A kind of stainless steel material and its preparation method and application

A stainless steel and material mixing technology, applied in the field of stainless steel tableware, can solve the problems of shortening the service life of tableware and failing to reach nickel, and achieve the effects of convenient operation, simple process, excellent corrosion resistance and mechanical strength

Active Publication Date: 2022-03-15
嘉诚(厦门)工业有限公司
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Problems solved by technology

[0005] However, because nickel has high corrosion resistance to acid and alkali, and nitrogen cannot achieve the effect of nickel, after the nickel in the above stainless steel material is completely replaced by nitrogen, although it can reduce the harm to the human body, it also shortens the life of the stainless steel. Service life of tableware made of materials

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  • A kind of stainless steel material and its preparation method and application
  • A kind of stainless steel material and its preparation method and application
  • A kind of stainless steel material and its preparation method and application

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preparation example Construction

[0052] A method for preparing a stainless steel material, comprising the steps of:

[0053] ①, mixing materials:

[0054] A1, take by weight percentage the Cr powder of 24kg, the Mn powder of 16kg, the Ti powder of 0.2kg, the Al powder of 0.1kg, the Si powder of 0.008kg, the C powder of 0.08kg and the Fe powder of 59.112kg and mix, obtain mixed powder;

[0055] B1. The mixed powder is wet-milled under the protection of argon. The wet-milling process is as follows: put the mixed powder into a ball mill tank, add absolute ethanol accounting for 1.8% of the weight of the mixed powder, vacuumize the ball mill tank and fill it with argon Gas, the ball to material weight ratio is 16:1, the ball milling speed is 250r / min, and the ball milling time is 8h;

[0056] C1. Dry the wet-milled mixed powder with a rotary evaporator at a drying temperature of 75°C and a vacuum of 0.1 MPa. After drying for 25 minutes, pulverize it and pass it through a 100-mesh sieve to obtain an alloy powder...

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Abstract

The invention relates to the technical field of stainless steel tableware, more specifically it relates to a stainless steel material and its preparation method and application. The stainless steel material is composed of the following components in weight percentage: Cr 23-25%, Mn 15-17%, N 0.4-0.6%, Ti 0.1-0.3%, Al 0.1-0.2%, Si 0.005-0.01%, C 0.06-0.09%, the balance is Fe and unavoidable impurities. In the preparation process of the stainless steel material of the present application, wet grinding is used to obtain alloy powder with uniform particle size, and then a mixed gas composed of ammonia and argon is used to realize gaseous nitrogen alloying, so as to obtain the alloy powder with a nitrogen content of 0.4-0.6%. High nitrogen steel, its preparation method has the advantages of simple process and convenient operation, and the prepared stainless steel material has excellent corrosion resistance and mechanical strength.

Description

technical field [0001] The invention relates to the technical field of stainless steel tableware, more specifically it relates to a stainless steel material and its preparation method and application. Background technique [0002] In daily life, people's diet is inseparable from tableware, and stainless steel tableware is deeply loved by people because it is easy to clean and convenient. [0003] The stainless steel grades selected for the existing stainless steel tableware are mainly SUS304 (06Cr 19 Ni 10 ) and SUS316L (022Cr 17 Ni 12 Mo 2 ), but the nickel content of these two types of materials exceeds 8%. Studies in recent years have shown that nickel will dissolve when exposed to the human body for a long time and cause harm to the human body. As a result, the restrictions on the nickel content in metal materials in various countries are becoming more and more stringent, and the best nickel content allowed in the standards is also increasing. lower. [0004] For ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C33/04C22C38/02C22C38/06C22C38/28C22C38/38B22F9/04
CPCC22C33/04C22C38/38C22C38/001C22C38/28C22C38/06C22C38/02B22F9/04B22F2009/043
Inventor 黄志辉
Owner 嘉诚(厦门)工业有限公司
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