GB1478925A - A method of forming a foundry mould - Google Patents

A method of forming a foundry mould

Info

Publication number
GB1478925A
GB1478925A GB1829975A GB1829975A GB1478925A GB 1478925 A GB1478925 A GB 1478925A GB 1829975 A GB1829975 A GB 1829975A GB 1829975 A GB1829975 A GB 1829975A GB 1478925 A GB1478925 A GB 1478925A
Authority
GB
United Kingdom
Prior art keywords
pattern
air
film
covered
mould
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.)
Expired
Application number
GB1829975A
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.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries 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 Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to GB1829975A priority Critical patent/GB1478925A/en
Publication of GB1478925A publication Critical patent/GB1478925A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/02—Sand moulds or like moulds for shaped castings
    • B22C9/03—Sand moulds or like moulds for shaped castings formed by vacuum-sealed moulding

Abstract

1478925 Making foundry moulds MITSUBISHI JUKOGYO KK 1 May 1975 18299/75 Heading B3G A foundry mould having a cavity with a protruding portion is produced by providing a first pattern 1 having a recess corresponding to the protrusion and locating in the recess a second pattern 8 covered with an air-tight film 9; the pattern assembly is placed on an apertured plate 2, and the exposed surface of the pattern 1 or both patterns, is or are covered by an air-tight film 3 adhered to the pattern surfaces by the withdrawal of air from a suction box 5. After withdrawing the pattern 8 and leaving the film 9 in position, preceded if necessary by cutting away the film from its exposed surface, a mould box 4 is placed in position and filled with particulate material covered by an air-tight film 10. The mould box interior is subjected to reduced pressure and the suction box connected to atmosphere causing the films to adhere to the particulate material and allowing the removal of the pattern 1 and plate 2.
GB1829975A 1975-05-01 1975-05-01 A method of forming a foundry mould Expired GB1478925A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1829975A GB1478925A (en) 1975-05-01 1975-05-01 A method of forming a foundry mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1829975A GB1478925A (en) 1975-05-01 1975-05-01 A method of forming a foundry mould

Publications (1)

Publication Number Publication Date
GB1478925A true GB1478925A (en) 1977-07-06

Family

ID=10110102

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1829975A Expired GB1478925A (en) 1975-05-01 1975-05-01 A method of forming a foundry mould

Country Status (1)

Country Link
GB (1) GB1478925A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050752A1 (en) * 1980-10-21 1982-05-05 Heinrich Wagner Sinto Maschinenfabrik GmbH Flask side-wall

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0050752A1 (en) * 1980-10-21 1982-05-05 Heinrich Wagner Sinto Maschinenfabrik GmbH Flask side-wall

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19930501