JPS57159235A - Molding method for mold - Google Patents

Molding method for mold

Info

Publication number
JPS57159235A
JPS57159235A JP4522181A JP4522181A JPS57159235A JP S57159235 A JPS57159235 A JP S57159235A JP 4522181 A JP4522181 A JP 4522181A JP 4522181 A JP4522181 A JP 4522181A JP S57159235 A JPS57159235 A JP S57159235A
Authority
JP
Japan
Prior art keywords
plate
flask
sand
rapping
molding
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
JP4522181A
Other languages
Japanese (ja)
Other versions
JPS631145B2 (en
Inventor
Nagato Unosaki
Shigeru Ito
Ryoji Kanayama
Hisashi Harada
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.)
Sintokogio Ltd
Shinto Industrial Co Ltd
Original Assignee
Sintokogio Ltd
Shinto Kogyo 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 Sintokogio Ltd, Shinto Kogyo KK filed Critical Sintokogio Ltd
Priority to JP4522181A priority Critical patent/JPS57159235A/en
Publication of JPS57159235A publication Critical patent/JPS57159235A/en
Publication of JPS631145B2 publication Critical patent/JPS631145B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C9/00—Moulds or cores; Moulding processes
    • B22C9/12—Treating moulds or cores, e.g. drying, hardening
    • B22C9/126—Hardening by freezing

Abstract

PURPOSE:To permit easy rapping even in the case of an intricate pattern shape by freezing and hardening the molding sand contg. water, a binder, etc. in the space delineated by a molding flask and a pattern plate cooled by a refrigerate then rapping the mold. CONSTITUTION:Liquid nitrogen is injected through nozzles 5 to the bottom surface of a pattern plate 1 to cool the plate 1 down to prescribed temp., after which it is moved upward by the operation of a cylinder, wereby it is registered to a molding flask 2. At the same time, these are moved upward in one body to bring the top surface of the flask 2 into press contact with the bottom surface of an auxiliary flask 9, so that a hermetic space is formed in the flask 2 with the plate 1 and a blow plate 8. The molding sand in a blow head 6 is packed through blow holes 7 into this space by supplying compressed air to said head. At the same time, the plate 1 is moved upward to press the sand 3 to the bottom surface of the plate 8 and to squeeze, after which the flask 2 is lowered together with the plate 1 and this state is maintained for a prescribed time to allow the sand 3 on the surface of the plate 1 to freeze and harden. Next, the plare 1 is parted. The collapsion of the mold is prevented in the deep island part of poor rapping characteristics.
JP4522181A 1981-03-26 1981-03-26 Molding method for mold Granted JPS57159235A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4522181A JPS57159235A (en) 1981-03-26 1981-03-26 Molding method for mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4522181A JPS57159235A (en) 1981-03-26 1981-03-26 Molding method for mold

Publications (2)

Publication Number Publication Date
JPS57159235A true JPS57159235A (en) 1982-10-01
JPS631145B2 JPS631145B2 (en) 1988-01-11

Family

ID=12713205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4522181A Granted JPS57159235A (en) 1981-03-26 1981-03-26 Molding method for mold

Country Status (1)

Country Link
JP (1) JPS57159235A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525935A1 (en) * 1982-04-26 1983-11-04 Sintokogio Ltd METHOD OF MANUFACTURING MOLDS BY FREEZING THEN CURING SAND
WO2016089362A1 (en) * 2014-12-02 2016-06-09 Halliburton Energy Services, Inc. Thermal sink systems for cooling a mold assembly

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2525935A1 (en) * 1982-04-26 1983-11-04 Sintokogio Ltd METHOD OF MANUFACTURING MOLDS BY FREEZING THEN CURING SAND
WO2016089362A1 (en) * 2014-12-02 2016-06-09 Halliburton Energy Services, Inc. Thermal sink systems for cooling a mold assembly

Also Published As

Publication number Publication date
JPS631145B2 (en) 1988-01-11

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