CN104928540B - A kind of aluminium niobium silicon titanium intermediate alloy and preparation method thereof - Google Patents
A kind of aluminium niobium silicon titanium intermediate alloy and preparation method thereof Download PDFInfo
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Abstract
A kind of aluminium niobium silicon titanium intermediate alloy and preparation method thereof, is related to a kind of produce intermediate alloy of titanium alloy and preparation method thereof.It is characterized in that the percentage by weight alloy of its alloy is consisted of：Nb:22.0%～28.0%, Si:4.0%～6.0%, Ti:18.0%～22.0%, Al are surplus；Its preparation process adopts metallothermic processes.A kind of aluminium niobium silicon titanium intermediate alloy of the present invention, the metallic compounds with niobium, silicon, titanium, aluminium etc. as main component, enbrittle, breakable feature, shorten titanium alloy production process, make titanium alloy production process more easy to operate., with oxide as raw material, low cost, smelting process are steady for the present invention, and the state that alloy is formed is good；It is added in the form of intermediate alloy in titanium sponge, aluminium shot, reduces the degree of titanium alloy segregation.
Description
Technical field
A kind of aluminium niobium silicon titanium intermediate alloy and preparation method thereof, be related to a kind of for titanium alloy prepare intermediate alloy and its
Preparation method.
Background technology
Titanium alloy is widely used in war industry, aerospace industry and civilian industry, and intermediate alloy is then that production titanium is closed
The important raw and processed materials of gold.At present, titanium alloy intermediate alloy adopts bianry alloy, ternary alloy three-partalloy mostly, with metal simple-substance as raw material
The intermediate alloy of production, production process are complicated, high cost, for reaching performance requirement during use, need to add the conjunction of several binary
Gold or ternary alloy three-partalloy, thus the unstable of properties of product is easily caused, difficulty is brought to production titanium alloy pilot process.
Content of the invention
The purpose of the present invention be for technology Shortcomings in the case of, it is uniform to provide a kind of alloying component, tissue stabilization
Property good, with good toughness, plasticity and Hot Deformation Performance, aluminium niobium silicon titanium intermediate alloy prepared by method simple to operate and
Its preparation method.
The purpose of the present invention is achieved through the following technical solutions.
A kind of aluminium niobium silicon titanium intermediate alloy, it is characterised in that the percentage by weight alloy of its alloy is consisted of：Nb:22.0%
～28.0%, Si:4.0%～6.0%, Ti:18.0%～22.0%, Al are surplus.
A kind of aluminium niobium silicon titanium intermediate alloy of the present invention, it is characterised in that the percentage by weight alloy of its alloy is consisted of：
Nb:24.5%～25.5%, Si:4.5%～5.5%, Ti:19.5%～20.5%, Al are surplus.
The preparation method of a kind of aluminium niobium silicotitanium of the present invention, it is characterised in that its preparation process adopts metallothermic reduction
Method, with aluminium as reducing agent, niobium pentaoxide, silica, titanium dioxide are oxidant, and potassium chlorate is exothermic mixture, and calcirm-fluoride is
Slag former, is smelted by metallothermic processes and obtains final products.
A kind of preparation method of aluminium niobium silicotitanium of the present invention, it is characterised in that described employing metallothermic processes smelting
The aluminium powder of refining process, niobium pentaoxide, silica, titanium dioxide, the weight ratio of potassium chlorate are（0.755～1.035）：
（0.330～0.425）：（0.085～0.115）:（0.330～0.355）:（0.265～0.380）, calcirm-fluoride addition
Measure 5%～20% for dispensing gross weight.
A kind of preparation method of aluminium niobium silicotitanium of the present invention, it is characterised in that described employing metallothermic processes smelting
The raw material loading temperature of refining process is 30～60 DEG C.
The preparation method of a kind of aluminium niobium silicotitanium of the present invention, it is characterised in that described reducing agent, oxidant, heating
Agent and slag former, after being dried, then carry out metallothermic reduction, and drying temperature is 100～120 DEG C, and drying time is 10～12
Hour.
The preparation method of a kind of aluminium niobium silicotitanium of the present invention, it is characterised in that described reducing agent, oxidant, heating
Agent and slag former are powdery.
A kind of aluminium niobium silicotitanium of the present invention is quaternary alloy, as intermediate alloy, is main with aluminium, niobium, silicon, titanium etc.
The metallic compounds of composition, enbrittle, breakable feature, shorten titanium alloy production process, produce titanium alloy
Journey is more easy to operate.Can be used in the production process of titanium alloy with alloy packet form, when smelting titanium alloy with consumable electrode vacuum furnace,
Because spindle composition is uniformly then easily controlled the size of electric current, the preparation of titanium alloy is facilitated.The present invention becomes with oxide as raw material
This is low, and steadily, the state that alloy is formed is good for smelting process；Melting in the form of the intermediate alloy effectively can be dropped in titanium alloy
The degree of low titanium segregation.
Specific embodiment
A kind of aluminium niobium silicon titanium intermediate alloy, the percentage by weight alloy of its alloy are consisted of：Nb:22.0%～28.0%, Si:
4.0%～6.0%, Ti:18.0%～22.0%, Al are surplus；The percentage by weight alloy of its preferable alloy is consisted of：Nb:
24.5%～25.5%, Si:4.5%～5.5%, Ti:19.5%～20.5%, Al are surplus.
Its preparation process adopts metallothermic processes, with aluminium as reducing agent, niobium pentaoxide, silica, titanium dioxide
For oxidant, potassium chlorate is exothermic mixture, and calcirm-fluoride is slag former, is smelted by metallothermic processes and obtains final products.
Concrete operation step includes：
1st, raw material are screened, composition of raw material is determined by analysis；Then raw material are dried,
Drying temperature：100～120 DEG C, drying time：10～12 hours.
2nd, build stove to scale, calculate alloy proportion.
1 embodiment of table, 1 alloy formula table
3rd, loading raw material carries out batch mixing in batch mixer, batch mixing is required：Each raw material must be sufficiently mixed uniformly, protect
Between card raw material, contact is abundant.
4th, last loading smelting, charging temperature are 30～60 DEG C.Come out of the stove later within 24 hours, alloy pig is taken out, obtains product.
Chemical analysis is carried out to taking out alloying component, obtain following result.
2 embodiment of table, 1 alloying component table
Find out from result above, alloying component reaches necessary requirement, and stable components, impurity content is all relatively low.
Embodiment 2～5, is operated by 1 method of embodiment, and difference from Example 1 see the table below.
3 aluminium niobium silicotitanium embodiment of table
Claims (7)
1. a kind of aluminium niobium silicon titanium intermediate alloy, it is characterised in that the percentage by weight alloy of its alloy is consisted of：Nb:22.0%～
28.0%,Si:4.0%～6.0%, Ti:18.0%～22.0%, Al are surplus.
2. a kind of aluminium niobium silicon titanium intermediate alloy according to claim 1, it is characterised in that the percentage by weight of its alloy is closed
Gold is consisted of：Nb:24.5%～25.5%, Si:4.5%～5.5%, Ti:19.5%～20.5%, Al are surplus.
3. a kind of preparation method of aluminium niobium silicon titanium intermediate alloy according to claim 1, it is characterised in that its preparation process
Using metallothermic processes, with aluminium as reducing agent, niobium pentaoxide, silica, titanium dioxide are oxidant, and potassium chlorate is for sending out
Thermit powder, calcirm-fluoride are slag former, are smelted by metallothermic processes and obtain final products.
4. a kind of preparation method of aluminium niobium silicon titanium intermediate alloy according to claim 3, it is characterised in that described employing
The aluminium powder of metallothermic processes smelting process, niobium pentaoxide, silica, titanium dioxide, the weight ratio of potassium chlorate are
（0.755～1.035）：（0.330～0.425）：（0.085～0.115）:（0.330～0.355）:（0.265～
0.380）, calcirm-fluoride addition is the 5%～20% of dispensing gross weight.
5. a kind of preparation method of aluminium niobium silicon titanium intermediate alloy according to claim 3, it is characterised in that described employing
The raw material loading temperature of metallothermic processes smelting process is 30～60 DEG C.
6. a kind of preparation method of aluminium niobium silicon titanium intermediate alloy according to claim 3, it is characterised in that described reduction
Agent, oxidant, exothermic mixture and slag former, after being dried, then carry out metallothermic reduction, and drying temperature is 100～120 DEG C, dries
The dry time is 10～12 hours.
7. a kind of preparation method of aluminium niobium silicon titanium intermediate alloy according to claim 3, it is characterised in that described reduction
Agent, oxidant, exothermic mixture and slag former are powdery.
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| CN109022931B (en) * | 2018-08-14 | 2020-02-21 | 南京云开合金有限公司 | Aluminum-niobium-boron intermediate alloy, and preparation method and application thereof |
| CN111378883A (en) * | 2020-04-21 | 2020-07-07 | 承德天大钒业有限责任公司 | Niobium-iron intermediate alloy and preparation method and application thereof |
| CN112301236B (en) * | 2020-10-27 | 2021-08-31 | 长沙矿冶研究院有限责任公司 | Method for producing high-grade niobium concentrate from niobium rough concentrate |
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Denomination of invention: An Al NB Si Ti master alloy and its preparation method Effective date of registration: 20220620 Granted publication date: 20170308 Pledgee: China Construction Bank Corporation Chengde high tech Zone sub branch Pledgor: CHENGDE TIANDA VANADIUM INDUSTRY Co.,Ltd. Registration number: Y2022130000037 |