CN101967582A - Method for smelting molybdenum titanium alloy - Google Patents
Method for smelting molybdenum titanium alloy Download PDFInfo
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Abstract
The invention discloses a method for smelting molybdenum titanium alloy, which comprises: adding 1 to 4 weight percent of molybdenum powder when mixing a granular or clastic titanium alloy raw material; and performing vacuum consumable electrode arc smelting for multiple times to obtain molybdenum titanium alloy cast ingots with uniform components. In the invention, the molybdenum powder is used as the raw material and added into the molybdenum titanium alloy; and as an intermediate process of preparing the molybdenum powder into molybdenum bars by powder metallurgy and subsequent deformation processing techniques first and then forming titanium and molybdenum by vacuum consumable electrode arc smelting of the molybdenum bars and titanium sponge or an intermediate process of forming an aluminum molybdenum alloy with molybdenum and aluminum by an aluminothermic process is not adopted, the production cost of the molybdenum titanium alloy is reduced considerably, the molybdenum titanium alloy cast ingots which are uniform in components and free from segregation and impurities can be obtained, and considerable economic benefit can be created.
Description
Technical field
The invention belongs to the titanium alloy technical field, relate to a kind of melting method of titanium alloy, especially a kind of melting method that contains molybdenum titanium alloy.
Background technology
Titanium alloy obtains widely applying in industries such as aerospace flight vehicle, medical material, petroleum drillings because of its unique character, and development along with the aerospacecraft designing technique, demand to Ti alloy with high performance is also increasing, and the consumption of titanium alloy is to a certain extent with the advance of having shown this aircraft in the aircraft.Yet titanium alloy generally contains more element hard to tolerate such as molybdenum etc., needs to adopt vacuum and high melt in preparation process, need to consume a large amount of electric power, thereby the principal element that limits its application in aircraft or civil area that becomes with high costs.Molybdenum is all body-centered cubic lattice mutually with titanium alloy beta, has identical lattice types, and it can dissolve in the titanium alloy in a large number in the mode of atomic substitutions, produces to imitate little lattice distortion.Therefore, molybdenum element can keep its higher plasticity when strengthening titanium alloy, and does not generate fragility mutually with titanium generation eutectoid or peritectoid reaction, and structure stability is good, thereby molybdenum element is widely used in the titanium alloy.In traditional technological process, molybdenum element adds in the titanium alloy with the form of master alloy such as titanium molybdenum or aluminium molybdenum master alloy.When the molybdenum content in the titanium alloy is higher, in titanium alloy, form defectives such as niggerhead, segregation in the traditional technology easily.Simultaneously, titanium molybdenum or aluminium molybdenum master alloy price are high, thereby significantly increase the cost of titanium alloy, have limited the Application Areas of titanium alloy.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned prior art, a kind of melting method that contains molybdenum titanium alloy is provided, this method is on traditional operational path basis, adopt high titanium molybdenum of molybdenum powder displacement cost cheaply or aluminium molybdenum master alloy to add in the titanium alloy, adopt repeatedly the vacuum consumable arc-melting stove to carry out melting and obtain composition and contain the molybdenum titanium alloy ingot casting uniformly as raw material.It can effectively improve the performance of the titanium alloy of preparation, can realize the purpose of scale operation titanium alloy again.
The objective of the invention is to solve by the following technical programs:
The melting method that this kind that the present invention proposes contains molybdenum titanium alloy is: by weight percentage, when particulate state or bits shape titanium alloy starting material batch mixing, add 1%～40% molybdenum powder, obtain composition through vacuum consumable arc-melting repeatedly then and contain the molybdenum titanium alloy ingot casting uniformly.
Further, the above-mentioned melting method that contains molybdenum titanium alloy specifically may further comprise the steps:
1) batching, compacting
According to weight percent molybdenum powder is sneaked into formation mixture A in particulate state or the bits shape titanium alloy starting material, mixture A is pressed into block electrode block with press;
2) electrode preparation
With the electrode block assembly welding growth strip shaped electric poles that suppresses, the welding vacuum is less than 8Pa;
3) melting once
The strip electrode that makes with previous step carries out ingot of melting acquisition as consumable electrode in vacuum consumable electrode arc furnace; The melting electric current of described melting once is 2～5KA, and the melting voltage control is at 26～30V;
4) secondary smelting
In vacuum consumable electrode arc furnace, carry out secondary smelting acquisition secondary ingot with an ingot inversion and as consumable electrode; The melting electric current of described secondary smelting is 4～8KA, and the melting voltage control is at 26～32V;
5) three meltings
Carry out three meltings acquisition finished product ingot casting with the inversion of secondary ingot and as consumable electrode in vacuum consumable electrode arc furnace, the melting electric current of described three meltings is 5～10KA, and the melting voltage control is at 26～32V;
6) cooling
The requirement of finished product ingot casting was cooled to come out of the stove below 200 ℃ after melting was finished, and made the described tungsten-titanium alloy that contains.
Further, in above-mentioned steps 2) in, adopt vacuum plasma arc or vacuum electron beam electrode welding resistance method to carry out the electrode welding.
Beneficial effect of the present invention is as follows:
The present invention adopts molybdenum powder, and adding contains in the molybdenum titanium alloy as raw material, owing to omitted from molybdenum powder and be prepared into molybdenum bar with follow-up deformation processing technique by powder metallurgy, form titanium molybdenum intermediary process by molybdenum bar and titanium sponge through vacuum consumable arc-melting again, or by the pilot process of thermite process by molybdenum and aluminium generation aluminium molybdenum alloy, significantly reduced the production cost that contains molybdenum titanium alloy, it is even to obtain composition, segregation-free and be mingled with contain the molybdenum titanium alloy ingot casting, can bring remarkable economic efficiency.
Embodiment
The melting method that contains molybdenum titanium alloy of the present invention adopts cheaply, and high titanium molybdenum or the aluminium molybdenum master alloy of molybdenum powder displacement cost adds in particulate state or the bits shape titanium alloy as raw material, obtain the even titan alloy casting ingot of composition through vacuum consumable arc-melting repeatedly, the content that requires molybdenum in the titanium alloy among the present invention is 1%～40% by weight percentage.
Below by embodiment the present invention is done and to describe in further detail:
Embodiment 1:
Below be that example describes preparation method of the present invention in detail with the TA11 alloy.
1) batching, compacting
Adopt titanium sponge, molybdenum powder, Al-55V master alloy, fine aluminium are raw material, components by weight percentage is Mo:1%, Al-55V:1.8%, Al:7.19%, batch mixing 300Kg, is pressed into the electrode block that monolithic weight is 10Kg with press.
2) electrode preparation
Adopt vacuum plasma arc or vacuum electron beam electrode welding resistance method with the electrode block assembly welding growth strip shaped electric poles that suppresses, the welding vacuum is less than 8Pa.
3) melting once
The strip electrode that makes with previous step carries out ingot of melting acquisition as consumable electrode in vacuum consumable electrode arc furnace, melting electric current 2～5KA, and the melting voltage control is at 26～30V.
4) secondary smelting
In vacuum consumable electrode arc furnace, carry out secondary smelting acquisition secondary ingot with an ingot inversion and as consumable electrode, melting electric current 4～8KA, the melting voltage control is at 26～32V.
5) three meltings
In vacuum consumable electrode arc furnace, carry out three meltings acquisition finished product ingot casting with the inversion of secondary ingot and as consumable electrode, melting electric current 5～10KA, the melting voltage control is at 26～32V.
6) cooling
The ingot casting requirement was cooled to come out of the stove below 200 ℃ after melting was finished, and avoided the uncooled ingot casting back of coming out of the stove that defectives such as oxidation take place.Promptly obtain the product that will prepare after coming out of the stove.
After the product of above-mentioned preparation carried out lathe tack and strip off the skin, at the head of ingot casting and upper, middle and lower are got block respectively and bits shape sample carries out composition analysis, the composition analysis result of molybdenum content was as shown in table 1:
The TA11 alloy molybdenum content (%) of table 1 preparation
| The position | Head | On | In | Down | Standard-required |
| Content | 0.93 | 0.90 | 0.98 | 1.06 | 0.75～1.25 |
Embodiment 2:
Below be that example describes preparation method of the present invention in detail with the TC18 alloy.
1) batching, compacting
Adopt titanium sponge, molybdenum powder, Al-55V master alloy, simple substance chromium, fine aluminium and pure iron are raw material, and components by weight percentage is: Mo:5%, Al-55V master alloy: 9%, Al:1%, Cr:1%, Fe:1%, all the other are titanium sponge, batch mixing 300Kg is pressed into the electrode block that monolithic weight is 10Kg with press.
2) electrode preparation:
Adopt vacuum plasma arc or vacuum electron beam electrode welding resistance method with the electrode block assembly welding growth strip shaped electric poles that suppresses, the welding vacuum is less than 8Pa.
3) melting once
The strip electrode that makes with previous step carries out ingot of melting acquisition as consumable electrode in vacuum consumable electrode arc furnace.Crucible diameter is selected 160mm for use, melting electric current 2～5KA, and the melting voltage control is at 26～30V.
4) secondary smelting
Carry out secondary smelting acquisition secondary ingot with an ingot inversion and as consumable electrode in vacuum consumable electrode arc furnace, crucible diameter is selected 220mm for use, melting electric current 4～8KA, and the melting voltage control is at 26～32V.
5) three meltings
In vacuum consumable electrode arc furnace, carry out three meltings acquisition finished product ingot casting with the inversion of secondary ingot and as consumable electrode.Selecting diameter for use is the crucible of 280mm, the melting electric current 5～10KA of three meltings, and the melting voltage control is at 26～32V.
6) cooling
The ingot casting requirement was cooled to come out of the stove below 200 ℃ after melting was finished, and avoided the uncooled ingot casting back of coming out of the stove that defectives such as oxidation take place.What obtain after coming out of the stove that the present invention will prepare contains molybdenum titanium alloy product (being the TC18 alloy).
With lathe tack and after stripping off the skin, at the head of ingot casting and upper, middle and lower are got block respectively and bits shape sample carries out composition analysis, the composition analysis result of molybdenum content is as shown in table 2 with above product:
The TC18 alloy molybdenum content (%) of table 2 preparation
| The position | Head | On | In | Down | Standard-required |
| Content | 4.90 | 4.94 | 5.01 | 5.10 | 4.0～5.5 |
Embodiment 3:
Below be that example describes preparation method of the present invention in detail with the TB8 alloy.
1) batching, compacting
Adopt titanium sponge, molybdenum powder, fine aluminium, silicon single crystal are raw material, components by weight percentage is Mo:15%, Nb:2.7%, Al:3%, Si:0.2%, all the other are titanium sponge, batch mixing 300Kg is pressed into the electrode block that monolithic weight is 10Kg with press;
2) electrode preparation
Adopt vacuum plasma arc or vacuum electron beam electrode welding resistance method with the electrode block assembly welding growth strip shaped electric poles that suppresses, the welding vacuum is less than 8Pa.
3) melting once
The strip electrode that makes with previous step carries out ingot of melting acquisition as consumable electrode in vacuum consumable electrode arc furnace, melting electric current 2～5KA, and the melting voltage control is at 26～30V.
4) secondary smelting
In vacuum consumable electrode arc furnace, carry out secondary smelting acquisition secondary ingot with an ingot inversion and as consumable electrode, melting electric current 4～8KA, the melting voltage control is at 26～32V.
5) three meltings
In vacuum consumable electrode arc furnace, carry out three meltings acquisition finished product ingot casting with the inversion of secondary ingot and as consumable electrode, melting electric current 5～10KA, the melting voltage control is at 26～32V.
6) cooling
The requirement of finished product ingot casting was cooled to come out of the stove below 200 ℃ after melting was finished, and avoided the uncooled ingot casting back of coming out of the stove that defectives such as oxidation take place.What can obtain the present invention preparation after coming out of the stove contains molybdenum titanium alloy product (being the TB8 alloy).
With lathe tack and after stripping off the skin, at the head of ingot casting and upper, middle and lower are got block respectively and bits shape sample carries out composition analysis, the composition analysis result of molybdenum content is as shown in table 3 with the above product that makes:
The TB8 alloy molybdenum content (%) of table 3 preparation
| The position | Head | On | In | Down | Standard-required |
| Content | 14.80 | 14.92 | 14.98 | 15.10 | 14～16 |
Embodiment 4:
Below be that example describes preparation method of the present invention in detail with the TB7 alloy.
1) batching, compacting
Adopt titanium sponge, molybdenum powder is a raw material, and components by weight percentage is Mo:32%, titanium sponge: 68%, and batch mixing 300Kg is pressed into the electrode block that monolithic weight is 10Kg with press.
2) electrode preparation
Adopt vacuum plasma arc or vacuum electron beam electrode welding resistance method with the electrode block assembly welding growth strip shaped electric poles that suppresses, the welding vacuum is less than 8Pa.
3) melting once
The strip electrode that makes with previous step carries out ingot of melting acquisition as consumable electrode in vacuum consumable electrode arc furnace, melting electric current 2～5KA, and the melting voltage control is at 26～30V.
4) secondary smelting
In vacuum consumable electrode arc furnace, carry out secondary smelting acquisition secondary ingot with an ingot inversion and as consumable electrode, melting electric current 4～8KA, the melting voltage control is at 26～32V.
5) three meltings
In vacuum consumable electrode arc furnace, carry out three meltings acquisition finished product ingot casting with the inversion of secondary ingot and as consumable electrode, melting electric current 5～10KA, the melting voltage control is at 26～32V.
6) cooling
The ingot casting requirement was cooled to come out of the stove below 200 ℃ after melting was finished, and avoided the uncooled ingot casting back of coming out of the stove that defectives such as oxidation take place.What can obtain the present invention preparation after coming out of the stove contains molybdenum titanium alloy product (being the TB7 alloy).
With the said products with lathe tack and after stripping off the skin, at the head of ingot casting and upper, middle and lower are got block respectively and bits shape sample carries out composition analysis.
The TB7 alloy molybdenum content (%) of table 4 preparation
| The position | Head | On | In | Down | Standard-required |
| Content | 31.50 | 31.76 | 31.90 | 32.05 | 30～34 |
Embodiment 5
Below be that example describes preparation method of the present invention in detail with the Ti-40Mo alloy.
1) batching, compacting
Adopt titanium sponge, molybdenum powder is a raw material, and components by weight percentage is Mo:40%, titanium sponge: 60%, and batch mixing 300Kg is pressed into the electrode block that monolithic weight is 10Kg with press.
2) electrode preparation
Adopt vacuum plasma arc or vacuum electron beam electrode welding resistance method with the electrode block assembly welding growth strip shaped electric poles that suppresses, the welding vacuum is less than 8Pa.
3) melting once
The strip electrode that makes with previous step carries out ingot of melting acquisition as consumable electrode in vacuum consumable electrode arc furnace, melting electric current 2～5KA, and the melting voltage control is at 26～30V.
4) secondary smelting
In vacuum consumable electrode arc furnace, carry out secondary smelting acquisition secondary ingot with an ingot inversion and as consumable electrode, melting electric current 4～8KA, the melting voltage control is at 26～32V.
5) three meltings
In vacuum consumable electrode arc furnace, carry out three meltings acquisition finished product ingot casting with the inversion of secondary ingot and as consumable electrode, melting electric current 5～10KA, the melting voltage control is at 26～32V.
6) cooling
The ingot casting requirement was cooled to come out of the stove below 200 ℃ after melting was finished, and avoided the uncooled ingot casting back of coming out of the stove that defectives such as oxidation take place.What can obtain the present invention preparation after coming out of the stove contains molybdenum titanium alloy product (being the TB7 alloy).
With the said products with lathe tack and after stripping off the skin, at the head of ingot casting and upper, middle and lower are got block respectively and bits shape sample carries out composition analysis.
The TB7 alloy molybdenum content (%) of table 4 preparation
| The position | Head | On | In | Down |
| Content | 39.50 | 39.8 | 40.10 | 41.2 |
Claims (3)
1. melting method that contains molybdenum titanium alloy, it is characterized in that, by weight percentage, when particulate state or bits shape titanium alloy starting material batch mixing, add 1%～40% molybdenum powder, obtain composition through vacuum consumable arc-melting repeatedly then and contain the molybdenum titanium alloy ingot casting uniformly.
2. according to the described melting method that contains molybdenum titanium alloy of claim 1, it is characterized in that, specifically may further comprise the steps:
1) batching, compacting
According to weight percent molybdenum powder is sneaked in particulate state or the bits shape titanium alloy starting material and to form mixture, mixture is pressed into block electrode block;
2) electrode preparation
With the electrode block assembly welding growth strip shaped electric poles that suppresses, the welding vacuum is less than 8Pa;
3) melting once
The strip electrode that makes with previous step carries out ingot of melting acquisition as consumable electrode in vacuum consumable electrode arc furnace; The melting electric current of described melting once is 2～5KA, and the melting voltage control is at 26～30V;
4) secondary smelting
In vacuum consumable electrode arc furnace, carry out secondary smelting acquisition secondary ingot with an ingot inversion and as consumable electrode; The melting electric current of described secondary smelting is 4～8KA, and the melting voltage control is at 26～32V;
5) three meltings
Carry out three meltings acquisition finished product ingot casting with the inversion of secondary ingot and as consumable electrode in vacuum consumable electrode arc furnace, the melting electric current of described three meltings is 5～10KA, and the melting voltage control is at 26～32V;
6) cooling
The requirement of finished product ingot casting was cooled to come out of the stove below 200 ℃ after melting was finished, and made the described tungsten-titanium alloy that contains.
3. the melting method that contains molybdenum titanium alloy according to claim 2 is characterized in that, in step 2) in, adopt vacuum plasma arc or vacuum electron beam electrode welding resistance method to carry out the electrode welding.
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Cited By (11)
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| CN102644006A (en) * | 2012-05-17 | 2012-08-22 | 湖南金天钛业科技有限公司 | Preparation method for titanium alloy TC18 through vacuum smelting |
| CN103397225A (en) * | 2013-07-19 | 2013-11-20 | 宝钛特种金属有限公司 | Nickel molybdenum titanium intermediate alloy and preparation method thereof |
| CN103735316A (en) * | 2013-12-18 | 2014-04-23 | 宁波市全灵医疗设备股份有限公司 | Navigation device in orthopedics department and preparation method of navigation device |
| CN105779819A (en) * | 2015-12-28 | 2016-07-20 | 北京科技大学 | Molybdenum-titanium alloy neutron transparent material and preparation method thereof |
| CN106676323A (en) * | 2016-11-29 | 2017-05-17 | 广西大学 | High-Mo-content biomedical beta-titanium alloy and preparation method thereof |
| CN108374152A (en) * | 2018-03-28 | 2018-08-07 | 西北有色金属研究院 | A method of preparing molybdenum titanium alloy sputtering target material |
| CN109628924A (en) * | 2019-01-28 | 2019-04-16 | 江苏钛谷科技有限公司 | It is a kind of to prepare titanium alloy technique using plasma melting coating technique |
| CN113278812A (en) * | 2021-05-21 | 2021-08-20 | 东莞市诺德金属科技有限公司 | Vacuum consumable melting method for high-Mo-content Ti-Mo alloy homogeneous ingot |
| CN113957278A (en) * | 2021-10-28 | 2022-01-21 | 西部钛业有限责任公司 | Preparation method of TA22 titanium alloy ingot |
| CN115652142A (en) * | 2022-12-02 | 2023-01-31 | 昆明理工大学 | Novel titanium alloy and preparation method thereof |
| CN116716501A (en) * | 2023-08-07 | 2023-09-08 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium alloy for aerospace and smelting process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102644006A (en) * | 2012-05-17 | 2012-08-22 | 湖南金天钛业科技有限公司 | Preparation method for titanium alloy TC18 through vacuum smelting |
| CN103397225A (en) * | 2013-07-19 | 2013-11-20 | 宝钛特种金属有限公司 | Nickel molybdenum titanium intermediate alloy and preparation method thereof |
| CN103397225B (en) * | 2013-07-19 | 2015-06-10 | 宝钛特种金属有限公司 | Nickel molybdenum titanium intermediate alloy and preparation method thereof |
| CN103735316A (en) * | 2013-12-18 | 2014-04-23 | 宁波市全灵医疗设备股份有限公司 | Navigation device in orthopedics department and preparation method of navigation device |
| CN103735316B (en) * | 2013-12-18 | 2016-01-27 | 宁波德美家医疗科技有限公司 | A kind of orthopedic navigation device and preparation method thereof |
| CN105779819A (en) * | 2015-12-28 | 2016-07-20 | 北京科技大学 | Molybdenum-titanium alloy neutron transparent material and preparation method thereof |
| CN106676323A (en) * | 2016-11-29 | 2017-05-17 | 广西大学 | High-Mo-content biomedical beta-titanium alloy and preparation method thereof |
| CN108374152B (en) * | 2018-03-28 | 2020-06-05 | 西北有色金属研究院 | Method for preparing molybdenum-titanium alloy sputtering target material |
| CN108374152A (en) * | 2018-03-28 | 2018-08-07 | 西北有色金属研究院 | A method of preparing molybdenum titanium alloy sputtering target material |
| CN109628924A (en) * | 2019-01-28 | 2019-04-16 | 江苏钛谷科技有限公司 | It is a kind of to prepare titanium alloy technique using plasma melting coating technique |
| CN113278812A (en) * | 2021-05-21 | 2021-08-20 | 东莞市诺德金属科技有限公司 | Vacuum consumable melting method for high-Mo-content Ti-Mo alloy homogeneous ingot |
| CN113278812B (en) * | 2021-05-21 | 2023-03-03 | 东莞市诺德金属科技有限公司 | Vacuum consumable melting method for high-Mo-content Ti-Mo alloy homogeneous ingot |
| CN113957278A (en) * | 2021-10-28 | 2022-01-21 | 西部钛业有限责任公司 | Preparation method of TA22 titanium alloy ingot |
| CN115652142A (en) * | 2022-12-02 | 2023-01-31 | 昆明理工大学 | Novel titanium alloy and preparation method thereof |
| CN116716501A (en) * | 2023-08-07 | 2023-09-08 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium alloy for aerospace and smelting process thereof |
| CN116716501B (en) * | 2023-08-07 | 2023-10-31 | 成都先进金属材料产业技术研究院股份有限公司 | Titanium alloy for aerospace and smelting process thereof |
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