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Stainless steel for medical device and preparation method of stainless steel

A medical device, stainless steel technology, applied in the field of medical supplies, can solve the problems of poor mechanical properties and process properties, low high temperature oxidation resistance and corrosion resistance, etc., and achieve excellent mechanical properties, good toughness and plasticity

Active Publication Date: 2015-02-25
XUZHOU NAILI MACROMOLECULE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the medical devices currently on the market have poor mechanical and process properties, high temperature oxidation resistance and low corrosion resistance.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A stainless steel for medical equipment, comprising the following chemical components in parts by mass: 0.2 parts of carbon C, 19 parts of chromium Cr, 1 part of molybdenum Mo, 0.5 parts of silicon Si, 0.3 parts of nickel Ni, 0.04 parts of copper Cu, titanium Ti 0.1 part, niobium Nb 0.07 part, hafnium Hf 0.01 part, arsenic As 0.02 part, sulfur S 0.008 part, phosphorus P 0.005 part, iron Fe 95 parts.

[0014] A preparation method of stainless steel for medical equipment, comprising the steps of: first carbon C, chromium Cr, molybdenum Mo, silicon Si, nickel Ni, copper Cu, titanium Ti, niobium Nb, hafnium Hf, arsenic As, sulfur S, phosphorus P and Fe are mixed, batched, smelted, and poured into steel ingots; then the steel ingots are heated to 1100°C and forged into forgings; the forgings are heated to 1100°C, rolled into bars, and air-cooled to room temperature; machined , that is, a medical device is obtained.

Embodiment 2

[0016] A stainless steel for medical devices, comprising the following chemical components in parts by mass: 0.5 parts of carbon C, 26 parts of chromium Cr, 5 parts of molybdenum Mo, 0.9 parts of silicon Si, 0.6 parts of nickel Ni, 0.08 parts of copper Cu, titanium Ti 0.3 parts, niobium Nb 0.13 parts, hafnium Hf 0.04 parts, arsenic As 0.06 parts, sulfur S 0.015 parts, phosphorus P 0.01 parts, iron Fe 106 parts.

[0017] A preparation method of stainless steel for medical equipment, comprising the steps of: first carbon C, chromium Cr, molybdenum Mo, silicon Si, nickel Ni, copper Cu, titanium Ti, niobium Nb, hafnium Hf, arsenic As, sulfur S, phosphorus P and Fe are mixed, batched, smelted, and poured into steel ingots; then the steel ingots are heated to 1200°C and forged into forgings; the forgings are heated to 1200°C, rolled into bars, and air-cooled to room temperature; machined , that is, a medical device is obtained.

Embodiment 3

[0019] A stainless steel for medical equipment, comprising the following chemical components in parts by mass: 0.3 parts of carbon C, 20 parts of chromium Cr, 2 parts of molybdenum Mo, 0.6 parts of silicon Si, 0.4 parts of nickel Ni, 0.05 parts of copper Cu, titanium Ti 0.15 parts, niobium Nb 0.09 parts, hafnium Hf 0.02 parts, arsenic As 0.03 parts, sulfur S 0.01 parts, phosphorus P 0.008 parts, iron Fe 98 parts.

[0020] A preparation method of stainless steel for medical equipment, comprising the steps of: first carbon C, chromium Cr, molybdenum Mo, silicon Si, nickel Ni, copper Cu, titanium Ti, niobium Nb, hafnium Hf, arsenic As, sulfur S, phosphorus P and Fe are mixed, batched, smelted, and poured into steel ingots; then the steel ingots are heated to 1100°C and forged into forgings; the forgings are heated to 1100°C, rolled into bars, and air-cooled to room temperature; machined , that is, a medical device is obtained.

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PUM

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Abstract

The invention relates to stainless steel for a medical device and a preparation method of the stainless steel for the medical device. The stainless steel for the medical device comprises the following chemical components in parts by mass: 0.2-0.5 part of C, 19-26 parts of Cr, 1-5 parts of Mo, 0.5-0.9 part of Si, 0.3-0.6 part of Ni, 0.04-0.08 part of Cu, 0.1-0.3 part of Ti, 0.07-0.13 part of Nb, 0.01-0.04 part of Hf, 0.02-0.06 part of As, 0.008-0.015 part of S, 0.005-0.01 part of P and 95-106 parts of Fe. The stainless steel provided by the invention has excellent mechanical property, processing property, high temperature oxidation resistance and corrosion resistance and has good toughness and plasticity, so that the stainless steel provided by the invention is an excellent stainless steel material for the medical device.

Description

technical field [0001] The invention relates to the field of medical supplies, in particular to a stainless steel for medical equipment and a preparation method thereof. Background technique [0002] Medical devices refer to instruments, equipment, utensils, in vitro diagnostic reagents and calibrators, materials, and other similar or related items that are directly or indirectly used on the human body, including required computer software; their effects are mainly obtained through physical means, not Acquired through pharmacological, immunological or metabolic means, or although these means are involved, they only play an auxiliary role. [0003] Stainless steel for medical devices needs to have excellent corrosion resistance, oxidation resistance, mechanical properties, toughness, plasticity, weldability and other properties. However, the medical devices currently on the market have poor mechanical properties and process properties, and low high-temperature oxidation res...

Claims

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Application Information

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IPC IPC(8): C22C38/50C22C33/04
CPCC21D8/065C22C33/04C22C38/02C22C38/18C22C38/40C22C38/42C22C38/44C22C38/48C22C38/50
Inventor 金仲恩全春兰张帆
Owner XUZHOU NAILI MACROMOLECULE TECH CO LTD
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