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JPS57156860A - Molding method for casting mold - Google Patents

Molding method for casting mold

Info

Publication number
JPS57156860A
JPS57156860A JP4244281A JP4244281A JPS57156860A JP S57156860 A JPS57156860 A JP S57156860A JP 4244281 A JP4244281 A JP 4244281A JP 4244281 A JP4244281 A JP 4244281A JP S57156860 A JPS57156860 A JP S57156860A
Authority
JP
Japan
Prior art keywords
cavity
sand
packing
model
packed
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
JP4244281A
Other languages
Japanese (ja)
Other versions
JPH0238300B2 (en
Inventor
Akio Yamanishi
Takashi Tono
Kanichi Sato
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.)
Komatsu Ltd
Original Assignee
Komatsu 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 Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP4244281A priority Critical patent/JPS57156860A/en
Publication of JPS57156860A publication Critical patent/JPS57156860A/en
Publication of JPH0238300B2 publication Critical patent/JPH0238300B2/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE:To lower the generation rate of defective goods, and to reduce the manufacturing cost, by forming a coating film on the inside surface of a cavity of a model, and after that, packing the cavity with packing sand having fluidity, irradiating a microwave to the packed sand of each model, and hardening it. CONSTITUTION:A coating film 6 is formed by spraying the inside surface of a cavity 5 of a model 1 with a facing such as water-glass, etc. Subsequently, packing sand 7 having fluidity is thrown into the cavity 5, and the cavity 5 is packed with the packing sand 7 by utilizing the fluid pressure or vibration. As for the packing sand 7, for instance, that which has added water-glass, water and a foaming agent to silica sand is used. Subsequently, the model is put into a heating furnace, a microwave is irradiated from the side of an opening part 2a of a metallic frame 2, the packed sand 7 in the cavity 5 is hardened, and the metallic frame 2 is split and said packed sand is taken out from the inside of the cavity 5.
JP4244281A 1981-03-25 1981-03-25 Molding method for casting mold Granted JPS57156860A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4244281A JPS57156860A (en) 1981-03-25 1981-03-25 Molding method for casting mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4244281A JPS57156860A (en) 1981-03-25 1981-03-25 Molding method for casting mold

Publications (2)

Publication Number Publication Date
JPS57156860A true JPS57156860A (en) 1982-09-28
JPH0238300B2 JPH0238300B2 (en) 1990-08-29

Family

ID=12636186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4244281A Granted JPS57156860A (en) 1981-03-25 1981-03-25 Molding method for casting mold

Country Status (1)

Country Link
JP (1) JPS57156860A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6171152A (en) * 1984-09-13 1986-04-12 Komatsu Ltd Molding method of casting mold

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573440A (en) * 1978-11-27 1980-06-03 Komatsu Ltd Manufacturing method of water soluble mold

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5573440A (en) * 1978-11-27 1980-06-03 Komatsu Ltd Manufacturing method of water soluble mold

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6171152A (en) * 1984-09-13 1986-04-12 Komatsu Ltd Molding method of casting mold
JPS6236779B2 (en) * 1984-09-13 1987-08-08 Komatsu Mfg Co Ltd

Also Published As

Publication number Publication date
JPH0238300B2 (en) 1990-08-29

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