CN1164780C - Process for vacuum induction smelting of Ti-Al-Nb-B alloy - Google Patents
Process for vacuum induction smelting of Ti-Al-Nb-B alloy Download PDFInfo
- Publication number
- CN1164780C CN1164780C CNB011389176A CN01138917A CN1164780C CN 1164780 C CN1164780 C CN 1164780C CN B011389176 A CNB011389176 A CN B011389176A CN 01138917 A CN01138917 A CN 01138917A CN 1164780 C CN1164780 C CN 1164780C
- Authority
- CN
- China
- Prior art keywords
- alloy
- crucible
- melting
- furnace
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000521 B alloy Inorganic materials 0.000 title claims abstract description 19
- 230000006698 induction Effects 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000003723 Smelting Methods 0.000 title claims description 8
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 57
- 239000000956 alloy Substances 0.000 claims abstract description 57
- 238000002844 melting Methods 0.000 claims abstract description 24
- 230000008018 melting Effects 0.000 claims abstract description 24
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 229910052786 argon Inorganic materials 0.000 claims abstract description 11
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 238000010309 melting process Methods 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 238000005516 engineering process Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 9
- 238000007499 fusion processing Methods 0.000 claims description 8
- 238000010894 electron beam technology Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000005275 alloying Methods 0.000 claims description 4
- 230000005611 electricity Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 abstract description 8
- 238000005266 casting Methods 0.000 abstract description 4
- 238000010308 vacuum induction melting process Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229960000935 dehydrated alcohol Drugs 0.000 description 2
- 238000005272 metallurgy Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The present invention discloses a vacuum induction melting process of an Ti-Al-Nb-B alloy. A stable CaO crucible is adopted in thermodynamics to carry out the induction melting of Ti-Al-Nb-B alloy under positive pressure and in the atmosphere of argon. The process specially comprises: industrial pure Al-Nb-1 bars or electronic torch melted Nb-Al-B alloy and 0-Ti are taken according to the required atomic ratio of the Ti-Al-Nb-B alloy; the raw materials are orderly put into a furnace, Al, Nb and Al-B are put into the CaO crucible, and Ti is added into an alloy feed hopper in the medium later period of the melting process; the furnace body is pumped into vacuum, when the degree of vacuum in the furnace is less than 2Pa, argon is supplied to the furnace, and the pressure in the furnace is increased to 1.5 to 2.0 atm; the furnace is charged with electric power, and metal Ti is added into the CaO crucible in the melting process of Al-Nb-Al-B, Al-Nb and Al-B. When the alloy raw materials are completely melted, the casting temperature is regulated to the range of 80 to 120 DEG C, and an alloy liquid is cast into a casting. The intense reaction of the crucible and the melted alloy liquid can be reduced in the melting process by the vacuum induction melting process, and the purity of the melted alloy is enhanced.
Description
Technical field
The present invention relates to vacuum metallurgy technology, specifically a kind of technology of vacuum induction smelting of Ti-Al-Nb-B alloy.
Background technology
In the prior art, the Ti-Al-Nb-B types of material is because fusing point height, active extremely strong adopts conventional MgO, Al
2O
3Crucible vacuum induction melting alloy, even feed the inert atmosphere of certain pressure in the fusion process stove, crucible and molten alloy liquid are also with vigorous reaction, fusion process can not normally carry out.Therefore, advanced plasma melting technology is adopted in the preparation of external alloy at present more, but the cost height of the molten alloy of this technology costs an arm and a leg, and is not suitable for China's national situation.
Summary of the invention
The purpose of this invention is to provide and a kind ofly can reduce the kickback between crucible and molten alloy liquid in the fusion process, improve the technology of the vacuum induction smelting of Ti-Al-Nb-B alloy of molten alloy purity.
Technical solution of the present invention is: with thermodynamically stable CaO crucible, and induction melting Ti-Al-Nb-B reactive alloys under the malleation argon gas atmosphere; Detailed process is:
1) alloy raw material: the atomic ratio by the alloy requirement is got industrial pure Al, Nb-1 bar or electron beam melting Nb, Al-B alloy, 0
#-Ti;
2) shove charge: shove charge in the following order: Al, Nb-1 bar or electron beam melting Nb, Al-B pack in the CaO crucible, and Ti is incorporated in the material alloying bucket, and the back adds in the fusion process;
3) apply malleation: at first body of heater is vacuumized, when the vacuum tightness in the stove was lower than 2Pa, applying argon gas in the stove was between plus-pressure to 0.15～0.2MPa;
4) alloy melting: send electricity, fusing Al, Nb, Al-B in Al, Nb and the Al-B melting process, add metal Ti in the CaO crucible;
5) cast of alloy: with described wholeization of alloy raw material clear after, adjust between teeming temperature to 80～120 ℃ cast alloy liquid.
The principle of the invention is: the CaO crucible that the present invention adopts has very strong thermodynamic stability, can reduce the oxygenation of the alloy melting process that reaction brings between reactive alloys liquid and crucible; Even but like this, in the fusion process molten Ti therewith crucible still following reaction can take place:
Smelting of Ti-Al-Nb-B alloy under the vacuum, Ca steam forces down in the stove, above-mentioned reaction is easier to carry out, the present invention's melting under the positive pressure of inert atmosphere, then greatly reduce the kinetics process of reacting between reactive alloys liquid and crucible, effectively suppress above-mentioned reaction, the pure high alloy of melting is had sizable effect.
Advantage of the present invention is:
1. the CaO crucible of the present invention's employing has good thermodynamic stability, has significantly reduced the reaction between Ti-Al-Nb-B alloy melting process and crucible.
2. the present invention's positive pressure smelting high-melting-point Ti-Al-Nb-B alloy under inert atmosphere effectively suppressed the kinetics process of reactive alloys liquid and crucible reaction, and above-mentioned both combinations have melted out the active Ti-Al-Nb-B alloy that oxygen level is lower than 1400ppm.Melting reactive alloys under the malleation argon gas atmosphere finds no at present and closes report.
3. process for vacuum induction smelting of the present invention, with respect to other vacuum metallurgy technologies (electron beam, plasma melting, vacuum consumable), equipment cost is low, technology is simple, easy to operate, greatly reduce the manufacturing cost of alloy, make the practical application of Ti-Al-Nb-B class alloy in high-tech sector to become a reality.
Embodiment
Embodiment 1
With thermodynamically stable CaO crucible, induction melting Ti-Al-Nb-B reactive alloys under the malleation argon gas atmosphere, detailed process is:
1) crucible of melting adopts CaO ceramic crucible, purity 〉=98.9%;
2) alloy raw material: high-purity N b (O:120ppm), the Al-B alloy and 0 of getting industrial pure Al, electron beam melting by atomic ratio
#-Ti makes raw material, and its atomic ratio is Ti: Al: Nb: B=45: 46: 8: 1;
3) shove charge: shove charge in the following order: Al, Nb, Al-B pack in the CaO crucible, and because of the Ti activity is the strongest, so Ti is incorporated in the material alloying bucket, the back adds in the fusion process;
4) apply malleation: at first body of heater is vacuumized, when the vacuum tightness in the stove equals 1Pa, applying argon gas in the stove, plus-pressure is to 0.15MPa;
5) alloy melting: send electricity, fusing Al, Nb, Al-B in Al, Nb and the Al-B melting process, add metal Ti by described atomic ratio in the CaO crucible;
6) cast of alloy: with described wholeization of alloy raw material clear after, adjust teeming temperature to 80 ℃, cast alloy liquid, the Ti46Al8Nb1B alloy cast ingot.
The concrete preparation process of CaO crucible:
Starting material CaO sand is with high-purity Wingdale CaCO
3Be raw material, adopt high temperature crystallization method, make through broken, screening; Make binding agent isostatic cool pressing forming of green body with dehydrated alcohol, forming pressure 150～240MPa, 2～8 minutes dwell times, sintering schedule is incubated 2～4 hours for to be warming up to 1600～1750 ℃ with stove, and stove is cold, finally obtain the CaO crucible, wherein: CaO grain graininess proportioning in the raw materials of Ca O sand that is adopted: 1～2mm accounts for 40～45% weight, and 0.5～1mm accounts for 15～25% weight, and＜0.5mm accounts for 30～45% weight; Other add granularity be 1～2mm account for gross weight 1～3%ZrO
2Particle is as additive; Its concrete preparation technology is:
The a.CaO grain size proportion: 1～2mm accounts for 40%, 0.5～1mm and accounts for 20%, and＜0.5mm accounts for 40%;
B. forming of green body method: isostatic cool pressing;
C. forming pressure: 200MPa;
D. dwell time: 4 minutes;
E. sintering schedule: be warming up to 1650 ℃ with stove, it is cold to be incubated 2 hours stoves;
F. additive: 2%ZrO
2Particle, its granularity are 1～2mm;
G. binding agent: dehydrated alcohol.
The composition of present embodiment molten alloy sees Table 1:
The composition (weight percent) of table 1 vacuum induction melting Ti46Al8Nb1B alloy
| Sample number | Ti | Al | Nb | B | C | O |
| 1 2 3 | Surplus surplus surplus | 31.80 30.80 30.10 | 18.20 17.70 17.40 | 0.23 0.23 0.23 | 0.029 0.025 0.016 | 0.075 0.036 0.056 |
Annotate: this three stoves alloy is the ingot casting that is cast in the pig mold.
As seen, use through the concise high-purity N b of electron beam (O:120ppm) and make raw material, the oxygen level of the Ti46Al8Nb1B alloy of melting can reach the level of external similar alloy fully less than 1000ppm.
Embodiment 2
With thermodynamically stable CaO crucible and under the malleation argon gas atmosphere induction melting the type reactive alloys, detailed process is:
1) crucible of melting adopts CaO ceramic crucible, purity 〉=98.9%;
2) alloy raw material: get industrial pure Al by atomic ratio, the Nb-1 bar (O:1500ppm) that oxygen level is higher, Al-B alloy, 0
#-Ti, preparation sample 1,2,3, wherein the atomic ratio of sample 1,2 is Ti: Al: Nb: B=45: 46: 8: 1, sample 3 atomic ratios were: Ti: Al: Nb: B=47: 44: 8: 1;
3) shove charge: shove charge in the following order: Al, Nb-1, Al-B pack in the CaO crucible, and because of the Ti activity is the strongest, so Ti is incorporated in the material alloying bucket, the back adds in the fusion process;
4) apply malleation: at first body of heater is vacuumized, when the vacuum tightness in the stove equals 1.9Pa, applying argon gas in the stove, plus-pressure is to 0.2MPa;
5) alloy melting: send electricity, fusing Al, Nb-1, Al-B add metal Ti by described atomic ratio in the CaO crucible in Al, Nb-1 and Al-B melting process;
6) cast of alloy: with described wholeization of alloy raw material clear after, adjust teeming temperature to 120 ℃, cast alloy liquid, the Ti46Al8Nb1B of sample 1,2 and the Ti44Al8Nb1B alloy-steel casting of sample 3.
The composition of present embodiment molten alloy sees Table 2:
The composition (weight percent) of table 2 vacuum induction melting TiAlNbB alloy
| Sample number | Ti | Al | Nb | B | C | O |
| 1 2 3 | Surplus surplus surplus | 27.60 27.70 28.00 | 17.40 16.80 17.90 | -- -- 0.20 | 0.022 0.013 0.024 | 0.14 0.14 0.11 |
Annotate: sample 1,2 is the Ti46Al8Nb1B alloy, and 3 is the Ti44Al8Nb1B alloy, and this three stoves alloy all is cast in Al
2O
3In the formwork.
As seen, with the higher Nb-1 row culture raw material (O:1500ppm) of oxygen level, the Control for Oxygen Content of alloy has reached the level of external similar alloy fully at 1400ppm.
Claims (1)
1. the technology of a vacuum induction smelting of Ti-Al-Nb-B alloy is characterized in that: adopt thermodynamically stable CaO crucible, induction melting Ti-Al-Nb-B reactive alloys under the malleation argon gas atmosphere; Detailed process is:
1) alloy raw material: get industrial pure Al, Nb-1 bar or electron beam melting Nb, Al-B alloy and 0 by the atomic ratio of Ti-Al-Nb-B alloy requirement
#-Ti;
2) shove charge: shove charge in the following order: Al, Nb, Al-B pack in the CaO crucible, and Ti is incorporated in the material alloying bucket, and the back adds in the fusion process;
3) apply malleation: at first body of heater is vacuumized, when the vacuum tightness in the stove was lower than 2Pa, applying argon gas in the stove was between plus-pressure to 0.15～0.2MPa;
4) alloy melting: send electricity, fusing Al, Nb, Al-B in Al, Nb and the Al-B melting process, add metal Ti in the CaO crucible;
5) cast of alloy: with described wholeization of alloy raw material clear after, adjust between teeming temperature to 80～120 ℃, cast alloy liquid obtains the Ti-Al-Nb-B alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011389176A CN1164780C (en) | 2001-12-25 | 2001-12-25 | Process for vacuum induction smelting of Ti-Al-Nb-B alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011389176A CN1164780C (en) | 2001-12-25 | 2001-12-25 | Process for vacuum induction smelting of Ti-Al-Nb-B alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1428446A CN1428446A (en) | 2003-07-09 |
| CN1164780C true CN1164780C (en) | 2004-09-01 |
Family
ID=4674869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011389176A Expired - Lifetime CN1164780C (en) | 2001-12-25 | 2001-12-25 | Process for vacuum induction smelting of Ti-Al-Nb-B alloy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1164780C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150218673A1 (en) * | 2012-08-16 | 2015-08-06 | Brunel University | Al-nb-b master alloy for grain refining |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1319681C (en) * | 2005-08-05 | 2007-06-06 | 哈尔滨工业大学 | Casting method of large size hole defect less TiA1 base alloy ingot |
| CN101121967B (en) * | 2006-08-09 | 2010-11-24 | 中国科学院金属研究所 | Method smelting TiAl-base alloy by vacuum induction |
| CN104651662B (en) * | 2013-11-21 | 2017-07-04 | 安泰科技股份有限公司 | The vacuum induction melting method of titanium-aluminium alloy target material |
| CN103710554B (en) * | 2014-01-23 | 2015-10-28 | 哈尔滨工业大学 | A kind of vacuum pressure infiltration legal system of using is for Ti 2the method of AlNb alloy |
| JP6556554B2 (en) * | 2014-11-04 | 2019-08-07 | 株式会社神戸製鋼所 | Method for deoxidizing Al-Nb-Ti alloy |
| CN104928531B (en) * | 2015-05-12 | 2017-03-01 | 哈尔滨工业大学 | A kind of homogenization TiAl alloy lamellar microstructure and preparation method thereof |
| CN107699738A (en) * | 2017-09-29 | 2018-02-16 | 成都露思特新材料科技有限公司 | A kind of fine-grained TiAl alloy and preparation method thereof, aero-engine, automobile |
-
2001
- 2001-12-25 CN CNB011389176A patent/CN1164780C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150218673A1 (en) * | 2012-08-16 | 2015-08-06 | Brunel University | Al-nb-b master alloy for grain refining |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1428446A (en) | 2003-07-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102436889B (en) | Low-weight-loss neodymium iron boron magnetic material with Titanium, zirconium and gallium compound addition and preparation method thereof | |
| CN110257684B (en) | Preparation process of FeCrCoMnNi high-entropy alloy-based composite material | |
| CN104018028A (en) | High-aluminium and high-silicon cast titanium alloy | |
| CN114535576B (en) | High-entropy alloy refractory to Al and preparation method thereof | |
| CN1164780C (en) | Process for vacuum induction smelting of Ti-Al-Nb-B alloy | |
| CN101597711B (en) | Rare earth-magnesium-transition metal base hydrogen storage metal preparation method | |
| CN1164782C (en) | Vacuum induction smelting process of Ti-Ni and Ti-Ni-Nb marmem | |
| CN113512657A (en) | Preparation method of high-uniformity boron-containing titanium alloy ingot | |
| CN112831680A (en) | Superhard multi-component boride particle reinforced aluminum matrix composite material and preparation method thereof | |
| CN110484741B (en) | Method for preparing high-conductivity and high-strength copper-based material by using vacuum self-consumption method | |
| CN114799155B (en) | Preparation method of ceramic particle reinforced refractory high-entropy alloy | |
| CN105039765B (en) | A kind of preparation method of V Ti Cr Fe hydrogen-storage alloy | |
| CN1255237C (en) | Method for bulk preparing intermetallic compound nanometer powder of titanium and aluminium | |
| CN112795836A (en) | Method for reducing aluminum nitride inclusions in low-density steel through titanium treatment | |
| CN102534272A (en) | Processing method for high vacuum smelting of cobalt base molybdenum magnesium alloy | |
| CN116121589B (en) | High-temperature ultrahigh-strength titanium alloy for additive manufacturing, preparation method and application thereof | |
| CN114318067B (en) | Multi-carbide particle reinforced aluminum matrix composite and preparation method thereof | |
| CN113637870B (en) | High-cleanness TC4 titanium alloy ingot and preparation method thereof | |
| CN114381628B (en) | Refining agent and preparation method and application thereof | |
| CN115478187B (en) | Preparation method of graphene reinforced aluminum alloy matrix composite | |
| CN113215462B (en) | Preparation of W-Ta single-phase solid solution material based on suspension induction melting | |
| CN1157485C (en) | Al-Si-Mn alloy for deoxidizing molten steel and as alloy additive and its preparing process | |
| CN115491523A (en) | Recycling method of waste molybdenum target and preparation method of molybdenum-titanium alloy | |
| CN101967660A (en) | Method for preparing Nb3Al superconducting material by using electrical co-deoxidization method | |
| CN111180720B (en) | Aluminum air battery anode and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20040901 |
|
| CX01 | Expiry of patent term |