JPS55156638A - Binder and coating sand for mold and molding method of mold using these - Google Patents

Binder and coating sand for mold and molding method of mold using these

Info

Publication number
JPS55156638A
JPS55156638A JP6535379A JP6535379A JPS55156638A JP S55156638 A JPS55156638 A JP S55156638A JP 6535379 A JP6535379 A JP 6535379A JP 6535379 A JP6535379 A JP 6535379A JP S55156638 A JPS55156638 A JP S55156638A
Authority
JP
Japan
Prior art keywords
mold
binder
solvent
molding
sand
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
JP6535379A
Other languages
Japanese (ja)
Inventor
Kazuyuki Nishikawa
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
Original Assignee
Sintokogio 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 Sintokogio Ltd filed Critical Sintokogio Ltd
Priority to JP6535379A priority Critical patent/JPS55156638A/en
Publication of JPS55156638A publication Critical patent/JPS55156638A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To produce the mold suited for the production of light alloy castings by charging the molding sand comprising by adding the binder for mold prepared by dissolving polyacrylic amide in water or quick-drying type solvent to dry sand and kneading into a molding flask then letting the foregoing solvent evaporate away thereby hardening the same.
CONSTITUTION: The binder for casting is prepared by dissolving polyacrylic amide which is generally used for flocculants of water treatment in water or quick-drying solvent (example; methanol). Next, the molding sand prepared by adding this binder to dry sand and kneading the mixture is charged into a core box or molding flask and pressure air is blown into the mold or the inside of the mold is pressure- reduced by using a vacuum pump or the like to dissipate away the solvent contained in the mold, whereby the mold is dry-hardened and molded. Here, the binder is compounded with the dry sand at such a ratio at which the polyacrylic amide becomes 1W3% and the solvent 5W20%. This mold has ordinary-temperature and heat resistance, permits easy core removal and is suited for molding the metal die of the metals of low pouring temperature.
COPYRIGHT: (C)1980,JPO&Japio
JP6535379A 1979-05-25 1979-05-25 Binder and coating sand for mold and molding method of mold using these Pending JPS55156638A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6535379A JPS55156638A (en) 1979-05-25 1979-05-25 Binder and coating sand for mold and molding method of mold using these

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6535379A JPS55156638A (en) 1979-05-25 1979-05-25 Binder and coating sand for mold and molding method of mold using these

Publications (1)

Publication Number Publication Date
JPS55156638A true JPS55156638A (en) 1980-12-05

Family

ID=13284497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6535379A Pending JPS55156638A (en) 1979-05-25 1979-05-25 Binder and coating sand for mold and molding method of mold using these

Country Status (1)

Country Link
JP (1) JPS55156638A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103817289A (en) * 2014-03-19 2014-05-28 山西晋城无烟煤矿业集团有限责任公司 Method for casting middle ledge of heavy scraper

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103817289A (en) * 2014-03-19 2014-05-28 山西晋城无烟煤矿业集团有限责任公司 Method for casting middle ledge of heavy scraper
CN103817289B (en) * 2014-03-19 2016-03-23 山西晋城无烟煤矿业集团有限责任公司 Ledge casting method in the middle part of heavy type scratch board machine

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