Heat treatment deformation control method for 23Co14Ni12Cr3MoE steel large part

A technology for heat treatment deformation and large parts, which is applied in the field of heat treatment deformation control of large parts of 23Co14Ni12Cr3MoE steel, can solve the problems of burns, easy occurrence of vibration lines, and scrapped parts, and achieves the effect of eliminating time interval, reducing quenching stress and changing stress distribution.

Inactive Publication Date: 2020-11-13
SHENYANG AIRCRAFT CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, problems such as vibration marks and burns are prone to occur after heat treatment, which has a great impact on the fatigue performance of parts
If the parts are subjected to static pressure correction after heat treatment, the loading force is not well controlled, and it is easy to cause the parts to break and be scrapped due to improper

Method used

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Examples

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Example Embodiment

[0025] The following examples further illustrate the present invention, but they are not intended to limit the present invention. The following provides the specific materials used in the embodiments of the present invention and their sources. However, it should be understood that these are only exemplary and are not intended to limit the present invention. The same or similar materials as the following reagents and instruments of the type, model, quality, properties or functions can be used to implement the present invention. The experimental methods used in the following examples are conventional methods unless otherwise specified. The materials and reagents used in the following examples can be obtained from commercial sources unless otherwise specified.

[0026] Select 23Co14Ni12Cr3MoE steel large and complex parts, adopt the deformation control method of the present invention for heat treatment, and perform performance assessment on the parts after heat treatment. The techn...

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Abstract

The invention discloses a heat treatment deformation control method for a 23Co14Ni12Cr3MoE steel large part. The heat treatment deformation control method comprises the steps of stress relief tempering, gas-cooled quenching, ice-cold treatment, low-temperature tempering, correction, final tempering and the like. According to the heat treatment deformation control method, vacuum gas-cooled quenching is adopted to replace oil-cooled quenching with a relatively high cooling speed, the hardness, tensile strength, yield strength, fracture toughness and the like of the part after heat treatment allmeet the technical standard requirements, moreover, the generation of quenching stress can be reduced, the part is basically not deformed after heat treatment, and the size precision meets the designrequirements.

Description

technical field [0001] The invention belongs to the technical field of heat treatment of ultra-high-strength steel, and in particular relates to a heat treatment deformation control method for large parts of 23Co14Ni12Cr3MoE steel. Background technique [0002] 23Co14Ni12Cr3MoE steel is a high-alloy ultra-high-strength steel with ultra-high strength, good fracture toughness, high fatigue strength, excellent resistance to stress corrosion fracture and fatigue crack fracture, and has become a The preferred material for manufacturing large and complex structural parts such as aircraft landing gear and load-bearing frame beams in the aviation field. During the heat treatment process, the ultra-high-strength steel complex structural parts will inevitably be deformed under the action of thermal stress and structural stress. Especially for aircraft rods and beams with little margin, uneven wall thickness, and sharp changes in cross-sectional dimensions, deformation of the parts af...

Claims

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Application Information

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IPC IPC(8): C21D1/18C21D1/74C21D6/04B21D1/00B21D3/00
CPCB21D1/00B21D3/00C21D1/18C21D1/74C21D6/007C21D6/04
Inventor 焦清洋韩培培康冲赵博李红恩李志古立新
Owner SHENYANG AIRCRAFT CORP
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