JPS5789471A - Carburizing heat treatment for steel - Google Patents

Carburizing heat treatment for steel

Info

Publication number
JPS5789471A
JPS5789471A JP16460580A JP16460580A JPS5789471A JP S5789471 A JPS5789471 A JP S5789471A JP 16460580 A JP16460580 A JP 16460580A JP 16460580 A JP16460580 A JP 16460580A JP S5789471 A JPS5789471 A JP S5789471A
Authority
JP
Japan
Prior art keywords
intergrain
acm
workpiece
condition
under
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.)
Granted
Application number
JP16460580A
Other languages
Japanese (ja)
Other versions
JPS6360113B2 (en
Inventor
Yasutada Kobayashi
Kozo Nakamura
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP16460580A priority Critical patent/JPS5789471A/en
Publication of JPS5789471A publication Critical patent/JPS5789471A/en
Publication of JPS6360113B2 publication Critical patent/JPS6360113B2/ja
Granted 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
    • C23C8/08—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 only one element being applied
    • C23C8/20—Carburising
    • C23C8/22—Carburising 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 form a carbide layer on the outmost surface while suppressing generation of soot, by primarily carburizing a workpiece under the condition of Acm>CP, cooling the carburized workpiece in the air to oxidize its outermost surface, removing an intergrain oxidized layer, and then secondarily carburizing the treated workpiece under the condition of Acm<CP. CONSTITUTION:A workpiece, primarily carburized under the condition of Acm> CP (carbon potential), is cooled as such from a carburizing temperature in the air or oxygen-enriched air, to completely oxidize an intergrain oxidized layer on its surface. Thereafter, the intergrain oxidized layer is removed by shot blasting. The treated workpiece is then secondarily carburized under the condition of Acm<CP, to form a carbide layer on the outermost surface. Owing to this treatment, the intergrain oxidized layer can be uniformly removed within a short period by shot blasting.
JP16460580A 1980-11-25 1980-11-25 Carburizing heat treatment for steel Granted JPS5789471A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16460580A JPS5789471A (en) 1980-11-25 1980-11-25 Carburizing heat treatment for steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16460580A JPS5789471A (en) 1980-11-25 1980-11-25 Carburizing heat treatment for steel

Publications (2)

Publication Number Publication Date
JPS5789471A true JPS5789471A (en) 1982-06-03
JPS6360113B2 JPS6360113B2 (en) 1988-11-22

Family

ID=15796349

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16460580A Granted JPS5789471A (en) 1980-11-25 1980-11-25 Carburizing heat treatment for steel

Country Status (1)

Country Link
JP (1) JPS5789471A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767080A (en) * 1986-08-21 1988-08-30 Ryobi, Ltd. Angle adjustment mechanism for fishline guide roller of a spinning reel
JPH0234767A (en) * 1988-07-25 1990-02-05 Mazda Motor Corp Carburizing and hardening method
JP2000313949A (en) * 1999-04-27 2000-11-14 Yamaha Motor Co Ltd Surface hardening method for iron alloy parts
KR100427381B1 (en) * 2002-05-27 2004-04-14 현대자동차주식회사 differencial pinion shaft for transmission and method for manufacturing the same
US7178751B1 (en) 2004-12-07 2007-02-20 Gregory D. Isaacs Fishing reel
AT513429A1 (en) * 2012-09-20 2014-04-15 Miba Sinter Austria Gmbh Method for producing a sintered component module

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4767080A (en) * 1986-08-21 1988-08-30 Ryobi, Ltd. Angle adjustment mechanism for fishline guide roller of a spinning reel
JPH0234767A (en) * 1988-07-25 1990-02-05 Mazda Motor Corp Carburizing and hardening method
JP2000313949A (en) * 1999-04-27 2000-11-14 Yamaha Motor Co Ltd Surface hardening method for iron alloy parts
KR100427381B1 (en) * 2002-05-27 2004-04-14 현대자동차주식회사 differencial pinion shaft for transmission and method for manufacturing the same
US7178751B1 (en) 2004-12-07 2007-02-20 Gregory D. Isaacs Fishing reel
AT513429A1 (en) * 2012-09-20 2014-04-15 Miba Sinter Austria Gmbh Method for producing a sintered component module
AT513429B1 (en) * 2012-09-20 2014-07-15 Miba Sinter Austria Gmbh Method for producing a sintered component module

Also Published As

Publication number Publication date
JPS6360113B2 (en) 1988-11-22

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