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Critical solid solution and critical cooling aging and annealing composite heat treatment method

A composite heat treatment and solution heat treatment technology, which is used in heat treatment equipment, heat treatment process control, manufacturing tools, etc., can solve the problems of poor heating reliability of heat treatment equipment, poor discoloration and corrosion resistance, and low service life of high-temperature components. The effect of solid solution and aging strengthening phase, improving the ability to resist discoloration and corrosion, and meeting the performance requirements

Pending Publication Date: 2022-04-29
山西柴油机工业有限责任公司
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Problems solved by technology

It can solve the existing traditional mainstream austenitic stainless steel solid solution and aging heat treatment problems such as poor quality stability, low qualified product rate, low hardness, low mechanical properties and poor consistency, poor resistance to discoloration and corrosion, long heating time, low efficiency, and heat treatment problems. Poor heating reliability of equipment, low service life and high cost of high-temperature components, etc.

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  • Critical solid solution and critical cooling aging and annealing composite heat treatment method
  • Critical solid solution and critical cooling aging and annealing composite heat treatment method
  • Critical solid solution and critical cooling aging and annealing composite heat treatment method

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Embodiment Construction

[0052] In order to make the purpose, content and advantages of the present invention clearer, the specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings of the embodiments.

[0053] In the present invention, the present invention provides a composite heat treatment method of critical solution and critical cooling aging and annealing, said method comprising "a critical solution heat treatment method", "a critical cooling aging heat treatment method" and "a critical solution heat treatment method" A critical annealing heat treatment method "continuously using composite composition" a critical solution and critical cooling aging and annealing composite heat treatment method; Critical cooling and aging heat treatment, and finally the third part of critical annealing heat treatment is carried out continuously.

[0054] In the present invention, the first part of the critical solution heat trea...

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Abstract

The invention provides a critical solid solution and critical cooling aging and annealing composite heat treatment method. The method comprises a critical solid solution heat treatment process and a critical cooling aging and annealing composite heat treatment process. According to the scheme, the problems that existing austenitic stainless steel heat treatment is poor in quality stability, low in qualified rate, low in hardness, low in mechanical property, poor in consistency, poor in discoloration and corrosion resistance, long in heating time, low in efficiency, poor in heating reliability of heat treatment equipment, short in service life of high-temperature components, high in cost and the like can be solved.

Description

technical field [0001] The invention relates to the technical field of material heat treatment, in particular to a composite heat treatment method of critical solid solution, critical cooling, aging and annealing. 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 (only limited dissolution and precipitation of alloy element strengthening phases, poor heat treatment processability), therefore, austenitic stainless steel It is extremely difficult to greatly ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/78C21D6/02C21D1/26C21D11/00
CPCC21D1/78C21D6/02C21D1/26C21D11/00C21D2211/001
Inventor 李志广王俭赵伟范玉树殷彬栋孔冰
Owner 山西柴油机工业有限责任公司
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