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Antibacterial stainless steel composite powder, antibacterial stainless steel and preparation method thereof

An antibacterial stainless steel and composite powder technology, applied in the field of antibacterial stainless steel composite powder, antibacterial stainless steel and its preparation field, can solve the problems of insufficient antibacterial performance of stainless steel, uneven distribution of silver phase, poor antibacterial performance, etc., and achieve the cost of manufacturing and use. Low, uniform distribution of silver phase, the effect of improving antibacterial properties

Inactive Publication Date: 2019-07-23
依波精品(深圳)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide an antibacterial stainless steel composite powder, which aims to solve the problem that the preparation of antibacterial stainless steel by powder metallurgy method in the prior art easily leads to uneven distribution of silver phase and serious segregation of silver, so that stainless steel is antibacterial The performance is not stable enough, the technical problem of poor antibacterial performance

Method used

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  • Antibacterial stainless steel composite powder, antibacterial stainless steel and preparation method thereof
  • Antibacterial stainless steel composite powder, antibacterial stainless steel and preparation method thereof
  • Antibacterial stainless steel composite powder, antibacterial stainless steel and preparation method thereof

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preparation example Construction

[0047] as attached figure 1 Shown, the embodiment of the present invention also provides a kind of preparation method of antibacterial stainless steel, comprises the following steps:

[0048] S10. Obtain the formula amount of the above-mentioned antibacterial stainless steel composite powder, and mix uniformly to obtain a uniformly mixed antibacterial stainless steel composite powder;

[0049] S20. Pressing the uniformly mixed antibacterial stainless steel composite powder into an antibacterial stainless steel product green body;

[0050] S30. Sintering the green body of the antibacterial stainless steel product to obtain an antibacterial stainless steel product.

[0051] The preparation method of the antibacterial stainless steel provided by the embodiment of the present invention uses the above antibacterial stainless steel composite powder as a raw material, and the antibacterial stainless steel product can be obtained by mixing, pressing and sintering. Since the preparat...

Embodiment 1

[0072] Taking mass fraction as unit, choose 17 parts of particle diameter as D90=22um, purity is more than 99.5% chromium powder, 0.5 part is 500 nanometers away from particle diameter, nanoscale silver oxide powder with purity more than 99.5%, 82.5 parts of particle diameter are D90=22um, iron powder with a purity of more than 99.5%.

[0073] Put the prepared powder into the three-dimensional mixer and mix evenly. The mixed powder is then put into a mold and a green disc is produced under cold pressing.

[0074] Put the green body into the sintering furnace, and under the protection of nitrogen protective atmosphere, firstly keep it warm at 400°C for 30 minutes, so that the silver oxide will decompose and react to produce pure silver. Then continue to heat up to the sintering temperature of 1200° C., and sinter the product for 2 hours to obtain the initial product workpiece.

Embodiment 2

[0076] Taking mass fraction as unit, choose 17 parts of particle diameter as D90=22um, purity is more than 99.5% chromium powder, 0.5 part is 500 nanometers away from particle diameter, nanoscale silver oxide powder with purity more than 99.5%, 82.5 parts of particle diameter are D90=22um, iron powder with a purity of more than 99.5%.

[0077] Put the prepared powder into the three-dimensional mixer and mix evenly. The mixed powder is then put into a mold and cold pressed to produce a green door handle.

[0078] Put the green body into the sintering furnace, and under the protection of argon, first keep it warm at 400°C for 30 minutes, so that the silver oxide will decompose and react to produce pure silver. Then continue to heat up to the sintering temperature of 1200° C., and sinter the product for 2 hours to obtain the initial product workpiece.

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Abstract

The invention belongs to the technical field of stainless steel, and particularly relates to antibacterial stainless steel composite powder. The antibacterial stainless steel composite powder is prepared from the following components in percentage by mass (based on 100% in total): 0.2%-1% of nano-scale silver oxide, 16%-18% of chromium powder, 0%-1% of manganese powder, 0-0.6% of nickel powder, and 78%-83% of iron powder. According to the antibacterial stainless steel composite powder provided by the embodiment of the invention, nano-scale silver oxide powder, chromium powder, manganese powder, nickel powder and the like are added, so that homogeneous-phase distribution, in composite powder, as a result of a small particle diameter of the nano-scale silver oxide powder is easily formed while performances such as stability, oxidization resistance and corrosion resistance of stainless steel are improved, and therefore, more uniform silver-phase distribution is effectively realized, usageamount of silver is reduced, and antibacterial property of stainless steel is improved.

Description

technical field [0001] The invention belongs to the technical field of stainless steel, and in particular relates to an antibacterial stainless steel composite powder, an antibacterial stainless steel and a preparation method thereof. Background technique [0002] Stainless steel is widely used in daily production and life due to its excellent processing performance, corrosion resistance, mechanical properties and bright surface. At the same time, stainless steel is also one of the most widely used materials in the field of public health care. With the improvement of people's material and living standards, people's requirements for the environment, health and hygiene are getting higher and higher, especially when it comes to food safety, medical hygiene and other aspects. Due to the wide application of stainless steel in daily production and life, in addition to the higher and higher requirements for the mechanical properties and corrosion resistance of stainless steel, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F3/16C22C33/02C22C38/04C22C38/18C22C38/40
CPCB22F1/0003B22F3/16C22C32/0026C22C33/0285C22C38/04C22C38/18C22C38/40
Inventor 钟飞余鹏刘立涛邬治平黄明欣赵均辉
Owner 依波精品(深圳)有限公司
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