Precision forming method of ultrathin stainless steel substrate for flexible product, obtained substrate and application thereof

A technology of precision molding and stainless steel, applied in furnace types, manufacturing tools, metal rolling, etc., can solve the problems of insufficient performance, high efficiency, and low cost of flexible solar cells and flexible display systems, and achieve simple and easy production methods Line, high efficiency, low cost effect

Active Publication Date: 2010-09-01
江苏呈飞新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to overcome the problem that the existing precision stainless steel foil strips cannot fully meet the needs of flexible solar cells and flexible display system substrate materials in all aspects, the purpose of the presen...

Method used

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  • Precision forming method of ultrathin stainless steel substrate for flexible product, obtained substrate and application thereof
  • Precision forming method of ultrathin stainless steel substrate for flexible product, obtained substrate and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The cold-rolled 2B surface AISI304 stainless steel strip with a thickness of 0.8mm is used as the raw material, and it is cold-rolled by a 20-high rolling mill for the first time, degreased for the first time, bright annealed for the first time, cold-rolled twice by a 20-high rolling mill, and secondly. First degreasing, second bright annealing, tension straightening, slitting / cross-cutting, inspection, packaging and storage, etc., to obtain ultra-thin stainless steel base products for flexible products. Among them, the surface roughness of the work rolls in the secondary cold rolling of the 20-high rolling mill is Ra0.50μm, and the pass deformation rate is 40%. The first bright annealing temperature is 1080 ° C, the holding time is 15 minutes, the reducing atmosphere is protected, and the cooling is rapid; The temperature of the second bright annealing is 1060° C., the holding time is 10 minutes, the reducing atmosphere is protected, and the cooling is rapid. The prepa...

Embodiment 2

[0031] The cold-rolled 2B surface AISI316 stainless steel strip with a thickness of 1mm is used as the raw material, and it is cold-rolled by a 20-roll mill for the first time, degreased for the first time, bright annealed for the first time, cold-rolled for the second time by a 20-roll mill, and the second time Degreasing, second bright annealing, tension straightening, slitting / cross-cutting, inspection, packaging and warehousing, etc., to obtain ultra-thin stainless steel base products for flexible products. Among them, the surface roughness of the work rolls in the secondary cold rolling of the 20-high rolling mill is Ra0.10μm, and the pass deformation rate is 70%; the first bright annealing temperature is 1050 ° C, the holding time is 25 minutes, the reducing atmosphere is protected, and the cooling is rapid; The temperature of the second bright annealing is 1040° C., the holding time is 9 minutes, the reducing atmosphere is protected, and the cooling is rapid. The prepar...

Embodiment 3

[0034] The cold-rolled 2B surface AISI301 stainless steel strip with a thickness of 0.8mm is used as raw material, and it is cold-rolled by a 20-high rolling mill, degreased for the first time, bright annealed for the first time, cold-rolled twice by a 20-high rolling mill, and secondly First degreasing, second bright annealing, tension straightening, slitting / cross-cutting, inspection, packaging and storage, etc., to obtain ultra-thin stainless steel base products for flexible products. Among them, the surface roughness of the work rolls in the secondary cold rolling of the 20-high rolling mill is controlled at Ra0.02μm, and the pass deformation rate is 65%; the first bright annealing temperature is 1070 ° C, the holding time is 15 minutes, the reducing atmosphere is protected, and the cooling is rapid ; The second bright annealing temperature is 1060 ° C, the holding time is 10 minutes, the reducing atmosphere is protected, and the cooling is rapid. The prepared ultra-thin s...

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Abstract

The invention discloses a precision forming method of an ultrathin stainless steel substrate for a flexible product, an obtained substrate and an application thereof. The method comprises the following steps: taking a cold-rolled 2B-surface AISI300 series stainless steel band with the thickness of 0.8-1mm as a raw material, twenty-high rolling, debinding, bright annealing, secondary cold-rolling by a twenty-high roll mill, debinding, bright annealing, tension straightening, length cutting/cross cutting, inspecting, packaging and the like. The ultrathin stainless steel substrate has the grain size of 5-6 grades, uniform internal stress distribution, the thickness deviation of +/-0.002, the thickness of 0.03-0.2mm, surface roughness of Ra20nm-Ra500nm, surface evenness of 1-2I-Unit, and the yield strength of less than 200MPa. The ultrathin stainless steel substrate is applied to a flexible solar cell and a flexible display product. The invention has simple and feasible production method, low cost, high product quality and high production efficiency.

Description

technical field [0001] The invention relates to a precision forming method of an ultra-thin stainless steel base material, in particular to a precision forming method of an ultra-thin stainless steel base material for flexible solar cells and flexible display products, the obtained base material and the application of the base material. Background of the invention [0002] Flexible substrate thin-film solar cells refer to batteries made on flexible materials (such as stainless steel, polyester film). It is characterized by light weight, foldable and unbreakable, and has excellent flexibility. It can be curled, cut, and pasted arbitrarily. Even if it is bent into a small radius and curled hundreds of times, the performance of the battery will not change. . Since thin film solar cells and thin film transistors (thin film transistor, TFT) have a similar stacked structure, currently the world's major manufacturers of flexible substrate thin film solar cells in the United States...

Claims

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Application Information

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IPC IPC(8): B21B1/40C21D9/52C21D1/26C23G3/02H01L51/44
CPCY02E10/549
Inventor 朱建平陶杰汪涛柏继华
Owner 江苏呈飞新材料科技有限公司
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