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CN102061408A - Method for preparing low-cost titanium alloy - Google Patents

Method for preparing low-cost titanium alloy Download PDF

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Publication number
CN102061408A
CN102061408A CN 201110028440 CN201110028440A CN102061408A CN 102061408 A CN102061408 A CN 102061408A CN 201110028440 CN201110028440 CN 201110028440 CN 201110028440 A CN201110028440 A CN 201110028440A CN 102061408 A CN102061408 A CN 102061408A
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China
Prior art keywords
titanium
alloy
preparation
cost
low
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Pending
Application number
CN 201110028440
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Chinese (zh)
Inventor
赵永庆
吴欢
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Northwest Institute for Non Ferrous Metal Research
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Northwest Institute for Non Ferrous Metal Research
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Priority to CN 201110028440 priority Critical patent/CN102061408A/en
Publication of CN102061408A publication Critical patent/CN102061408A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a method for preparing low-cost titanium alloy. In the method, low-price Fe-Mo intermediate alloy and Al-Mo intermediate alloy are used for replacing expensive alloy elements, titanium leftover materials or defective materials are added in titanium sponge at the same time, and a vacuum consumable electric arc furnace is used for smelting raw materials to prepare the titanium alloy. In the invention, the proportion of the titanium leftover materials or defective materials in the preparation of the alloy is increased, and large-deformation processing and other short-flow processing methods are used at the same time so that the preparation cost of the titanium alloy is reduced by more than 30%.

Description

A kind of preparation method of low-cost titanium alloy
Technical field
The invention belongs to the alloy preparing technical field, be specifically related to a kind of preparation method of low-cost titanium alloy.
Background technology
Titanium or titanium alloy because of have low density, high specific strength, high specific stiffness, high temperature resistant, corrosion-resistant, no magnetic, can weld, excellent performance such as physiologically acceptable, obtain widely applying in fields such as Aeronautics and Astronautics, naval vessels, yet expensive (8-10 that equal specification generally is a steel doubly) of titanium, limited applying of titanium or titanium alloy, especially in the application of civil area.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned the deficiencies in the prior art, and the preparation method of a kind of cost than the low low-cost titanium alloy more than 30% of existing technology cost is provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method of low-cost titanium alloy, it is characterized in that, this method adopts cheap Fe-Mo master alloy and Al-Mo master alloy to replace expensive alloying element, in titanium sponge, add the scrap stock or the defective material of titanium simultaneously, utilize the vacuum consumable electrode arc furnace melting to prepare titanium alloy.
The preparation method of above-mentioned a kind of low-cost titanium alloy is characterized in that, this method specifically may further comprise the steps:
(1) scrap stock or the defective material with titanium mixes cutting with the Fe-Mo master alloy and the Al-Mo master alloy of titanium sponge, cheapness, is pressed into electrode in the alloying ingredient ratio, and the scrap stock of described titanium or defective material account for 10%~30% of titanium sponge gross weight;
(2) place vacuum consumable electrode arc furnace to obtain alloy cast ingot at electrode described in the step (1) through twice melting;
(3) bar is forged in the cogging after surface skin and rising head are removed in lathe turning of alloy cast ingot described in the step (2);
(4) be to be incubated 2h under 900 ℃~950 ℃ the condition with bar described in the step (3), place the titanium alloy that is processed into desired size on the precise forging machine then in temperature.
Precise forging machine adds man-hour described in the above-mentioned steps (4), adopts 60% pass deformation.
The present invention compared with prior art has the following advantages: the present invention adopts cheap Fe-Mo master alloy and Al-Mo master alloy to replace expensive alloying element, in titanium sponge, add the scrap stock or the defective material of titanium simultaneously, utilize vacuum consumable electrode arc furnace melting preparation to contain the novel alloy Ti12LC (Ti-4Al-7Mo-2Fe) and the Ti8LC (Ti-6Al-2Mo-1Fe) of cheap metal element, in the alloy preparation, adopt short flow process working methods such as aximal deformation value processing in the shared ratio increasing titanium scrap stock or defective material, make the preparation cost of titanium alloy reduce more than 30%.
Below by embodiment, technical scheme of the present invention is described in further detail.
Embodiment
Embodiment 1
The low-cost alloy of preparation Ti12LC (Ti-4Al-7Mo-2Fe)
(1) scrap stock or the defective material with titanium mixes cutting with the Fe-Mo master alloy and the Al-Mo master alloy of titanium sponge, cheapness, is pressed into electrode by prepared alloy ratio; The scrap stock of described titanium or defective material account for 20% of titanium sponge gross weight;
(2) place vacuum consumable electrode arc furnace to obtain Φ 360mm alloy cast ingot at electrode described in the step (1) through twice melting;
(3) after removing surface skin and rising head, lathe turning adopt the ordinary method cogging to forge into Φ 120mm bar alloy cast ingot described in the step (2);
(4) be to be incubated 2h under 900 ℃ the condition with bar described in the step (3), place then on the precise forging machine, adopt 60% pass deformation to be processed into the bar of Φ 48mm, obtain Ti12LC (Ti-4Al-7Mo-2Fe) alloy in temperature.
The Ti12LC (Ti-4Al-7Mo-2Fe) of present embodiment preparation is except that the performance of the titanium alloy with conventional working method acquisition, and its preparation cost is lower more than 30% than the preparation cost of existing technology.
Embodiment 2
The low-cost alloy of preparation Ti8LC (Ti-6Al-2Mo-1Fe)
(1) scrap stock or the defective material with titanium mixes cutting with the Fe-Mo master alloy and the Al-Mo master alloy of titanium sponge, cheapness, is pressed into electrode by prepared alloy ratio; The scrap stock of described titanium or defective material account for 20% of titanium sponge gross weight;
(2) place vacuum consumable electrode arc furnace to obtain Φ 360mm alloy cast ingot at electrode described in the step (1) through twice melting;
(3) after removing surface skin and rising head, lathe turning adopt the ordinary method cogging to forge into Φ 120mm bar alloy cast ingot described in the step (2);
(4) be to be incubated 2h under 950 ℃ the condition with bar described in the step (3), place then on the precise forging machine, adopt 60% pass deformation to be processed into the bar of Φ 48mm, obtain Ti8LC (Ti-6Al-2Mo-1Fe) alloy in temperature.
The Ti8LC (Ti-6Al-2Mo-1Fe) of present embodiment preparation is except that the performance of the titanium alloy with conventional working method acquisition, and its preparation cost is lower more than 30% than the preparation cost of existing technology.
Embodiment 3
The low-cost alloy of preparation Ti12LC (Ti-4Al-7Mo-2Fe)
(1) scrap stock or the defective material with titanium mixes cutting with the Fe-Mo master alloy and the Al-Mo master alloy of titanium sponge, cheapness, is pressed into electrode by prepared alloy ratio; The scrap stock of described titanium or defective material account for 10% of titanium sponge gross weight;
(2) place vacuum consumable electrode arc furnace to obtain Φ 360mm alloy cast ingot at electrode described in the step (1) through twice melting;
(3) after removing surface skin and rising head, lathe turning adopt the ordinary method cogging to forge into Φ 120mm bar alloy cast ingot described in the step (2);
(4) be to be incubated 2h under 925 ℃ the condition with bar described in the step (3), place then on the precise forging machine, adopt 60% pass deformation to be processed into the bar of Φ 48mm, obtain Ti12LC (Ti-4Al-7Mo-2Fe) alloy in temperature.
The Ti12LC (Ti-4Al-7Mo-2Fe) of present embodiment preparation is except that the performance of the titanium alloy with conventional working method acquisition, and its preparation cost is lower more than 30% than the preparation cost of existing technology.
Embodiment 4
The low-cost alloy of preparation Ti8LC (Ti-6Al-2Mo-1Fe)
(1) scrap stock or the defective material with titanium mixes cutting with the Fe-Mo master alloy and the Al-Mo master alloy of titanium sponge, cheapness, is pressed into electrode by prepared alloy ratio; The scrap stock of described titanium or defective material account for 30% of titanium sponge gross weight;
(2) place vacuum consumable electrode arc furnace to obtain Φ 360mm alloy cast ingot at electrode described in the step (1) through twice melting;
(3) after removing surface skin and rising head, lathe turning adopt the ordinary method cogging to forge into Φ 120mm bar alloy cast ingot described in the step (2);
(4) be to be incubated 2h under 900 ℃ the condition with bar described in the step (3), place then on the precise forging machine, adopt 60% pass deformation to be processed into the bar of Φ 48mm, obtain Ti8LC (Ti-6Al-2Mo-1Fe) alloy in temperature.
The Ti8LC (Ti-6Al-2Mo-1Fe) of present embodiment preparation is except that the performance of the titanium alloy with conventional working method acquisition, and its preparation cost is lower more than 30% than the preparation cost of existing technology.
The above; it only is preferred embodiment of the present invention; be not that the present invention is imposed any restrictions, everyly any simple modification that above embodiment did, change and equivalence changed, all still belong in the protection domain of technical solution of the present invention according to the technology of the present invention essence.

Claims (3)

1. the preparation method of a low-cost titanium alloy, it is characterized in that, this method adopts cheap Fe-Mo master alloy and Al-Mo master alloy to replace expensive alloying element, adds the scrap stock or the defective material of titanium simultaneously in titanium sponge, utilizes the vacuum consumable electrode arc furnace melting to prepare titanium alloy.
2. the preparation method of a kind of low-cost titanium alloy according to claim 1 is characterized in that, this method specifically may further comprise the steps:
(1) scrap stock or the defective material with titanium mixes cutting with the Fe-Mo master alloy and the Al-Mo master alloy of titanium sponge, cheapness, is pressed into electrode in the alloying ingredient ratio, and the scrap stock of described titanium or defective material account for 10%~30% of titanium sponge gross weight;
(2) place vacuum consumable electrode arc furnace to obtain alloy cast ingot at electrode described in the step (1) through twice melting;
(3) bar is forged in the cogging after surface skin and rising head are removed in lathe turning of alloy cast ingot described in the step (2);
(4) be to be incubated 2h under 900 ℃~950 ℃ the condition with bar described in the step (3), place the titanium alloy that is processed into desired size on the precise forging machine then in temperature.
3. the preparation method of a kind of low-cost titanium alloy according to claim 2 is characterized in that, precise forging machine adds man-hour described in the step (4), adopts 60% pass deformation.
CN 201110028440 2011-01-26 2011-01-26 Method for preparing low-cost titanium alloy Pending CN102061408A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102586639A (en) * 2012-03-16 2012-07-18 广州有色金属研究院 Method for preparing titanium alloy through high-speed pressing formation
CN102965529A (en) * 2012-11-30 2013-03-13 上海大学 Preparation method of short-process titanium alloy Ti-Ni-Nb
CN103649350A (en) * 2012-05-30 2014-03-19 韩国机械研究院 Beta titanium alloy with low elasticity and high strength
CN106086485A (en) * 2016-06-30 2016-11-09 洛阳双瑞精铸钛业有限公司 A kind of melting recovery method of titanium alloy defective material transformation of ownership xenogenesis trade mark titanium alloy
CN109930030A (en) * 2019-04-16 2019-06-25 西部钛业有限责任公司 A kind of alpha-beta type is high-strength, high impact toughness titanium alloy and preparation method thereof

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Publication number Priority date Publication date Assignee Title
US5294267A (en) * 1992-12-04 1994-03-15 Titanium Metals Corporation Metastable beta titanium-base alloy
CN1584079A (en) * 2004-05-24 2005-02-23 西北有色金属研究院 Low-cost superplastic titanium alloy
CN101348876A (en) * 2008-09-10 2009-01-21 西北有色金属研究院 Low cost high strength titanium alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5294267A (en) * 1992-12-04 1994-03-15 Titanium Metals Corporation Metastable beta titanium-base alloy
CN1584079A (en) * 2004-05-24 2005-02-23 西北有色金属研究院 Low-cost superplastic titanium alloy
CN101348876A (en) * 2008-09-10 2009-01-21 西北有色金属研究院 Low cost high strength titanium alloy

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Title
《材料导报》 20030430 赵永庆等 钛合金的应用和低成本制造技术 5-7 1-2 第17卷, 第4期 2 *
《特种铸造及有色合金》 20101031 康凤等 变形条件对低成本Ti8LC钛合金组织的影响 962-965 3 第30卷, 第10期 2 *
《稀有金属》 20040229 赵永庆等 低成本钛合金研究 66-69 1-3 第28卷, 第1期 2 *
《精密成形工程》 20100930 舒大禹等 Ti8LC合金热处理力学性能的回归分析 1-5 2 第2卷, 第5期 2 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102586639A (en) * 2012-03-16 2012-07-18 广州有色金属研究院 Method for preparing titanium alloy through high-speed pressing formation
CN103649350A (en) * 2012-05-30 2014-03-19 韩国机械研究院 Beta titanium alloy with low elasticity and high strength
CN102965529A (en) * 2012-11-30 2013-03-13 上海大学 Preparation method of short-process titanium alloy Ti-Ni-Nb
CN102965529B (en) * 2012-11-30 2014-12-03 上海大学 Preparation method of short-process titanium alloy Ti-Ni-Nb
CN106086485A (en) * 2016-06-30 2016-11-09 洛阳双瑞精铸钛业有限公司 A kind of melting recovery method of titanium alloy defective material transformation of ownership xenogenesis trade mark titanium alloy
CN106086485B (en) * 2016-06-30 2018-04-24 洛阳双瑞精铸钛业有限公司 A kind of melting recovery method of titanium alloy defective material transformation of ownership xenogenesis trade mark titanium alloy
CN109930030A (en) * 2019-04-16 2019-06-25 西部钛业有限责任公司 A kind of alpha-beta type is high-strength, high impact toughness titanium alloy and preparation method thereof

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Application publication date: 20110518