A forging method of super-sized ti80 titanium alloy forging billet

An ultra-large-scale, titanium alloy technology, used in manufacturing tools, metal processing equipment, forging/pressing/hammer devices, etc., can solve problems such as uneven deformation of the ends and the middle, and achieve the effect of broad application prospects

Active Publication Date: 2022-07-01
西部超导材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the prior art, the present invention proposes a forging method for a super-large Ti80 titanium alloy forging billet, which can effectively solve the problems raised in the background technology, and avoid the ingot with an excessively large aspect ratio when upsetting The uneven deformation of the end and middle parts caused by it ensures that the as-cast structure in the ingot is fully broken and a uniform structure is obtained, which has broad application prospects.

Method used

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  • A forging method of super-sized ti80 titanium alloy forging billet
  • A forging method of super-sized ti80 titanium alloy forging billet
  • A forging method of super-sized ti80 titanium alloy forging billet

Examples

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Effect test

Embodiment 1

[0034] Example 1, forging an ingot with a diameter of 1020mm and a weight of 11T:

[0035] S1. Billet forging: The heating temperature for billet forging of the ingot is 1150°C, and it is released after heating for 20 hours. Use an anvil with a diameter of 1800mm to perform upsetting deformation for the ingot once. The ratio is 1.2, and it is cooled by air cooling after forging. Among them, using an anvil with a diameter of 1800mm for one upsetting deformation can ensure the overall plastic deformation of the ingot, and avoid the excessively large height-diameter ratio of the ingot, resulting in uneven deformation of the ends and the middle during upsetting. Edge processing avoids the deformation dead zone at the corners;

[0036] S2. Intermediate forging: The ingot after billet forging in step S1 is forged for 7 times in the single-phase region, and the heating temperature for each fire is selected to be 20°C to 120°C above the phase transition point, and the heating tempera...

Embodiment 2

[0043] Example 2, forging an ingot with a diameter of 1020mm and a weight of 11T:

[0044] S1. Billet forging: The heating temperature for the billet forging of the ingot is 1200°C, and it is released after heating for 22 hours. The ingot is subjected to upsetting deformation with an anvil with a diameter of 1800mm. The ratio is 1.7, and it is cooled by air cooling after forging.

[0045] S2. Intermediate forging: The ingot after billet forging in step S1 is forged for 8 times in the single-phase region. Gradually decrease, the billet is wrapped with thick asbestos with a thickness of 25mm before each forging. After the material comes out of the furnace, upsetting, drawing and chamfering are performed in sequence. The forging ratio of each fire is 1.9, and air cooling is adopted after forging. , to obtain the blank after the first intermediate forging.

[0046] The billet after the first intermediate forging is forged for 6 times in the two-phase region, and the heating temp...

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Abstract

A method for forging a super-sized Ti80 titanium alloy forging billet, comprising: S1, billet forging: performing billet forging on a Ti80 ingot, wherein the billet forging method is upsetting, and the forged billet is air-cooled ; S2, intermediate forging: the billet obtained after billet forging is subjected to multi-fire forging; S3, finished product forging: the billet after intermediate forging is elongated and formed when the temperature is lower than the phase transition point, and the forged billet is forged. Air-cooled to finally obtain Ti80 titanium alloy forging billets that meet the specifications. The method for forging large-sized forging billets of Ti80 titanium alloy proposed by the invention avoids the phenomenon of uneven deformation of the ends and the middle of the ingots with excessive height-diameter ratio during upsetting, and ensures that the as-cast structure in the ingots is sufficient It has broad application prospects for crushing and obtaining homogenized tissue.

Description

technical field [0001] The invention belongs to the technical field of non-ferrous metal processing methods, and in particular relates to a forging method for super-sized Ti80 titanium alloy forging billets. Background technique [0002] Ti80 titanium alloy is a new type of Ti-Al-Nb-Zr-Mo series α+β titanium alloy independently developed by my country. It has comprehensive properties such as high strength, high toughness, weldability, corrosion resistance, good low cycle fatigue and high impact toughness. Compared with the traditional titanium alloy TC4, the plasticity is increased by 3% to 5%, and the impact toughness is increased by nearly 2 times, is widely used in aviation, aerospace, navigation and other fields, especially in the field of marine engineering has good application prospects. At present, the field of marine engineering has gradually begun to use large-scale forging blanks to prepare pressure vessels, pressure-resistant shells and other components. [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J1/02B21J5/08B21J5/06B21K29/00
CPCB21J1/02B21J5/08B21J5/06B21K29/00
Inventor 杨晶雷锦文任晓龙杜玉俊陈海生张胜罗锦华王凯旋李少强杜予晅刘向宏
Owner 西部超导材料科技股份有限公司
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