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Super-hard copper-containing martensite antibiotic stainless steel

An antibacterial stainless steel and stainless steel technology, applied in the field of antibacterial stainless steel, can solve the problems of low hardness, low hardness and limited application of stainless steel, and achieve the effect of superior antibacterial properties

Inactive Publication Date: 2013-03-27
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to meet this demand, various antibacterial stainless steels have emerged on the market, and their antibacterial properties are improved by adding silver, copper, Ti, rare earth and other alloying elements with bactericidal functions to them. They are mainly divided into ferritic antibacterial stainless steel, austenitic stainless steel Antibacterial stainless steel, antibacterial martensitic stainless steel, among which ferritic and austenitic antibacterial stainless steel are widely used, have successfully developed ferritic and austenitic antibacterial stainless steel, and have been used in sanitary ware, food containers and other industries, Martensitic antibacterial stainless steel has limited applications due to its low hardness. Although patents JP8104952 and CN101205592 have introduced martensitic stainless steel, due to the low hardness of stainless steel, industrialization has not been realized.

Method used

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  • Super-hard copper-containing martensite antibiotic stainless steel
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  • Super-hard copper-containing martensite antibiotic stainless steel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In terms of weight percentage, the chemical composition is: 0.8%C, 17%Cr, 3.0%Mo, 0.1%V, 2.0%W, 0.5%Ni, 3.5%Cu, 1.0%RE, 0.035%S, 0.01%P, 2.0% other impurity elements, the rest is Fe stainless steel vacuum induction furnace smelting, and then electroslag remelting to prepare metal ingots. The ingot was forged at 950°C to form a steel plate with a thickness of 20 mm, and then subjected to spheroidizing annealing at 850°C for 8 hours. Each steel plate was heated at 950° C. and hot-rolled to form a steel plate with a thickness of 3 mm. The steel plate is heated at 700°C for 60 minutes, pickled with 3% dilute nitric acid, and then cold-rolled to produce a steel plate with a thickness of 0.5mm.

[0034] The produced steel plate is heated at 1050°C for 20 minutes in a nitrogen atmosphere, then quenched in oil, and then tempered at 450°C for 2 hours to obtain the product.

Embodiment 2

[0036]In terms of weight percentage, the chemical composition is: 1.2%C, 18%Cr, 1.0%Mo, 0.6%V, 1.0%W, 3.0%Ni, 2.5%Cu, 0.1%RE, 0.025%S, 0.02%P, 1.0% other impurity elements, the rest is Fe stainless steel is smelted by medium frequency induction furnace, and then electroslag remelted to prepare metal ingots. The ingot was forged at 1000°C to form a steel plate with a thickness of 100mm, and then subjected to spheroidizing annealing at 900°C for 18 hours. Each steel plate was heated at 900° C. and hot-rolled to form a steel plate with a thickness of 4 mm. The steel plate is heated at 850°C for 40 minutes, pickled with 3% dilute nitric acid, and then cold-rolled to produce a steel plate with a thickness of 1.5mm.

[0037] The produced steel plate is heated and kept at 1020°C for 60 minutes in an argon atmosphere, and then quenched in oil. After quenching, it is cryogenically treated with liquid nitrogen at -196°C for 5 hours, and then tempered at 500°C for 0.5 hours to obtain th...

Embodiment 3

[0039] In terms of weight percentage, the chemical composition is: 1.0%C, 16%Cr, 2.0%Mo, 1.0%V, 3.0%W, 1.7%Ni, 3.0%Cu, 0.6%RE, 0.005%S, 0.03%P, 0.1% other impurity elements, the rest is Fe stainless steel vacuum induction furnace smelting, and then electroslag remelting to prepare metal ingots. The ingot was forged at 1100°C to form a steel plate with a thickness of 80 mm, and then subjected to spheroidizing annealing at 820°C for 24 hours. Each steel plate was heated at 1050° C. and hot-rolled to form a steel plate with a thickness of 5 mm. The steel plate is heated and kept at 900°C for 30 minutes, pickled with 3% dilute nitric acid, and then cold-rolled to produce a steel plate with a thickness of 2mm.

[0040] The produced steel plate is heated and kept at 1000°C for 30 minutes in a nitrogen atmosphere, then quenched in oil, and then tempered at 465°C for 1 hour to obtain the product.

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Abstract

The invention relates to super-hard copper-containing martensite antibiotic stainless steel. The stainless steel comprises the following chemical components by weight percent: 0.8-1.2% of C, 16-18% of Cr, 1.0-3.0% of Mo, 0.1-1.0% of V, 1.0-3.0% of W, 0.5-3.0% of Ni, 2.5-3.5% of Cu, 0.1-1.0% of Re, less than or equal to 0.035% of S, less than or equal to 0.03% of P, less than or equal to 2.0% of other impurities and the balance of Fe. The copper-containing martensite antibiotic stainless steel has good antibiotic property, and the hardness and wear resistance of the stainless steel are greatlyimproved, thereby meeting the requirement of cutters manufactured in industries such as family, medical treatment and the like on the hardness and antibiotic property of the stainless steel.

Description

technical field [0001] The invention relates to antibacterial stainless steel, in particular to a high-hardness copper-containing martensitic antibacterial stainless steel and a process for producing stainless steel plates using the stainless steel. Background technique [0002] In recent years, with the occurrence of many bacterial infection incidents around the world, the health management issues of antibacterial and antibacterial have attracted great attention from the society. The food industry, medical and health industry and even ordinary families have higher and higher hygiene requirements for daily utensils. , the demand for antibacterial products is growing. In order to meet this demand, various antibacterial stainless steels have emerged on the market, and their antibacterial properties are improved by adding silver, copper, Ti, rare earth and other alloying elements with bactericidal functions to them. They are mainly divided into ferritic antibacterial stainless ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/46C21D8/02C21D1/18C21D1/32
Inventor 赵忠魁王献忠张保议孙清洲张普庆
Owner SHANDONG JIANZHU UNIV
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