JPS55158271A - Surface hardening treatment of steel for machine structure - Google Patents

Surface hardening treatment of steel for machine structure

Info

Publication number
JPS55158271A
JPS55158271A JP6616979A JP6616979A JPS55158271A JP S55158271 A JPS55158271 A JP S55158271A JP 6616979 A JP6616979 A JP 6616979A JP 6616979 A JP6616979 A JP 6616979A JP S55158271 A JPS55158271 A JP S55158271A
Authority
JP
Japan
Prior art keywords
treatment
steel
carried out
boron
hardening
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
JP6616979A
Other languages
Japanese (ja)
Inventor
Kenji Isogawa
Katsunori Takada
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP6616979A priority Critical patent/JPS55158271A/en
Publication of JPS55158271A publication Critical patent/JPS55158271A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
    • C23C8/28—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases more than one element being applied in one step
    • C23C8/30—Carbo-nitriding
    • C23C8/32—Carbo-nitriding of ferrous surfaces

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

PURPOSE:To prevent coarsening of crystal grain and not to generate the heat treatment strain etc., by heat treating the steel containing boron regulating the condition of atmosphere gas and treating temperature range and next, carrying out refining treatment. CONSTITUTION:On occasion of carrying out surface hardening treatment of steel for machine structure containing boron, preferably, containing 0.0005-0.05wt% of boron, the treatment is carried out in the atmosphere of endothermic reation type metamorphic gas containing CO or gas containing hydrocarbon or mixed gas of both gases and also, under the condition of nitrogen potential of 0.1-1%. And, heat treatment is carried out at Ac3 transformation temperature of the above-mentioned steel or more and 900 deg.C or less and after that, refining treatment is carried out. Hereby, fine grain of crystal grain number No.6 or more, is obtained in 100%. Further, on occasion demands, the above-mentioned refining treatment is substituted for hardening treatment or hardening and tempering treatment.
JP6616979A 1979-05-30 1979-05-30 Surface hardening treatment of steel for machine structure Pending JPS55158271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6616979A JPS55158271A (en) 1979-05-30 1979-05-30 Surface hardening treatment of steel for machine structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6616979A JPS55158271A (en) 1979-05-30 1979-05-30 Surface hardening treatment of steel for machine structure

Publications (1)

Publication Number Publication Date
JPS55158271A true JPS55158271A (en) 1980-12-09

Family

ID=13308073

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6616979A Pending JPS55158271A (en) 1979-05-30 1979-05-30 Surface hardening treatment of steel for machine structure

Country Status (1)

Country Link
JP (1) JPS55158271A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015195285A1 (en) * 2014-06-20 2015-12-23 Arvinmeritor Technology, Llc Ferrous alloy

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015195285A1 (en) * 2014-06-20 2015-12-23 Arvinmeritor Technology, Llc Ferrous alloy
CN106460080A (en) * 2014-06-20 2017-02-22 阿文美驰技术有限责任公司 Ferrous alloy
US10351944B2 (en) 2014-06-20 2019-07-16 Arvinmeritor Technology, Llc Ferrous alloy
CN106460080B (en) * 2014-06-20 2019-10-08 阿文美驰技术有限责任公司 Ferrous alloy

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