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Copper/cerium-containing antimicrobial stainless steel and preparation method thereof

An antibacterial stainless steel and stainless steel technology, applied in the field of stainless steel and its preparation, antibacterial stainless steel and its preparation, can solve the problem that the antibacterial effect needs to be further improved, and achieve the effect of large utilization value, improved corrosion resistance and dense steel structure

Inactive Publication Date: 2015-04-01
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN201210479673.0, Austenitic antibacterial stainless steel with antibacterial properties obtained by adding copper and its preparation method, the antibacterial material function is realized through the antibacterial copper alloy phase, but the antibacterial effect needs to be further improved, and the comprehensive performance of stainless steel needs to be improved at the same time to well meet real needs

Method used

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  • Copper/cerium-containing antimicrobial stainless steel and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0020] In this example, see figure 1 , a preparation method of antibacterial stainless steel containing copper and cerium, comprising the following steps:

[0021] a. Smelting to prepare stainless steel primary billet: First, put the alloying element raw materials weighed according to the formula into the crucible in the induction furnace, fully stir and mix, and heat the alloying element raw materials to 1500 ℃ in the induction furnace and maintain a constant temperature until the sample It is completely melted in the crucible, smelted, and then water-cooled to room temperature to prepare the stainless steel initial billet. : 0.030%, Cr: 17.5%, Ni: 11%, Cu: 0.5%, Ce: 0.01%, the balance is Fe and inevitable impurities;

[0022] b. Solid solution strengthening of stainless steel billet: After smelting and preparing stainless steel preliminary billet, heat the stainless steel preliminary billet to 1180℃ in an induction furnace for solution treatment. The solution treatment time...

Embodiment 2

[0026] This embodiment is basically the same as the first embodiment, and the special features are:

[0027] In this embodiment, a method for preparing an antibacterial stainless steel containing copper and cerium includes the following steps:

[0028] a. Smelting to prepare stainless steel initial billet: Weigh 304 type austenitic stainless steel, add copper and cerium elements according to its chemical composition in weight percentage, and make the addition amount of Cu: 0.5%, Ce: 0.01%, according to The 304-type austenitic stainless steel, copper, and cerium element materials after formula weighing are put into the crucible in the induction furnace, fully stirred and mixed, and the alloying element raw materials are heated to 1500 ℃ in the induction furnace and kept at a constant temperature until the sample is in the crucible. The interior is completely melted, smelted, and then water-cooled to room temperature to prepare stainless steel primary billets;

[0029] b. Solid...

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Abstract

The invention discloses a copper / cerium-containing antimicrobial stainless steel and a preparation method thereof. The copper / cerium-containing antimicrobial stainless steel comprises the following chemical components in percentage by weight: at most 0.08% of C, at most 1% of Si, at most 2.00% of Mn, less than 0.045% of P, less than 0.030% of S, 17.5-20.0% of Cr, 8-11% of Ni, 0.5-2.8% of Cu, 0.01-0.45% of Ce, and the balance of Fe and inevitable impurities. The stainless steel is molten in an induction furnace after smelting, and is subjected to aging high-temperature diffusion heat treatment composed of 20-minute 1180 DEG C solid solution and 1-hour 685 DEG C thermal insulation so as to precipitate the antimicrobial phase epsilon-Cu and Ce, thereby endowing the stainless steel with antimicrobial property. The steel grade has stainless steel performance and broad-spectrum antibacterial property; the corrosion resistance, wear resistance, strength, toughness, oxidation resistance and other comprehensive properties of the stainless steel are improved; and the production technique is simple, has great utilization value in industry, and is suitable for industrial production.

Description

technical field [0001] The invention relates to a stainless steel and a preparation method thereof, in particular to an antibacterial stainless steel and a preparation method thereof, which are applied in the technical field of stainless steel production and manufacture. Background technique [0002] With the development of the economy, people's consumption level and quality of life are constantly improving, and people's concept of public health and personal safety has also undergone profound changes. The demand and requirements for antibacterial materials are getting higher and higher, and the emergence of antibacterial stainless steel caters to people's new requirements for antibacterial materials. [0003] There are many ways to prepare antibacterial stainless steel, such as austenitic, ferrite, and martensitic antibacterial stainless steel with silver-added copper, but due to the low yield of silver, it leads to high cost, complicated heat treatment process, and easy pas...

Claims

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Application Information

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IPC IPC(8): C22C38/58C22C38/42
Inventor 付建勋朱玉员张华张明徐杰刘思雨刘宏强李徐
Owner SHANGHAI UNIV
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