EVAPORATIVE PATTERN CASTING METHOD

Title:

EVAPORATIVE PATTERN CASTING METHOD

Document Type and Number:

WIPO Patent Application WO/2012/101829

Kind Code:

A1

Abstract:

Provided is an evaporative pattern casting method causing no decrease in accuracy of an evaporative pattern. The evaporative pattern casting method is provided with a parts production step (S2), an assembly step (S4), a sand-mold manufacturing step (S6), a melt injection step (S8), and a sand removal step (S12). In the parts production step, an evaporative pattern is manufactured divided into a plurality of parts. In the assembly step, the parts are assembled in a work plane. In the sand mold manufacturing step, the evaporative pattern is covered by sand and a sand mold is fabricated without the assembled evaporative pattern being moved from the work plane. In the melt injection step, a melt is injected into the sand mold. In the sand removal step, the sand is removed after the melt has solidified. According to this casting method, since the sand mold is fabricated without the assembled evaporative pattern being moved from the work plane, the dimensional accuracy after assembly can be maintained.

Inventors:

OKABE SUSUMU (JP)
SATO MASANORI (JP)
TAKAHASHI MASASHI (JP)
NANBA TSUYOSHI (JP)

Application Number:

PCT/JP2011/051825

Publication Date:

August 02, 2012

Filing Date:

January 28, 2011

Export Citation:

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Assignee:

TOYOTA MOTOR CO LTD (JP)
OKABE SUSUMU (JP)
SATO MASANORI (JP)
TAKAHASHI MASASHI (JP)
NANBA TSUYOSHI (JP)

International Classes:

B22C9/04; B21D37/02; B21D37/20; B22C7/02

Domestic Patent References:

WO2000015370A1

2000-03-23

Foreign References:

JPS61266147A

1986-11-25

Attorney, Agent or Firm:

KAI-U PATENT LAW FIRM (JP)
Patent business corporation KAI-U Patent Law Firm (JP)

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