Critical solid solution and critical multiple cooling variable temperature aging and annealing composite heat treatment method

A composite heat treatment and solution heat treatment technology, which is applied in heat treatment equipment, heat treatment process control, manufacturing tools, etc., can solve the problems of poor heating reliability of heat treatment equipment, low service life of high-temperature components, and long heating time, etc., to increase solid solution Compatible with the aging strengthening phase, meeting the performance requirements and improving the effect of surface anti-deformation

Pending Publication Date: 2022-04-26
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 consistency, poor resistance to discoloration and corrosion, long heating time, low efficiency, and heat treatment problems. Poor heating reliability of equipment, low service life and high cost of high-temperature components, etc.

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  • Critical solid solution and critical multiple cooling variable temperature aging and annealing composite heat treatment method
  • Critical solid solution and critical multiple cooling variable temperature aging and annealing composite heat treatment method
  • Critical solid solution and critical multiple cooling variable temperature aging and annealing composite heat treatment method

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[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 multiple cooling, variable temperature aging and annealing, said method includes "a critical solution heat treatment method", "a critical multiple cooling variable temperature aging heat treatment method" and "A critical annealing heat treatment method" continuously uses "a composite heat treatment method of critical solid solution and critical multiple cooling, variable temperature aging and annealing"; Continuously carry out the second part of critical multiple cooling and variable temperature aging heat treatment, and finally carry out the third part of critical annealing heat treatment continuously. The firs...

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Abstract

The invention provides a critical solid solution and critical multiple cooling variable temperature aging and annealing composite heat treatment method. The method comprises a critical solid solution heat treatment process and a critical multiple-cooling variable-temperature aging and annealing 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 multiple cooling, variable temperature aging and annealing. Background technique [0002] The heat treatment principles of austenitic stainless steel and alloy structural steel (see GB / T3077, etc.) 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 The hardness (or mechanical properties) is greatly improved by quenching and tempering heat treatment; while austenitic stainless steel cannot undergo high-temperature austenite transformation under high temperature conditions (only limited dissolution and precipitation of alloying element strengthening phases, poor heat treatment process) Therefore, it is extremely difficult for austen...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D1/78C21D1/30C21D6/02C21D11/00
CPCC21D1/785C21D1/30C21D6/02C21D11/00C21D2211/001
Inventor 李志广高勇刘继强陈森王志斌谢华
Owner 山西柴油机工业有限责任公司
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