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1. (WO2013147155) METHOD FOR PRODUCING CARBON TOOL STEEL STRIP

Pub. No.:    WO/2013/147155    International Application No.:    PCT/JP2013/059519
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Sat Mar 30 00:59:59 CET 2013
IPC: C21D 9/56
C21D 9/573
C21D 9/60
C21D 1/18
C21D 1/42
Applicants: HITACHI METALS,LTD.
日立金属株式会社
Inventors: IDE Yuki
井手 雄紀
YOSHINO Katsuo
吉野 勝雄
FUJIHARA Hiroyoshi
藤原 弘好
ISOYAMA Takashi
礒山 隆志
Title: METHOD FOR PRODUCING CARBON TOOL STEEL STRIP
Abstract:
Provided is a method for producing a carbon tool steel strip that facilitates temperature control and improves heat treatment capability in the production of carbon tool steel strips. A method for producing a carbon tool steel strip by carrying out in succession: an unwinding step for unwinding a carbon tool steel strip using an unwinder; a preheating step for preheating by induction heating while also threading the carbon tool steel strip having been unwound by the unwinding step; a hardening step for threading the carbon tool steel strip having been preheated by the preheating step, in an inert gas atmosphere heated to greater than 850°C but not greater than 1100°C and next quenching and hardening same; a tempering step for threading and tempering the carbon tool steel strip having been hardened in the hardening step in an inert gas atmosphere heated to 300-450°C; and a take-up step for taking up the carbon tool steel strip having been tempered by the tempering step.