Ferritic stainless steel and preparation method thereof
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A technology of stainless steel plate and ferrite, which is applied in the direction of metal rolling, etc., can solve the problems that the performance of ferritic stainless steel is not obvious and not achieved.
Inactive Publication Date: 2008-04-09
SHANXI TAIGANG STAINLESS STEEL CO LTD
View PDF0 Cites 15 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
However, the improvement of the performance of ferritic stainless steel by traditional technology is not significant, and the effect close to that of 304 austenitic steel has not yet been achieved.
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
[0027] The ultra-pure ferritic stainless steel plate thickness of the present embodiment is 1.0mm, wide 1200mm, and its chemical composition (percentage by weight) is:
[0028] C 0.008% Si 0.30% Mn 0.10% Cr 23.10%
[0029] P 0.035% S 0.004% Ni 0.32% Cu 0.20%
[0030] Mo 0.95% N 0.0110% Nb+Ti 0.30%
[0031] The rest is Fe and unavoidable impurities. (In this example, the content of Ni and Cu is low, which can generally be considered as residual elements brought in by scrap steel, etc.)
Embodiment 2
[0033] The ultra-pure ferritic stainless steel plate thickness of the present embodiment is 0.8mm, wide 1200mm, and its chemical composition (percentage by weight) is:
[0034] C 0.007% Si 0.25% Mn 0.35% Cr 20.20%
[0035] P 0.025% S 0.001% Ni 1.50% Cu 0.50%
[0036] Mo 0.30% N 0.0095% Nb+Ti 0.40%
[0037] The rest is Fe and unavoidable impurities.
Embodiment 3
[0039] The ultrapure ferritic stainless steel plate thickness of the present embodiment is 1.2mm, wide 1250mm, and its chemical composition (percentage by weight) is:
[0040] C 0.010% Si 0.40% Mn 0.50% Cr 19.80%
[0041] P 0.018% S 0.003% Ni 2.15% Cu 1.15%
[0042] Mo 1.95% N 0.0075% Nb+Ti 0.55%
[0043] The rest is Fe and unavoidable impurities.
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
Login to view more
Abstract
The invention is a ferrite stainless steel plate and a preparation method. The stainless steel plate consists of (in weight percentage): C is less than or equal to 0.03, Si is less than or equal to 1.00, Mn is less than or equal to 1.00, Cr:15-25, P is less than or equal to 0.035, S is less than or equal to 0.03, N is less than or equal to 0.03, 0.20 is less than or equal to Cu and Cu is less than or equal to1.5%, Ti+Nb0.2+4 multiplied by (C+N)-0.75, the rest being Fe and unavoidable impurity. The preparation method for the stainless steel plate is as follows: (1) the casting billet is smelted, the casting billet comprises (in weight percentage):C is less than or equal to 0.03, Si is less than or equal to 1.00, Mn is less than or equal to 1.00, Cr:15-25, P is less than or equal to 0.035, S is less than or equal to 0.03, N is less than or equal to 0.03, 0.20 is less than or equal to Cu and Cu is less than or equal to1.5%, Ti+Nb 0.2+4 multiplied by (C+N)-0.75, the rest being Fe and unavoidable impurity;(2) the casting billet is heated;(3) hot the casting billet is hot-rolled; (4)cold roll and anneal. The ferrite stainless steel plate has the anti-corrosion performance and the weldability close to the anti-corrosion performance and the weldability of stainless steel 304, the preparation method of the ferrite stainless steel can be just general preparation method.
Description
technical field [0001] The invention relates to a ferritic stainless steel plate and a preparation method thereof. Background technique [0002] Stainless steel is a special material, which has the characteristics of both functional materials and structural materials. Excellent performance is widely used in many fields of industry and civil. The consumption of stainless steel in the world is also increasing year by year. By 2006, the output of stainless steel in the world reached 28.4 million tons. 304 austenitic stainless steel has become the most widely used and most used steel grade among stainless steels due to its excellent corrosion resistance and ease of processing. Although 304 stainless steel has excellent properties, the precious metal nickel content is as high as 9%, so the price is high. In recent years, with the increase of stainless steel production, nickel consumption has also increased rapidly, making nickel resources more and more tense, nickel prices hav...
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
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.