EP1379709A1 - Verfahren zur vermeidung von presssitzschäden an radsätzen, insbesondere an radsätzen von schienenfahrzeugen - Google Patents
Verfahren zur vermeidung von presssitzschäden an radsätzen, insbesondere an radsätzen von schienenfahrzeugenInfo
- Publication number
- EP1379709A1 EP1379709A1 EP02704757A EP02704757A EP1379709A1 EP 1379709 A1 EP1379709 A1 EP 1379709A1 EP 02704757 A EP02704757 A EP 02704757A EP 02704757 A EP02704757 A EP 02704757A EP 1379709 A1 EP1379709 A1 EP 1379709A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- wheel
- wheelset
- plasma
- wheel set
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000314 lubricant Substances 0.000 claims abstract description 13
- 239000007787 solid Substances 0.000 claims abstract description 13
- 238000005468 ion implantation Methods 0.000 claims abstract description 12
- 239000000843 powder Substances 0.000 claims abstract description 12
- 238000012423 maintenance Methods 0.000 claims abstract description 8
- 239000012159 carrier gas Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims abstract description 6
- 238000005304 joining Methods 0.000 claims abstract description 5
- 238000005461 lubrication Methods 0.000 claims abstract description 5
- 230000007704 transition Effects 0.000 claims abstract description 5
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 12
- 239000012791 sliding layer Substances 0.000 claims description 6
- 238000002513 implantation Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 231100000252 nontoxic Toxicity 0.000 claims description 2
- 230000003000 nontoxic effect Effects 0.000 claims description 2
- 238000009832 plasma treatment Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 239000002341 toxic gas Substances 0.000 claims description 2
- 239000000428 dust Substances 0.000 claims 1
- 239000002360 explosive Substances 0.000 claims 1
- 231100001261 hazardous Toxicity 0.000 claims 1
- 230000005495 cold plasma Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000004381 surface treatment Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000012495 reaction gas Substances 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 2
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 2
- 239000012044 organic layer Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F15/00—Axle-boxes
- B61F15/20—Details
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
Definitions
- DE-OS 23 46 144 a light metal disc with a steel bandage is connected by a conical seat with two-component adhesive.
- a socket is used which is softer than the shaft and into which Wheel hub is shrunk. This combination is in turn shrunk onto the shaft.
- DE-OS 23 54 206 an adhesive shrink connection is presented.
- the full wheels have a special shape, so that in the case of a press fit or shrink fit, heat input by the block brake up to over 300 ° C. does not cause any changes in track dimensions or loosening of the disks.
- EP 223759 A1 explains a method for producing surfaces for reusable longitudinal seat connections.
- the hardenable steel shafts are parallel in the axial direction, i. H. Traces of hardness running in the direction of the pressing force, in particular laser hardness traces of the solid phase with a martensite structure.
- the hardened surfaces are intended to reduce the friction in the axial direction in order to facilitate the pressing process, while the friction in the radial direction is to be increased by slightly penetrating the hardness traces into the hub surface.
- non-metallic-organic layers are not designed to reduce friction when joining and releasing longitudinal press connections several times. It continues to take place, even if e.g. T. with hardened surfaces, a friction of steel on steel or on cast steel instead, without introducing a sliding layer and effectively countering the fretting corrosion.
- the invention is based on the object of developing a method which protects the wheel seats from pressing damage in a manner which is workplace-friendly and environmentally friendly, and is energy-efficient and cost-effective.
- This procedure should fit into the existing maintenance technology and should do without constructive changes to the types of wheelsets (oversize) and the joining procedure according to UIC 813.
- the method is intended to offer a level of security against long-term breaks that is comparable with the currently used manufacturing and joining methods, and a comparable level of transmission capability for forces and moments.
- the wheelset shaft is rotated or ground longitudinally in its cylindrical and conical end region and the transition that is created is smoothed and / or rounded off, so that the surface of the wheelset shaft is treated in such a way by means of a plasma ion implantation method is carried out that a finely divided powder, in particular a sulfide-containing powder, is applied to the rotating wheel set shaft under atmospheric pressure by a reactive gas as the carrier gas, so that a very hard metallic sliding layer with a low tendency to adhesion is formed in the nano- / micrometer range, whereby at the highest contact pressures between the wheelset shaft and the wheel, solid lubrication that prevents press damage is generated, especially after a lubricant film has been torn off.
- a finely divided powder in particular a sulfide-containing powder
- the wheelset is joined using the longitudinal press process.
- the powder, in particular sulfide-containing powder, applied to the surface of the wheel set shaft by means of a plasma ion implantation process is applied in a sliding layer thickness in the single-digit micrometer range, preferably from 50 nm to> 2 ⁇ m.
- the plasma surface treatment can be carried out several times in the maintenance process.
- the solid lubricant is applied to the rotating wheelset shaft at a feed rate of 5 - 50 mm / min., Preferably 10 mm / min. applied.
- the cylindrical end area of the wheel seat is longitudinally turned or ground with an optimized feed from the outside inwards.
- the conical end area of the wheel seat is turned or ground lengthways from the inside to the outside.
- An emerging transition area is smoothed and / or rounded off.
- the device for carrying out the method is characterized in that the device is preferably a lathe and the longitudinally rotated or ground wheel set shaft is also integrated in a plasma ion implantation system, the plasma discharge of which is fed with reactive gas as a carrier gas and is a finely divided solid lubricant powder under atmospheric pressure applies to the shaft, wherein the plasma discharge is preferably directed at an angle of 90 ° to the rotating shaft.
- the plasma discharge is arranged at a distance of 20-80 mm, preferably 30 mm, from the wheelset shaft and is provided with a feed to the surface of the wheelset shaft, so that the plasma jet can cover a larger area.
- the device for plasma discharge is preferably attached to a support of a lathe or similar device. Through the plasma treatment, the solid lubricant particles are implanted in the surface and cause solid lubrication precisely where the lubricant film of the pressing aid breaks off. With the reaction gas used as the carrier gas, this or its inhibitors diffuse into the surface of the wheel seat and, due to the increase in hardness, additionally increase the material resistance to the occurrence of press marks.
- the wheel set is joined in the longitudinal pressing process, preferably using a molybdenum disulp paste as a pressing aid.
- the pre-treatment results in an adhesion coefficient against loosening in the longitudinal direction vn of max. 0.15 and an adhesion coefficient against slipping v r] of max. Achieved 0.12.
- the ion implantation system can be integrated into the manufacturing process due to the short treatment times (minute range) and the small space and energy requirements. It is possible to repeat the plasma ion implantation if, for example, in the maintenance process. B. a diameter adjustment of the wheel seat is necessary. The process can also be used in both new production and maintenance.
- the wheel seats of a wheel set shaft were treated by means of plasma ion implantation, the plasma implantation system being fastened to the support of a lathe.
- the press fit oversizes were chosen so that a wheel seat embodied the lower limit and a wheel seat the upper limit of the permissible press fit oversizes according to UIC 813.
- the carrier gas is mixed with the solid lubricant particles (3) by a high frequency and converted into an ionized cold plasma state.
- the ionized reaction gas plasma (5) is directed onto the wheel seat (6) of the rotating wheel set shaft (7).
- the entire surface of the wheel seat is treated by the translational movement of the plasma discharge.
- the wheels were pressed onto a wheelset press under production conditions and pressed after 48 hours without an oil expansion process. All in all, the wheel seats were joined and loosened eight times without any pressing calls.
- the wheel set was subjected to 10 million roll-overs with a wheel contact force of 170 kN and lateral force of 60 kN on a rolling test bench. No cracks and no permanent displacement of the wheel occurred during the test.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Coating By Spraying Or Casting (AREA)
- Rolling Contact Bearings (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Lubricants (AREA)
- Platform Screen Doors And Railroad Systems (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10119309 | 2001-04-19 | ||
| DE10119309A DE10119309C1 (de) | 2001-04-19 | 2001-04-19 | Verfahren zur Vermeidung von Presssitzschäden an Radsätzen, insbesondere an Radsätzen von Schienenfahrzeugen |
| PCT/EP2002/002837 WO2002086182A1 (de) | 2001-04-19 | 2002-03-14 | Verfahren zur vermeidung von presssitzschäden an radsätzen, insbesondere an radsätzen von schienenfahrzeugen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1379709A1 true EP1379709A1 (de) | 2004-01-14 |
| EP1379709B1 EP1379709B1 (de) | 2005-06-01 |
Family
ID=7682044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02704757A Expired - Lifetime EP1379709B1 (de) | 2001-04-19 | 2002-03-14 | Verfahren zur vermeidung von presssitzschäden an radsätzen, insbesondere an radsätzen von schienenfahrzeugen |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP1379709B1 (de) |
| AT (1) | ATE296906T1 (de) |
| CZ (1) | CZ305025B6 (de) |
| DE (2) | DE10119309C1 (de) |
| ES (1) | ES2240699T3 (de) |
| WO (1) | WO2002086182A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005026713A1 (de) * | 2005-06-09 | 2006-12-14 | Volkswagen Ag | Verfahren zur Verbindung einer Wellenkomponente mit einer Nabenkomponente und Welle-Nabe-Zusammenbau |
| DE102010022594A1 (de) * | 2010-05-31 | 2011-12-01 | Siemens Aktiengesellschaft | Radsatzwelle für ein schienengebundenes Fahrzeug mit Steinschlagschutz und Verfahren zu deren Herstellung |
| DE202022104384U1 (de) | 2022-08-02 | 2023-11-14 | Gutehoffnungshütte Radsatz Gmbh | Radsatz mit Pressverbindung für Schienenfahrzeuge |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD152972B (de) * | ||||
| US3632368A (en) * | 1970-11-12 | 1972-01-04 | Lubrication Sciences Inc | Lubricant coated bearing and method |
| SE369098B (de) * | 1972-12-19 | 1974-08-05 | Asea Ab | |
| DE2346144B2 (de) * | 1973-09-13 | 1977-07-14 | Klockner-Werke AG, 4100 Duisburg | Leichtradsatz fuer schienenfahrzeuge |
| DE2363403B2 (de) * | 1973-12-20 | 1978-01-19 | Klöckner-Werke AG, 4100 Duisburg | Radsatz fuer schienenfahrzeuge |
| DE2635608C2 (de) * | 1976-08-07 | 1983-11-03 | Erich 7080 Aalen Ranger | Schienenradachse mit zentraler Befestigung aller Konstruktionsteile |
| DE3022826A1 (de) * | 1980-06-19 | 1982-01-21 | Karl Dr.-Ing. 6236 Eschborn Heil | Gerasterte profilschicht |
| DD152972A1 (de) * | 1980-09-11 | 1981-12-16 | Guenter Pursche | Wellen-naben-verbindung,insbesondere pressverbindung mit beschichteten passflaechen |
| JPH0711289B2 (ja) * | 1985-08-15 | 1995-02-08 | 石川島播磨重工業株式会社 | スラスト玉軸受 |
| JPS6252217A (ja) * | 1985-09-02 | 1987-03-06 | Nippon Telegr & Teleph Corp <Ntt> | 軸受 |
| SE450151B (sv) * | 1985-11-21 | 1987-06-09 | Ffv Transmission Ab | Anordning med kontrollerad friktion samt forfarande for att erhalla kontrollerad friktion vid en sadan anordning |
| CS252966B1 (sk) * | 1985-12-09 | 1987-10-15 | Dusan Liska | Vakuová komora pre zariadenie na iónové plátovanie a iónová implantáciu |
| DE3813803A1 (de) * | 1988-04-23 | 1989-11-09 | Glyco Metall Werke | Schichtwerkstoff oder schichtwerkstueck und verfahren zu seiner herstellung |
| US5282985A (en) * | 1993-06-24 | 1994-02-01 | The United States Of America As Represented By The Secretary Of The Air Force | Lubricant coatings |
| US5927861A (en) * | 1995-03-13 | 1999-07-27 | Matsushita Electric Industrial Co., Ltd. | Motor assembly having ion implantation on sliding surfaces |
| DE19624598C1 (de) * | 1996-06-20 | 1997-10-23 | Deutsche Bahn Ag | Verfahren zur Herstellung von Flächen für Preßsitzverbindungen für Radsätze |
| JP3410946B2 (ja) * | 1997-01-09 | 2003-05-26 | 松下電器産業株式会社 | イオン注入装置及び半導体装置の製造方法 |
| JP3357586B2 (ja) * | 1997-10-31 | 2002-12-16 | 株式会社不二機販 | 摺動部の耐摩耗被膜成形物及び被膜成形方法 |
| EP0922786B1 (de) * | 1997-11-25 | 2012-10-24 | Fuji Kihan Co., Ltd. | Verfahren zur Herstellung keramikbeschichteter Produkte |
| JP2963993B1 (ja) * | 1998-07-24 | 1999-10-18 | 工業技術院長 | 超微粒子成膜法 |
| JP2000178720A (ja) * | 1998-12-14 | 2000-06-27 | Sumitomo Metal Mining Co Ltd | 固体潤滑膜付き部材 |
| JP2000239829A (ja) * | 1999-02-17 | 2000-09-05 | Sumitomo Metal Mining Co Ltd | 固体潤滑膜付き部材 |
-
2001
- 2001-04-19 DE DE10119309A patent/DE10119309C1/de not_active Expired - Fee Related
-
2002
- 2002-03-14 DE DE50203281T patent/DE50203281D1/de not_active Expired - Lifetime
- 2002-03-14 WO PCT/EP2002/002837 patent/WO2002086182A1/de not_active Ceased
- 2002-03-14 EP EP02704757A patent/EP1379709B1/de not_active Expired - Lifetime
- 2002-03-14 ES ES02704757T patent/ES2240699T3/es not_active Expired - Lifetime
- 2002-03-14 AT AT02704757T patent/ATE296906T1/de not_active IP Right Cessation
- 2002-03-14 CZ CZ2003-2851A patent/CZ305025B6/cs not_active IP Right Cessation
Non-Patent Citations (1)
| Title |
|---|
| See references of WO02086182A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE50203281D1 (de) | 2005-07-07 |
| CZ305025B6 (cs) | 2015-04-01 |
| DE10119309C1 (de) | 2003-02-06 |
| CZ20032851A3 (en) | 2004-04-14 |
| EP1379709B1 (de) | 2005-06-01 |
| ATE296906T1 (de) | 2005-06-15 |
| ES2240699T3 (es) | 2005-10-16 |
| WO2002086182A1 (de) | 2002-10-31 |
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