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Copper-containing antibacterial stainless steel and preparation method thereof

An antibacterial stainless steel, an unavoidable technology, applied in the field of materials, can solve the problems of affecting the comprehensive performance, affecting the antibacterial effect, easy cracking of the surface, etc., and achieve the effect of improving mechanical properties, convenient operation and low cost

Active Publication Date: 2013-09-04
宁波市博祥新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, antibacterial stainless steel with copper added in the smelting process has obvious antibacterial effect and long antibacterial life, but its surface is easy to crack during rolling, which affects its overall performance
Another example is antibacterial stainless steel, because of the passivation film on the surface of stainless steel, it is difficult for copper to dissolve on its surface, which affects the antibacterial effect
Another example is a nano-precipitated phase martensitic antibacterial stainless steel disclosed in the Chinese patent application document (publication number: CN102168226A), which contains Ni: 5.8% by weight, Mo: 0.15-4.90% by weight, Cu: 0.65-4.60 % by weight, W: 0.15-6.00% by weight and other more expensive alloying elements, resulting in higher production costs

Method used

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  • Copper-containing antibacterial stainless steel and preparation method thereof
  • Copper-containing antibacterial stainless steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Batching: batching according to the mass percentage of each alloy composition of the copper-containing antibacterial stainless steel in Example 1 of Table 1.

[0049] Melting: Increase the temperature in the smelting furnace to 1680°C, first melt the ingredients except copper, then add copper after the raw materials are melted and heat up rapidly to obtain a melt, and stir until the melt is uniform.

[0050] Ultrasonic treatment: Add phosphorus-containing modifier to the melt for modification treatment, and then introduce an ultrasonic generator with an output power of 600W for ultrasonic treatment, and the ultrasonic action time is 0.80s.

[0051] Casting molding: The ultrasonically treated melt is poured into molding, and then annealed and forged. Before forging, the poured casting is fully heated first, and then forged. The forging temperature is 1160°C for the initial forging and 850°C for the final forging.

[0052] Heat treatment: Heat treatment is carried out on...

Embodiment 2

[0055] Batching: batching according to the mass percentage of each alloy composition of the copper-containing antibacterial stainless steel in Example 2 of Table 1.

[0056] Melting: Increase the temperature in the smelting furnace to 1690°C, first melt the ingredients except copper, then add copper after the raw materials are melted and heat up rapidly to obtain a melt, and stir until the melt is uniform.

[0057] Ultrasonic treatment: add a phosphorus-containing modifier to the melt for modification treatment, and then introduce an ultrasonic generator with an output power of 580W for ultrasonic treatment, and the ultrasonic action time is 0.20s.

[0058] Casting molding: The ultrasonically treated melt is poured into molding, and then annealed and forged. Before forging, the poured casting is fully heated first, and then forged. The forging temperature is 1140°C for the initial forging and 870°C for the final forging.

[0059] Heat treatment: heat treatment is performed on...

Embodiment 3

[0062] Batching: batching according to the mass percentage of each alloy component of the copper-containing antibacterial stainless steel in Example 3 of Table 1.

[0063] Smelting: Increase the temperature in the smelting furnace to 1700°C, first melt the ingredients except copper, then add copper after the raw materials are melted and heat up rapidly to obtain a melt, and stir until the melt is uniform.

[0064] Ultrasonic treatment: add a phosphorus-containing modifier to the melt for modification treatment, and then introduce an ultrasonic generator with an output power of 620W for ultrasonic treatment, and the ultrasonic action time is 1.2s.

[0065] Casting molding: The ultrasonically treated melt is poured into molding, and then annealed and forged. Before forging, the poured casting is fully heated first, and then forged. The forging temperature is 1170°C for the initial forging and 900°C for the final forging.

[0066] Heat treatment: heat treatment is performed on t...

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Abstract

The invention relates to copper-containing antibacterial stainless steel and a preparation method thereof, and belongs to the technical field of materials. The copper-containing antibacterial stainless steel comprises the following components in percentage by weight: 0.08 to 0.25 percent of C, 11.00 to 30.00 percent of Cr, less than or equal to 2.80 percent of Si, 0.40 to 3.20 percent of Cu, less than or equal to 2.00 percent of Mn, less than or equal to 1.10 percent of Zn, less than or equal to 3.20 percent of Al, less than or equal to 0.30 percent of N, one or more of the following alloy elements: Ti, Nb, Mo, V, Zr, Sn and Sc (the content of each alloy element is less than or equal to 1 percent), and the balance of Fe and inevitable impurities. The preparation method comprises the following steps of: preparing materials; smelting; performing ultrasonic treatment after modification; moulding by casting; and performing heat treatment comprising solution treatment and aging treatment. The copper-containing antibacterial stainless steel prepared by the method has low production cost and good antibacterial effect and mechanical property.

Description

technical field [0001] The invention relates to a stainless steel, in particular to a copper-containing antibacterial stainless steel and a preparation method thereof, belonging to the technical field of materials. Background technique [0002] In order to meet people's increasing demand for antibacterial and antibacterial products such as kitchen utensils, public facilities, and medical equipment, researchers have developed various stainless steel products with antibacterial properties through alloying, surface coating or infiltration treatment. Antibacterial stainless steel has the dual characteristics of structural materials and antibacterial functional materials. characteristics of drug resistance. Antibacterial stainless steel is one of the important development directions of antibacterial functional materials. [0003] Antibacterial stainless steel has developed rapidly, but there are still many problems. For example, the antibacterial stainless steel with copper ad...

Claims

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Application Information

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IPC IPC(8): C22C38/38C22C38/34C22C38/20C22C33/04C21D6/00
Inventor 梅海滨
Owner 宁波市博祥新材料科技有限公司
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