High-surface quality ferrite stainless steel plate and manufacturing method thereof
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A ferritic and stainless steel technology is applied to a ferritic stainless steel plate, which can solve the problems of low roughness and achieve the effects of low roughness, good formability and high brightness
Active Publication Date: 2013-09-04
BAOSTEEL DESHENG STAINLESS STEEL
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[0010] The object of the present invention is to provide a ferritic stainless steel plate with high surface quality, high gloss, high brightness and low roughness and its manufacturing method, which is a ferritic stainless steel plate with high surface quality and excellent corrosion resistance. The mirror surface BA product is easy to produce. This material can also improve the texture of the material and improve the wrinkling of the material after deformation. It has excellent anti-wrinkle resistance to cold deformation and is suitable for automotive exteriors with high surface quality requirements. Decorative bright strips (pieces), furniture decorative bright strips, etc.
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[0046] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.
[0047] Table 3 shows the weight percentages of the chemical components of the high surface quality ferritic stainless steel sheets of the following examples. Smelted according to the ratio of chemical composition shown in Table 3, after casting, surface grinding, heating, hot rolling, annealing, pickling, first cold rolling and BA bright annealing, second cold rolling and BA bright annealing After cooling and flattening, the ferritic stainless steel plate with high surface quality is obtained; wherein, during the smelting process, the slag basicity is controlled at 1.5 to 2.5, and ferrosilicon or silicon-manganese alloy with an aluminum content of less than 1.0% is used for deoxidation; In the pouring step, the steel ingot or billet is poured under the condition of no oxidation protection; in the surface grinding step, the obtained steel...
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Abstract
The invention discloses a high-surface quality ferrite stainless steel plate and a manufacturing method thereof. The high-surface quality ferrite stainless steel plate comprises, by weight, less than or equal to 0.03% of C, 0.20 to 1.0% of Si, less than or equal to 1.0% of Mn, less than or equal to 0.03% of P, less than or equal to 0.01% of S, 16 to 20% of Cr, 0.75 to 2.0% of Mo, 0.42 to 0.7% of Nb, less than or equal to 0.03% of N, less than or equal to 0.005% of Al, less than or equal to 0.005% of O and the balance Fe and unavoidable impurities, wherein based on Nb content, C content and N content respectively represented by Nb, C and N, Nb-20*C-7*N is greater than or equal to 0.15% and less than or equal to 0.7% and 1.2*C+N is less than or equal to 0.04%. Through smelting, hot rolling, two-rolling process cold rolling, bright annealing and flattening, the high-surface quality ferrite stainless steel plate which is a high-glossiness high-brightness low-roughness high-surface quality mirror material is obtained, has excellent corrosion resistance, cold deformation wrinkling resistance, high yield strength and high surface hardness and is suitable for automobile outer-decoration bright strips (pieces) and furniture decoration bright strips having high surface quality requirements.
Description
technical field [0001] The present invention relates to a ferritic stainless steel plate, in particular to a high surface quality ferritic stainless steel plate with high gloss, high brightness, low roughness, corrosion resistance, and cold deformation wrinkling resistance and its manufacture The method, the surface gloss at 20° angle is more than 1000, the surface roughness is less than 0.060 μm, the pitting corrosion potential is more than 298mv, and the surface roughness evaluation index Pt value obtained after 15% pre-stretching is less than 15 μm. It is suitable for automotive exterior decorative bright strips (pieces), furniture decorative bright strips, etc. with high surface quality requirements. Background technique [0002] With the development of the national economy, the automobile industry and home decoration industry have also developed vigorously. The sharp increase in automobile production and sales has also stimulated the expansion of the scale of automobile...
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