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Manufacturing method for ultra-thin ferrite stainless steel belt with bright surface

A technology of stainless steel strip and manufacturing method, which is applied in metal rolling, manufacturing tools, contour control, etc., can solve the problems of high production cost, low yield, time-consuming and labor-intensive, etc., to improve the yield and product quality, and improve the resolution , Improve the effect of surface fineness

Active Publication Date: 2017-08-15
JIANGSU YONGJIN METAL TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional production method of ultra-thin ferritic stainless steel strip with a bright surface is as follows: (1) Grinding an ultra-thin 2B surface stainless steel strip into a bright surface. High cost; (2) After cold rolling, bright annealing, and smoothing processes, it is produced into a stainless steel strip with a bright surface
Using the above two traditional production methods to produce ultra-thin ferritic stainless steel strips with a bright surface, defects in hot-rolled raw materials such as cracks, pits, scratches, etc. cannot be eliminated, seriously affecting the quality of stainless steel strips
[0003] In view of this situation, the patent application No. 201310099004.5 mentions a method of manufacturing austenitic stainless steel strip with a bright surface. This preparation method is aimed at the processing of austenitic stainless steel strip. However, ferritic stainless steel strip The hardness of the matrix is ​​low, and the abrasive belt cannot be used for surface grinding of the ferritic stainless steel strip, otherwise there will be grinding marks on the surface of the steel strip, which cannot be eliminated in the subsequent cold rolling process, thus affecting the smoothness and brightness of the material surface

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for manufacturing an ultra-thin ferritic stainless steel strip with a bright surface, comprising the following steps:

[0027] Step 1. Production of finely controlled work rolls: firstly process the work rolls of the rolling mill until the surface roughness Ra is 0.05 μm, then polish them with a 20 μm polishing belt, control the polishing pressure to 0.5 MPa, and the polishing time to 10 minutes. Precisely controlled work rolls with surface roughness Ra of 0.02μm;

[0028] Step 2. Preliminary rolling: use a 20-high precision cold rolling mill to roll the 2.8mm thick hot-rolled stainless steel raw material into a ferritic stainless steel strip with a thickness of 0.8mm and a surface roughness Ra of 0.4μm, and control the rolling force The rolling tension is 6000KN, the rolling tension is 500KN, the rolling speed is 600m / min, the rolling oil injection speed is 300L / min, and the rolling oil temperature is 45°C;

[0029] Step 3, bright annealing: the ferritic stai...

Embodiment 2

[0036] A method for manufacturing an ultra-thin ferritic stainless steel strip with a bright surface, comprising the following steps:

[0037] Step 1. Production of precision-controlled work rolls: firstly process the work rolls of the rolling mill until the surface roughness Ra is 0.06 μm, then polish them with a 20 μm polishing belt, control the polishing pressure to 0.6 MPa, and the polishing time to 15 minutes. Precisely controlled work rolls with surface roughness Ra of 0.03μm;

[0038] Step 2. Preliminary rolling: use a 20-high precision cold rolling mill to roll the 2.9mm thick hot-rolled stainless steel raw material into a ferritic stainless steel strip with a thickness of 0.9mm and a surface roughness Ra of 0.5μm, and control the rolling force The rolling tension is 5500KN, the rolling tension is 400KN, the rolling speed is 500m / min, the rolling oil injection speed is 300L / min, and the rolling oil temperature is 43°C;

[0039] Step 3, bright annealing: the ferritic sta...

Embodiment 3

[0046] A method for manufacturing an ultra-thin ferritic stainless steel strip with a bright surface, comprising the following steps:

[0047] Step 1. Production of precision-controlled work rolls: firstly process the work rolls of the rolling mill until the surface roughness Ra is 0.05 μm, then polish them with a 20 μm polishing belt, control the polishing pressure to 0.5 MPa, and the polishing time to 10 minutes. Precisely controlled work rolls with surface roughness Ra of 0.02μm;

[0048] Step 2. Preliminary rolling: use a 20-high precision cold rolling mill to roll a 3.0mm thick hot-rolled stainless steel raw material into a ferritic stainless steel strip with a thickness of 1.0mm and a surface roughness Ra of 0.6μm, and control the rolling force The rolling tension is 5000KN, the rolling tension is 300KN, the rolling speed is 400m / min, the rolling oil injection speed is 300L / min, and the rolling oil temperature is 40°C;

[0049] Step 3, bright annealing: the ferritic sta...

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Abstract

The invention discloses a manufacturing method for an ultra-thin ferrite stainless steel belt with a bright surface. The ultra-thin ferrite stainless steel belt with the bright surface, the thickness being 0.05-0.1 mm, the surface gloss GS greater than or equal to 600 GU and the surface roughness Ra smaller than or equal to 0.02 micrometer is obtained through the processes of fine control working roller manufacturing, initial rolling, bright annealing, secondary rolling, bright annealing, finish rolling, bright annealing and leveling. According to the manufacturing method, a fine control working roller is adopted in the final pass of the finish rolling process, the surface roughness of the stainless steel belt is controlled in each process of the manufacturing process, the surface exquisiteness and the resolution of the ultra-thin ferrite stainless steel belt are greatly improved, and the surface roughness Ra of the ultra-thin ferrite stainless steel belt can be lowered to be smaller than 0.02 micrometer.

Description

technical field [0001] The invention relates to a manufacturing method of an ultra-thin ferritic stainless steel strip, in particular to a manufacturing method of an ultra-thin ferritic stainless steel strip with a bright surface. Background technique [0002] The ultra-thin ferritic stainless steel strip with bright surface has good plasticity, toughness, weldability and corrosion resistance, and the surface finish is good, so it can be directly used as the final surface material of the product. The traditional production method of ultra-thin ferritic stainless steel strip with a bright surface is as follows: (1) Grinding an ultra-thin 2B surface stainless steel strip into a bright surface. High cost; (2) After cold rolling, bright annealing, and smoothing processes, it is produced into a stainless steel strip with a bright surface. Using the above two traditional production methods to produce ultra-thin ferritic stainless steel strip with a bright surface, defects such as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21B1/28B21B37/28B21B37/00C21D8/02
CPCB21B1/28B21B37/00B21B37/28B21B2201/04B21B2261/14B21B2267/10C21D8/0205
Inventor 董赵勇贲海峰王国军单朝晖王勇
Owner JIANGSU YONGJIN METAL TECHNOLOGY CO LTD
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