Critical solid solution and critical repeated cooling 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, and low service life of high-temperature components, so as to increase the solid solution and aging strengthening phase, improve the The ability to resist discoloration and rust, and the effect of meeting the performance requirements

Pending Publication Date: 2021-05-14
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 repeated cooling aging and annealing heat treatment method
  • Critical solid solution and critical repeated cooling aging and annealing heat treatment method
  • Critical solid solution and critical repeated cooling aging and annealing heat treatment method

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[0054] 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.

[0055] Such as figure 2 As shown, the embodiment of the present invention proposes a critical solution and critical multiple cooling aging and annealing heat treatment method, including: step 21, critical solution heat treatment process; and step 22, critical multiple cooling aging and annealing heat treatment process.

[0056] The process of the method is as follows: the first part of critical solution heat treatment is firstly c...

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Abstract

The invention provides a critical solid solution and critical repeated cooling aging and annealing heat treatment method which comprises a critical solid solution heat treatment process and a critical repeated cooling aging and annealing heat treatment process. The scheme of the invention has technical feasibility, process adaptability, quality reliability, economic reasonability and use safety, can effectively enhance the advantages and avoid the disadvantages of a conventional mainstream heat treatment method of austenitic stainless steel, fundamentally solves the "one-long one-high four-poor five-low" special heat treatment technical difficult problems of "poor quality stability, low rate of qualified products, low hardness, low mechanical property, poor consistency, poor discoloration and rust corrosion resistance, long heating time, low efficiency, poor heating reliability of heat treatment equipment and low service life and high cost of a high-temperature component" of existing austenitic stainless steel heat treatment, and is particularly suitable for the technical field of heat working engineering such as smelting, steel rolling, forging, heat treatment and the like 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 multiple cooling aging and annealing 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 (only limited dissolution and precipitation of alloy element strengthening phases, poor heat treatment processability), therefore, austenitic stainless steel It is extremely difficult to greatly in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/78C21D1/26C21D6/00
CPCC21D1/26C21D1/78C21D6/00C21D2211/001
Inventor 李志广陈森靳峰高勇杨文影孙柱
Owner 山西柴油机工业有限责任公司
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