JPS5687624A - Heat treatment of ni-containing barlike steel product - Google Patents

Heat treatment of ni-containing barlike steel product

Info

Publication number
JPS5687624A
JPS5687624A JP16468279A JP16468279A JPS5687624A JP S5687624 A JPS5687624 A JP S5687624A JP 16468279 A JP16468279 A JP 16468279A JP 16468279 A JP16468279 A JP 16468279A JP S5687624 A JPS5687624 A JP S5687624A
Authority
JP
Japan
Prior art keywords
steel product
barlike
contg
heat treatment
temp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16468279A
Other languages
Japanese (ja)
Inventor
Chiaki Ouchi
Masakazu Niikura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP16468279A priority Critical patent/JPS5687624A/en
Publication of JPS5687624A publication Critical patent/JPS5687624A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE: To improve impact toughness while maintaining high productivity by maintaining an Ni-contg. barlike steel product for a specific time in a specific temp. region right after the passage of the steel product through an induction heating coil at the time of continuously tempering said steel material in said specific temp. region through induction heating while conveying the same at specific speed.
CONSTITUTION: While an Ni-contg. barlike steel product contg. 0.5W20% Ni is being conveyed at ≥30mm/sec. conveying speed, it is continuously tempered in (Ac1-50°C)WAc1 temp. region. At this time, the barlike steel product is held for ≥15 seconds at said temp. region right after it has passed the induction heating coil. In this way, the heat treatment furnace is installed just behind tempering coil, and the time when the steel product passes the heat treatment furnace according to its conveying speed is made at least 15 seconds and more, whereby the Ni-contg. barlike steel product having high impact toughness is obtained.
COPYRIGHT: (C)1981,JPO&Japio
JP16468279A 1979-12-20 1979-12-20 Heat treatment of ni-containing barlike steel product Pending JPS5687624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16468279A JPS5687624A (en) 1979-12-20 1979-12-20 Heat treatment of ni-containing barlike steel product

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16468279A JPS5687624A (en) 1979-12-20 1979-12-20 Heat treatment of ni-containing barlike steel product

Publications (1)

Publication Number Publication Date
JPS5687624A true JPS5687624A (en) 1981-07-16

Family

ID=15797842

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16468279A Pending JPS5687624A (en) 1979-12-20 1979-12-20 Heat treatment of ni-containing barlike steel product

Country Status (1)

Country Link
JP (1) JPS5687624A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03274221A (en) * 1990-03-23 1991-12-05 Fuji Denshi Kogyo Kk Method and apparatus for high-frequency shifting quenching and tempering

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03274221A (en) * 1990-03-23 1991-12-05 Fuji Denshi Kogyo Kk Method and apparatus for high-frequency shifting quenching and tempering

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