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Critical solid solution and critical heating aging heat treatment method

A technology of aging heat treatment and solution heat treatment, which is applied in the field of material heat treatment, can solve the problems of poor resistance to discoloration and corrosion, poor heating reliability of heat treatment equipment, and low service life of high-temperature components, so as to improve surface resistance to discoloration and corrosion, increase solid Dissolution and aging strengthening phase, the effect of meeting the performance requirements

Pending Publication Date: 2021-04-23
山西柴油机工业有限责任公司
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Problems solved by technology

[0017] The technical problem to be solved by the present invention is to provide a critical solid solution and critical heating aging heat treatment method, which fundamentally solves the problem of poor quality stability, low qualified product rate, low hardness, low mechanical properties and problems of existing austenitic stainless steel heat treatment. Poor consistency, poor resistance to discoloration and corrosion, long heating time, low efficiency, poor heating reliability of heat treatment equipment, low service life of high-temperature components, and high cost" and other unique heat treatment technical problems of "one long, one high, four differences and five lows"

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  • Critical solid solution and critical heating aging heat treatment method

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Embodiment Construction

[0049] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0050] Such as figure 2 As shown, the embodiment of the present invention proposes a critical solution and critical heating aging heat treatment method, including: step 21, critical solution heat treatment process and step 22, critical heating aging heat treatment process;

[0051] The process of the method is as follows: the first part of critical solution heat treatment is firstly carried out, and finally the second part of temp...

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Abstract

The invention provides a critical solid solution and critical heating aging heat treatment method. The critical solid solution and critical heating aging heat treatment method comprises a critical solid solution heat treatment process and a critical heating aging heat treatment process. The scheme has technical feasibility, process adaptability, quality reliability, economic rationality and use safety, and can effectively enhance the advantages and avoid the disadvantages of a traditional mainstream heat treatment method of austenitic stainless steel; the problems that existing austenitic stainless steel heat treatment is poor in quality stability, low in qualified product rate, low in hardness, low in mechanical property, poor in consistency, poor in discoloration and corrosion resistance, long in heating time, low in efficiency, heat treatment equipment is poor in heating reliability, high-temperature components are short in service life, the cost is high, and other special heat treatment technology problems are fundamentally solved. The method is particularly suitable for the technical field of hot working engineering such as smelting, steel rolling, forging and heat treatment related to the austenitic stainless steel in steel mills and manufacturers.

Description

technical field [0001] The invention relates to the technical field of material heat treatment, in particular to a critical solid solution and critical heating aging heat treatment method. Background technique [0002] The heat treatment principles of austenitic stainless steel and alloy structural steel are completely different: alloy structural steel can undergo high-temperature austenite transformation under high temperature conditions (good heat treatment process), therefore, alloy structural steel is very easy to pass through quenching and tempering heat treatment methods The hardness (or mechanical properties) is greatly improved; while austenitic stainless steel cannot undergo high-temperature austenite transformation under high temperature conditions (poor heat treatment process), therefore, it is extremely difficult for austenitic stainless steel to undergo heat treatment methods such as solid solution and aging. Amplitude increases hardness (or mechanical propertie...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/78C21D6/00
CPCC21D1/78C21D6/00C21D2211/001
Inventor 李志广秦新锋李京孔冰李全平李晓霞
Owner 山西柴油机工业有限责任公司
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