Forging processing method for TC32 titanium alloy large specific bar

A TC32 and processing method technology, applied in the field of titanium alloys, can solve the problems of small structures, inability to obtain comprehensive mechanical properties of products, and high cost

Active Publication Date: 2021-04-20
湖南湘投金天钛业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Domestic titanium alloy raw materials generally have the disadvantages of long processing cycle, many fire times, and high cost.
For raw materials, too many forging fires will lead to too fine structure, and the fine structure will reduce the process window of sm

Method used

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  • Forging processing method for TC32 titanium alloy large specific bar
  • Forging processing method for TC32 titanium alloy large specific bar
  • Forging processing method for TC32 titanium alloy large specific bar

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1 (forging method of Φ210mm specification bar)

[0036] The ingot of Φ780mm specification of TC32 titanium alloy is selected, and the β transformation temperature of the ingot is 905℃. The specific forging process is as follows:

[0037] (1) Billet forging

[0038] It is completed in 2 fires. The first fire is to heat the TC32 ingot to 1150 °C for heat preservation, and it is released from the furnace for two upsetting and two pulling to the square. The second fire is heated and kept at 1080 ℃, two upsetting and two pulling forging to Bafang, the forging ratio is controlled at 9-10, and finally the height-diameter ratio of the blank is controlled to be 1.5, and air cooling is adopted after forging;

[0039] (2) Homogenization forging

[0040] First, heat the billet in step (1) to 870 ℃ for heat preservation, and then carry out one upsetting and one drawing forging to Bafang. The forging ratio is controlled at 2.1. After forging, the height-diameter ratio of t...

Example Embodiment

[0046] Example 2 (forging method of Φ380mm specification bar)

[0047] The ingot of Φ780mm specification of TC32 titanium alloy is selected, and the β transformation temperature of the ingot is 905℃. The specific forging process is as follows:

[0048] (1) Billet forging

[0049] The TC32 ingot is heated to 1150 ℃ for heat preservation, and two upsetting and two pulling are carried out to Bafang. The diameter ratio is 1.5, and air cooling is adopted after forging;

[0050] (2) Homogenization forging

[0051] Firstly, the billet in step (1) is heated to 875℃ for heat preservation, and after it comes out of the furnace, it is forged to Bafang by one upsetting and one drawing. , the time of returning to the furnace and transferring materials is not more than 120s, the holding time is controlled at 330-360min, and after the furnace is released, one upsetting and one drawing forging is performed in all directions ◇600mm, the forging ratio is controlled at 1.26, the height-diame...

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Abstract

The invention relates to the technical field of titanium alloy forging, in particular to a forging processing method for a TC32 titanium alloy large specific bar. The method comprises the steps: performing recrystallized homogenized forging after cogging forging; then performing forging at a beta transition temperature; and finally, forging a product. Tissues are regulated and controlled precisely to obtain needed mechanical properties. The consistence of flaw detection level of the bar is improved. The obtained tissues and performance are uniform, and the yield is improved.

Description

technical field [0001] The invention relates to the technical field of titanium alloys, in particular to a method for forging and processing TC32 titanium alloy large-scale rods. Background technique [0002] Due to its low density, high specific strength, good corrosion resistance, low elastic modulus, small thermal conductivity and high yield ratio, titanium alloy has been used in aviation, aerospace, shipbuilding, chemical industry, petroleum and other fields. In the field, titanium alloy is one of the main structural materials of contemporary advanced aircraft. When widely used, it is one of the notable signs of the advanced nature of the new generation of aircraft, which can greatly improve the structural weight reduction effect and safety reliability. [0003] With the development of aircraft design concepts from simple static strength to safety-life, damage-safety and the current damage tolerance design principles, titanium alloy materials are gradually shifting from...

Claims

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Application Information

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IPC IPC(8): B21J5/00B21J5/06B21J5/08B21J1/06
Inventor 朱鸿昌李超樊凯朱雪峰陈艳詹孝冬
Owner 湖南湘投金天钛业科技股份有限公司
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