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Preparation method of antibacterial austenitic stainless steel band

A technology of austenitic stainless steel and stainless steel, which is applied in the field of steel material processing, can solve the problems such as the difficulty of mastering the best composition and the influence of hot working properties of stainless steel, and achieve good broad-spectrum antibacterial properties, excellent mechanical properties and corrosion resistance. lasting effect

Inactive Publication Date: 2014-03-26
WUXI XINDAZHONG STEEL SHEET
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method has an ideal effect, but it is not easy to grasp the best composition of Cu-Ag-Zn ternary master alloy, and Zn will also have a bad influence on the hot workability of stainless steel

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A method for preparing an antibacterial austenitic stainless steel strip, the stainless steel is composed of the following components in weight percentage: C: 0.05, Mn: 4.8, Cr: 14.5, Ni: 6.5, Cu: 1.0, Ag: 0.6, Si : 1.2, S≤0.025, P≤0.060, Ce: 0.7, Ti: 0.2, and the rest are Fe and unavoidable impurity elements. The preparation method includes the following steps:

[0021] (1) Smelting: Ferroalloy raw materials such as steel scrap, sponge iron, ferromanganese, ferrochromium, ferronickel, and ferrosilicon are smelted by the smelting process of electric arc furnace + converter + external refining, and the harmful elements such as S and P are ensured during the smelting process Within the above range, in the later stage of smelting, under the premise of ensuring other components, copper-silver master alloy is added to ensure that the content of copper and silver meets the above-mentioned range of components, and then treated with ferrocerium and ferrotitanium for 10 minutes, ...

Embodiment 2

[0027] A method for preparing an antibacterial austenitic stainless steel strip, the stainless steel is composed of the following components in weight percentage: C: 0.08, Mn: 4.4, Cr: 15.5, Ni: 5.5, Cu: 1.2, Ag: 0.4, Si : 1.4, S≤0.025, P≤0.060, Ce: 0.5, Ti: 0.4, and the rest are Fe and unavoidable impurity elements. The preparation method includes the following steps:

[0028] (1) Smelting: Ferroalloy raw materials such as steel scrap, sponge iron, ferromanganese, ferrochromium, ferronickel, and ferrosilicon are smelted by the smelting process of electric arc furnace + converter + refining outside the furnace, and harmful elements such as S and P are ensured during the smelting process Within the above range, in the later stage of smelting, under the premise of ensuring other components, copper-silver master alloy is added to ensure that the content of copper and silver meets the above-mentioned range of components, and then treated with ferrocerium and ferrotitanium for 15 mi...

Embodiment 3

[0034] A method for preparing an antibacterial austenitic stainless steel strip, the stainless steel is composed of the following components in weight percentage: C: 0.07, Mn: 4.6, Cr: 15.0, Ni: 6.0, Cu: 1.1, Ag: 0.5, Si : 1.3, S≤0.025, P≤0.060, Ce: 0.6, Ti: 0.3, and the rest are Fe and unavoidable impurity elements. The preparation method includes the following steps:

[0035] (1) Smelting: Ferroalloy raw materials such as steel scrap, sponge iron, ferromanganese, ferrochromium, ferronickel, and ferrosilicon are smelted by the smelting process of electric arc furnace + converter + external refining, and the harmful elements such as S and P are ensured during the smelting process Within the above range, in the later stage of smelting, under the premise of ensuring other components, copper-silver master alloy is added to ensure that the content of copper and silver meets the above-mentioned range of components, and then treated with ferrocerium and ferrotitanium for 12 minutes, ...

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PUM

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Abstract

The invention discloses a preparation method of an antibacterial austenitic stainless steel band. The stainless steel consists of the following components in percentage by weight: 0.05-0.08% of C, 4.4-4.8% of Mn, 14.5-15.5% of Cr, 5.5-6.5% of Ni, 1.0-1.2% of Cu, 0.4-0.6% of Ag, 1.2-1.4% of Si, less than or equal to 0.025% of S, less than or equal to 0.060% of P, 0.5-0.7% of Ce, 0.2-0.4% of Ti and the balance of Fe and unavoidable impurity elements. The preparation method comprises the following steps: (1) smelting; (2) cogging; (3) hot rolling; (4) cold rolling and annealing; (5) solid solution and aging treatment: firstly preserving heat at 1,200-1,220 DEG C for 1-2 hours, and performing air cooling to room temperature; then performing aging treatment: preserving heat at 620-630 DEG C for 6-8 hours, and performing air cooling to room temperature.

Description

technical field [0001] The invention relates to the technical field of steel material processing, in particular to a method for preparing an austenitic stainless steel strip. Background technique [0002] Antibacterial stainless steel is to add an appropriate amount of metal elements (such as copper and silver) with antibacterial effect to stainless steel. After the steel produced is subjected to antibacterial heat treatment, the antibacterial phase rich in antibacterial elements is precipitated from the matrix, uniformly dispersed, and exposed to stainless steel. The antibacterial metal elements on the surface are dissolved in water to form hydrated ions, and then contact with bacteria, through the action of cells, damage the cell membrane, cause protein coagulation or damage its DNA, prevent the growth and reproduction of bacteria or eliminate bacteria. Antibacterial stainless steel has the advantages of stainless steel and good antibacterial performance, and can be widely...

Claims

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Application Information

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IPC IPC(8): C22C38/58C21D8/02
Inventor 周明华
Owner WUXI XINDAZHONG STEEL SHEET
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