JPS5680344A - Binder for shell mold - Google Patents

Binder for shell mold

Info

Publication number
JPS5680344A
JPS5680344A JP15764079A JP15764079A JPS5680344A JP S5680344 A JPS5680344 A JP S5680344A JP 15764079 A JP15764079 A JP 15764079A JP 15764079 A JP15764079 A JP 15764079A JP S5680344 A JPS5680344 A JP S5680344A
Authority
JP
Japan
Prior art keywords
mold
binder
phenolic resin
novolak type
type phenolic
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
JP15764079A
Other languages
Japanese (ja)
Inventor
Tetsuo Kanekawa
Tadashi Sato
Shigemitsu Yoshimi
Kuniaki Mizuno
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.)
Toyota Motor Corp
Aisin Chemical Co Ltd
Original Assignee
Toyota Motor Corp
Aisin Chemical Co 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 Toyota Motor Corp, Aisin Chemical Co Ltd filed Critical Toyota Motor Corp
Priority to JP15764079A priority Critical patent/JPS5680344A/en
Publication of JPS5680344A publication Critical patent/JPS5680344A/en
Pending legal-status Critical Current

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  • Mold Materials And Core Materials (AREA)

Abstract

PURPOSE: To produce a mold which is superior in dimensional accuracy, does not produce any defect such as cracking and permits the use of regenerated sand as well, by using the specific novolak type phenolic resin as a binder at the time of producing bindercoated sand for shell molds.
CONSTITUTION: In producing a mold used in a shell mold method, the surfaces of sand for mold are coated with a binder. As the binder, a novolak type phenolic resin mixed with 5W20% hexamine is added at 0.5W5pts. based on 100pts. snad. The novolak type phenolic resin is the modified novolak type phenolic resin modified by bisphenols and cumarone compounds, and the one of 1,500W3,000 in the weight average mol.wt. is used. Calcium stearate, waxes, salicylic acids, clay, iron oxide or urea may be used as binding assistants. Cracking of the mold owing to thermal expansion at the casting of molten metal does not occur, and the use of regenerated sand is possible as well.
COPYRIGHT: (C)1981,JPO&Japio
JP15764079A 1979-12-04 1979-12-04 Binder for shell mold Pending JPS5680344A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15764079A JPS5680344A (en) 1979-12-04 1979-12-04 Binder for shell mold

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15764079A JPS5680344A (en) 1979-12-04 1979-12-04 Binder for shell mold

Publications (1)

Publication Number Publication Date
JPS5680344A true JPS5680344A (en) 1981-07-01

Family

ID=15654136

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15764079A Pending JPS5680344A (en) 1979-12-04 1979-12-04 Binder for shell mold

Country Status (1)

Country Link
JP (1) JPS5680344A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56165660A (en) * 1980-05-02 1981-12-19 Canon Inc Sheet classification device
CN103331408A (en) * 2013-07-05 2013-10-02 亚新铸造（苏州）有限公司 Resin sand used for steel casting and preparation method thereof

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56165660A (en) * 1980-05-02 1981-12-19 Canon Inc Sheet classification device
JPH0154264B2 (en) * 1980-05-02 1989-11-17 Canon Kk
CN103331408A (en) * 2013-07-05 2013-10-02 亚新铸造（苏州）有限公司 Resin sand used for steel casting and preparation method thereof
CN103331408B (en) * 2013-07-05 2015-08-05 亚新铸造（苏州）有限公司 A kind of steel-casting resin sand and preparation method thereof

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