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Martensitic stainless steel surface hardening agent as well as preparation method and application method thereof

A martensitic stainless steel, application method technology, applied in the direction of metal material coating process, coating, solid diffusion coating, etc., can solve the problem that the surface hardness can not meet the wear resistance requirements, it is difficult to meet the high wear resistance, etc. Little change in hardness, effect of increasing wear resistance

Inactive Publication Date: 2020-08-28
无锡连枝横科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, after research and testing, it is found that the surface hardness of martensitic stainless steel after nitriding treatment is about 1000HV, which is difficult to meet the requirements of high wear resistance.
At the same time, martensitic stainless steel is subjected to metal infiltration process alone. After testing, it is found that the surface hardness cannot meet the higher-end wear resistance requirements.

Method used

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  • Martensitic stainless steel surface hardening agent as well as preparation method and application method thereof
  • Martensitic stainless steel surface hardening agent as well as preparation method and application method thereof

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Embodiment 1

[0038] Embodiment 1: A surface hardener for martensitic stainless steel, calculated in parts by weight: 20-30 parts of borax molten salt, 10-16 parts of boron powder, and 5-8 parts of carbon quantum dots.

[0039] The preparation method of martensitic stainless steel surface hardener comprises the following steps

[0040] S1 mixing carbon quantum dots and borax molten salt to obtain mixture A;

[0041] S2. Add boron powder to the mixture A to obtain a surface hardener for martensitic stainless steel.

[0042] The surface hardening method for martensitic stainless steel of the present embodiment comprises the following steps:

[0043] A1. Clean the martensitic stainless steel to remove surface oil and impurities;

[0044] A2. Place the martensitic stainless steel matrix in a high-temperature martensitic stainless steel hardener, and the metal ions in the borax molten salt react with the carbon and nitrogen atoms in the martensitic stainless steel matrix to diffuse in the mart...

Embodiment 2

[0051] Embodiment 2: A surface hardener for martensitic stainless steel, calculated in parts by weight: 20 parts of borax molten salt, 10 parts of boron powder, and 5 parts of nitrogen-doped carbon quantum dots.

[0052] The preparation method of martensitic stainless steel surface hardener comprises the following steps

[0053] S1. Preparation of carbon quantum dots: using citric acid chloride as carbon source and polyethyleneimine as nitrogen-doped molecules for molecular curing;

[0054] S2. Mix and stir the carbon quantum dots and borax molten salt to obtain a mixture A;

[0055] S3. Add boron powder to the mixture A to obtain a surface hardener for martensitic stainless steel.

[0056] The surface hardening method for martensitic stainless steel of the present embodiment comprises the following steps:

[0057] A1. Clean the martensitic stainless steel substrate to remove surface oil and impurities;

[0058] A2. Place the martensitic stainless steel substrate in a high-...

Embodiment 3

[0065] Embodiment 3: A surface hardener for martensitic stainless steel, calculated in parts by weight: 30 parts of borax molten salt, 10 parts of boron powder, and 8 parts of carbon quantum dots.

[0066] The preparation method of martensitic stainless steel surface hardener comprises the following steps

[0067] S1. Preparation of carbon quantum dots: using citric acid chloride as carbon source and polyethyleneimine as nitrogen-doped molecules for molecular curing;

[0068] S2. Mix and stir the carbon quantum dots and borax molten salt to obtain a mixture A;

[0069] S3. Add boron powder to the mixture A to obtain a surface hardener for martensitic stainless steel.

[0070] The surface hardening method for martensitic stainless steel of the present embodiment comprises the following steps:

[0071] A1. Clean the martensitic stainless steel substrate to remove surface oil and impurities;

[0072] A2. Place the martensitic stainless steel matrix in a high-temperature marten...

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Abstract

The invention relates to the technical field of metal surface treatment, and in particular relates to a martensitic stainless steel surface hardening agent as well as a preparation method and an application method of the martensitic stainless steel surface hardening agent. The technical key points are as follows: the martensitic stainless steel surface hardening agent comprises the following components in parts by weight: 20-30 parts of borax molten salt, 10-16 parts of boron powder and 5-8 parts of carbon quantum dots. Martensitic stainless steel is subjected to composite treatment by combining metal cementation treatment with an ion nitriding technology, so that the surface hardness of the martensitic stainless steel can reach 1500-2000 HV, and meanwhile, the core hardness of the martensitic stainless steel is not greatly changed, i.e., the surface wear resistance is improved while the core toughness is maintained.

Description

technical field [0001] The invention relates to the technical field of metal surface treatment, in particular to a martensitic stainless steel surface hardener and a preparation method and an application method thereof. Background technique [0002] Martensitic stainless steel has been widely used in industry, civil, national defense and other fields due to its advantages of good strength, plasticity, toughness, and good cold and hot pressure processing performance. However, due to the disadvantages of low surface hardness and poor wear resistance, martensitic stainless steel cannot generally be used to make sliding friction parts, and its wider use is limited. Based on the fact that friction and wear occur on the surface of the material, studies have shown that the wear resistance of martensitic stainless steel can be effectively improved by means of surface technology. The selection of appropriate surface treatment technology is of great significance for expanding the app...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/58C23C8/52C23C8/38C21D1/18
CPCC21D1/18C23C8/38C23C8/52C23C8/58
Inventor 李小鹏任超
Owner 无锡连枝横科技有限公司
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