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Fastener for aviation and preparation method of fastener

A fastener and aviation technology, applied in the field of alloys, can solve the problems that alloys cannot meet the design requirements of fasteners, insufficient corrosion resistance, poor oxidation resistance, etc., achieve good high temperature corrosion resistance, increase stability, The effect of improving the performance of hydrogen embrittlement resistance

Inactive Publication Date: 2021-05-07
江苏新核合金科技有限公司
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Problems solved by technology

However, in the actual production process, it is found that the alloys produced by the existing technology often cannot meet the design requirements of fasteners.
Existing fastener products will need to be replaced after being used for a period of time due to insufficient corrosion resistance, and poor oxidation resistance, poor stability, poor plasticity, and low strength, and there are often serious safety hazards

Method used

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  • Fastener for aviation and preparation method of fastener
  • Fastener for aviation and preparation method of fastener
  • Fastener for aviation and preparation method of fastener

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preparation example Construction

[0021] The present invention provides a kind of preparation method of aviation fastener, and this preparation method comprises the following steps:

[0022] Step (1), raw material preparation: batching according to the design composition, and all raw materials need to be baked and degassed, wherein, the design composition of the raw materials is as follows: C is ≤0.08%, Mn is ≤2.0%, and P is ≤0.03%, S ≤0.02%, Si ≤1.0%, Ni 24.0-27.0%, Cr 13.5-16.0%, Mo 1.0-1.5%, Ti 1.75-2.3%, Al ≤0.4%, V is 0.1-0.5%, B is 0.001-0.010%, Cu is ≤0.25%, and the balance is Fe. Specifically, for example, according to the procurement technical requirements and procurement plan, purchase the required smelting raw materials from qualified suppliers, and require the product quality certificate of the raw materials. The acceptance of raw materials is carried out in accordance with the provisions of the "Enterprise Product Technical Specifications", and the raw materials must meet the technical requiremen...

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Abstract

The invention provides a fastener for aviation and a preparation method of the fastener. Design components of raw materials comprise, by weight percent, not larger than 0.08% of C, not larger than 2.0% of Mn, not larger than 0.03% of P, not larger than 0.02% of S, not larger than 1.0% of Si, 24.0%-27.0% of Ni, 13.5%-16.0% of Cr, 1.0%-1.5% of Mo, 1.75%-2.3% of Ti, not larger than 0.4% of Al, 0.1%-0.5% of V, 0.001%-0.010% of B, not larger than 0.25% of Cu and the balance Fe. The fastener not only has good strength and hardness, but also has good high-temperature corrosion resistance, good processing property and high thermal strength, and can completely meet the requirements of the force-bearing part fastener for aviation for materials.

Description

technical field [0001] The invention relates to the field of alloys, in particular to an aviation fastener and a preparation method thereof. Background technique [0002] Fasteners are a type of basic mechanical parts that are used for fastening connections and are widely used, and fasteners are a product with a wide range of applications. In the use of fasteners, fasteners are often faced with harsh working environments, such as high temperature and corrosion. Especially for fasteners used in the aerospace field, materials are required to have high strength and also meet oxidation resistance and corrosion resistance. However, in the actual production process, it is found that the alloys produced by the existing technology often cannot meet the design requirements of fasteners. Existing fastener products will need to be replaced after a period of use due to insufficient corrosion resistance, and have poor oxidation resistance, poor stability, poor plasticity, and low stren...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/44C22C38/50C22C38/46C22C38/54C22C38/58C22C38/02C22C38/06C22C38/04C22C38/42C22C33/04C22B9/18C21D8/06
CPCC21D8/065C22B9/18C22C33/04C22C38/02C22C38/04C22C38/06C22C38/42C22C38/44C22C38/46C22C38/50C22C38/54C22C38/58Y02P10/25
Inventor 华大凤华鹏王树平刘威陈杰
Owner 江苏新核合金科技有限公司
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