CN102864348A - Aluminum lithium alloy for sleeper - Google Patents
Aluminum lithium alloy for sleeper Download PDFInfo
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- CN102864348A CN102864348A CN2012103542084A CN201210354208A CN102864348A CN 102864348 A CN102864348 A CN 102864348A CN 2012103542084 A CN2012103542084 A CN 2012103542084A CN 201210354208 A CN201210354208 A CN 201210354208A CN 102864348 A CN102864348 A CN 102864348A
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- sleeper
- alloy
- lithium alloy
- argon gas
- aluminum lithium
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Abstract
The invention discloses aluminum lithium alloy for a sleeper. The aluminum lithium alloy comprises the following ingredients by weight: 5%-12% of ferrum, 5%-7% of copper, 3%-5% of lithium, 0.3%-0.5% of zirconium and the balance of aluminum. Aluminum lithium alloy materials have advantages of low density, high elasticity modulus, high specific strength and high specific stiffness performance; and compared with general reinforced concrete sleepers, and the sleeper made of the aluminum lithium alloy materials is light in character, long in service life, free needs of frequent change, strong in corrosion resistance, and applicable to road bases of warm and hot regions where rainwater is a lot such as the southern part of the country.
Description
Technical field
The present invention relates to a kind of sleeper material.
Background technology
Sleeper claims again sleeper, also is a kind of of railway casting.Material therefor is not only timber only now, therefore is more science of sleeper.Although the apperance dullness of sleeper is standardized, unprepossessing in appearance, can its effect is not little.Sleeper should supporting rail, and the position that keeps again rail also will pass to railway roadbed to the immense pressure that the rail transmission comes again.It must possess certain snappiness and elasticity, and is hard not all right, soft also not all right.Train is through out-of-date, and it can suitably be out of shape with compensator or trimmer pressure, but train must restore to the original state later as far as possible.
Concrete sleeper is with its long service life, and stability is high, and the maintenance work amount is little, and damage rate and the condemnation factor advantage more much lower than sleeper favored by various countries.On gapless track, Steel Concrete Sleeper on average carries 15 ~ 20% than the stability of sleeper, therefore, is particularly useful for the High-Speed Passenger transport line.All lay it such as the Shinkansen of Japan, Muscovite high-spe-ed trunk line.
Yet Steel Concrete Sleeper also has shortcoming, and especially the weight ratio sleeper is much bigger.Such as, every of the Steel Concrete Sleeper of Britain weighs 285 kilograms, and the U.S. weighs 280 kilograms, and Germany more also has 230 kilograms.So, at unsteady roadbed and newly fill out roadbed etc. and locate and should not adopt; Because its concrete elastic is poor, the location of frost heave is arranged in the winter time, generally do not allow to adopt.
At present, use a kind of Plastic sleeper on probation of the maximum U.S. of sleeper.The erosion resistance of the Plastic sleeper of the polyethylene manufacturing that this employing is reclaimed is higher than sleeper more than three times, and more easily makes man-hour its surface become " hair " adding, and is installed on the roadbed and can slide.The 3rd advantage is easy for installation, can directly use the equipment identical with sleeper and fastening piece.But the ultimate compression strength of existing Plastic sleeper is not very optimistic.
Summary of the invention
The technical problem to be solved in the present invention is to overcome existing defective, and light weight, long sleeper alloy material of life-span are provided.
Purpose of the present invention is come specific implementation by the following technical programs:
A kind of sleeper Al-Li alloy, its composition is by weight percentage: iron 5%-12%, copper 5%-7%, lithium 3%-5%, zirconium 0.3%-0.5%, the aluminium of surplus.
The composition of above-mentioned Al-Li alloy is preferably by significant percentage: iron 7.5%, copper 5.8%, lithium 3.5%, zirconium 0.5%, the aluminium of surplus.
The above-mentioned sleeper preparation method of Al-Li alloy is characterized in that: adopt following steps:
Step 1, put into vacuum induction melting after each metal mixed by proportional quantity, smelting temperature is 800 ℃～1000 ℃, and vacuum tightness is 1 * 10
-3--0.5 * 10
-2Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2-5ml ∕ s.
Further, the smelting temperature in the described step 1 is 870 ℃, and vacuum tightness is 0.8 * 10
-3Pa.
Further, the argon gas stream in the described step 2 is controlled at 2.5ml ∕ s.
Beneficial effect of the present invention is:
Al-Li alloy material provided by the present invention has the characteristics of low density, high elastic coefficient, high specific strength and high specific stiffness performance, the quality of the more general Steel Concrete Sleeper of sleeper of employing Al-Li alloy material is slim and graceful, long service life, need not frequently tired the replacing, erosion resistance is strong, is more suitable in the roadbed of the many thermal zones of the rainwater such as south.
Embodiment
Below the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.
Embodiment 1:
A kind of sleeper Al-Li alloy, its composition is by weight percentage: iron 7.5%, copper 5.8%, lithium 3.5%, zirconium 0.5%, the aluminium of surplus.
Above-mentioned sleeper comprises the steps: with the preparation method of Al-Li alloy
Step 1, put into vacuum induction melting after each metal mixed by proportional quantity, smelting temperature is 870 ℃, and vacuum tightness is 0.8 * 10
-3Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2.5ml ∕ s.
Embodiment 2:
A kind of sleeper Al-Li alloy, its composition is by weight percentage: iron 5%, copper 5%, lithium 3%, zirconium 0.3%, the aluminium of surplus.
Above-mentioned sleeper comprises the steps: with the preparation method of Al-Li alloy
Step 1, put into vacuum induction melting after each metal mixed by proportional quantity, smelting temperature is 870 ℃, and vacuum tightness is 0.8 * 10
-3Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2.5ml ∕ s.
Embodiment 3:
A kind of sleeper Al-Li alloy, its composition is by weight percentage: iron 12%, copper 7%, lithium 5%, zirconium 0.5%, the aluminium of surplus.
Above-mentioned sleeper comprises the steps: with the preparation method of Al-Li alloy
Step 1, put into vacuum induction melting after each metal mixed by proportional quantity, smelting temperature is 870 ℃, and vacuum tightness is 0.8 * 10
-3Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2.5ml ∕ s.
Embodiment 4:
A kind of sleeper Al-Li alloy, its composition is by weight percentage: iron 7.5%, copper 5.8%, lithium 3.5%, zirconium 0.5%, the aluminium of surplus.
Above-mentioned sleeper comprises the steps: with the preparation method of Al-Li alloy
Step 1, put into vacuum induction melting after each metal mixed by proportional quantity, smelting temperature is 800 ℃, and vacuum tightness is 0.5 * 10
-2Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 5ml ∕ s.
Embodiment 5:
A kind of sleeper Al-Li alloy, its composition is by weight percentage: iron 7.5%, copper 5.8%, lithium 3.5%, zirconium 0.5%, the aluminium of surplus.
Above-mentioned sleeper comprises the steps: with the preparation method of Al-Li alloy
Step 1, put into vacuum induction melting after each metal mixed by proportional quantity, smelting temperature is 1000 ℃, and vacuum tightness is 1 * 10
-3Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2ml ∕ s
Embodiment 6:
A kind of sleeper Al-Li alloy, its composition is by weight percentage: iron 7.5%, copper 5.8%, lithium 3.5%, zirconium 0.5%, the aluminium of surplus.
Above-mentioned sleeper comprises the steps: with the preparation method of Al-Li alloy
Step 1, put into vacuum induction melting after each metal mixed by proportional quantity, smelting temperature is 1000 ℃, and vacuum tightness is 0.5 * 10
-2Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 3ml ∕ s.
The above only is the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment the present invention is had been described in detail, for a person skilled in the art, it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. sleeper Al-Li alloy, it is characterized in that: the composition of described Al-Li alloy is by weight percentage: iron 5%-12%, copper 5%-7%, lithium 3%-5%, zirconium 0.3%-0.5%, the aluminium of surplus.
2. sleeper Al-Li alloy according to claim 1, it is characterized in that: the composition of described Al-Li alloy by significant percentage is: iron 7.5%, copper 5.8%, lithium 3.5%, zirconium 0.5%, the aluminium of surplus.
3. sleeper according to claim 1 and 2 is characterized in that: adopt following steps with the preparation method of Al-Li alloy:
Step 1, put into vacuum induction melting after each metal mixed by proportional quantity, smelting temperature is 800 ℃～1000 ℃, and vacuum tightness is 1 * 10
-3--0.5 * 10
-2Pa;
Cast under the protection of argon gas after step 2, the melting, argon gas stream is controlled at 2-5ml ∕ s.
4. sleeper according to claim 3 is with the preparation method of Al-Li alloy, and it is characterized in that: the smelting temperature in the described step 1 is 870 ℃, and vacuum tightness is 0.8 * 10
-3Pa.
5. sleeper according to claim 3 is with the preparation method of Al-Li alloy, and it is characterized in that: the argon gas stream in the described step 2 is controlled at 2.5ml ∕ s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103542084A CN102864348A (en) | 2012-09-21 | 2012-09-21 | Aluminum lithium alloy for sleeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103542084A CN102864348A (en) | 2012-09-21 | 2012-09-21 | Aluminum lithium alloy for sleeper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102864348A true CN102864348A (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103542084A Pending CN102864348A (en) | 2012-09-21 | 2012-09-21 | Aluminum lithium alloy for sleeper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290270A (en) * | 2013-05-15 | 2013-09-11 | 锡山区羊尖泓之盛五金厂 | Aluminum-lithium alloy for automobile hub and preparation process of aluminum-lithium alloy |
| CN105544313A (en) * | 2014-10-30 | 2016-05-04 | 株洲时代新材料科技股份有限公司 | Lattice-shaped glass fiber reinforced plastic rail sleeper |
| CN105648283A (en) * | 2016-03-31 | 2016-06-08 | 上海交通大学 | Low-density and high-rigidity cast aluminum-lithium alloy and method for preparing same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4806174A (en) * | 1984-03-29 | 1989-02-21 | Aluminum Company Of America | Aluminum-lithium alloys and method of making the same |
| US20070181229A1 (en) * | 2005-12-20 | 2007-08-09 | Bernard Bes | High fracture toughness aluminum-copper-lithium sheet or light-gauge plates suitable for fuselage panels |
| CN102560198A (en) * | 2010-12-13 | 2012-07-11 | 中国科学院金属研究所 | Active aluminum-rich alloy for preparing high purity hydrogen through hydrolysis and preparation method thereof |
-
2012
- 2012-09-21 CN CN2012103542084A patent/CN102864348A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4806174A (en) * | 1984-03-29 | 1989-02-21 | Aluminum Company Of America | Aluminum-lithium alloys and method of making the same |
| US20070181229A1 (en) * | 2005-12-20 | 2007-08-09 | Bernard Bes | High fracture toughness aluminum-copper-lithium sheet or light-gauge plates suitable for fuselage panels |
| CN102560198A (en) * | 2010-12-13 | 2012-07-11 | 中国科学院金属研究所 | Active aluminum-rich alloy for preparing high purity hydrogen through hydrolysis and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290270A (en) * | 2013-05-15 | 2013-09-11 | 锡山区羊尖泓之盛五金厂 | Aluminum-lithium alloy for automobile hub and preparation process of aluminum-lithium alloy |
| CN105544313A (en) * | 2014-10-30 | 2016-05-04 | 株洲时代新材料科技股份有限公司 | Lattice-shaped glass fiber reinforced plastic rail sleeper |
| CN105544313B (en) * | 2014-10-30 | 2017-04-19 | 株洲时代新材料科技股份有限公司 | Lattice-shaped glass fiber reinforced plastic rail sleeper |
| CN105648283A (en) * | 2016-03-31 | 2016-06-08 | 上海交通大学 | Low-density and high-rigidity cast aluminum-lithium alloy and method for preparing same |
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| PB01 | Publication | ||
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Application publication date: 20130109 |