CN102312111A - Method for preparing TiAl alloy through melting with consumable vacuum arc furnace - Google Patents
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Abstract
The invention discloses a method for preparing a TiAl alloy through melting a consumable vacuum arc furnace. The method comprises the following steps: 1, weighing a metal Ti and a metal Al, and mixing; 2, respectively suppressing the well mixed metal Ti and Al into a 2.2-4.0 kg electrode; 3, welding two electrodes into a melting electrode; 4, melting the welded TiAl electrode in a 10kg of the consumable vacuum arc furnace, and preparing TiAl primary ingots with the diameter of 80mm; 5, cutting off the head and flattening the end through melting with the primary ingots, and preparing a secondary electrode through welding each six primary ingots with an argon tungsten arc welder; and 6, melting the welded TiAl secondary electrode in a 150kg consumable vacuum arc furnace, and preparing TiAl secondary ingots with the diameter of 120mm. In the weighed metal Ti and the metal Al, the weight percentage content of Ti is 50-87.5%, and the weight percentage content of Al is 12.5-50%. Compared with the prior art, the method of the present invention which has the advantages of simple technology and low cost allows a TiAl alloy target material with no obvious defects of pores, segregation and the like and uniform size of the structure.
Description
Technical field
That the present invention relates to is a kind of preparation method of intermetallic alloy target, specifically is a kind of method that adopts vacuum consumable electrode arc furnace smelting TiAl alloy.
Background technology
Magnetron sputtering plating is a kind of novel physical vapor plated film mode, and than evaporation coating mode earlier, the advantage of its a lot of aspects is quite obvious.As a comparatively proven technique that has developed, magnetron sputtering has been applied to many fields.The magnetron sputtering plating target is divided into metal sputtering plated film target, alloy sputter plated film target, ceramic sputtering coating target; The boride ceramics sputtering target material, carbide ceramics sputtering target material, fluorochemical ceramic sputtering target material; The nitride ceramics sputtering target material, oxide ceramics target etc.The Ti-Al alloy target material is that (Ti, the Al) core material of N film require its composition even to multi-arc ion coating, and clarity is high, fine and close.(Ti, Al) the N film has better tack, hardness HRC than the TiN film>70, good toughness, use temperature is higher approximately 200 ℃ than TiN film, makes cutter life improve 5-6 doubly, and therefore this film has broad application prospects in cutlery plated film industry.Abroad be widely used at present on the cutleries such as drill bit in the processing industry of car combustion engine, accurate device, milling cutter, lathe tool, its working accuracy is high, prolongs duration of service on the automatic production line, raises the efficiency.Present impurity component to the TiAl target is controlled at C, and < 0.03%, < 0.5%, H < 0.03% for O.The TiAl alloy target material is mainly used in multi-arc ion plating film.Because each composition constituent element fusing point difference of this alloy is big, characteristics such as the hot height of melting reaction make this alloy in the preparation process, have tangible pore, and defectives such as segregation also are easy to generate serious quality problems such as crackle simultaneously.
Summary of the invention
The objective of the invention is to overcome the deficiency of above-mentioned prior art,, a kind of method that adopts the vacuum consumable electrode arc furnace melting to be used for the TiAl alloy of cutlery plated film industry is provided to the characteristic of TiAl alloy.The TiAl alloy that this method prepares does not have defectives such as obvious pore, segregation, and the tissue size evenly.
This purpose realizes through following technical scheme:
The present invention relates to a kind of method that adopts vacuum consumable electrode arc furnace smelting TiAl alloy, may further comprise the steps:
(a), weighing: take by weighing sponge attitude metal Ti and bulk metal Al, mix;
(b), compacting electrode: the metal Ti and the Al that mix in the step (a) are pressed into electrode, and each electrode is controlled at 2.2～4.0 kilograms, and wherein Ti and Al mix cloth;
(c), grid for welding: two electrodes that suppress in the step (b) are welded into smelting electrode;
(d), ingot of vacuum consumable smelting: the TiAl electrode of welding in the step (c) is carried out melting at 10kg vacuum consumable arc-melting stove, and adopting diameter is the copper crucible of 80mm, melts out ingot of TiAl of diameter 80mm;
(e), welding secondary smelting electrode: with an ingot of melting with lathe decaptitate, horizontal tail, per 6 ingots adopt argon tungsten-arc weldings to be welded into second electrode;
(f), vacuum consumable smelting secondary ingot: the TiAl second electrode of welding is carried out melting at 150kg vacuum consumable arc-melting stove, and adopting diameter is the copper crucible of 120mm, melts out the TiAl secondary ingot of diameter 120mm.
Preferably, in the step (a), in the said metal Ti and Al that takes by weighing, the weight percent content of Ti is 50～87.5%, and the weight percent content of Al is 12.5～50%.
Preferably, in the step (c), said welding is to adopt the argon tungsten-arc welding welding.
Preferably, in the step (d), the electric current of a said ingot melting is 1.5～2.0kA, and the working vacuum degree is 1.0 * 10E
-1Pa.
Preferably, in the step (f), the electric current of said secondary ingot melting is 3.0～3.6kA, and the working vacuum degree is 1.0 * 10E
-1Pa.
Compared with prior art, the beneficial effect that the present invention has is: technology of the present invention is simple, and is with low cost, adopts method of the present invention can make defectives such as no obvious pore, segregation, organizes TiAl alloy target material of uniform size.
Description of drawings
Fig. 1 is the synoptic diagram of the TiAl alloy secondary ingot of embodiment 3;
Fig. 2 is the microtexture photo figure of the TiAl alloy secondary ingot of embodiment 3.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment being to implement under the prerequisite with technical scheme of the present invention.
Embodiment 1
Adopt vacuum consumable electrode arc furnace smelting TiAl alloy, concrete steps are following:
(a), weighing: according to mass ratio Ti 87.5%, the ratio of Al 12.5% takes by weighing, mixes with metal Ti and metal A l;
(b), compacting electrode: will take by weighing the blended metal Ti in proportion and Al is pressed into electrode, each electrode is controlled at 2.2 kilograms;
(c), grid for welding: per two the electrodes use argon tungsten-arc weldings that suppress are welded into smelting electrode;
(d), ingot of vacuum consumable smelting: the TiAl electrode of welding is carried out melting at 10kg vacuum consumable arc-melting stove, and electric current 2.0kA, working vacuum degree are 1.0 * 10E
-1Pa, adopting diameter is the copper crucible of 80mm, melts out ingot of TiAl of diameter 80mm;
(e), welding secondary smelting electrode: with an ingot of melting with lathe decaptitate, horizontal tail, per 6 ingots adopt argon tungsten-arc weldings to be welded into second electrode;
(f), vacuum consumable smelting secondary ingot: the TiAl second electrode of welding is carried out melting at 150kg vacuum consumable arc-melting stove, and electric current 3.6kA, working vacuum degree are 1.0 * 10E
-1Pa, adopting diameter is the copper crucible of 120mm, melts out the TiAl secondary ingot of diameter 120mm.
Embodiment 2
Adopt vacuum consumable electrode arc furnace smelting TiAl alloy, concrete steps are following:
(a), weighing: according to mass ratio Ti 75%, the ratio of Al 25% takes by weighing, mixes with metal Ti and metal A l;
(b), compacting electrode: will take by weighing the metal Ti and the Al that mix in proportion and be pressed into electrode, each electrode is controlled at 4.0 kilograms;
(c), grid for welding: per two the electrodes use argon tungsten-arc weldings that suppress are welded into smelting electrode;
(d), ingot of vacuum consumable smelting: the TiAl electrode of welding is carried out melting at 10kg vacuum consumable arc-melting stove, and electric current 1.8kA, working vacuum degree are 1.0 * 10E
-1Pa, adopting diameter is the copper crucible of 80mm, melts out ingot of TiAl of diameter 80mm;
(e), welding secondary smelting electrode: with an ingot of melting with lathe decaptitate, horizontal tail, per 6 ingots adopt argon tungsten-arc weldings to be welded into second electrode;
(f), vacuum consumable smelting secondary ingot: the TiAl second electrode of welding is carried out melting at 150kg vacuum consumable arc-melting stove, and electric current 3.5kA, working vacuum degree are 1.0 * 10E
-1Pa, adopting diameter is the copper crucible of 120mm, melts out the TiAl secondary ingot of diameter 120mm.
Embodiment 3
Adopt vacuum consumable electrode arc furnace smelting TiAl alloy, concrete steps are following:
(a), weighing: according to mass ratio Ti 64%, the ratio of Al 36% takes by weighing, mixes with metal Ti and metal A l;
(b), compacting electrode: will take by weighing the metal Ti and the Al that mix in proportion and be pressed into electrode, each electrode is controlled at 2.8 kilograms;
(c), grid for welding: per two the electrodes use argon tungsten-arc weldings that suppress are welded into smelting electrode;
(d), welding secondary smelting electrode: the TiAl electrode of welding is carried out melting at 10kg vacuum consumable arc-melting stove, and electric current 1.5kA, working vacuum degree are 1.0 * 10E
-1Pa, adopting diameter is the copper crucible of 80mm, melts out ingot of TiAl of diameter 80mm;
(e), vacuum consumable smelting secondary ingot: with an ingot of melting with lathe decaptitate, horizontal tail, per 6 ingots adopt argon tungsten-arc weldings to be welded into second electrode;
(f), vacuum consumable smelting secondary ingot: the TiAl second electrode of welding is carried out melting at 150kg vacuum consumable arc-melting stove, and electric current 3.4kA, working vacuum degree are 1.0 * 10E
-1Pa, adopting diameter is the copper crucible of 120mm, melts out the TiAl secondary ingot of diameter 120mm.
Embodiment 4
Adopt vacuum consumable electrode arc furnace smelting TiAl alloy, concrete steps are following:
(a), weighing: according to mass ratio Ti 50%, the ratio of Al 50% takes by weighing, mixes with metal Ti and metal A l;
(b), compacting electrode: will take by weighing the metal Ti and the Al that mix in proportion and be pressed into electrode, each electrode is controlled at 3.4 kilograms;
(c), grid for welding: per two the electrodes use argon tungsten-arc weldings that suppress are welded into smelting electrode;
(d), ingot of vacuum consumable smelting: the TiAl electrode of welding is carried out melting at 10kg vacuum consumable arc-melting stove, and electric current 1.5kA, working vacuum degree are 1.0 * 10E
-1Pa, adopting diameter is the copper crucible of 80mm, melts out ingot of TiAl of diameter 80mm;
(e), welding secondary smelting electrode: with an ingot of melting with lathe decaptitate, horizontal tail, per 6 ingots adopt argon tungsten-arc weldings to be welded into second electrode;
(f), vacuum consumable smelting secondary ingot: the TiAl second electrode of welding is carried out melting at 150kg vacuum consumable arc-melting stove, and electric current 3.0 kA, working vacuum degree are 1.0 * 10E
-1Pa, adopting diameter is the copper crucible of 120mm, melts out the TiAl secondary ingot of diameter 120mm.
The method of the vacuum consumable smelting that process using of the present invention is traditional, preparation technology is simple, can obtain the alloy cast ingot of different size through simple replacing water cold crucible, need not special smelting apparatus; With low cost, the raw material of employing is Titanium Sponge 40-60 mesh and aluminium block directly, and raw materials cost is cheap, and the melting energy consumption is low; Adopt method of the present invention can make defectives such as no obvious pore, segregation, organize TiAl alloy target material ingot casting of uniform size.The TiAl alloy secondary ingot ingot casting surface that embodiment 1～4 makes does not all have defectives such as tangible pore, and is shown in Figure 1 for the diameter of embodiment 3 is the ingot casting photo of the TiAl alloy secondary ingot of 120mm, can see that the ingot casting surface does not have defectives such as tangible pore.Shown in Figure 2 is the microtexture photo of the TiAl secondary ingot of embodiment 3, and the tissue size is not evenly seen segregation, the unequal defective of grain size.
Claims (5)
1. a method that adopts vacuum consumable electrode arc furnace smelting TiAl alloy is characterized in that, may further comprise the steps:
(a), weighing: take by weighing sponge attitude metal Ti and bulk metal Al, mix;
(b), compacting electrode: the metal Ti and the Al that mix in the step (a) are pressed into electrode, and each electrode is controlled at 2.2～4.0 kilograms, and wherein Ti and Al mix cloth;
(c), grid for welding: two electrodes that suppress in the step (b) are welded into smelting electrode;
(d), ingot of vacuum consumable smelting: the TiAl electrode of welding in the step (c) is carried out melting at 10kg vacuum consumable arc-melting stove, and adopting diameter is the copper crucible of 80mm, melts out ingot of TiAl of diameter 80mm;
(e), welding secondary smelting electrode: with an ingot of melting with lathe decaptitate, horizontal tail, per 6 ingots adopt argon tungsten-arc weldings to be welded into second electrode;
(f), vacuum consumable smelting secondary ingot: the TiAl second electrode of welding is carried out melting at 150kg vacuum consumable arc-melting stove, and adopting diameter is the copper crucible of 120mm, melts out the TiAl secondary ingot of diameter 120mm.
2. the method for employing vacuum consumable electrode arc furnace smelting TiAl alloy according to claim 1 is characterized in that,
In the step (a), in the said metal Ti and Al that takes by weighing, the weight percent content of Ti is 50～87.5%, and the weight percent content of Al is 12.5～50%.
3. the method for employing vacuum consumable electrode arc furnace smelting TiAl alloy according to claim 1 is characterized in that, in the step (c), said welding is to adopt the argon tungsten-arc welding welding.
4. the method for employing vacuum consumable electrode arc furnace smelting TiAl alloy according to claim 1 is characterized in that, in the step (d), the electric current of a said ingot melting is 1.5～2.0kA, and the working vacuum degree is 1.0 * 10E
-1Pa.
5. the method for employing vacuum consumable electrode arc furnace smelting TiAl alloy according to claim 1 is characterized in that, in the step (f), the electric current of said secondary ingot melting is 3.0～3.6kA, and the working vacuum degree is 1.0 * 10E
-1Pa.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849839A (en) * | 2012-12-04 | 2014-06-11 | 光洋应用材料科技股份有限公司 | Aluminum-titanium alloy sputtering target material and production method thereof |
| CN104138921A (en) * | 2014-06-16 | 2014-11-12 | 西安西工大超晶科技发展有限责任公司 | Preparation method of in-situ synthesized aluminum-based composite bar |
| CN104278167A (en) * | 2014-09-15 | 2015-01-14 | 安泰科技股份有限公司 | Manufacturing method of high-quality titanium-aluminum alloy target |
| CN105177332A (en) * | 2015-09-22 | 2015-12-23 | 中国兵器科学研究院宁波分院 | Method for preparing high-tungsten-content tungsten-zirconium alloy |
| CN106077979A (en) * | 2016-06-29 | 2016-11-09 | 西安西工大超晶科技发展有限责任公司 | A kind of welding method of titanium-aluminium alloy electrode |
| CN106148748A (en) * | 2015-04-01 | 2016-11-23 | 贵州顶效经济开发区沈兴实业有限责任公司 | A kind of Graphene titanium alloy smelting method |
| CN108796304A (en) * | 2018-06-22 | 2018-11-13 | 江苏钛坦新材料有限公司 | A kind of γ-TiAl prealloys gas-atomized powder electrode bar and preparation method thereof |
| CN110257783A (en) * | 2019-06-27 | 2019-09-20 | 上海交通大学 | A kind of low cost preparation method of titanium silicon target |
| CN113637858A (en) * | 2021-07-14 | 2021-11-12 | 上海大学 | TiAl-based alloy based on two-step composite smelting process and preparation method thereof |
| CN113652658A (en) * | 2021-08-25 | 2021-11-16 | 湖南稀土金属材料研究院有限责任公司 | La-Zr alloy target and preparation method thereof |
| CN113684456A (en) * | 2021-08-25 | 2021-11-23 | 湖南稀土金属材料研究院有限责任公司 | La-Ti alloy target and preparation method thereof |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103849839A (en) * | 2012-12-04 | 2014-06-11 | 光洋应用材料科技股份有限公司 | Aluminum-titanium alloy sputtering target material and production method thereof |
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| CN104278167A (en) * | 2014-09-15 | 2015-01-14 | 安泰科技股份有限公司 | Manufacturing method of high-quality titanium-aluminum alloy target |
| CN106148748A (en) * | 2015-04-01 | 2016-11-23 | 贵州顶效经济开发区沈兴实业有限责任公司 | A kind of Graphene titanium alloy smelting method |
| CN105177332A (en) * | 2015-09-22 | 2015-12-23 | 中国兵器科学研究院宁波分院 | Method for preparing high-tungsten-content tungsten-zirconium alloy |
| CN106077979A (en) * | 2016-06-29 | 2016-11-09 | 西安西工大超晶科技发展有限责任公司 | A kind of welding method of titanium-aluminium alloy electrode |
| CN106077979B (en) * | 2016-06-29 | 2018-09-07 | 西安西工大超晶科技发展有限责任公司 | A kind of welding method of titanium-aluminium alloy electrode |
| CN108796304A (en) * | 2018-06-22 | 2018-11-13 | 江苏钛坦新材料有限公司 | A kind of γ-TiAl prealloys gas-atomized powder electrode bar and preparation method thereof |
| CN110257783A (en) * | 2019-06-27 | 2019-09-20 | 上海交通大学 | A kind of low cost preparation method of titanium silicon target |
| CN113637858A (en) * | 2021-07-14 | 2021-11-12 | 上海大学 | TiAl-based alloy based on two-step composite smelting process and preparation method thereof |
| CN113652658A (en) * | 2021-08-25 | 2021-11-16 | 湖南稀土金属材料研究院有限责任公司 | La-Zr alloy target and preparation method thereof |
| CN113684456A (en) * | 2021-08-25 | 2021-11-23 | 湖南稀土金属材料研究院有限责任公司 | La-Ti alloy target and preparation method thereof |
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