Critical solid solution and critical starting low-temperature alternating aging composite heat treatment method

A composite heat treatment and solution heat treatment technology, applied in heat treatment equipment, heat treatment process control, manufacturing tools, etc., 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. The surface has the ability to resist discoloration and corrosion, increase the solid solution and aging strengthening phase, and meet 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

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  • Critical solid solution and critical starting low-temperature alternating aging composite heat treatment method
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  • Critical solid solution and critical starting low-temperature alternating aging composite heat treatment method

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Embodiment Construction

[0049] 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.

[0050] In the present invention, a composite heat treatment method of critical solid solution and critical starting low temperature alternating aging, said method includes "a critical solution heat treatment method" and "a critical starting low temperature alternating aging heat treatment method" consecutively "A composite heat treatment method of critical solid solution and critical starting at low temperature alternating aging" using a composite composition; Variable aging heat treatment. The first part of the critical solution heat treatment process: relying on the critical solution heat treatment process, including firstly heating the austenitic stainless steel from room temperature to the preheating temperature ...

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Abstract

The invention provides a critical solid solution and critical-beginning low-temperature alternating aging composite heat treatment method. The method comprises a critical solid solution heat treatment process and a critical low-temperature alternating aging 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, low in cost and the like can be solved. The heating reliability of heat treatment equipment is poor; the service life of a high-temperature component is short; the cost is high; and the like.

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 and critical starting low temperature alternating aging. 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 diff...

Claims

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Application Information

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IPC IPC(8): C21D1/78C21D6/02C21D11/00
CPCC21D1/78C21D6/02C21D11/00C21D2211/001
Inventor 李志广李京张建颖王俭马强陈森
Owner 山西柴油机工业有限责任公司
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