JPS5586653A - Mold forming method using microwave - Google Patents

Mold forming method using microwave

Info

Publication number
JPS5586653A
JPS5586653A JP15919078A JP15919078A JPS5586653A JP S5586653 A JPS5586653 A JP S5586653A JP 15919078 A JP15919078 A JP 15919078A JP 15919078 A JP15919078 A JP 15919078A JP S5586653 A JPS5586653 A JP S5586653A
Authority
JP
Japan
Prior art keywords
casting sand
microwaves
substance
coating
harden
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
JP15919078A
Other languages
Japanese (ja)
Inventor
Kanichi Sato
Akio Yamanishi
Takashi Tono
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 JP15919078A priority Critical patent/JPS5586653A/en
Publication of JPS5586653A publication Critical patent/JPS5586653A/en
Pending legal-status Critical Current

Links

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  • Molds, Cores, And Manufacturing Methods Thereof (AREA)

Abstract

PURPOSE: To harden the surface positions of casting sand in the same hardness and same time as in other positions, by filling the pattern with casting sand containing thermoset or thermoplastic resin and dielectric substance for microwaves, and coating the casting sand surface of heat insulation material, then radiating microwaves.
CONSTITUTION: A pattern 1 of specified shape made of silicone rubber or the like is filled with casting sand 3 containing thermoset or thermoplastic resin and dielectric substance with respect to microwaves. Then, a filling port 4 is covered with a coating 5 made from heat insulation substance such as silicone rubber or weak heating substance with respect to microwaves to cover the surface positions 3a of the casting sand 3. Then, microwaves 6 are radiated from above the coating 5 to harden the casting sand 3, and a mold is obtained by releasing. As weak heating substance, a material of which dielectric loss coefficient is 20×104, such as glass fiber, wooden material, pyrex glass or epoxy resin, may be used.
COPYRIGHT: (C)1980,JPO&Japio
JP15919078A 1978-12-26 1978-12-26 Mold forming method using microwave Pending JPS5586653A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15919078A JPS5586653A (en) 1978-12-26 1978-12-26 Mold forming method using microwave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15919078A JPS5586653A (en) 1978-12-26 1978-12-26 Mold forming method using microwave

Publications (1)

Publication Number Publication Date
JPS5586653A true JPS5586653A (en) 1980-06-30

Family

ID=15688269

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15919078A Pending JPS5586653A (en) 1978-12-26 1978-12-26 Mold forming method using microwave

Country Status (1)

Country Link
JP (1) JPS5586653A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009125799A (en) * 2007-11-28 2009-06-11 Aisin Takaoka Ltd Method for producing green sand mold

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842531A (en) * 1971-10-04 1973-06-20
JPS54163723A (en) * 1978-06-16 1979-12-26 Nippon Musical Instruments Mfg Production of cast mold

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842531A (en) * 1971-10-04 1973-06-20
JPS54163723A (en) * 1978-06-16 1979-12-26 Nippon Musical Instruments Mfg Production of cast mold

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009125799A (en) * 2007-11-28 2009-06-11 Aisin Takaoka Ltd Method for producing green sand mold

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