JPS5465107A - Hardening method by means of plasma arc - Google Patents

Hardening method by means of plasma arc

Info

Publication number
JPS5465107A
JPS5465107A JP13070477A JP13070477A JPS5465107A JP S5465107 A JPS5465107 A JP S5465107A JP 13070477 A JP13070477 A JP 13070477A JP 13070477 A JP13070477 A JP 13070477A JP S5465107 A JPS5465107 A JP S5465107A
Authority
JP
Japan
Prior art keywords
gas
passage
making
torch
molten pool
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
JP13070477A
Other languages
Japanese (ja)
Other versions
JPS572244B2 (en
Inventor
Mitsuaki Haneda
Toshimi Sasaki
Hironari Taguchi
Akiyoshi Imanaga
Koichiro Furusawa
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 JP13070477A priority Critical patent/JPS5465107A/en
Publication of JPS5465107A publication Critical patent/JPS5465107A/en
Publication of JPS572244B2 publication Critical patent/JPS572244B2/ja
Granted 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • 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
    • C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
    • C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

PURPOSE:To harden effectively the required part, by heating locally the material, blowing hydrocarbon gas against it, making the gas react with it and, in this way, making C penetrate into it. CONSTITUTION:The materail 8 is heated locally by means of the plasma torch 1. The torch 1 is constituted of the passage 2 for working gas, the passage 5 for reaction gas, the passage 7 for shielding gas and the W electrode 3. By making Ar flow through the passages 2 and 7, the plasma arc 9 is generated in the space between the torch 1 and the material 8. Owing to the generation of the arc 9, the molten pool 10 is formed at the material 8. At the same time, a hydrocarbon gas (methane gas) is released toward the molten pool 10 through the passage 2. As the result, the metal in the molten pool 10 and the gas react, so that the hardening is promoted.
JP13070477A 1977-11-02 1977-11-02 Hardening method by means of plasma arc Granted JPS5465107A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13070477A JPS5465107A (en) 1977-11-02 1977-11-02 Hardening method by means of plasma arc

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13070477A JPS5465107A (en) 1977-11-02 1977-11-02 Hardening method by means of plasma arc

Publications (2)

Publication Number Publication Date
JPS5465107A true JPS5465107A (en) 1979-05-25
JPS572244B2 JPS572244B2 (en) 1982-01-14

Family

ID=15040617

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13070477A Granted JPS5465107A (en) 1977-11-02 1977-11-02 Hardening method by means of plasma arc

Country Status (1)

Country Link
JP (1) JPS5465107A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604836A1 (en) * 1992-12-28 1994-07-06 Adam Opel Ag Method for making wear-resistant surface coatings on steel pieces and steel pieces with such coatings

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51126334A (en) * 1975-04-28 1976-11-04 Pacific Metals Co Ltd Method of hardening steel surface

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51126334A (en) * 1975-04-28 1976-11-04 Pacific Metals Co Ltd Method of hardening steel surface

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0604836A1 (en) * 1992-12-28 1994-07-06 Adam Opel Ag Method for making wear-resistant surface coatings on steel pieces and steel pieces with such coatings

Also Published As

Publication number Publication date
JPS572244B2 (en) 1982-01-14

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