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1. WO2000039349 - METHOD FOR HARDENING AND TEMPERING STEEL STRIPS

Publication Number WO/2000/039349
Publication Date 06.07.2000
International Application No. PCT/DE1999/003152
International Filing Date 30.09.1999
IPC
C21D 1/18 2006.01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening; Quenching with or without subsequent tempering
C21D 9/52 2006.01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
52for wires; for strips
C21D 9/56 2006.01
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
52for wires; for strips
54Furnaces for treating strips or wire
56Continuous furnaces for strip or wire
CPC
C21D 1/18
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
1General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
18Hardening
C21D 9/52
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
52for wires; for strips ; ; for rods of unlimited length
C21D 9/56
CCHEMISTRY; METALLURGY
21METALLURGY OF IRON
DMODIFYING 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
9Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
52for wires; for strips ; ; for rods of unlimited length
54Furnaces for treating strips or wire
56Continuous furnaces for strip or wire
Applicants
  • ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 D-70442 Stuttgart, DE (AllExceptUS)
  • HUBER, Joerg [DE/DE]; DE (UsOnly)
  • WILHELM, Manfred [DE/DE]; DE (UsOnly)
  • MAZURKIEWICZ, Julius [BE/BE]; BE (UsOnly)
  • HOEFINGHOFF, Heinz [DE/DE]; DE (UsOnly)
  • RADEMACHER, Peter [DE/DE]; DE (UsOnly)
Inventors
  • HUBER, Joerg; DE
  • WILHELM, Manfred; DE
  • MAZURKIEWICZ, Julius; BE
  • HOEFINGHOFF, Heinz; DE
  • RADEMACHER, Peter; DE
Priority Data
198 60 472.628.12.1998DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) VERFAHREN ZUM VERGÜTEN VON STAHLBÄNDERN
(EN) METHOD FOR HARDENING AND TEMPERING STEEL STRIPS
(FR) PROCEDE D'AMELIORATION DE FEUILLARDS D'ACIER
Abstract
(DE)
Bei einem Verfahren zum Vergüten von Stahlbändern im Durchlauf, bei dem das Bandmaterial zum Härten auf eine Härtetemperatur erwärmt und anschließend abgeschreckt sowie zum Anlassen einer Anlaßtemperatur ausgesetzt wird, wird zwecks Erreichen eines quasi konstanten Härteverlaufs bei Stahlbändern mit über die Bandlänge variabler Banddicke das Bandmaterial beim Anlassen so erwärmt, daß es die Anlaßtemperatur erst unmittelbar vor Verlassen der Anlaßzone erreicht. Damit hat die Verweilzeit auf Anlaßtemperatur keinen Einfluß mehr auf die Endhärte des Bandmaterials, diese wird vielmehr ausschließlich von der Anlaßtemperatur bestimmt.
(EN)
The invention relates to a method for the continuous hardening and tempering of steel strips. According to this method, for hardening the strip material is heated to a hardening temperature and then quenched and for tempering said material is exposed to a tempering temperature. To obtain virtually constant hardening in a steel strip whose thickness varies along its length, the strip material is heated during tempering in such a way that it does not reach the tempering temperature until shortly before leaving the tempering zone. As a result the duration of exposure to the tempering temperature has no effect on the strip material's final hardness, which is instead determined exclusively by the tempering temperature.
(FR)
Selon l'invention, dans un procédé d'amélioration en continu de feuillards d'acier - au cours duquel le matériau de feuillard, pour la trempe, est chauffé à une température de trempe, puis est brusquement refroidi, et exposé à une température de revenu, pour le revenu - le matériau de feuillard est, lors du revenu, et pour que l'on puisse atteindre une allure du processus de trempe quasi constante pour des feuillards d'acier présentant des épaisseurs de feuillard variables sur toute la longueur du feuillard, chauffé de façon à atteindre la température de revenu immédiatement avant la sortie de la zone de revenu. Pour que le temps de séjour à la température de revenu n'ait plus aucune influence sur la dureté finale du matériau de feuillard, celle-ci est exclusivement déterminée par la température de revenu.
Also published as
US09622780
Latest bibliographic data on file with the International Bureau