CN1804098A - Memory alloy fish bolt fastener material for railway and preparation method thereof - Google Patents
Memory alloy fish bolt fastener material for railway and preparation method thereof Download PDFInfo
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- CN1804098A CN1804098A CN 200610023112 CN200610023112A CN1804098A CN 1804098 A CN1804098 A CN 1804098A CN 200610023112 CN200610023112 CN 200610023112 CN 200610023112 A CN200610023112 A CN 200610023112A CN 1804098 A CN1804098 A CN 1804098A
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Abstract
The preparation method for memory alloy fish bolt fastener material used on railway comprises: preparing material contained Fe, Mn, Si, Cr, Ni, C, Al, and Mo; loading material to melt and form; thermal treating to obtain the target material; according to request, processing the ring-shape fastener. This product is convenient to assembly and reuse for material memory effect, has fastening force beyond the railway standard more than 80%, and shows well stability in static and dynamic tests, and has wide application as low cost.
Description
Technical field
The invention belongs to the material technology field, be specifically related to a kind of memory alloy fish bolt fastener material for railway and preparation method thereof.
Background technology
The easy loose or dislocation of railway track fish (-)bolt web member has a strong impact on train operating safety.Present domestic minority Railway Bureau has introduced Haake bolt or Si Bilao retaining nut that U.S. Haake company produces.But this Haake bolt exists, and poor reliability, cost are too high, installing/dismounting need be used specific equipment, can not be by problems such as use repeatedly.The Si Bilao nut exists fastening force less, and dismounting is inconvenient, can not be by shortcomings such as uses repeatedly.For these reasons, it is low to seek a kind of cost, has good stability, easily processing, the bolt fasteners simple shape is convenient to installation and removal, and the memory alloy fish bolt fastener material for railway that fastening force reaches Ministry of Railways's standard is these those skilled in the art's a goal in research.
Summary of the invention
It is low to the objective of the invention is to propose a kind of cost, has good stability, and installation and removal are convenient in easily processing, and fastening force reaches the memory alloy fish bolt fastener material for railway of Ministry of Railways's standard.
The memory alloy fish bolt fastener material for railway that the present invention proposes, elementary composition by iron (Fe), manganese (Mn), silicon (Si), chromium (Cr), nickel (Ni), carbon (C), aluminium (Al), molybdenum (Mo) etc., the mass percent of its element is as follows:
Manganese 14.6～16.8%
Silicon 5.0～6.2%
Chromium 8.9～12.1%
Nickel 3.4～3.8%
Carbon 0.15～0.43%
Aluminium 0.8～1.2%
Molybdenum 1.5～2.5%
All the other are iron.
Among the present invention, described manganese element adopts a kind of of manganese metal, manganeseirom; Silicon adopts a kind of of Pure Silicon Metal (Pure Silicon Metal is a kind of highly purified elemental silicon raw material), ferro-silicon; Chromium adopts a kind of of chromium metal, ferrochrome; Nickel adopts electrolytic nickel; Carbon adopts coke; Aluminium adopts commercial-purity aluminium; Molybdenum adopts a kind of of metal molybdenum, ferro-molybdenum; Iron adopts technically pure iron.
The preparation method of the memory alloy fish bolt fastener material for railway that the present invention proposes, concrete steps are as follows:
(1) batching: accurately taking by weighing various raw materials according to proportioning raw materials, is fritter with proportioning machine with the raw material crushing of bulk, and fragmentation Control is between 30～80 millimeters;
(2) reinforced: the raw material of iron content, manganese, silicon, chromium, nickel element is put into container, stirred 2-5 minute, place the crucible of vacuum induction furnace, the raw material that will contain aluminium, carbon, molybdenum element again adds in the crucible;
(3) melting: close fire door, vacuumize, pumping speed is 50-70L/s, makes smelting furnace vacuum tightness reach 1.0 * 10
-3～2.0 * 10
-3MmHg ends, and keeps this vacuum tightness constant, adopts the induced current heating, makes the raw material fusing, stirs, and Heating temperature is 1300-1500 ℃, and the time is 1～2 hour, and faradic frequency is 2500Hz, voltage 380V;
(4) moulding: melting casting under the vacuum, must cast rod, wherein, vacuum tightness is 1.0 * 10
-3～2.0 * 10
-3MmHg, smelting temperature are 1300-1500 ℃; To cast rod and forge, and get bar, forging temperature is 800～1000 ℃;
(5) thermal treatment: with the bar training managing that obtains, temperature is 500～650 ℃, and anneal is 6～8 times repeatedly, gets memory alloy fish bolt fastener material for railway.
Among the present invention, to obtain memory alloy fish bolt fastener material for railway and carry out line cutting, car, brill, subsequent process steps such as dig, mill, obtain the circular bolt fasteners product of external diameter 48.10～48.20mm, internal diameter 24.10～24.20mm, high 15.50～15.60mm.
The application of the present invention in the antitheft part of antitheft, the anti-loose part of rail, used for rolling stock bolt connection part and railway field equipment, consumption of the present invention is sizable, this market is very considerable.
Advantage of the present invention is as follows:
(1) cost is low, employing be that common metal is smelted, moulding, rolling and machining etc., following process is simple.
(2) easy installation and removal, under design temperature, because the shape memory alloy self characteristics, the fastening force of iron-base marmem bolt fasteners can be reduced to the degree that mounts and dismounts easily with common tool.
(3) the memorial alloy fastening piece through training managing, utilizes its shape memory effect after dismounting, can be used repeatedly.
(4) fastening force surpasses the railway standard more than 50%, and static and dynamic test results shows, has good stability.
The present invention will greatly protect railway operation and railway with the safety of peripheral hardware, bring good economic benefit to transportation by railroad.
Embodiment
The invention is further illustrated by the following examples.
Embodiment 1
The mass percent of element is as follows:
Manganese 14.6%
Silicon 5.0%
Chromium 8.9%
Nickel 3.4%
Carbon 0.15%
Aluminium 0.8%
Molybdenum 1.5%
Iron 65.65%
Each material component proportioning following (in a stove 20Kg):
Ferromanganese (containing manganese 85%) 3.435Kg
Ferrosilicon (siliceous 75%) 1.333Kg
Ferrochrome (containing chromium 65%) 2.738Kg
Electrolytic nickel 0.680Kg
Coke 0.030Kg
Fine aluminium 0.160Kg
Molybdenum-iron (containing molybdenum 55%) 0.545Kg
Pure iron 11.079Kg
Technological process: prepare burden in the above-mentioned raw materials ratio, put into vacuum induction melting furnace, 1400 ℃ of smelting temperatures watered rod after 2 hours, the long 940mm of gained casting rod, and diameter 60mm, the casting rod forges between 800～1000 ℃ of temperature, gets the bar of diameter 50mm; Bar is carried out 8 times anneal repeatedly between 500～650 ℃ of temperature, make it to obtain shape memory effect preferably, make the circular bolt fasteners of external diameter 48.10mm, internal diameter 24.10mm, high 15.50mm at last.
Embodiment 2
The mass percent of element is as follows:
Manganese 16.8%
Silicon 6.2%
Chromium 12.1%
Nickel 3.8%
Carbon 0.43%
Aluminium 1.2%
Molybdenum 2.5%
Iron 56.97%
Each material component proportioning following (in a stove 20Kg):
Ferromanganese (containing manganese 85%) 3.953Kg
Ferrosilicon (siliceous 75%) 1.653Kg
Ferrochrome (containing chromium 65%) 3.723Kg
Electrolytic nickel 0.760Kg
Coke 0.086Kg
Fine aluminium 0.240Kg
Molybdenum-iron (containing molybdenum 55%) 0.909Kg
Pure iron 8.676Kg
Technological process: in above-mentioned raw materials ratio batching, put into vacuum induction melting furnace, smelting temperature 1350 degree watered rod after 1 hour.The long 340mm of gained casting rod, the casting rod of diameter 100mm, the casting rod forges between 800～1000 ℃ of temperature, gets the bar of diameter 60mm; Bar is carried out 6 times anneal repeatedly between 500～650 ℃ of temperature, make it to obtain shape memory effect preferably, make the circular bolt fasteners of external diameter 48.10mm, internal diameter 24.10mm, high 15.50mm at last.
Embodiment 3
The mass percent of element is as follows:
Manganese 15.7%
Silicon 5.6%
Chromium 10.5%
Nickel 3.6%
Carbon 0.29%
Aluminium 1.0%
Molybdenum 2.0%
Iron 61.31%
Each material component proportioning following (in a stove 20Kg):
Ferromanganese (containing manganese 85%) 3.694Kg
Ferrosilicon (siliceous 75%) 1.493Kg
Ferrochrome (containing chromium 65%) 3.231Kg
Electrolytic nickel 0.720Kg
Coke 0.058Kg
Fine aluminium 0.200Kg
Molybdenum-iron (containing molybdenum 55%) 0.727Kg
Pure iron 9.877Kg
Technological process: in above-mentioned raw materials ratio batching, put into vacuum induction melting furnace, smelting temperature 1380 degree watered rod after 1.5 hours.The long 530mm of gained casting rod, the casting rod of diameter 80mm, the casting rod forges between 800～1000 ℃ of temperature, gets the bar of diameter 55mm; Bar is carried out 6 times anneal repeatedly between 500～650 ℃ of temperature, make it to obtain shape memory effect preferably, make the circular bolt fasteners of external diameter 48.10mm, internal diameter 24.10mm, high 15.50mm.
Claims (5)
1, a kind of memory alloy fish bolt fastener material for railway is characterized in that being made up of iron, manganese, silicon, chromium, nickel, carbon, aluminium, molybdenum element, and the mass percent of its element is as follows:
Manganese 14.6～16.8%
Silicon 5.0～6.2%
Chromium 8.9～12.1%
Nickel 3.4～3.8%
Carbon 0.15～0.43%
Aluminium 0.8～1.2%
Molybdenum 1.5～2.5%
All the other are iron.
2, memory alloy fish bolt fastener material for railway according to claim 1 is characterized in that manganese element adopts a kind of of manganese metal, manganeseirom; Silicon adopts a kind of of Pure Silicon Metal, ferro-silicon; Chromium adopts a kind of of chromium metal, ferrochrome; Nickel adopts electrolytic nickel; Carbon adopts coke; Aluminium adopts commercial-purity aluminium; Molybdenum adopts a kind of of metal molybdenum, ferro-molybdenum; Iron adopts technically pure iron.
3, a kind of preparation method of memory alloy fish bolt fastener material for railway as claimed in claim 1 is characterized in that concrete steps are as follows:
(1) batching: accurately taking by weighing various raw materials according to proportioning raw materials, is fritter with proportioning machine with the raw material crushing of bulk, and lumpiness is 30～80 millimeters;
(2) reinforced: the raw material of iron content, manganese, silicon, chromium, nickel element is put into container, stirred 2-5 minute, place the crucible of vacuum induction furnace, the raw material that will contain aluminium, carbon, molybdenum element again adds in the crucible;
(3) melting: close fire door, vacuumize, pumping speed is 50-70L/s, makes smelting furnace vacuum tightness reach 1.0 * 10
-3～2.0 * 10
-3MmHg keeps this vacuum tightness constant, adopts the induced current heating, makes the raw material fusing, stirs, and Heating temperature is 1300-1500 ℃, and the time is 1～2 hour, and faradic frequency is 2500Hz, voltage 380V;
(4) moulding: melting casting under the vacuum, must cast rod, wherein, vacuum tightness is 1.0 * 10
-3～2.0 * 10
-3MmHg, smelting temperature are 1300-1500 ℃; To cast rod and forge, and get bar, forging temperature is 800～1000 ℃;
(5) thermal treatment: with the bar training managing that obtains, temperature is 500～650 ℃, and anneal is 6～8 times repeatedly, obtains memory alloy fish bolt fastener material for railway.
4, the preparation method of memory alloy fish bolt fastener material for railway according to claim 3 is characterized in that the materials processing that obtains becomes the circular bolt fasteners product of external diameter 48.10～48.20mm, internal diameter 24.10～24.20mm, high 15.50～15.60mm.
5, the application of a kind of memory alloy fish bolt fastener material for railway as claimed in claim 1 in the antitheft part of antitheft, the anti-loose part of rail, used for rolling stock bolt connection part and railway field equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100231124A CN100395370C (en) | 2006-01-05 | 2006-01-05 | Memory alloy fish bolt fastener material for railway and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100231124A CN100395370C (en) | 2006-01-05 | 2006-01-05 | Memory alloy fish bolt fastener material for railway and preparation method thereof |
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| Publication Number | Publication Date |
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| CN1804098A true CN1804098A (en) | 2006-07-19 |
| CN100395370C CN100395370C (en) | 2008-06-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103456A (en) * | 2013-01-17 | 2013-05-15 | 大连海事大学 | Fe-Mn-Si shape memory alloy check bolt and manufacturing and using methods thereof |
| CN103206584A (en) * | 2013-04-24 | 2013-07-17 | 山东大学 | Non-loosened seabed oil pipeline flange connection structure and connection method |
| CN109604945A (en) * | 2018-11-29 | 2019-04-12 | 中国科学院金属研究所 | A kind of preparation method of interference engagement marmem fastener |
| CN115710680A (en) * | 2022-10-28 | 2023-02-24 | 同济大学 | Fe-Mn-Si-Cr-Ni-C series shape memory alloy and preparation method thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT377287B (en) * | 1982-04-13 | 1985-02-25 | Ver Edelstahlwerke Ag | COLD-STRENGING AUSTENITIC MANGANIC STEEL AND METHOD FOR PRODUCING THE SAME |
| US4494988A (en) * | 1983-12-19 | 1985-01-22 | Armco Inc. | Galling and wear resistant steel alloy |
| US5032195A (en) * | 1989-03-02 | 1991-07-16 | Korea Institute Of Science And Technology | FE-base shape memory alloy |
| US5244513A (en) * | 1991-03-29 | 1993-09-14 | Mitsubishi Jukogyo Kabushiki Kaisha | Fe-cr-ni-si shape memory alloys with excellent stress corrosion cracking resistance |
| CN1046969C (en) * | 1994-07-19 | 1999-12-01 | 中国科学院金属研究所 | Iron-manganese-silicon alloy with larger memory effect |
-
2006
- 2006-01-05 CN CNB2006100231124A patent/CN100395370C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103103456A (en) * | 2013-01-17 | 2013-05-15 | 大连海事大学 | Fe-Mn-Si shape memory alloy check bolt and manufacturing and using methods thereof |
| CN103206584A (en) * | 2013-04-24 | 2013-07-17 | 山东大学 | Non-loosened seabed oil pipeline flange connection structure and connection method |
| CN103206584B (en) * | 2013-04-24 | 2015-05-06 | 山东大学 | Non-loosened seabed oil pipeline flange connection structure and connection method |
| CN109604945A (en) * | 2018-11-29 | 2019-04-12 | 中国科学院金属研究所 | A kind of preparation method of interference engagement marmem fastener |
| CN115710680A (en) * | 2022-10-28 | 2023-02-24 | 同济大学 | Fe-Mn-Si-Cr-Ni-C series shape memory alloy and preparation method thereof |
| CN115710680B (en) * | 2022-10-28 | 2024-04-12 | 同济大学 | Fe-Mn-Si-Cr-Ni-C system shape memory alloy and preparation method thereof |
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| CN100395370C (en) | 2008-06-18 |
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Granted publication date: 20080618 Termination date: 20110105 |