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Critical solid solution and critical multi-cooling variable-temperature aging and annealing heat treatment method

An annealing heat treatment and solution heat treatment technology, applied in the field of material heat treatment, can solve the problems of poor heating reliability of heat treatment equipment, poor discoloration and corrosion resistance, poor quality stability, etc. Hot and cold working stress and deformation, the effect of increasing solid solution and aging strengthening phase

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

Solve the existing austenitic stainless steel heat treatment problems of 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, poor heating reliability of heat treatment equipment and high temperature elements The unique heat treatment technical problems of "one long, one high, four different and five low" such as low device service life and high cost

Method used

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  • Critical solid solution and critical multi-cooling variable-temperature aging and annealing heat treatment method
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  • Critical solid solution and critical multi-cooling variable-temperature aging and annealing heat treatment method

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Embodiment Construction

[0057] 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.

[0058] Such as figure 2 As shown, the embodiment of the present invention proposes a method of critical solution and critical multiple cooling, variable temperature aging and annealing heat treatment, including: step 21, critical solution heat treatment process; and step 22, critical multiple cooling and variable temperature aging and annealing heat treatment process.

[0059] The process of the method is as follows: firstly, the...

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Abstract

The invention provides a critical solid solution and critical multi-cooling variable-temperature aging and annealing heat treatment method. The method comprises a critical solid solution heat treatment process and a critical multi-cooling variable-temperature aging and annealing 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, so that the problems that the 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 are fundamentally solved. The critical solid solution and critical multi-cooling variable-temperature aging and annealing heat treatment 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 heat treatment method for critical solid solution and critical multiple cooling, variable temperature 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 extreme...

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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 李志广王东军靳峰李姝颖郭彦斌王安俊
Owner 山西柴油机工业有限责任公司
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