Global Patent Index - EP 1003920 A1

EP 1003920 A1 2000-05-31 - METHOD FOR PRODUCING A HIGH-STRENGTH TRACK ELEMENT AND TRACK ELEMENT THUS OBTAINED

Title (en)

METHOD FOR PRODUCING A HIGH-STRENGTH TRACK ELEMENT AND TRACK ELEMENT THUS OBTAINED

Title (de)

VERFAHREN ZUR HERSTELLUNG EINES HOCHFESTEN GLEISTEILS SOWIE GLEISTEIL

Title (fr)

PROCEDE DE FABRICATION D'UN ELEMENT DE VOIE A RESISTANCE ELEVEE, ET ELEMENT DE VOIE AINSI OBTENU

Publication

EP 1003920 A1 (DE)

Application

EP 98943853 A

Priority

  • DE 19735285 A
  • EP 9804894 W

Abstract (en)

[origin: DE19735285A1] A high strength rail part is made of a steel with a bainitic structure, which has the composition 0.3-0.6% C, 0.8-1.5% Si, 0.7-1.0% Mn, 0.9-1.4% Cr, 0.6-1.0% Mo, balance Fe and impurities. The steel has strength \-1400 N/mm<2> and elastic limit \-1100 N/mm<2>. An Independent claim is also included for production of a steel rail part by heating to 750-920 deg C, cooling to 250-450 deg C, reheating at 400-560 deg C for 60-150 mins. and cooling to room temperature.

IPC 1-7 (main, further and additional classification)

C21D 9/04; C21D 1/20; C22C 38/22

IPC 8 full level (invention and additional information)

C21D 1/20 (2006.01); C21D 9/04 (2006.01); C22C 38/22 (2006.01); E01B 7/00 (2006.01)

CPC (invention and additional information)

E01B 7/00 (2013.01); C21D 1/20 (2013.01); C21D 9/04 (2013.01); C22C 38/22 (2013.01); C21D 2211/002 (2013.01)

Citation (search report)

See references of WO 9909222A1

Designated contracting state (EPC)

AT BE CH DE DK ES FI FR GB IT LI LU NL PT SE

EPO simple patent family

DE 19735285 A1 19990218; DE 19735285 C2 20010823; AT 210197 T 20011215; AU 736649 B2 20010802; AU 9159598 A 19990308; DK 1003920 T3 20020402; EP 1003920 A1 20000531; EP 1003920 B1 20011205; ES 2169547 T3 20020701; NO 20000707 A 20000211; NO 20000707 D0 20000211; PL 189758 B1 20050930; PL 338544 A1 20001106; PT 1003920 E 20020531; US 6315844 B1 20011113; WO 9909222 A1 19990225

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