Antibacterial stainless steel production method based on general 430 ferritic stainless steel
A technology of antibacterial stainless steel and production method, which is applied in the direction of heat treatment equipment, heat treatment process control, manufacturing tools, etc., can solve the problems that the process is difficult to realize and cannot realize industrialized large-scale production, and achieve the effect of broad application prospects
Inactive Publication Date: 2007-06-13
BAOSHAN IRON & STEEL CO LTD
View PDF0 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, antibacterial treatment is required for cold-rolled steel coils in large-scale production, which is difficult to achieve in terms of technology. Japan has a unique feature in this area, and it has not been able to realize industrialized large-scale production.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] Antibacterial stainless steel materials are obtained through smelting, casting, hot rolling, annealing, antibacterial treatment, cold rolling, annealing, and antibacterial treatment. The composition is shown in Table 1, and the obtained steel plates are subjected to the following analysis and related inspections according to different processes.
[0021] 1. The antibacterial stainless steel material is made into diffraction and field emission electron microscope samples. From the diffraction point of view, the surface of the material has obvious diffraction Cu peaks, indicating that antibacterial Cu phases are precipitated, and Cu peaks also appear after scanning the surface and cross-section of the material after grinding, indicating that antibacterial Cu phases are precipitated in the entire matrix. The diffraction pattern is shown in Figure 1; the material is scanned by a field emission electron microscope, and it can be found that an antibacterial Cu phase appears, ...
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 relates to antibiosis stainless steel producing method based on common430 ferritic stainless steel. Its components are not more than 0.05wt% C, 0.3-0.5wt% Si, 0.35-0.6wt% Mn, 0.02wt% S, not more than 0.05wt% P, 16.5-17.2wt% Cr, 1.3-1.6wtwt% Cu, not more than 0.02wt% N, rest Fe and unavoidable impurity. The method includes the following steps: smelting; hot rolling; annealing antibiosis processing; annealing at 870-1000 degree centigrade; holding time as 2-4 minutes per 1mm thickness; cooling to 500-800 degree centigrade; holding and heating to 500-800 degree centigrade; preserving heat for 1-200 minutes; cooling to room temperature to make antibiosis phase separate out once again to ensure antibiosis performance. The invention not only has better antibiosis effect that the antibiosis phase distributes in the whole basal body and its particle size is 50-300nm, but also can ensure material fundamental characteristics.
Description
technical field [0001] The invention relates to a method for manufacturing antibacterial stainless steel, in particular to changing ordinary 430 ferritic stainless steel into antibacterial stainless steel with good antibacterial performance, and making the basic performance of the material not lower than ordinary 430 ferritic stainless steel. Background technique [0002] In the entire stainless steel consumer market, the 300 series accounts for more than 70%, of which ferrite accounts for about 20%. In recent years, with the shortage of nickel ore in the world, the price has continued to rise, resulting in continuous increase in costs. The 400 series is less affected in this respect because it does not contain nickel. The traditional 400 series representative steel types include 430 (18% Cr) of the ferritic system and 410 and 420 (13% Cr) of the martensitic system. 430 is the most used, and its advantages are: low price, low thermal expansion coefficient, and better chlori...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/20C21D1/26C21D11/00
Inventor 李步明余海峰毛惠刚
Owner BAOSHAN IRON & STEEL CO LTD