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Martensitic stainless steel for medical surgical devices having infection resistance

A martensitic stainless steel, anti-infection technology, applied in the field of steel alloy materials, can solve the problems of short action time and high cost, and achieve the effects of low cost, improved corrosion resistance, and broad-spectrum anti-infection ability

Inactive Publication Date: 2015-12-30
XINGHUA SPECIAL STAINLESS STEEL INST OF SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional martensitic stainless steel, such as: 3Cr13, 4Cr13, 9Cr18, 7Cr17Mo, 6Cr15MoV, 7Cr17MoV, etc. have high hardness and high wear resistance, and can be used to manufacture conventional knives and scissors materials, and as medical knives and scissors. Devices, such materials must be strictly sterilized before use, but the action time is short and the cost is high

Method used

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  • Martensitic stainless steel for medical surgical devices having infection resistance

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0016] A martensitic stainless steel for medical and surgical devices with anti-infection, which has the following chemical composition and mass percentage (wt%):

[0017] Cr16.5%

[0018] C0.46%

[0019] Cu 2.86%

[0020] Mo0.8%

[0021] V0.12%

[0022] Si0.7%

[0023] S0.007%

[0024] P0.015%

[0025] Mn0.8%

[0026] Fe balance

[0027] Using the traditional conventional smelting process, pure Cu is added during the smelting process, and after being melted by comprehensive ingredients, it is cast into shape, hot forged and hot rolled, and then subjected to appropriate solid solution and aging treatment, and finally has excellent anti-infection ability. The martensitic stainless steel alloy material has a maximum quenching Rockwell hardness of 57HRC and an aging hardness of above 56HRC. After aging at 500°C for different times, the ha...

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Abstract

The invention discloses martensitic stainless steel for medical surgical devices having infection resistance. The martensitic stainless steel comprises the following components by the mass percentage: 0.40-0.60% of C, not more than 1.0% of Si, not more than 1.0% of Mn, not more than 0.03% of P, not more than 0.03% of S, 15.0-18.0% of Cr, 2.5-3.5% of Cu, 0.50-1.0% of Mo, 0.05-0.15% of V, and the balance Fe and unavoidable impurities. The alloy material is obtained by adopting a conventional smelting method, carrying out hot forging and hot rolling and then carrying out solid solution and aging treatment. The alloy material has the advantages of higher hardness and excellent wear resistance, infection resistance and corrosion resistance, can be processed into knife and scissor products with various shapes, and is applied to the field of medical surgical instruments having higher infection resistance requirements and the fields such as utensils and kitchen appliances requiring antisepsis.

Description

technical field [0001] The invention relates to a martensitic stainless steel used for anti-infection medical surgical devices, which belongs to the technical field of iron and steel alloy materials. Background technique [0002] Martensitic stainless steel is generally Cr11.5-18% according to the chromium content. It is a nickel-saving stainless steel because it does not contain nickel or only contains a small amount of nickel. Traditional martensitic stainless steel, such as: 3Cr13, 4Cr13, 9Cr18, 7Cr17Mo, 6Cr15MoV, 7Cr17MoV, etc. have high hardness and high wear resistance, and can be used to manufacture conventional knives and scissors materials, and as medical knives and scissors. Devices, such materials must be strictly sterilized before use, but the action time is short and the cost is high. Medical workers urgently need medical devices with automatic anti-infection capabilities to reduce infection links and infection rates. Contents of the invention [0003] The o...

Claims

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Application Information

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IPC IPC(8): C22C38/24
Inventor 肖学山彭伟武昭妤李钧徐裕来冉庆选张华伟
Owner XINGHUA SPECIAL STAINLESS STEEL INST OF SHANGHAI UNIV
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