JPS51124614A - A hardening method and hardening apparatus for steel sleeves - Google Patents

A hardening method and hardening apparatus for steel sleeves

Info

Publication number
JPS51124614A
JPS51124614A JP4962475A JP4962475A JPS51124614A JP S51124614 A JPS51124614 A JP S51124614A JP 4962475 A JP4962475 A JP 4962475A JP 4962475 A JP4962475 A JP 4962475A JP S51124614 A JPS51124614 A JP S51124614A
Authority
JP
Japan
Prior art keywords
hardening
steel sleeves
hardness
sleeve rolls
hardening method
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
JP4962475A
Other languages
Japanese (ja)
Inventor
Yasutoshi Kato
Toshio Yaegashi
Katsutoshi Kataoka
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4962475A priority Critical patent/JPS51124614A/en
Publication of JPS51124614A publication Critical patent/JPS51124614A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE:In hardening sleeve rolls for rolling mills,the surface is hardened to required hardness and hardening of the inner surface is retarded to the hardness at the tempering to improve fracture resistance and crack resistance of the sleeve rolls.
JP4962475A 1975-04-25 1975-04-25 A hardening method and hardening apparatus for steel sleeves Pending JPS51124614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4962475A JPS51124614A (en) 1975-04-25 1975-04-25 A hardening method and hardening apparatus for steel sleeves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4962475A JPS51124614A (en) 1975-04-25 1975-04-25 A hardening method and hardening apparatus for steel sleeves

Publications (1)

Publication Number Publication Date
JPS51124614A true JPS51124614A (en) 1976-10-30

Family

ID=12836373

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4962475A Pending JPS51124614A (en) 1975-04-25 1975-04-25 A hardening method and hardening apparatus for steel sleeves

Country Status (1)

Country Link
JP (1) JPS51124614A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010150935A1 (en) * 2009-06-26 2010-12-29 (주) 평산 Rapid air cooling device for hollow pipe-shaped heat-treated product

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4976716A (en) * 1972-11-27 1974-07-24

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4976716A (en) * 1972-11-27 1974-07-24

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010150935A1 (en) * 2009-06-26 2010-12-29 (주) 평산 Rapid air cooling device for hollow pipe-shaped heat-treated product

Similar Documents

Publication Publication Date Title
ATE60367T1 (en) METHOD AND APPARATUS FOR REDUCING CORE LOSS OF CORNORATED SILICON STEEL.
JPS51124614A (en) A hardening method and hardening apparatus for steel sleeves
GB1550201A (en) Method for hardening and hot-zincing steel articles
JPS5397913A (en) Heat treating method and apparatus for long metallic material
JPS51148611A (en) Heat-treatment process of steel
YU39760B (en) Process for tempering steel and iron pieces
JPS52717A (en) Process for production of coldrolled ferritic stainless steel plates w ith little ridging and surface roughening
JPS51140817A (en) Martensite tool steel for hot forming
JPS523521A (en) Heat treating method of rolls for rolling mill
JPS53104531A (en) Surface processing method decreasing stress corrosion cracking
SE8005896L (en) PROCEDURE FOR TREATMENT OF DYNAMIC MATERIAL
JPS57165115A (en) Processing method for steel plate
JPS51112413A (en) Method of continuous annealing steel strip
GB1448154A (en) Process for manufacturing highly wear-resistant undistorted axially symmetrical parts
GB567281A (en) Improvements in or relating to the manufacture of metal articles
JPS5274522A (en) Heat treatment of working roll for cold rolling
JPS5218419A (en) Method of manufacturing si-cont. steel
IT8025509A0 (en) HARDENED CAST IRON ROLLER CAST BY CENTRIFUGATION AND METHOD FOR ITS MANUFACTURE.
JPS51112723A (en) Process for hardening steel pipes
JPS5243712A (en) Method of heating square-shaped steel
CS188533B1 (en) Method of finishing and cutting the ceramic shaped bodies,particularly the handles and device for performing thesame
JPS53108870A (en) Controlling method for roller gap of section steel rolling mill
JPS51140818A (en) Martensite tool steel for hot forming
JPS53135806A (en) Improving method for quality in direct rolling
JPS51132350A (en) External wheel for co-use of mast roller and bearing of forklift and i ts fabrication method