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A control method for eliminating orange peel marks on the surface of ultra-flat and ultra-thin precision strip steel for backlight panels

An ultra-thin and precise technology, applied in metal rolling, manufacturing tools, furnaces, etc., can solve the problems of poor consistency of surface crystal stress distribution, poor overall stiffness of the rolling mill, large deformation of the rolling mill stand, etc., to improve the surface orange peel problem , the effect of improving the internal stress distribution

Active Publication Date: 2022-05-17
SHANXI TAIGANG STAINLESS STEEL PRECISION STRIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially for the SUNDWIG four-column twenty-high-650 rolling mill, the overall rigidity of the rolling mill is poor, the deformation of the rolling mill frame is large during rolling, and the uniformity of the crystal stress distribution on the microscopic surface is relatively poor

Method used

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  • A control method for eliminating orange peel marks on the surface of ultra-flat and ultra-thin precision strip steel for backlight panels
  • A control method for eliminating orange peel marks on the surface of ultra-flat and ultra-thin precision strip steel for backlight panels
  • A control method for eliminating orange peel marks on the surface of ultra-flat and ultra-thin precision strip steel for backlight panels

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Embodiment 1

[0058] In this embodiment, stainless steel with a steel grade of SUS316L, a thickness of 0.4 mm, and a width of 510 m is selected as a raw material. The production process of this embodiment is divided into two rolling passes, the thickness of the middle pass is 0.15 mm, and the thickness of the finished product is 0.05 mm.

[0059] The production process of the present embodiment is specifically as follows:

[0060] 1. In the first rolling pass, the SUS316L stainless steel with a thickness of 0.4mm is rolled to a thickness of 0.15mm. The rolling schedule is as follows:

[0061]

[0062] During the rolling process, the work roll is replaced every pass to prevent the problem of roll sticking caused by the passive film removal.

[0063] 2. The SUS316L stainless steel rolled to a thickness of 0.15mm is subjected to bright annealing treatment at a temperature of 1150°C, a speed of 27m / min, an oxygen content of <10ppm, and a dew point of less than -50°C. Sampling and inspectio...

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Abstract

The invention relates to the technical field of ultra-flat and ultra-thin precision strip steel production and manufacturing, in particular to a control method for eliminating orange peel marks on the surface of an ultra-flat and ultra-thin precision strip steel on a backlight plate. The method includes: performing a first rolling process on a raw steel coil Rolling to obtain an intermediate steel strip; carrying out bright annealing on the intermediate steel strip; carrying out finished rolling process rolling on the bright annealed steel strip to obtain a finished steel strip with a flatness of no more than 3UI and a warpage of less than 10mm; After the finished steel strip is cleaned, it is subjected to tension and leveling treatment; the steel strip after tension and leveling treatment is subjected to TA heat treatment. The production method of the invention can eliminate the orange peel marks on the surface of the ultra-flat and ultra-thin precision steel strip of the backlight plate, and produce the ultra-flat and ultra-thin precision steel strip of the backlight plate for the bottom substrate of the display screen.

Description

technical field [0001] The invention relates to the technical field of ultra-flat and ultra-thin precision strip steel production and manufacturing, in particular to a control method for eliminating orange peel marks on the surface of an ultra-flat and ultra-thin precision strip steel of a backlight plate. Background technique [0002] Ultra-flat ultra-thin precision strip steel for backlight refers to ultra-flat stainless steel strip steel with a thickness of less than 0.1mm, which is used for the bottom substrate of the display screen. At present, the thinnest thickness required by the market for this product has reached 0.02mm. Due to its good flatness, high-strength mechanical properties and light and thin characteristics, it is favored by high-end and cutting-edge markets. However, with the increasing requirements of customers for products, the requirements for the flatness of ultra-thin stainless steel strips are more refined and strict, and the market applications are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/22C21D9/52
CPCB21B1/222C21D9/52
Inventor 李学斌韩小泉韩晓冬刘玉栋段浩杰房旭张艳霞
Owner SHANXI TAIGANG STAINLESS STEEL PRECISION STRIP CO LTD
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