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

Ferrite stainless steel cold-rolled steel band and manufacturing method thereof

A cold-rolled steel strip and stainless steel technology, applied in the manufacture of converters, temperature control, etc., can solve problems affecting the surface quality of cold plates

Active Publication Date: 2010-02-17
SHANXI TAIGANG STAINLESS STEEL CO LTD
View PDF4 Cites 28 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These two patents will inevitably affect the surface quality of the cold plate due to the addition of Ti and Nb elements to the material

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The finished steel plate in this embodiment has a thickness of 0.60 mm, is produced in one cold rolling process, and has a cold rolling deformation rate of 80%.

[0041] The mass percentage ratio of the chemical composition of the present embodiment is:

[0042] C 0.02% Si 0.29% Mn 0.47%

[0043] Cr 16.36% P 0.017% S 0.002%

[0044] N 0.020% Ni 0.16%

[0045] The rest is Fe and unavoidable impurities.

[0046] After smelting, continuous casting, hot rolling, bell furnace annealing, cold rolling, and continuous line annealing, the product r value of the cold-rolled ferritic stainless steel plate is 1.25, Δr is 0.35, and the surface of the product after the steel strip is stretched and deformed The upper wrinkle height is 10.9 μm.

Embodiment 2

[0048] The thickness of the finished steel plate in this embodiment is 0.50 mm, produced in one cold rolling process, and the cold rolling deformation rate is 83%.

[0049]The mass percent of the chemical composition of the present embodiment is:

[0050] C 0.03% Si 0.28% Mn 0.45%

[0051] Cr 17.15% P 0.019% S 0.001%

[0052] N 0.024% Ni 0.12%

[0053] The rest is Fe and unavoidable impurities.

[0054] After smelting, continuous casting, hot rolling, bell furnace annealing, cold rolling, and continuous line annealing, the product r value of the cold-rolled ferritic stainless steel plate is 1.28, Δr is 0.33, and the steel strip is wrinkled after stretching and deformation The height is 12.8 μm.

Embodiment 3

[0056] The finished steel plate in this embodiment has a thickness of 0.60 mm, is produced in one cold rolling process, and has a cold rolling deformation rate of 80%.

[0057] The mass percentage ratio of the chemical composition of the present embodiment is:

[0058] C 0.03% Si 0.29% Mn 0.48%

[0059] Cr 15.26% P 0.018% S 0.001%

[0060] N 0.016% Ni 0.10%

[0061] The rest is Fe and unavoidable impurities.

[0062] After smelting, continuous casting, hot rolling, bell furnace annealing, cold rolling, and continuous line annealing, the product r value of the cold-rolled ferritic stainless steel plate is 1.31, Δr is 0.32, and the steel strip is wrinkled after stretching and deformation The height is 11.3 μm.

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
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a ferrite stainless steel cold-rolled steel band and a manufacturing method thereof. The ferrite stainless steel cold-rolled steel band comprises the following chemical ingredients in percentage by weight: 0.02%-0.04% of C, 0.10%-0.50% of Si, 0.10%-1.00% of Mn, 14.0%-19.0% of Cr, less than or equal to 0.030% of P, less than or equal to 0.010% of S, more than 0% while lessthan or equal to 0.030% of N, more than 0% while less than or equal to 0.60% of Ni, and the balance of Fe and unavoidable impurities. The manufacturing method comprises the following steps: (1) smelting, i.e. smelting liquid steel according to the requirement of the steel band; (2) continuous casting, i.e. casting into a continuous casting billet; (3) casting billet hot rolling, i.e. rolling the casting billet into a hot rolled coil; (4) hot coiling annealing, i.e. preserving the temperature at 800 DEG C-880 DEG C for the temperature preserving time of 10-13 hours, freely reducing the temperature to 600 DEG C after the temperature preservation is completed; (5) cold rolling, i.e. adopting once cold rolling or twice cold rolling among cold rolled finished products; and (6) cold coiling annealing, i.e. controlling annealing temperature at 860+ / -20 DEG C, and controlling annealing time according to 2-5 minutes / mm. The ferrite stainless steel cold-rolled steel band has good cold processingforming property and excellent crinkling and breaking resistance.

Description

technical field [0001] The invention relates to a ferritic stainless steel cold-rolled strip and a manufacturing method thereof. Background technique [0002] Compared with austenitic stainless steel, ferritic stainless steel does not contain the precious metal nickel and is cheaper. Due to the low thermal expansion coefficient, good thermal conductivity and excellent stress corrosion resistance of ferritic stainless steel, it has broad application prospects in household appliances, kitchen equipment, elevator panels, electronics industry, automobile exhaust systems and other fields, and can replace Austrian steel in many application fields. Tensitic stainless steel. [0003] However, the processing performance of ferritic stainless steel is poor. On the one hand, its cold forming performance is poor, and it is easy to crack and cause waste during the stamping process; at the same time, a corrugated defect called wrinkle often appears on the processed surface. The existenc...

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
IPC IPC(8): C22C38/40C22C33/04C21C5/28C21C7/068C21C7/10B22D11/16C21D8/02C21D1/26B21B37/74
Inventor 刘洪涛范光伟
Owner SHANXI TAIGANG STAINLESS STEEL CO LTD
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com