JPS57171564A - Precision casting method - Google Patents

Precision casting method

Info

Publication number
JPS57171564A
JPS57171564A JP5660581A JP5660581A JPS57171564A JP S57171564 A JPS57171564 A JP S57171564A JP 5660581 A JP5660581 A JP 5660581A JP 5660581 A JP5660581 A JP 5660581A JP S57171564 A JPS57171564 A JP S57171564A
Authority
JP
Japan
Prior art keywords
chamber
casting
inert gas
defects
harmful components
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
JP5660581A
Other languages
Japanese (ja)
Inventor
Yoshimasa Kidowaki
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.)
Iwatani Corp
Original Assignee
Iwatani Corp
Iwatani Sangyo KK
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 Iwatani Corp, Iwatani Sangyo KK filed Critical Iwatani Corp
Priority to JP5660581A priority Critical patent/JPS57171564A/en
Publication of JPS57171564A publication Critical patent/JPS57171564A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D25/00—Special casting characterised by the nature of the product
    • B22D25/02—Special casting characterised by the nature of the product by its peculiarity of shape; of works of art

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)

Abstract

PURPOSE:To eliminate the generation of various kinds of defects owing to harmful components such as metallic vapor in the event of casting personal ornaments made of metals with a precision casting plant having a hermetically sealed melting chamber and a casting chamber by charging and discharging an inert gas into and from the melting chamber continuously. CONSTITUTION:A body 29 of a precision casting machine is segmented by means of a wall 31 having a vent hole 7 to a melting chamber 1 and a casting chamber 8. An ingot 3 of noble metal which is a raw material for castings is put in a copper crucible 5 in the chamber 1, and is melted by the arc 4 between the same and an electrode 2, and is cast into the mold 9 in the chamber 8 in the lower part through the hole 7, whereby personal ornaments, objects of industrial art, artificial teeth, small industrial articles, etc. are precision-cast. In this case, the smoke-like harmful components such as vapor of the molten metal degrade the visual field in the chamber 1, contaminate the chamber walls, or enter the inside of the chamber 8 thereby sticking on the molds and causing casting defects. In order to prevent these, an inert gas such as Ar is flowed into the chamber 1 with vacuum pumps 16 and 52 to carry out the harmful components together with the inert gas to the outside, whereby various kinds of defects are prevented.
JP5660581A 1981-04-14 1981-04-14 Precision casting method Pending JPS57171564A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5660581A JPS57171564A (en) 1981-04-14 1981-04-14 Precision casting method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5660581A JPS57171564A (en) 1981-04-14 1981-04-14 Precision casting method

Publications (1)

Publication Number Publication Date
JPS57171564A true JPS57171564A (en) 1982-10-22

Family

ID=13031852

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5660581A Pending JPS57171564A (en) 1981-04-14 1981-04-14 Precision casting method

Country Status (1)

Country Link
JP (1) JPS57171564A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07116819A (en) * 1993-10-20 1995-05-09 Kiyasuteingu Okamoto:Kk Method for pretreating metal for casting and device therefor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145325A (en) * 1978-05-02 1979-11-13 Nakaseko Isao Casting machine equipped with argon arc pressure device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54145325A (en) * 1978-05-02 1979-11-13 Nakaseko Isao Casting machine equipped with argon arc pressure device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07116819A (en) * 1993-10-20 1995-05-09 Kiyasuteingu Okamoto:Kk Method for pretreating metal for casting and device therefor

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