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Ferrite stainless steel cold-rolled steel band and manufacturing method thereof
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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
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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
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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%.
[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%.
[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%.
[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.
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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. smeltingliquid 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 metalnickel 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
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Application Information
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