Heat treatment method for improving high-temperature endurance property of GH2132 bolt

A technology of GH2132 and heat treatment method, applied in heat treatment furnaces, heat treatment equipment, furnaces, etc., can solve the problems that GH2132 bolt grain size, durability performance, and fatigue life cannot be guaranteed at the same time, so as to ensure fatigue performance and use safety, high temperature The effect of long-lasting performance improvement

Inactive Publication Date: 2016-07-06
GUIZHOU AEROSPACE PRECISION PRODS
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Problems solved by technology

[0003] The purpose of this invention is to provide a heat treatment method for improving the high-temperature durability of GH2132 bolts, so as to solve the problem that conventional heat treatment cannot guarantee the grain size and durability of GH2132 bolts at the same time Under the premise of ensuring that the grain size is qualified, the high-temperature durability of GH2132 bolts can be greatly improved, and the fatigue life of the bolts can be guaranteed.

Method used

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  • Heat treatment method for improving high-temperature endurance property of GH2132 bolt
  • Heat treatment method for improving high-temperature endurance property of GH2132 bolt

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Embodiment

[0022] The heat treatment method used in this example includes a solid solution process and two aging processes. During the specific implementation, the bolts formed by heading the head are cleaned and dried, and a double-chamber vacuum oil quenching furnace is used for solid solution. When the furnace is installed, the product is evenly spread on the oil quenching furnace tooling in a single layer, and the furnace is heated at 650°C. , heating up for 35 minutes, the heating temperature is 980°C, and the heat preservation is 90 minutes. During the heat preservation period, the vacuum degree is controlled within the range of 1.3-13Pa. After the heat preservation is over, it will be automatically released for oil cooling. Then the solid-solution bolts are cleaned and dried, and the first aging process is carried out in a single-chamber vacuum air quenching furnace. When the furnace is loaded, the product is evenly placed on the aging tooling in a single layer, put into the fur...

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Abstract

The invention discloses a heat treatment method for improving the high-temperature endurance property of a GH2132 bolt. The bolt is subjected to head forming and heading first and then subjected to solid solution treatment process; and afterwards, the processed bolt is subjected to two aging processes and finally processed to a finished product. The high-temperature endurance property of the bolt is improved sharply, and the fatigue life of the bolt can be guaranteed. According to the heat treatment method, the solid solution process and the two aging processes are adopted, so that the high-temperature endurance property of the GH2132 bolt is improved by a large margin, and the fatigue property and application security are ensured. The technical problem that grain size and high-temperature endurance cannot be guaranteed at the same time in conventional heat treatment production is accordingly solved successfully and therefore the heat treatment method can be popularized in the field of aero-engine GH2132 bolts.

Description

technical field [0001] The invention relates to a heat treatment method for improving the high-temperature durability performance of GH2132 bolts, and belongs to the technical field of heat treatment technology for GH2132 bolts of aero-engines. Background technique [0002] Modern superalloys include iron-based, nickel-based and cobalt-based superalloys, among which GH2132 is an iron-based aging precipitation hardening superalloy trial-produced in my country. This alloy has no corresponding brand in Soviet or Russian materials, and is a trial-produced material by imitating American engines, which is equivalent to American A286 superalloy. The material has high yield strength, durable and creep strength below 650°C, and has good processing plasticity and satisfactory welding performance. In China, this alloy has been widely used in the aviation field, and is suitable for manufacturing high-temperature load-bearing parts of aero-engines that work for a long time below 650°C, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21D9/00C21D1/00
CPCC21D9/0093C21D1/00
Inventor 樊开伦裴烈勇陈涛刘勇德徐韬
Owner GUIZHOU AEROSPACE PRECISION PRODS
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