Critical solid solution and high-temperature-starting multi-time variable-temperature alternating aging and annealing heat treatment method
An annealing heat treatment and aging technology, applied in the field of material heat treatment, can solve the problems of poor resistance to discoloration and corrosion, poor heating reliability of heat treatment equipment, and low service life of high-temperature components, so as to reduce residual cold and hot processing stress and deformation, increase solid Dissolution and aging strengthening phase, the effect of meeting the performance requirements
Pending Publication Date: 2021-03-26
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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[0059] 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.
[0060] Such as figure 2 As shown, the embodiment of the present invention proposes a method of critical solid solution and multi-temperature alternating aging and annealing heat treatment starting from high temperature, including: step 21, critical solution heat treatment process; and step 22, critical starting at high temperature for multiple times Variable temperature alternating aging and annealing heat treatment process.
[0...
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The invention provides a critical solid solution and high-temperature-starting multi-time variable-temperature alternating aging and annealing heat treatment method. The critical solid solution and high-temperature-starting multi-time variable-temperature alternating aging and annealing heat treatment method comprises a critical solid solution heat treatment process and a critical high-temperature-starting multi-time variable-temperature alternating aging and annealing heat treatment process. The scheme provided by the invention has technical feasibility, process adaptability, quality reliability, economic rationality and use safety, can effectively develop the advantages and avoid the disadvantages of traditional major heat treatment methods of austenitic stainless steel, and special heattreatment technical the problems, namely being long in one aspect, high in one aspect, poor in four aspects and low in five aspects, that existing austenitic stainless steel heat treatment is poor inquality stability, low in the rate of qualified products, low in hardness, low in mechanical property, poor in consistency, poor in discoloration and corrosion resistance, long in heating time and low in efficiency, heat treatment equipment is poor in heating reliability, high-temperature components and parts are short in service life, and the cost is high, are fundamentally solved. The method isparticularly 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 for critical solid solution and multiple temperature changes starting from high temperature and alternating 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, austeniti...
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IPC IPC(8): C21D1/78C21D6/00
CPCC21D1/78C21D6/00
Inventor 李志广靳峰赵伟李姝颖白泽兵李荣军
Owner 山西柴油机工业有限责任公司
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