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Vacuum induction melting method for titanium-aluminum alloy target material

A vacuum induction melting, titanium-aluminum alloy technology, applied in vacuum evaporation plating, metal material coating process, ion implantation plating, etc. Advanced problems, to achieve the effect of low production cost, avoid alloy liquid splashing, and accurately control alloy composition

Active Publication Date: 2015-05-27
北京安泰六九新材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that large-sized titanium-aluminum targets can be produced; the disadvantage of this method is that metal impurities will inevitably increase during the production process, and the gas (C, N, O) content is high
[0005] (2) Smelting and casting method: At present, there are several methods for smelting titanium-aluminum alloys: the first is to use vacuum electron beam smelting. Vacuum consumable electric arc furnace smelting, the segregation of the titanium-aluminum alloy smelted by this method is large; the third method is to use a vacuum suspension furnace for smelting, although the titanium-aluminum alloy smelted by this method has relatively low gas and metal impurity content, but this method Secondary remelting is required, and the equipment is expensive and the energy consumption is high, resulting in high cost of smelting alloys
In addition, graphite is used as crucible material for vacuum induction smelting, but the smelted alloy ingot has a high carbon content.
In the patent application with the publication number CN1420189A, a high-purity CaO crucible is used for vacuum induction melting. This method requires two vacuuming operations, and the feeding method is cumbersome. The addition of calcium and deoxidation will increase the content of impurity elements in the alloy system. Calcium oxide inclusions remain in the alloy solution, and a large number of endogenous inclusions are formed after casting, which cannot be removed

Method used

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  • Vacuum induction melting method for titanium-aluminum alloy target material
  • Vacuum induction melting method for titanium-aluminum alloy target material
  • Vacuum induction melting method for titanium-aluminum alloy target material

Examples

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Effect test

Embodiment 1

[0030] The titanium-aluminum alloy target prepared in this example is composed of the following elements by weight percentage: Ti64%, Al36%.

[0031] The manufacturing method is as follows:

[0032] (1) Ingredients: Weigh grade 0 sponge titanium and metal aluminum with a purity higher than 99.99% according to the above alloy composition design.

[0033] (2) Baking material: Put the weighed raw materials titanium and aluminum into a vacuum oven (vacuum degree of 5000Pa), keep it warm at 100°C for 5h, cool down to 35°C with the furnace, and take it out for use.

[0034] (3) Furnace loading: put the metal aluminum in the baked raw material (ie furnace charge) into the bottom of the CaO crucible of a 25Kg vacuum induction furnace, and then loosely pack the titanium sponge on the upper part of the metal aluminum.

[0035] (4) Alloy melting: first, keep the vacuum degree of the vacuum induction furnace at 0.03Pa, and then send electricity with an electric power of 15KW. After 14 mi...

Embodiment 2

[0044] The titanium-aluminum alloy target prepared in this embodiment is composed of the following elements by weight percentage: Ti60%, Al40%.

[0045] The manufacturing method is as follows:

[0046] (1) Ingredients: Weigh grade 0 sponge titanium and metal aluminum with a purity higher than 99.99% according to the above alloy composition design.

[0047] (2) Baking material: Put the weighed raw materials titanium and aluminum into a vacuum oven (vacuum degree of 5000Pa), keep it warm at 140°C for 4h, cool down to 38°C with the furnace, and take it out for use.

[0048] (3) Furnace loading: put the metal aluminum in the baked raw material (ie furnace charge) into the bottom of the CaO crucible of a 25Kg vacuum induction furnace, and then loosely pack the titanium sponge on the upper part of the metal aluminum.

[0049] (4) Alloy melting: firstly, keep the vacuum degree of the vacuum induction furnace at 0.04Pa, and then transmit electricity with an electric power of 13KW. Af...

Embodiment 3

[0054] The titanium-aluminum alloy target prepared in this embodiment is composed of the following elements by weight percentage: Ti70%, Al30%.

[0055] The manufacturing method is as follows:

[0056] (1) Ingredients: Weigh grade 0 sponge titanium and metal aluminum with a purity higher than 99.99% according to the above alloy composition design.

[0057] (2) Baking materials: Put the weighed raw materials titanium and aluminum into a vacuum oven (vacuum degree of 5000Pa), keep it warm at 140°C for 4h, cool down to 36°C with the furnace, and take it out for use.

[0058] (3) Furnace loading: put the metal aluminum in the baked raw material (ie furnace charge) into the bottom of the CaO crucible of a 25Kg vacuum induction furnace, and then loosely pack the titanium sponge on the upper part of the metal aluminum.

[0059] (4) Alloy melting: firstly, keep the vacuum degree of the vacuum induction furnace at 0.02Pa, and then transmit electricity with an electric power of 15KW. A...

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Abstract

The invention discloses a vacuum induction melting method for a titanium-aluminum alloy target material. The method employs a CaO crucible to perform vacuum induction melting to prepare titanium-aluminum alloy, and sequentially includes the steps of: batching, drying, furnace charging, alloy melting, and casting. The method provided by the invention has the advantages of simple process, short production cycle, low energy consumption, small equipment investment, low production cost, accurate control of alloy composition, small crucible pollution, low gas content, and no subcutaneous blowhole or other casting defects.

Description

technical field [0001] The invention belongs to the field of metallurgical preparation, in particular to a vacuum induction melting method for a titanium-aluminum alloy target. Background technique [0002] With the advent of the era of high-speed machining in the modern machining industry, countries around the world are paying more and more attention to the application and development of coating technology. PVD (Physical Vapor Deposition) coating not only plays an important role in improving the performance of high-speed alloy tools, but also is essential for cemented carbide tools, because cemented carbide tools are more expensive than high-speed alloy tools, and the usage rate higher. In the PVD coating of cutting tools, titanium-aluminum alloy is a very important film material. For example, two representative coatings developed by Balzers are FUTURA NANO and X.CEED respectively, among which FUTURA NANO can make the cutting tool use under the condition of high-speed mac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C1/02C23C14/14
Inventor 周武平穆健刚姚伟文彬梁俊才李建奎马志伟赵岩缪磊
Owner 北京安泰六九新材料科技有限公司
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