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1. (WO2019067870) METHOD FOR JOINING STEEL RAILS WITH CONTROLLED WELD HEAT INPUT
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/067870 International Application No.: PCT/US2018/053377
Publication Date: 04.04.2019 International Filing Date: 28.09.2018
IPC:
C21D 9/04 (2006.01) ,B23K 9/00 (2006.01) ,B23K 9/04 (2006.01) ,B23K 13/01 (2006.01) ,B23K 28/00 (2006.01) ,C21D 9/50 (2006.01) ,E01B 29/42 (2006.01)
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
04
for rails
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9
Arc welding or cutting
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
9
Arc welding or cutting
04
Welding for other purposes than joining, e.g. built-up welding
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
13
Welding by high-frequency current heating
01
by induction heating
B PERFORMING OPERATIONS; TRANSPORTING
23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
K
SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
28
Welding or cutting not covered by groups B23K5/-B23K26/93
C CHEMISTRY; METALLURGY
21
METALLURGY OF IRON
D
MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING, OR OTHER TREATMENTS
9
Heat treatment, e.g. annealing, hardening, quenching, tempering, adapted for particular articles; Furnaces therefor
50
for welded joints
E FIXED CONSTRUCTIONS
01
CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
B
PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
29
Laying, rebuilding, or taking-up tracks; Tools or machines therefor
42
Undetachably joining or fastening track components in or on the track, e.g. by welding, by gluing; Pre-assembling track components by gluing; Sealing joints with filling components
Applicants:
CF&I STEEL L.P. D/B/A EVRAZ ROCKY MOUNTAIN STEEL [US/US]; 1612 E. Abriendo Ave. Pueblo, CO 81004, US
Inventors:
LEHNHOFF, Gregory, Ryan; US
KRISTAN, Joseph, Victor; US
RICHARDS, Mark, David; US
Agent:
JETHROW, Christopher, A.; US
CORSO, Joseph, J.; US
SOPKO, Jeffrey, J.; US
ZALENSKI, Thaddeus, A.; US
SHIMOLA, Howard, G.; US
Priority Data:
62/565,28229.09.2017US
Title (EN) METHOD FOR JOINING STEEL RAILS WITH CONTROLLED WELD HEAT INPUT
(FR) PROCÉDÉ D'ASSEMBLAGE DE RAILS EN ACIER À APPORT CONTRÔLÉ DE CHALEUR DE SOUDAGE
Abstract:
(EN) A method for creating a welded joint between ends of two steel rails, wherein the two steel rails have a substantially pearlitic microstructure. The method includes a first heating step, an upsetting step, a first cooling step, and a second heating step and provides a means to influence a microstructure and hardness of an austenitic region of a heat affected zone (HAZ) and/or an extent of softening in a softened region of a HAZ.
(FR) L'invention concerne un procédé de création d'un joint soudé entre les extrémités de deux rails en acier, les deux rails en acier présentant une microstructure sensiblement perlitique. Le procédé comprend une première étape de chauffage, une étape de refoulement, une première étape de refroidissement et une seconde étape de chauffage et fournit un moyen d'influencer une microstructure et une dureté d'une région austénitique d'une zone affectée par la chaleur (HAZ) et/ou une étendue de ramollissement dans une région ramollie d'une HAZ.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)