduction and rolling oil parameters. According to control method, the 5182 aluminum alloys have the advantages that belt breaking frequency of a cold-rolling mill can be reduced, production efficiency is improved, production safety is ensured, and product quality is stabilized.

Description

Technical field [0001] The invention relates to the field of cold rolling, in particular to a control method for cold rolling to produce 5182 aluminum alloy to reduce strip breaks. Background technique [0002] The company’s leading product 5182 aluminum alloy material is mainly arranged in the Φ440 / Φ520 / Φ1250×1850 / 2050 / 18003# cold rolling mill. 5182 is one of the high-strength alloys in the 5XXX series alloys, and its Mg content is higher due to the atomic radius of AL than Mg The atomic radius of is small, so Mg produces a strong strengthening effect in AL; with the increase of Mg content, the strength of the alloy increases, and the plasticity decreases. The finished products of 3.0mm-0.216mm hot-rolled billet are produced in 6 passes. After the processing rate reaches 45%, the tensile strength Rm≥380Mpa and the yield strength Rp0.2≥330Mpa; the work hardening is intensified; the plasticity decreases, and the rolling process is easy Causes the tendency of edge cracking, leadin...

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): B21B37/00G06F17/50B21B1/22
CPCB21B37/00B21B2001/221G06F30/17
Inventor 黄金哲王积友周国彬朱义淼欧祈武
Owner CHINALCO RUIMIN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products