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Preparation method for high-uniformity WSTi62441S titanium alloy ingot

A homogeneous, titanium alloy technology, applied in the field of preparation of high-uniformity WSTi62441S titanium alloy ingots, can solve the problems of poor control of impurities and interstitial elements, composition segregation, low batch stability, etc., to achieve batch stability Good, uniform effect of elemental composition

Inactive Publication Date: 2015-08-19
西部超导材料科技股份有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a preparation method of high-uniformity WSTi62441S titanium alloy ingot, which can fully alloy and homogenize the components of the titanium alloy, and solve the composition segregation, impurities and gaps existing in the existing preparation method Poor content control of elements and low batch stability

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preparation example Construction

[0031] A kind of preparation method of high uniformity WSTi62441S titanium alloy casting ingot of the present invention, specifically comprises the following steps:

[0032] Step 1: Mixing

[0033] Select grade 1 or grade 0 sponge titanium, mix it with the intermediate alloy Al-Mo alloy according to the Mo content ratio of 3.5%~4.5%, Ti-Sn alloy according to the Sn content ratio of 1.0%~2.5%, and AlMoWTi alloy according to the W content ratio of 0.4% %~1.5%, the Al content is added at a ratio of 6.0%~7.0%, the zirconium sponge is added at a ratio of Zr content of 3.0%~4.5%, and the Ti-Si alloy is added at a Si content of 0.2%~0.25%. The single-block mixing method is used for mixing, and the mass percentage of the alloy ratio obtained is: 6.0%-7.0% for Al, 1.0%-2.5% for Sn, 3.5%-4.5% for Mo, and 3.0%-4.5% for Zr, Si is 0.20% to 0.25%, W is 0.4% to 1.5%, the rest is Ti, and the sum of the mass percentages of each element is 100%;

[0034] Step 2: Consumable electrode pressing ...

Embodiment 1

[0043] Step 1: Mixing

[0044]Sponge titanium of grade 1 or above is selected, mixed with the intermediate alloy Al-Mo alloy at a ratio of Mo content of 4.0%, Ti-Sn alloy at a ratio of Sn content of 1.0%, AlMoWTi alloy at a ratio of W content of 1.5%, and an Al content of The ratio of 7.0% is added, the zirconium sponge is added according to the ratio of Zr content of 3.0%, and the Ti-Si alloy is added according to the content of Si 0.23%. The single block mixing method is used for mixing, and the mass percentage of the alloy ratio is obtained: Al is 7.0%, Sn is 1.0%, Mo is 4.0%, Zr is 3.0%, W is 1.5%, Si element is 0.23%, the rest is Ti, and the sum of the mass percentage of each element is 100%;

[0045] Step 2: Consumable electrode pressing and welding

[0046] Use a large-scale hydraulic machine to carry out electrode compression on the material mixed in step 1. The pressing pressure is 20MPa, and the pressure holding time is 6s. Use a non-tungsten argon shielded plasma b...

Embodiment 2

[0054] Step 1: Mixing

[0055] Grade 0 sponge titanium is selected, and the intermediate alloy Al-Mo alloy is mixed with a Mo content of 4.5%, the Ti-Sn alloy is mixed with a Sn content of 1.5%, the AlMoWTi alloy is mixed with a W content of 0.5%, and the Al content is 6.0% % proportion, the sponge zirconium is mixed according to the Zr content of 4.5%, the Ti-Si alloy is mixed according to the Si content of 0.25%, and the single block mixing method is used for mixing, and the mass percentage of the alloy ratio is obtained: Al is 6.0% %, Sn is 1.5%, Mo is 4.5%, Zr is 4.5%, W is 0.5%, Si element is 0.25%, the rest is Ti, and the sum of the mass percentage of each element is 100%;

[0056] Step 2: Consumable electrode pressing and welding

[0057] Use a large hydraulic press to compress the electrodes mixed in step 1. The pressing pressure is 23MPa, and the holding time is 4s. Use a non-tungsten argon shielded plasma box to weld the pressed electrode block into a consumable ele...

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Abstract

The invention discloses a preparation method for a high-uniformity WSTi62441S titanium alloy ingot. The preparation method comprises the following steps of mixing 6.0 to 7.0 mass percent of Al, 1.0 to 2.5 mass percent of Sn, 3.5 to 4.5 mass percent of Mo, 3.0 to 4.5 mass percent of Zr, 0.20 to 0.25 mass percent of Si, 0.4 to 1.5 mass percent of W and the balance of Ti based on the total amount of 100 percent, performing electrode pressing and welding on the mixture to obtain a consumable electrode, and performing vacuum smelting on the consumable electrode for many times to obtain the high-uniformity WSTi62441S titanium alloy ingot. According to the preparation method, the problems of composition segregation, poor controllability in the content of impurities and an interstitial element and poor batch stability of the conventional preparation method are solved, the prepared WSTi62441S titanium alloy ingot is uniform in element composition and high in batch stability, and the preparation method is applied to the industrial production of WSTi62441S titanium alloy ingots in specifications of Phi560 to Phi720mm.

Description

technical field [0001] The invention belongs to the technical field of nonferrous metal processing, and in particular relates to a method for preparing a high-uniformity WSTi62441S titanium alloy ingot. Background technique [0002] The nominal composition of WSTi62441S titanium alloy is: Ti-6Al-2Sn-4Zr-4Mo-1W-0.2Si, which belongs to the heat-strength and high-temperature α+β type titanium alloy. discs and blades. [0003] This titanium alloy contains 6 main elements, and the physical and chemical properties of each main element are different. When smelting ingots, there are certain technical difficulties in controlling the uniformity of each element. For example, this titanium alloy contains high melting point elements Mo (melting point is 2625°C) and W (melting point is 3423°C), volatile element Sn, and trace element Si. If it is not properly controlled, it may reduce the quality of the ingot and directly affect the performance of subsequent processed products. At the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/03C22C14/00C22B9/20C22B9/04
Inventor 尚金金雷锦文李少强史小云赖运金王凯旋罗文忠杜予晅
Owner 西部超导材料科技股份有限公司
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