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Titanium-molybdenum-nickel intermediate alloy and preparation method and application thereof

An intermediate alloy, titanium-molybdenum-nickel technology, applied in the field of alloys, can solve problems such as unqualified, uneven alloy composition, and poor alloy quality

Active Publication Date: 2019-09-06
CHENGDE TIANDA VANADIUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, the conventional production method of TA10 is to add nickel-molybdenum binary alloy to sponge titanium for smelting. This method is easy to cause segregation, which makes the final alloy composition uneven, and the quality of the alloy is poor or even unqualified.

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  • Titanium-molybdenum-nickel intermediate alloy and preparation method and application thereof

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preparation example Construction

[0023] The present invention also provides the preparation method of titanium-molybdenum-nickel master alloy described in above-mentioned technical scheme, comprises the steps:

[0024] The titanium-molybdenum-nickel master alloy is obtained by mixing metal titanium, metal molybdenum and metal nickel for induction melting.

[0025] In the present invention, unless otherwise specified, all components are commercially available items well known to those skilled in the art.

[0026] In the present invention, the mass mixing ratio of the metal titanium, metal molybdenum and metal nickel is corresponding to the element content of the titanium-molybdenum-nickel master alloy described in the above-mentioned technical solution, and will not be repeated here.

[0027] The invention mixes metal titanium, metal molybdenum and metal nickel to obtain a mixed material. In the present invention, the purity of the titanium metal is preferably 99.70-100%; the titanium metal is preferably gran...

Embodiment 1

[0041] 31.50kg of titanium sponge with a purity of 99.70%, 4.50kg of molybdenum with a purity of 99.95%, and 14.00kg of nickel with a purity of 99.95% are mixed, and the raw materials are fully contacted, and loaded into an intermediate frequency vacuum induction furnace.

[0042] Start the mechanical pump and Roots pump, keep it for 15 minutes, and evacuate the intermediate frequency vacuum induction furnace. When the vacuum display shows less than 40Pa, stop vacuuming and fill with argon until the pressure gauge on the furnace reaches 1atm (that is, the flat pressure state ), stop argon filling, and start heating and melting with electricity. Start heating with the initial power of 20kW. After 20 minutes, adjust the power to 30kW. After the alloy starts to melt, adjust the power to 70kW. After the alloy is melted, increase the power to 80kW. Refined for 6 minutes, poured, cooled with the furnace for 150 minutes, and then released from the furnace to obtain a titanium-molybde...

Embodiment 2

[0045] 27.50kg of titanium sponge with a purity of 99.70%, 6.50kg of molybdenum with a purity of 99.95%, and 16.00kg of nickel with a purity of 99.95% are mixed, and the raw materials are fully contacted, and loaded into an intermediate frequency vacuum induction furnace.

[0046] Start the mechanical pump and Roots pump, keep it for 15 minutes, and evacuate the intermediate frequency vacuum induction furnace. When the vacuum display shows less than 40Pa, stop vacuuming and fill with argon until the pressure gauge on the furnace reaches 1atm (that is, the flat pressure state ), stop argon filling, and start heating and melting with electricity. Start heating with the initial power of 20kW. After 20 minutes, adjust the power to 30kW. After the alloy starts to melt, adjust the power to 70kW. After the alloy is melted, increase the power to 80kW. Refined for 5.5 minutes, poured, cooled with the furnace for 150 minutes, and then released from the furnace to obtain a titanium-molyb...

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Abstract

The invention belongs to the technical field of alloys, and particularly relates to a titanium-molybdenum-nickel intermediate alloy and a preparation method and application thereof. The invention provides a titanium-molybdenum-nickel intermediate alloy, and the alloy comprises the following components in percentage by mass: 9-13% of Mo, 28-32% of Ni and the balance Ti. Compared with a traditionalbinary intermediate alloy, the titanium-molybdenum-nickel intermediate alloy has less component segregation when smelting TA10 titanium alloy; component homogenization of the TA10 titanium alloy is facilitated; and batching process during the smelting of the TA10 titanium alloy is simplified. Embodiment result indicates that the titanium-molybdenum-nickel intermediate alloy is low in impurity content, uniform and stable in component and relatively less in segregation; and the TA10 titanium alloy prepared from the titanium-molybdenum-nickel intermediate alloy is low in impurity content, uniformin component and relatively less in component segregation.

Description

technical field [0001] The invention belongs to the field of alloy technology, in particular to a titanium-molybdenum-nickel master alloy and its preparation method and application. Background technique [0002] TA10 (Ti-0.3Mo-0.8Ni) titanium alloy is a near-alpha alloy developed to improve the crevice corrosion performance of pure titanium. The alloy contains 0.3% Mo and 0.8% Ni by mass fraction, which not only strengthens the alloy, Moreover, the crevice corrosion resistance of the alloy to high temperature, low pH chloride or weak reducing acid is improved, so that the corrosion resistance of the alloy is significantly better than that of pure titanium and close to that of TA9 alloy. In addition, TA10 alloy also has good process plasticity and welding performance, and can be used in the annealed state. It has been widely used in the chemical industry. Its main products include plates, bars, pipes, forgings and wires. [0003] At present, the conventional production metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C22C1/03
CPCC22C1/02C22C1/03C22C14/00
Inventor 王志军刘强孙鑫段善博刘志彬
Owner CHENGDE TIANDA VANADIUM IND
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