JPS55149742A - Resin-coated sand particle for casting - Google Patents

Resin-coated sand particle for casting

Info

Publication number
JPS55149742A
JPS55149742A JP5698379A JP5698379A JPS55149742A JP S55149742 A JPS55149742 A JP S55149742A JP 5698379 A JP5698379 A JP 5698379A JP 5698379 A JP5698379 A JP 5698379A JP S55149742 A JPS55149742 A JP S55149742A
Authority
JP
Japan
Prior art keywords
resin
phenolic resin
sand particles
arbitrary
production
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
JP5698379A
Other languages
Japanese (ja)
Inventor
Yasunobu Yamamoto
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 JP5698379A priority Critical patent/JPS55149742A/en
Publication of JPS55149742A publication Critical patent/JPS55149742A/en
Pending legal-status Critical Current

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  • Mold Materials And Core Materials (AREA)

Abstract

PURPOSE: To eliminate the cracking and dimensional defect of castings of the shell mold using the captioned sand particles obtained by coating the sand particles by the binder composed of the specific ratios of novolak type phenolic resin and ketone resin.
CONSTITUTION: At an arbitrary timing of the entire stage from the start of the production of novolak type phenolic resin up to its end and after its production, 5W 50pts.wt. of ketone resin based on 100pts.wt. of the phenolic resin and sand particles may be mixed in arbitrary order by using an arbitrary known method. However, it is preferable to agitate and mix these evenly by adding these at a low temperature as far as possible after the completion of the synthesis of the phenolic resin. This methods enables the much more effective utilization of the cushion effect of the ketone resin. If necessary, it is possible to contain assistants such as calcium stearate, waxes and clay into this coated sand.
COPYRIGHT: (C)1980,JPO&Japio
JP5698379A 1979-05-11 1979-05-11 Resin-coated sand particle for casting Pending JPS55149742A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5698379A JPS55149742A (en) 1979-05-11 1979-05-11 Resin-coated sand particle for casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5698379A JPS55149742A (en) 1979-05-11 1979-05-11 Resin-coated sand particle for casting

Publications (1)

Publication Number Publication Date
JPS55149742A true JPS55149742A (en) 1980-11-21

Family

ID=13042728

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5698379A Pending JPS55149742A (en) 1979-05-11 1979-05-11 Resin-coated sand particle for casting

Country Status (1)

Country Link
JP (1) JPS55149742A (en)

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