CN1508271A - Aluminium-tungsten system intermediate alloy and preparing method thereof - Google Patents
Aluminium-tungsten system intermediate alloy and preparing method thereof Download PDFInfo
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- CN1508271A CN1508271A CNA021449821A CN02144982A CN1508271A CN 1508271 A CN1508271 A CN 1508271A CN A021449821 A CNA021449821 A CN A021449821A CN 02144982 A CN02144982 A CN 02144982A CN 1508271 A CN1508271 A CN 1508271A
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Abstract
The invention is an Al-Wu system medium alloy and preparing method. Its components (wt%): Wu 10-75, Nb 0-75, Mo 0-75, Ti 0-20 and the rest Al. It can adopt out-furnace ignition smelting: the drying temperature of the raw material 70-80 deg.C, when mixing, add with burden residue accounting for 5-15% of total weight of the raw material; also adopt medium-frequency furnace melting: when mixing according to the above proportion, add with antioxidizer and fluxing agent. The smelting is stable, avoiding the phenomenon that the smelting current is sometimes high and sometimes low. When preparing Ti alloy, it is able to add the Wu-Al system medium system in alloy package mode.
Description
Technical field
The present invention relates to alloy technology, specifically a kind of aluminium-tungsten system master alloy and preparation method thereof.
Background technology
In the prior art, the preparation of titanium alloy need add various metal simple-substances, particularly aluminium, tungsten, niobium, molybdenum, titanium metal simple substance respectively, in the fusion process, because above-mentioned metal simple-substance fusing point is inconsistent, fluctuated being not easy of the melting electric current that is applied controlled, and causes the melting instability.Aluminium, tungsten, niobium, molybdenum, titanium metal simple substance if can be added in the titanium alloy with the master alloy form, will avoid similar problem to take place, but also not have the development results of aluminium-tungsten system master alloy at present.
Summary of the invention
In order to overcome above-mentioned deficiency, the objective of the invention is to be to provide a kind of aluminium-tungsten system master alloy and preparation method thereof.
To achieve these goals, technical scheme of the present invention is as follows:
The aluminium-tungsten system master alloy, by weight percentage, its composition is: 10～75 tungsten, 0～75 niobium, 0～75 molybdenum, 0～20 titanium, aluminium surplus;
The preparation method is:
1. the employing stove smelting method of lighting a fire outward: the conventional steps operation, 70～80 ℃ of raw material stoving temperature add the batching bits and reduce heat during batching, reacting balance, alloy forms, and batching bits add-on is 5～15% of a raw material gross weight, and material temperature is controlled in 35～60 ℃ of scopes;
2. intermediate frequency furnace method of fusion: add oxidation inhibitor and fusing assistant during by described proportion ingredient, solve aluminium and tungstenalloy autoxidation problem, the oxidation inhibitor add-on is 3～10% of a raw material gross weight, can also reduce fusing point; The fusing assistant add-on is 3～10% of a raw material gross weight, and the proportioning of aluminium can guarantee aluminium content.
Wherein: with the tungstic oxide is oxidation inhibitor; Fusing assistant can be Potcrate, Sodium Nitrite or tungstic oxide.
The present invention compared with prior art has following beneficial effect:
1. (as the tungsten fusing point is 3500 ℃ to aluminium-tungsten system master alloy fusing point of the present invention far below the fusing point of metal simple-substance, this aluminium tungsten master alloy fusing point is 2100 ℃), make the preparation fusion process of titanium alloy stable, avoided because the metal simple-substance fusing point is inconsistent, the melting electric current that is applied is fluctuated does not allow manageable phenomenon.
2. the course of processing of the present invention is simple, does not need specific installation, when adopting aluminium-tungsten system master alloy of the present invention to prepare titanium alloy, can the alloy packet mode add, and electrical loss is little, cost is low, has made things convenient for preparation.
Embodiment
Embodiment 1
The aluminium-tungsten system master alloy by weight percentage, is produced the AlWNb alloy, and composition is: 30% tungsten, 27% niobium, aluminium surplus;
The preparation method is as follows:
1) adopt the stove smelting method of lighting a fire outward: adopt graphite liner stove, conventional steps, is built stove, is got WO by described proportioning at drying
31kg, Nb
2O
51.010kg, Al 0.88kg, CaF
20.5kg batching (CaF wherein
2Be slag former), evenly batch mixing, shove charge, smelting, cool off, open stove, weigh, finishing, fragmentation, magnetic separation, packing, operating parameters: 75 ± 5 ℃ of raw material stoving temperature, adopt the magnesium chips sparking mode to smelt, cooled off 24 hours, during batching with Potcrate KClO
3Be catalyzer, add-on is 3.4% of a raw material gross weight, and 0.13kg reduces heat with the batching bits, reacting balance, alloy forms, and getting this stove batching bits add-on is 7.85% (amount is 0.30kg) of raw material gross weight, and material temperature is controlled at 40 ℃ makes smelting process steady, alloying is good, adopt jaw crushing control size to 0.25～6.0mm, artificial magnetic separation packs after removing iron contamination.
2) also can adopt the intermediate frequency furnace method of fusion: adopt intermediate frequency furnace, by described proportion ingredient, adding tungstic oxide during batching is that oxidation inhibitor and Potcrate are fusing assistant, solve aluminium and tungstenalloy autoxidation problem, the oxidation inhibitor add-on is 5% of a raw material gross weight, reduce fusing point, the fusing assistant add-on is 3% of a raw material gross weight, and the proportioning of aluminium can guarantee aluminium content; Step is: get W 28kg, and Nb 26kg, Al 46%, W
2O
35kg, KClO
33kg, batching, batch mixing, shove charge, intensification, controlled temperature are at 3000～3600 ℃, and be complete to fusing, the alloy of fusing poured into naturally cooled to room temperature in the mould, opens ingot, beats the oxide film on surface, fragmentation, magnetic separation, packing.
Product alloying of the present invention is good, and homogeneity is strong, can be used as the additive of titanium alloy, and the wheel sheet that starts that is applied to aircraft plays wear-resisting, high temperature resistant effect, but makes impeller non-stop run 5000 hours and indeformable under 5000 degree.
Embodiment 2
Difference from Example 1 is:
Produce the AlWMoTi alloy, composition is: 13% tungsten, 26% molybdenum, 8% titanium, 53% aluminium;
1) adopt the stove smelting method of lighting a fire outward:
Ratio of components: MoO
30.6kg, WO
30.5kg, TiO
20.4kg, Al 3kg, CaF
24.16kg, KClO
30.6kg, batching bits 0.6kg;
2) adopt the intermediate frequency furnace method of fusion: produce the AlWMoTi alloy, composition is: 13% tungsten, 26% molybdenum, 8% titanium, 53% aluminium; Metallurgy proportioning ratio: Mo 2kg, W 1kg, Ti 0.7kg, Al 5.6kg, WO
30.7kg, NaNO
20.6kg.
Embodiment 3
Difference from Example 1 is:
Produce the AlW alloy, composition is: 50% tungsten, 50% aluminium;
1) adopt the stove smelting method of lighting a fire outward:
Ratio of components: WO
31.0kg, Al 1.24kg, CaF
20.40kg, KClO
30.10kg, bits 0.30kg.
2) adopt the intermediate frequency furnace method of fusion: produce the AlW alloy, composition is: 50% tungsten, 50% aluminium; Metallurgy proportioning ratio: Al 1kg, W 1kg; 0.1kg tungstic oxide is an oxidation inhibitor; With the 0.1kg Sodium Nitrite is fusing assistant.
AlW is the alloy characteristics: have certain toughness (it could be smashed with 16 pounds of sledgehammers), broken easily, alloying is good, and homogeneity is strong.
Claims (5)
1. aluminium-tungsten system master alloy, it is characterized in that: by weight percentage, its composition is: 10～75 tungsten, 0～75 niobium, 0～75 molybdenum, 0～20 titanium, aluminium surplus.
2. preparation method according to the described aluminium-tungsten system master alloy of claim 1, it is characterized in that: can adopt the stove smelting method of lighting a fire outward: by described proportion ingredient, operating parameters: 70～80 ℃ of raw material stoving temperature, add the batching bits during batching, add-on is 5～15% of a raw material gross weight.
3. preparation method according to the described aluminium-tungsten system master alloy of claim 1, it is characterized in that: can adopt the intermediate frequency furnace method of fusion: add oxidation inhibitor and fusing assistant during by described proportion ingredient, the oxidation inhibitor add-on is 3～10% of a raw material gross weight, and the fusing assistant add-on is 3～10% of a raw material gross weight; Controlled temperature is at 3000～3600 ℃.
4. according to the preparation method of the described aluminium-tungsten system master alloy of claim 3, it is characterized in that: wherein: be oxidation inhibitor with the tungstic oxide.
5. according to the preparation method of the described aluminium-tungsten system master alloy of claim 3, it is characterized in that: fusing assistant can adopt Potcrate, Sodium Nitrite or tungstic oxide.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 02144982 CN1243842C (en) | 2002-12-20 | 2002-12-20 | Aluminium-tungsten system intermediate alloy and preparing method thereof |
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| CN 02144982 CN1243842C (en) | 2002-12-20 | 2002-12-20 | Aluminium-tungsten system intermediate alloy and preparing method thereof |
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| CN1508271A true CN1508271A (en) | 2004-06-30 |
| CN1243842C CN1243842C (en) | 2006-03-01 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100700A (en) * | 2013-01-21 | 2013-05-15 | 东北大学 | Cladding casting device for aluminum alloy composite ingot casting and cladding casting method |
| CN103695730A (en) * | 2014-01-03 | 2014-04-02 | 肖景波 | Aluminum-molybdenum-tungsten-titanium intermediate alloy and production method thereof |
| CN104674034A (en) * | 2013-11-29 | 2015-06-03 | 宝钢特钢有限公司 | Aluminum-tungsten-niobium three-element intermediate alloy and preparation method thereof |
| CN109280786A (en) * | 2018-11-22 | 2019-01-29 | 河北四通新型金属材料股份有限公司 | A kind of aluminium tungsten intermediate alloy and its production method |
| CN109913709A (en) * | 2019-04-22 | 2019-06-21 | 山西瑞格金属新材料有限公司 | A kind of preparation method of AlMo intermediate alloy |
| CN113881871A (en) * | 2021-09-30 | 2022-01-04 | 中国航发北京航空材料研究院 | Ti-W-Nb intermediate alloy and preparation method thereof |
| CN116287816A (en) * | 2023-01-30 | 2023-06-23 | 承德天大钒业有限责任公司 | High-uniformity aluminum-tantalum-tungsten-titanium intermediate alloy and preparation method and application thereof |
-
2002
- 2002-12-20 CN CN 02144982 patent/CN1243842C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103100700A (en) * | 2013-01-21 | 2013-05-15 | 东北大学 | Cladding casting device for aluminum alloy composite ingot casting and cladding casting method |
| CN104674034A (en) * | 2013-11-29 | 2015-06-03 | 宝钢特钢有限公司 | Aluminum-tungsten-niobium three-element intermediate alloy and preparation method thereof |
| CN103695730A (en) * | 2014-01-03 | 2014-04-02 | 肖景波 | Aluminum-molybdenum-tungsten-titanium intermediate alloy and production method thereof |
| CN109280786A (en) * | 2018-11-22 | 2019-01-29 | 河北四通新型金属材料股份有限公司 | A kind of aluminium tungsten intermediate alloy and its production method |
| CN109913709A (en) * | 2019-04-22 | 2019-06-21 | 山西瑞格金属新材料有限公司 | A kind of preparation method of AlMo intermediate alloy |
| CN113881871A (en) * | 2021-09-30 | 2022-01-04 | 中国航发北京航空材料研究院 | Ti-W-Nb intermediate alloy and preparation method thereof |
| CN116287816A (en) * | 2023-01-30 | 2023-06-23 | 承德天大钒业有限责任公司 | High-uniformity aluminum-tantalum-tungsten-titanium intermediate alloy and preparation method and application thereof |
| CN116287816B (en) * | 2023-01-30 | 2024-06-11 | 承德天大钒业有限责任公司 | High-uniformity aluminum-tantalum-tungsten-titanium intermediate alloy and preparation method and application thereof |
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| Publication number | Publication date |
|---|---|
| CN1243842C (en) | 2006-03-01 |
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