JPS57158319A - Partial surface hardening method using pulse tig welding machine - Google Patents

Partial surface hardening method using pulse tig welding machine

Info

Publication number
JPS57158319A
JPS57158319A JP4302981A JP4302981A JPS57158319A JP S57158319 A JPS57158319 A JP S57158319A JP 4302981 A JP4302981 A JP 4302981A JP 4302981 A JP4302981 A JP 4302981A JP S57158319 A JPS57158319 A JP S57158319A
Authority
JP
Japan
Prior art keywords
arc
materials
heated
welding machine
tig welding
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
JP4302981A
Other languages
Japanese (ja)
Inventor
Masahiro Ogawa
Masaaki Matsutani
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.)
Toyota Motor Corp
Original Assignee
Toyota Motor Corp
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 Toyota Motor Corp filed Critical Toyota Motor Corp
Priority to JP4302981A priority Critical patent/JPS57158319A/en
Publication of JPS57158319A publication Critical patent/JPS57158319A/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
    • 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

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)
  • Arc Welding In General (AREA)

Abstract

PURPOSE:To stabilize the arc with weak pulse base currents by melting the surface of materials to be treated extremely slightly by the arc generated by the first pulse peak current and holding the arc by utilizing the metallic vapor pressure increased by this. CONSTITUTION:The arc 2 is generaged by the arc current which is increased instantaneously by a pulse TIG welding machine and is smaller than this in average between a tungsten electrode 1 and ferrous materials 3 to be treated, whereby the materials 3 are melted and heated and bead parts 4 are formed. At this time the materials 3 are melted in such a way that the volume ratio between the molten area and the area 5 heated to above the Ac1 transformation point is the same or the latter is larger, thence the materials are cooled to harden. Thereby, the stable and fine patterns are heated by the arc 2.
JP4302981A 1981-03-24 1981-03-24 Partial surface hardening method using pulse tig welding machine Pending JPS57158319A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4302981A JPS57158319A (en) 1981-03-24 1981-03-24 Partial surface hardening method using pulse tig welding machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4302981A JPS57158319A (en) 1981-03-24 1981-03-24 Partial surface hardening method using pulse tig welding machine

Publications (1)

Publication Number Publication Date
JPS57158319A true JPS57158319A (en) 1982-09-30

Family

ID=12652513

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4302981A Pending JPS57158319A (en) 1981-03-24 1981-03-24 Partial surface hardening method using pulse tig welding machine

Country Status (1)

Country Link
JP (1) JPS57158319A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161408A2 (en) * 1984-05-18 1985-11-21 Audi Ag Process for surface-hardening by remelting cast iron cylinders
JP2009060808A (en) * 2007-09-04 2009-03-26 Daiya Kk Method for growing fruit tree

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0161408A2 (en) * 1984-05-18 1985-11-21 Audi Ag Process for surface-hardening by remelting cast iron cylinders
JP2009060808A (en) * 2007-09-04 2009-03-26 Daiya Kk Method for growing fruit tree

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