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A heat treatment method for stabilizing the elastic force of a high-strength alloy spring

A technology for stabilizing heat treatment and high-strength alloys. It is applied in the field of high-strength alloy processing. It can solve problems such as spring force value attenuation and mechanical seal leakage, and achieve the effects of reducing stress attenuation, increasing service life, and improving heat treatment quality.

Active Publication Date: 2021-07-20
SHENYANG AEROSPACE XINGUANG GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the above-mentioned products all have a certain storage period, the spring is released to a certain extent due to compression deformation and processing residual stress during the storage period. At the same time, the material of the spring itself also undergoes stress relaxation, and the elastic force of the spring decays under the joint action of several factors , the mechanical seal leaks

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  • A heat treatment method for stabilizing the elastic force of a high-strength alloy spring
  • A heat treatment method for stabilizing the elastic force of a high-strength alloy spring

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Embodiment

[0022] Preferred embodiments of the present invention are described below, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the scope of the present invention more clearly.

[0023] A heat treatment method for elastic force stabilization of a high-strength alloy limit spring, specifically comprising the following steps:

[0024] (1) Co-Gr-Ni alloy (named as 3J21 alloy in the national standard) wire is wound into full

[0025] A spring that meets the requirements of fixed parameters and force values; the mass percentage content of each component of the elastic alloy material is: C 0.07~0.12%, Mn 1.70~2.30%, Si ≤0.60%, P ≤0.010, S ≤0.010%, Co 39.0 ~41.0%, Cr 19.0~21.0%, Ni 14.0~21.0%, Mo 6.50~7.50%, the balance is Fe;

[0026] (2) Installation combination: place the spring in the fixing device. The structure of the fixing device is that the guide bolt 2 is set in the inner cavity of the housi...

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Abstract

The invention relates to a stabilizing heat treatment method for a spring made of a high-strength alloy material, and belongs to the technical field of high-strength alloy processing. The present invention stabilizes the limit spring of the 3J21 elastic alloy wire. Firstly, the spring is placed in a fixed structure, and is evenly heated from room temperature T1 to temperature T2 at a certain heating rate υ, and the holding time is t1, and then the power is turned off. , so that the spring naturally reaches room temperature T1 in the furnace cavity. The invention releases the internal residual stress of the spring in the working height state in the fixing device, improves the stability of the elastic force value without changing the material state, thereby meeting the use requirements of the spring for the mechanical seal structure.

Description

technical field [0001] The invention belongs to the technical field of high-strength alloy processing, and relates to the heat treatment of a Co-Gr-Ni alloy spring, and more specifically, to a heat treatment method for stabilizing the elastic force value of a Co-Gr-Ni alloy limit spring. Background technique [0002] Due to its high strength, plasticity, good mechanical properties and failure hardening properties, high-strength alloy materials have corrosion resistance and mechanical properties under high temperature conditions, and are currently commonly used in aerospace, sealing components, and ship transportation. Material. [0003] In the mechanical seal structure of aerospace or weapon products, the superalloy material spring provides a fixed release force to the seal assembly, so that there is a certain end-face specific pressure on the mechanical seal surface, so as to achieve the sealing effect of the mechanical seal surface. Since the above-mentioned products all ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/00C22C30/00
CPCC22C30/00C22F1/00
Inventor 孙建通白俊炜徐晶王聪司亮王春雷
Owner SHENYANG AEROSPACE XINGUANG GRP