EP 0481378 A1 19920422 - Process for producing high strength steel belt.
Title (en)
Process for producing high strength steel belt.
Title (de)
Verfahren zur Herstellung eines besonders festen Stahlgurts.
Title (fr)
Méthode pour la manufacture d'une courroie en acier à haute résistance.
Publication
Application
Priority
JP 27542290 A 19901016
Abstract (en)
A high strength steel belt (1) having an excellent flatness and a duplex structure of austenite and martensite has been prepared by a process which comprises providing a cold rolled or cold rolled and annealed strip of a martensitic structure from low carbon martensitic stainless steel containing from 10 to 17 % by weight of Cr and having a carbon content of not exceeding 0.15 % by weight, connecting ends of the strip or ends of a plate cut from said strip to provide an endless belt, causing the endless belt to circularly move between rolls (2,3) under tension and to repeatedly pass through a heating furnace (4) where the belt is heated to a temperature within the range from (the As point of the steel + 30 DEG C.) to the Af point of the steel and not higher than 900 DEG C. so that a part of the martensitic phase may be changed to a reversed austenitic phase, and cooling the heated belt to ambient temperature.
IPC 1-7
IPC 8 full level
C21D 9/00 (2006.01); B21D 53/14 (2006.01); C21D 8/02 (2006.01); C21D 9/46 (2006.01); C22C 38/00 (2006.01); C22C 38/18 (2006.01); C22C 38/58 (2006.01)
CPC (source: EP)
B21D 53/14 (2013.01); C21D 8/0205 (2013.01)
Citation (search report)
- [A] DE 3628862 A1 19870312 - NISSHIN STEEL CO LTD [JP]
- [A] DE 3416260 A1 19841108 - VOLVO CAR BV [NL]
- [A] PATENT ABSTRACTS OF JAPAN, unexamined applications, M field, vol. 11, no. 128, April 22, 1987 THE PATENT OFFICE JAPANESE GOVERNMENT page 77 M 583
Designated contracting state (EPC)
AT DE SE
DOCDB simple family (publication)
EP 0481378 A1 19920422; EP 0481378 B1 19940720; AT E108711 T1 19940815; DE 69102969 D1 19940825; DE 69102969 T2 19950316; JP 3032273 B2 20000410; JP H04154920 A 19920527
DOCDB simple family (application)
EP 91117409 A 19911011; AT 91117409 T 19911011; DE 69102969 T 19911011; JP 27542290 A 19901016