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Aging heat treatment method for critical solid solution as well as critical temperature rise and temperature fall

A technology of aging heat treatment and solution heat treatment, which is applied in the field of material heat treatment, can solve the problems of poor heating reliability of heat treatment equipment, poor resistance to discoloration and corrosion, and low service life of high-temperature components, so as to increase solid solution and aging strengthening phase, improve Anti-discoloration and corrosion ability, the effect of meeting the performance requirements

Pending Publication Date: 2021-05-11
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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  • Aging heat treatment method for critical solid solution as well as critical temperature rise and temperature fall
  • Aging heat treatment method for critical solid solution as well as critical temperature rise and temperature fall
  • Aging heat treatment method for critical solid solution as well as critical temperature rise and temperature fall

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Embodiment Construction

[0049] 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.

[0050] Such as figure 2 As shown, the embodiment of the present invention proposes a critical solution and critical heating and cooling aging heat treatment method, including: step 21, critical solution heat treatment process; and step 22, critical heating and cooling aging heat treatment process.

[0051] The process of the method is as follows: firstly carry out the first part of critical solution heat treatment, then carry out ...

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Abstract

The invention provides an aging heat treatment method for critical solid solution as well as critical temperature rise and temperature fall. The aging heat treatment method comprises a critical solid solution heat treatment process, a critical temperature rise aging heat treatment process and a critical temperature fall aging heat treatment process. The aging heat treatment method provided by the invention has technical feasibility, process adaptability, quality reliability, economic rationality and use safety; the advantages and disadvantages of a traditional mainstream heat treatment method for austenitic stainless steel can be effectively enhanced and avoided; the specific heat treatment technology problems that in the existing austenitic stainless steel heat treatment process, the quality stability is low, the rate of qualified products is low, the hardness is relatively low, the mechanical performance is low, the consistency is poor, the discoloration and corrosion resisting capacity is poor, the heating time is long, the efficiency is low, the heating reliability of heat treatment equipment is poor, the service life of high-temperature components is short, and the cost is high can be fundamentally solved; and the aging heat treatment method is particularly applicable to the technical fields of hot-working engineering such as smelting, steel rolling, forging and heat treatment of austenitic stainless steel in steel mills and manufacturing plants.

Description

technical field [0001] The invention relates to the technical field of material heat treatment, in particular to a critical solid solution and critical heating and cooling aging 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 (poor heat treatment process), therefore, it is extremely difficult for austenitic stainless steel to undergo heat treatment methods such as solid solution and aging. Amplitude increases hardness (or mechanic...

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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 李志广刘继强王东军孔冰谢华冯文静
Owner 山西柴油机工业有限责任公司
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