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Low-cost and high-performance titanium alloy short process forging process

A titanium alloy, high-performance technology, applied in the field of low-cost, high-performance titanium alloy short-flow forging technology, can solve problems such as unreported, and achieve the effects of low cost, good fracture toughness, and excellent machining performance

Active Publication Date: 2019-12-20
AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, domestic research on low-cost titanium alloys mainly focuses on the influence of forging process and heat treatment process on its microstructure and mechanical properties. see the report

Method used

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  • Low-cost and high-performance titanium alloy short process forging process
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  • Low-cost and high-performance titanium alloy short process forging process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment is to obtain TC32 low-cost, high-performance titanium alloy forging billet through 5 fire times forging process, specifically comprises the following steps:

[0029] Step 1: Heat the TC32 low-cost high-performance titanium alloy ingot that has passed the chemical composition inspection to 1180°C, and perform one-shot forging. This fire is forged with three piers and three pulls in the streamline direction of the ingot, and the single pier is coarsely deformed. The weight is 40%, the reduction per hammer is 15%, and the reduction rate is 12mm / s. The final forging temperature is 900°C to obtain a forged billet after billet opening;

[0030] Step 2: Heat the forging billet described in Step 1 to 1050°C, and perform one-time forging. The direction of piering in this fire is perpendicular to the direction of the streamline of the forging billet. The coarse deformation is 50%, the reduction per hammer is 25%, and the reduction rate is 10mm / s. The final forgi...

Embodiment 2

[0037] This embodiment is a processing method for obtaining a TC32 low-cost high-performance titanium alloy forging billet through a 4-fire forging process, which specifically includes the following steps:

[0038] Step 1: Heat the TC32 low-cost high-performance titanium alloy ingot that has passed the chemical composition inspection to 1150°C, and perform one-fire forging. This fire is forged with three piers and three pulls in the streamline direction of the ingot, and the single pier is coarsely deformed. The amount is 50%, the reduction amount per hammer is 10%, and the reduction rate is 20mm / s. The final forging temperature is 860°C to obtain a forged billet after billet opening;

[0039] Step 2: Heat the forging billet described in Step 1 to 1030°C, and perform one-time forging. The direction of piering in this fire is perpendicular to the direction of the streamline of the forging billet. The rough deformation is 65%, the reduction per hammer is 15%, and the reduction ...

Embodiment 3

[0046] This embodiment is a processing method for obtaining a TC32 low-cost high-performance titanium alloy forging billet through a 5-fire forging process, which specifically includes the following steps:

[0047] Step 1: Heat the TC32 low-cost high-performance titanium alloy ingot that has passed the chemical composition inspection to 1160°C, and perform one-shot forging. This fire is forged with three piers and three pulls in the streamline direction of the ingot, and the single pier is coarsely deformed. The amount is 60%, the reduction amount per hammer is 5%, and the reduction rate is 10mm / s. The final forging temperature is 900°C to obtain a forged billet after billet opening;

[0048] Step 2: Heat the forging billet described in Step 1 to 1000°C, and perform one-time forging. The direction of piering in this fire is perpendicular to the direction of the streamline of the forging billet. The coarse deformation is 40%, the reduction per hammer is 10%, and the reduction ra...

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Abstract

The invention provides a low-cost and high-performance titanium alloy short process forging process. The process includes the following steps that first, ingot casting is heated to be 1150 DEG C to 1200 DEG C, one heating number forging is conducted, and a forging stock is obtained after cogging; second, the blank obtained in the first step is heated to be 1000 DEG C to 1050 DEG C, and one heatingnumber reversing forging is conducted to obtain a forging stock; third, the blank obtained in the second step is heated to be 1000 DEG C to 1050 DEG C, and one heating number reversing forging is conducted to obtain a forging stock; and fourth, the forging stock in the third step is heated to be 30 DEG C to 50 DEG C below the beta phase transformation point temperature, and 1-3 heating number forging is conducted to obtain a forging stock with uniform structure properties. According to the low-cost and high-performance titanium alloy short process forging process, the technical problems of titanium alloy structure homogenization and fine crystallization through less forging heating numbers are successfully solved, the cost is lowered, and at the same time, the performance index of a titanium alloy is ensured.

Description

technical field [0001] The invention is a low-cost, high-performance titanium alloy short-flow forging process, which belongs to the technical field of titanium alloy material processing. Background technique [0002] With the development of industries such as aerospace, armored vehicles, and ships, and the design and use requirements of military equipment for high comprehensive performance and lightweight, titanium alloys have high specific strength, high toughness, high impact resistance, and excellent corrosion resistance. Comprehensive performance, the demand has risen sharply. However, on the one hand, due to the scarcity of titanium resources in my country and the large amount of energy consumed in the production of sponge titanium, the price of raw materials will gradually rise with the expansion of demand; on the other hand, the cost of titanium alloy processing materials is relatively high, such as titanium alloy for aviation From casting ingots to qualified bars, i...

Claims

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Application Information

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IPC IPC(8): C22F1/18
CPCC22F1/183
Inventor 商国强朱知寿王新南李明兵
Owner AVIC BEIJING INST OF AERONAUTICAL MATERIALS
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