SE437354B - JERNVEGSHJUL - Google Patents

JERNVEGSHJUL

Info

Publication number
SE437354B
SE437354B SE8300015A SE8300015A SE437354B SE 437354 B SE437354 B SE 437354B SE 8300015 A SE8300015 A SE 8300015A SE 8300015 A SE8300015 A SE 8300015A SE 437354 B SE437354 B SE 437354B
Authority
SE
Sweden
Prior art keywords
wheel
flange
hardened
pressure
tread
Prior art date
Application number
SE8300015A
Other languages
Swedish (sv)
Other versions
SE440206B (en
SE8300015D0 (en
SE8300015L (en
Inventor
T Ernerudh
A Hassellof
C-G Lenasson
Original Assignee
Asea Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Asea Ab filed Critical Asea Ab
Priority to SE8300015A priority Critical patent/SE440206B/en
Publication of SE8300015D0 publication Critical patent/SE8300015D0/en
Priority to DE8383112977T priority patent/DE3371968D1/en
Priority to EP83112977A priority patent/EP0115046B1/en
Priority to NO834882A priority patent/NO154992C/en
Priority to DK002184A priority patent/DK157180C/en
Publication of SE8300015L publication Critical patent/SE8300015L/en
Publication of SE437354B publication Critical patent/SE437354B/en
Publication of SE440206B publication Critical patent/SE440206B/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B17/00—Wheels characterised by rail-engaging elements
    • B60B17/0055—Wheels characterised by rail-engaging elements with non-elastic tyres (e.g. of particular profile or composition)
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Tires In General (AREA)
  • Platform Screen Doors And Railroad Systems (AREA)
  • Machines For Laying And Maintaining Railways (AREA)

Description

m 15 26 25 so» sszooo15-s~ 1 I Känt är även att hårda fläns och löpbana, men detta medför även minskad friktion löpbana - räls. m 15 26 25 so »sszooo15-s ~ 1 I It is also known that hard flange and tread, but this also entails reduced friction tread - rails.

~ Vanliga högkolhaltiga stål har vissa nackdelar som material i järnvägshjul, svårighet att få lämplig friktion till räls vid löpbana och samtidigt hög slitstyrka i flänsens insida.Ordinary high-carbon steels have certain disadvantages such as material in railway wheels, difficulty in obtaining suitable friction for rails at the running track and at the same time high wear resistance in the inside of the flange.

Föreliggande uppfinning utgör en vidareutveckling av denna kända teknik och en lösning på ovan anförda problem! Järnvägshjulet enligt uppfinningen kännetecknas därav, att hjulet är utfört i s k Hadfieldstål med 12-16 % Mn, _0,8 % C, 5 1,0 % V samt Ni och Mo, eller lågkolhaltigt stål med S 0,10 % C, IV Il\ 1,5 % Cr samt eventuellt tillsatser av Mn, Ni och/eller Mo, och att endast flänsens mot löpbanan riktade del-är hårdgjord vid en temperatur un- der 600 °c.The present invention is a further development of this prior art and a solution to the above problems! The railway wheel according to the invention is characterized in that the wheel is made of Hadfield steel with 12-16% Mn, _.8% C, 1.0% V and Ni and Mo, or low carbon steel with S 0.10% C, IV II \ 1.5% Cr and possible additions of Mn, Ni and / or Mo, and that only the part of the flange facing the tread is hardened at a temperature below 600 ° c.

Man får med detta material med sedvanlig bashärdning en viss, lämplig frik- tion Iöpbana - räls, och materialet är mycket lämpligt för järnvägshjul.With this material with the usual base hardening you get a certain, suitable friction Iöpbana - rails, and the material is very suitable for railway wheels.

Samtidigt ger detta material möjlighet till hårdgöring av enbart flänsens mot löpbanan riktade del i form av kallhårdgöring. Ett varmhärdat lågkol- haltigt stål eller Hadfieldstål kan ej ytterligare hârdgöras genom härd- ning. Man har alltså för dessa hjul, som är avsedda för framförallt trak- tionsfordon men även för andra rälsgående fordon, kraftigt kunnat nedbringa slitaget på det i slitageavseende mest kritiska stället på hjulet.At the same time, this material provides the opportunity for hardening of only the part of the flange facing the tread in the form of cold hardening. A thermoset low-carbon steel or Hadfield steel can not be further hardened by hardening. Thus, for these wheels, which are intended primarily for traction vehicles but also for other rail vehicles, it has been possible to significantly reduce wear on the most critical point of wear on the wheel in terms of wear.

Man slipper genom_kallhärdningen (under 600 OC) den ovannämnda övergångs- zonen med dess nackdelar. Det är dessutom lättare att svarva om ett järn* vägshjul som ej är varmhärdat. Man slipper spröda flänsar genom begräns- ningen av härdzonen.The above-mentioned transition zone with its disadvantages is avoided by cold-curing (below 600 OC). It is also easier to turn an iron * road wheel that is not thermoset. It avoids brittle flanges by limiting the core zone.

Som exempel på lämplig kallhårdgöringsmetod kan nämnas peening (kulbläst- ring eller hammarpeening), tryckpressning, tryckvalsning eller tryckpole- ring.Examples of suitable cold hardening methods include peening (ball blasting or hammer peening), pressure pressing, pressure rolling or pressure polishing.

Som hjulmaterial.är angivet s k Hadfieldstål (12-16 %, företrädesvis cirka 1ü % Mn, É 0,8 % C, 5 1,0 % V samt inslag av Ni och Mo) eller lågkolhaltiga stål (S 0,10 % Ö, legerat med bl a Cr (2 1,5 %) samt eventuella tillsatser av Mn, Ni och/eller Mo).As wheel material, so-called Hadfield steel (12-16%, preferably about 1ü% Mn, É 0.8% C, 1.0% V and elements of Ni and Mo) or low-carbon steels (S 0.10% Ö, alloyed with Cr (2 1.5%) and any additions of Mn, Ni and / or Mo).

Hårdheten blir_här störst på ytan, och lägre längre in. Inträngningsdjupet Vför hårdheten kan vid vanlig kallhårdgöring i beroende av slaghårdheten vara K= I mm, men med tryckvalsning kan upp till 3 mm härdhetstjocklek erhållas. -~\l n mo Qlmllçvx 4 ----aThe hardness is_here greatest on the surface, and lower further in. The penetration depth Vfor the hardness can be K = I mm in normal cold hardening depending on the impact hardness, but with pressure rolling up to 3 mm hardness thickness can be obtained. - ~ \ l n mo Qlmllçvx 4 ---- a

Claims (2)

T~ 10 i * i “ asoooisïí Den del av hjulet som skall hârdgöras är den som glider mot rälsidan, exem- pelvis från flänstoppen eller nära denna till övergången till löpbanan (se figuren). _Flänsens utsida skall ej hårdgöras, då man eljest riskerar skador på flän- sen vid hjulets gång över växlar etc.' Uppfinningen är närmare exemplifierad 1 bifogad figur. En del av ett helhjul visas i figuren, men uppfinningen kan även appliceras på pâkrympta hjul. Hjulets liv visas vid 1 och hjulringen vid 2, Hjulet är av ovan angivet material och försett med löpbana 4 och fläns 3. Partiet från flänsens 3 topp eller nära denna till övergången till löpbanan 4 kall- härdas (partiet A) medelst någon av ovan angivna metoder (kulblästring, hammarpeening, tryckpressning, tryckvalsning eller tryckpolering eller kom- binationer av dessa). Löpbanan U (sträcka B) lämnas ohärdad, liksom flän- sens 3 utsida 5. Hjulet är avsett att användas i alla sorters hjulförsedda fordon, lok, vagnar etc och givetvis kan sträckan A kortas eller förlängas i beroende av hjulprofilen. Utformningen av hjulet enligt uppfinningen kan varieras på mångahanda sätt inom ramen för nedanstående patentkrav. PATENTKRAVT ~ 10 i * i “asoooisïí The part of the wheel to be hardened is the one that slides towards the rail side, for example from the flange top or close to it to the transition to the running track (see figure). The outside of the flange must not be hardened, as otherwise there is a risk of damage to the flange when the wheel moves over gears, etc. ' The invention is further exemplified in the accompanying figure. A part of a full wheel is shown in the figure, but the invention can also be applied to crimped wheels. The life of the wheel is shown at 1 and the wheel ring at 2. methods (ball blasting, hammer peening, pressure pressing, pressure rolling or pressure polishing or combinations thereof). Track U (section B) is left uncured, as is the outside of flange 3. The wheel is intended for use in all kinds of wheeled vehicles, locomotives, wagons, etc. and of course section A can be shortened or extended depending on the wheel profile. The design of the wheel according to the invention can be varied in many ways within the scope of the following claims. PATENT REQUIREMENTS 1. Järnvägshjul med löpbana och hjulfläns, k ä n n e t e c k n a t därav, att hjulet är utfört i s k Hadfieldstål med 12-16 % Mn, S 0,8 % C, S 1,0 % V samt Ni och Mo, eller lågkolhaltígt stål med S 0,10 % C, Z 1,5 % Cr samt eventuellt tillsatser av Mn, Ni och/eller Mo, och att endast flänsens (3) mot löpbanan riktade del är hårdgjord vid en tempe- ratur under 600 OC.Railway wheels with tread and wheel flange, characterized in that the wheel is made of Hadfield steel with 12-16% Mn, S 0.8% C, S 1.0% V and Ni and Mo, or low carbon steel with S 0 , 10% C, Z 1.5% Cr and possible additions of Mn, Ni and / or Mo, and that only the part of the flange (3) directed towards the tread is hardened at a temperature below 600 OC. 2. Järnvägshjul enligt patentkrav 1, k ä n n e t e c k n a't därav, att den hårdgjorda flänsdelen (A) är-behandlad medelst kallhårdgöring, såsom peening, exempelvis kulblästring eller hammarpeeníng, tryckpressning eller tryckvalsning. iïíóiïl uuAuTvRailway wheel according to claim 1, characterized in that the hardened flange part (A) is treated by cold hardening, such as peening, for example ball blasting or hammer peeling, pressure pressing or pressure rolling. iïíóiïl uuAuTv
SE8300015A 1983-01-03 1983-01-03 JERNVEGSHJUL SE440206B (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
SE8300015A SE440206B (en) 1983-01-03 1983-01-03 JERNVEGSHJUL
DE8383112977T DE3371968D1 (en) 1983-01-03 1983-12-22 Railroad wheel
EP83112977A EP0115046B1 (en) 1983-01-03 1983-12-22 Railroad wheel
NO834882A NO154992C (en) 1983-01-03 1983-12-30 RAIL WHEEL.
DK002184A DK157180C (en) 1983-01-03 1984-01-03 RAILWAY WHEELS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8300015A SE440206B (en) 1983-01-03 1983-01-03 JERNVEGSHJUL

Publications (4)

Publication Number Publication Date
SE8300015D0 SE8300015D0 (en) 1983-01-03
SE8300015L SE8300015L (en) 1984-07-04
SE437354B true SE437354B (en) 1985-02-25
SE440206B SE440206B (en) 1985-07-22

Family

ID=20349472

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8300015A SE440206B (en) 1983-01-03 1983-01-03 JERNVEGSHJUL

Country Status (5)

Country Link
EP (1) EP0115046B1 (en)
DE (1) DE3371968D1 (en)
DK (1) DK157180C (en)
NO (1) NO154992C (en)
SE (1) SE440206B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH685383A5 (en) * 1992-01-14 1995-06-30 Sig Schweiz Industrieges Method of forming tyre structure of constant hardness on railway vehicle wheel
DE19732809C2 (en) * 1997-07-30 2000-04-20 Bochumer Verein Verkehrstechni Track wheel with wear-optimized tread
NL1007759C2 (en) * 1997-12-10 1999-06-11 Univ Twente Curved metal tread body and noise reduction method.
US20180318972A1 (en) * 2015-12-22 2018-11-08 Shandong Huawin Electrical & Mechanical Technology Co. Ultrasonic machining method for improving abradability of wheel of locomotive, and applications

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1701976A (en) * 1925-06-22 1929-02-12 Taylor Wharton Iron & Steel Method of conditioning articles of manganese steel
FR2161155A6 (en) * 1970-11-23 1973-07-06 Stephanois Rech

Also Published As

Publication number Publication date
DK157180C (en) 1990-04-16
DK157180B (en) 1989-11-20
DE3371968D1 (en) 1987-07-16
EP0115046A3 (en) 1985-03-20
NO834882L (en) 1984-07-04
DK2184D0 (en) 1984-01-03
EP0115046B1 (en) 1987-06-10
SE440206B (en) 1985-07-22
SE8300015D0 (en) 1983-01-03
NO154992B (en) 1986-10-20
EP0115046A2 (en) 1984-08-08
SE8300015L (en) 1984-07-04
DK2184A (en) 1984-07-04
NO154992C (en) 1987-01-28

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