CN105420579A - High-temperature-resistant tungsten-molybdenum alloy and preparation method thereof - Google Patents
High-temperature-resistant tungsten-molybdenum alloy and preparation method thereof Download PDFInfo
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- CN105420579A CN105420579A CN201510925311.3A CN201510925311A CN105420579A CN 105420579 A CN105420579 A CN 105420579A CN 201510925311 A CN201510925311 A CN 201510925311A CN 105420579 A CN105420579 A CN 105420579A
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- tungsten
- molybdenum
- miramint
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/04—Alloys based on tungsten or molybdenum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/045—Alloys based on refractory metals
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Abstract
The invention provides a high-temperature-resistant tungsten-molybdenum alloy and a preparation method thereof. The high-temperature-resistant tungsten-molybdenum alloy comprises the following components in percentage by weight: 50-80% of tungsten, 35-50% of molybdenum, 10-30% of rhenium, 2-5% of zirconium, and 0.1-1% of impurities. The preparation method comprises the following steps: uniformly mixing the metal powders, dehydrating, sieving and mixing the metal powders in a vacuum, pressing the metal powders and then sintering the metal powders in a smelting furnace, then cooling, and preparing the metal powders to be threadlike or strip-shaped. The preparation method provided by the invention is simple in flow, high in material performance, high in high-temperature resistance, and especially applicable to production for high-temperature-resistant accessories such as lamp filaments of LED vehicle lamps.
Description
Technical field
The present invention relates to field of metallurgy, especially a kind of high temperature resistant miramint and preparation method thereof.
Background technology
Tungsten is important rare metal, is often applied to the heating element of tungsten of hot environment, strut member etc.Heating element of tungsten and tungsten strut member are as the key components and parts of this kind equipment, and performance quality directly affect the application of device, and the mode of heating element of tungsten inefficacy mostly is structural distortion, thus causes the furnace temperature temperature difference to increase, quality product decline.
Summary of the invention
The problem that the invention will solve is to provide a kind of high temperature resistant miramint and preparation method thereof, improves the resistance to elevated temperatures of tungstenalloy, extends its work-ing life, poor to overcome the hot temperature tolerance of tungstenalloy in prior art, cannot meet the problem of development of automobile demand.
For solving the problems of the technologies described above, the technical scheme that the invention adopts is:
A kind of high temperature resistant miramint, comprise the component of following weight percent, tungsten: 50-80%, molybdenum: 20-50%, rhenium: 10-30%, zirconium: 2-5%, impurity: 0.1-1%, above-mentioned each weight percentages of components sum is 100%.
Preferably, comprise the component of following weight percent, tungsten: 52-78%, molybdenum: 21-45%, rhenium: 15-25%, zirconium: 3-4%, impurity: 0.1-1%, above-mentioned each weight percentages of components sum is 100%.
Preferably, comprise the component of following weight percent, tungsten: 55-75%, molybdenum: 25-45%, rhenium: 12-27%, zirconium: 2-5%, impurity: 0.1-1%, above-mentioned each weight percentages of components sum is 100%.
Preferably, comprise the component of following weight percent, tungsten: 55%, molybdenum: 25%, rhenium: 15%, zirconium: 4%, impurity: 1%, above-mentioned each weight percentages of components sum is 100%.
Present invention also offers a kind of method preparing alloy as above, preparation process comprises the following steps:
1) dewater tungsten, molybdenum, zirconium and rhenium metal-powder 1-3 hour in a vacuum, crosses 500 order-1000 mesh sieves;
2) join in V-type mixer by the powder sieved, mixing time is 25-30 hour, and rotating speed is 50-60 rev/min.
3) powder will mixed; cold pressing under protection of inert gas; pressure control range is 200MPa-300Mpa; after compacting, be placed in smelting furnace, at 2100-2600 DEG C; carry out the sintering of 15-18 hour; after sintering, be cooled to 900-1200 DEG C and process, make thread or banded.
Preferably, described rare gas element is the one in argon gas, nitrogen and helium.
The present invention provides the application of a kind of high temperature resistant miramint as above in preparation LED car lamp filament simultaneously.The invention has the beneficial effects as follows:
1, product material of the present invention at high temperature, and intensity is high, can ensure not rupture, and has the characteristic of resistance to High Cycle Fatigue and low cycle facigue.
2, the present invention can reach following technical indicator: uniaxial extension intensity can reach 600-800MPa, and yielding stress can reach 500-700MPa, and hardness can reach 200-240HBS.
Embodiment
Embodiment 1
A kind of high temperature resistant miramint, it is as follows that it respectively organizes weight percent, tungsten: 50%, molybdenum: 30%, rhenium: 15%, zirconium: 4.5%, impurity: 0.5%, and above-mentioned each weight percentages of components sum is 100%.
Preparation method comprises the following steps:
1) tungsten, molybdenum, zirconium and rhenium metal-powder are dewatered 1.5 hours in a vacuum, cross 600 mesh sieves;
2) join in V-type mixer by the powder sieved, mixing time is 25 hours, and rotating speed is 50 revs/min.
3) powder will mixed, colds pressing under argon shield, and pressure control range is 200MPa, after compacting, is placed in smelting furnace, at 2300 DEG C, carries out the sintering of 15 hours, after sintering, is cooled to 900 DEG C and processes, make thread or banded.
At 1000 DEG C, carry out performance measurement, uniaxial extension intensity can reach 600MPa, and yielding stress can reach 650MPa, and hardness can reach 210HBS.
Embodiment 2
A kind of high temperature resistant miramint, it is as follows that it respectively organizes weight percent, tungsten: 55%, molybdenum: 25%, rhenium: 15%, zirconium: 4%, impurity: 1%, and above-mentioned each weight percentages of components sum is 100%.
Preparation method comprises the following steps:
1) dewater tungsten, molybdenum, zirconium and rhenium metal-powder 1-3 hour in a vacuum, crosses 800 mesh sieves;
2) join in V-type mixer by the powder sieved, mixing time is 30 hours, and rotating speed is 60 revs/min.
3) powder will mixed, colds pressing under nitrogen protection, and pressure control range is 280MPa, after compacting, is placed in smelting furnace, at 2500 DEG C, carries out the sintering of 17 hours, after sintering, is cooled to 1200 DEG C and processes, make thread or banded.
At 1200 DEG C, carry out performance measurement, uniaxial extension intensity can reach 750MPa, and yielding stress can reach 630MPa, and hardness can reach 240HBS.
Embodiment 3
A kind of high temperature resistant miramint, it is as follows that it respectively organizes weight percent, tungsten: 60%, molybdenum: 27%, rhenium: 10%, zirconium: 2%, impurity: 1%, and above-mentioned each weight percentages of components sum is 100%.
Preparation method comprises the following steps:
1) tungsten, molybdenum, zirconium and rhenium metal-powder are dewatered 2.5 hours in a vacuum, cross 1000 mesh sieves;
2) join in V-type mixer by the powder sieved, mixing time is 28 hours, and rotating speed is 60 revs/min.
3) powder will mixed, cold pressing under helium protection, pressure control range is 300MPa, after compacting, is placed in smelting furnace, at 2600 DEG C, carries out the sintering of 18 hours, after sintering, is cooled to 900 DEG C and processes, make thread or banded.
At 900 DEG C, carry out performance measurement, uniaxial extension intensity can 650MPa, and yielding stress can reach 600MPa, and hardness can reach 235HBS.
Embodiment 4
A kind of high temperature resistant miramint, it is as follows that it respectively organizes weight percent, tungsten: 65%, molybdenum: 20%, rhenium: 12%, zirconium: 2%, impurity: 1%, and above-mentioned each weight percentages of components sum is 100%.
Preparation method comprises the following steps:
1) tungsten, molybdenum, zirconium and rhenium metal-powder are dewatered 2 hours in a vacuum, cross 9000 mesh sieves;
2) join in V-type mixer by the powder sieved, mixing time is 25 hours, and rotating speed is 55 revs/min.
3) powder will mixed, colds pressing under argon shield, and pressure control range is 300MPa, after compacting, is placed in smelting furnace, at 2400 DEG C, carries out the sintering of 17 hours, after sintering, is cooled to 1100 DEG C and processes, make thread or banded.
At 1100 DEG C, carry out performance measurement, uniaxial extension intensity can 700MPa, and yielding stress can reach 630MPa, and hardness can reach 230HBS.
Above the embodiment of the invention has been described in detail, but described content being only the preferred embodiment of the invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the invention scope change and improve, and all should still belong within this patent covering scope.
Claims (7)
1. a high temperature resistant miramint, is characterized in that: the component comprising following weight percent, tungsten: 50-80%, molybdenum: 20-50%, rhenium: 10-30%, zirconium: 2-5%, impurity: 0.1-1%, and above-mentioned each weight percentages of components sum is 100%.
2. the high temperature resistant miramint of one according to claim 1, is characterized in that: the component comprising following weight percent, tungsten: 52-78%, molybdenum: 21-45%, rhenium: 15-25%, zirconium: 3-4%, impurity: 0.1-1%, above-mentioned each weight percentages of components sum is 100%.
3. the high temperature resistant miramint of one according to claim 1, is characterized in that: the component comprising following weight percent, tungsten: 55-75%, molybdenum: 25-45%, rhenium: 12-27%, zirconium: 2-5%, impurity: 0.1-1%, above-mentioned each weight percentages of components sum is 100%.
4. the high temperature resistant miramint of one according to claim 1, is characterized in that: the component comprising following weight percent, tungsten: 55%, molybdenum: 25%, rhenium: 15%, zirconium: 4%, impurity: 1%, and above-mentioned each weight percentages of components sum is 100%.
5. prepare a method for a kind of miramint according to claims 1 to 4, it is characterized in that: comprise the following steps:
1) dewater tungsten, molybdenum, zirconium and rhenium metal-powder 1-3 hour in a vacuum, crosses 500 order-1000 mesh sieves;
2) join in V-type mixer by the powder sieved, mixing time is 25-30 hour, and rotating speed is 50-60 rev/min;
3) powder will mixed, colds pressing under protection of inert gas, and pressure control range is 200-300Mpa, after compacting; be placed in smelting furnace, at 2100-2600 DEG C, carry out the sintering of 15-18 hour; after sintering, be cooled to 900-1200 DEG C and process, make thread or banded.
6. one according to claim 5 high heat conduction cast aluminium alloy preparation method, is characterized in that: step 1) described in rare gas element be one in argon gas, nitrogen and helium.
7. a kind of high temperature resistant miramint according to claims 1 to 5 application in preparation LED car lamp filament.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105821273A (en) * | 2016-05-31 | 2016-08-03 | 南昌航空大学 | High temperature resisting tungsten-molybdenum alloy and preparation method thereof |
| CN106555094A (en) * | 2016-11-24 | 2017-04-05 | 苏州华意铭铄激光科技有限公司 | A kind of Aero-Space high temperature composite structural member |
| CN106756378A (en) * | 2016-12-17 | 2017-05-31 | 重庆材料研究院有限公司 | A kind of high temperature resistant Flouride-resistani acid phesphatase nuclear field alloy and preparation method and purposes |
| CN114855054A (en) * | 2022-05-13 | 2022-08-05 | 赵克中 | Molybdenum-zirconium-based alloy material and preparation method thereof |
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| JPH0347942A (en) * | 1989-07-14 | 1991-02-28 | Tokyo Tungsten Co Ltd | Sintered body of high hardness tungsten-molybdenum alloy |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105821273A (en) * | 2016-05-31 | 2016-08-03 | 南昌航空大学 | High temperature resisting tungsten-molybdenum alloy and preparation method thereof |
| CN105821273B (en) * | 2016-05-31 | 2017-09-01 | 南昌航空大学 | A kind of high temperature resistant tungsten-molybdenum alloy and preparation method thereof |
| CN106555094A (en) * | 2016-11-24 | 2017-04-05 | 苏州华意铭铄激光科技有限公司 | A kind of Aero-Space high temperature composite structural member |
| CN106756378A (en) * | 2016-12-17 | 2017-05-31 | 重庆材料研究院有限公司 | A kind of high temperature resistant Flouride-resistani acid phesphatase nuclear field alloy and preparation method and purposes |
| CN114855054A (en) * | 2022-05-13 | 2022-08-05 | 赵克中 | Molybdenum-zirconium-based alloy material and preparation method thereof |
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Effective date of registration: 20230815 Address after: No. 9-3-401, No. 39, Gaoxin 6th Road, Binhai Science and Technology Park, Binhai New Area, Tianjin, 300462 Patentee after: Tianjin Chengtian New Energy Co.,Ltd. Address before: 300300 Economic Development Center of Wuxian Street, Dongli District, Tianjin (Room 330, West of Laoyuan Warehouse, Erdaozha South, Wuxian Street, Tianjin) Patentee before: TIANJIN AITIAN AUTO PARTS Co.,Ltd. |
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