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

An annealing heat treatment and aging heat treatment technology, applied in the field of material heat treatment, can solve the problems of low qualified product rate, low efficiency and high cost

Pending Publication Date: 2021-04-30
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

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

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Embodiment Construction

[0058] 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.

[0059] Such as figure 2 As shown, the embodiment of the present invention proposes a method of critical solution and critical temperature drop, temperature rise, variable temperature aging and annealing heat treatment, including: step 21, critical solution heat treatment process; and step 22, critical drop temperature rise temperature variable temperature aging and annealing heat treatment process.

[0060] The process of the meth...

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Abstract

The invention provides a critical solid solution and critical cooling and heating variable-temperature aging and annealing heat treatment method. The critical solid solution and critical cooling and heating variable-temperature aging and annealing heat treatment method comprises a critical solid solution heat treatment process and a critical cooling and heating variable-temperature aging and annealing heat treatment process. According to the scheme, the method has technical feasibility, process adaptability, quality reliability, economic rationality and use safety, the advantages can be effectively adopted, disadvantages of a traditional mainstream heat treatment method of austenitic stainless steel are avoided, the special heat treatment problems of poor quality stability, low qualified rate, low hardness, low mechanical property, poor consistency, poor discoloration and corrosion resistance, long heating time, low efficiency, poor heating reliability of heat treatment equipment, short service life of high-temperature parts, high cost and the like of austenitic stainless steel heat treatment are solved, the method is particularly suitable for the technical field of hot working engineering such as smelting, steel rolling, forging and heat treatment of austenitic stainless steel involved in steel mills and manufacturers.

Description

technical field [0001] The invention relates to the technical field of heat treatment of materials, in particular to a heat treatment method of critical solid solution, critical temperature drop, temperature rise, 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 st...

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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 李志广李京殷彬栋李晓霞张建颖李全平
Owner 山西柴油机工业有限责任公司
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