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Modification method for steel component

A technology for parts and steel, applied in the field of electrochemical surface modification of stainless steel, can solve problems such as poor wear resistance and affecting service life, and achieve the effect of improving service life

Inactive Publication Date: 2017-01-11
张家港市丰乐汽车设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing stainless steel parts have special requirements for their surface wear resistance, and poor wear resistance will affect their service life

Method used

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Examples

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Embodiment Construction

[0015] The present invention is further illustrated by the following examples: According to the following examples, the present invention can be better understood. However, those skilled in the art can easily understand that the specific material ratios, process conditions and results described in the examples are only used to illustrate the present invention, and should not and will not limit the present invention described in the claims.

[0016] This embodiment discloses a method for modifying a steel part. The material of the steel part is as follows: the chemical composition includes 0.45% Al, 0.6% Cr, 0.12% C and the balance is Fe.

[0017] A method for modifying steel parts, comprising the steps of:

[0018] (1) Carburizing and quenching steel parts. The carburizing temperature of the carburizing and quenching treatment is 900°C, the carburizing time is 1.5 hours, and the quenching temperature is 800°C.

[0019] (2) Preheat the steel parts at 300°C for 30 minutes;

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Abstract

The invention discloses a modification method for a steel component. The modification method comprises the steps that firstly, the steel component is preheated at the temperature of 300 DEG C, and the preheating time is 30 min; secondly, salt bath nitriding is conducted at the temperature of 500 DEG C, the nitriding time is 2 h, and base salt is adopted as fused salt in the salt bath process; thirdly, salt bath oxidization is conducted at the temperature of 320 DEG C, the oxidization time is 20 min, and adjusting salt is adopted as fused salt in the salt bath process; and fourthly, cooling is conducted, and then oxidization is conducted for 20 min at the temperature of 420 DEG C. Through the modification method, a compound layer with good tolerance can be formed on the surface of the steel component, and accordingly the service life of the steel component is prolonged.

Description

technical field [0001] The application belongs to the technical field of metal surface treatment, in particular to a method for electrochemical surface modification of stainless steel. Background technique [0002] Metal surface treatment is to modify the metal surface by physical or chemical methods. In order to improve the corrosion resistance of stainless steel products, it is often necessary to use metal surface treatment technology to modify stainless steel products. The conventional surface treatment methods for stainless steel include anodic passivation, chemical oxidation and pre-oxidation. [0003] Existing stainless steel parts have special requirements for their surface wear resistance, and poor wear resistance will affect their service life. Contents of the invention [0004] The object of the present invention is to provide a method for modifying steel parts to overcome the deficiencies in the prior art. [0005] To achieve the above object, the present inve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/58C23F17/00C22C38/18
Inventor 赵英
Owner 张家港市丰乐汽车设备有限公司