JPS5594750A - Resin coating sand for shell core molding - Google Patents
Resin coating sand for shell core moldingInfo
- Publication number
- JPS5594750A JPS5594750A JP153179A JP153179A JPS5594750A JP S5594750 A JPS5594750 A JP S5594750A JP 153179 A JP153179 A JP 153179A JP 153179 A JP153179 A JP 153179A JP S5594750 A JPS5594750 A JP S5594750A
- Authority
- JP
- Japan
- Prior art keywords
- core
- sand
- coated
- resin
- thermoplastic resin
- 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
Links
Abstract
PURPOSE: The captioned mold material of superior decay characteristic after casting which is obtainable by further coating thermoplastic resin on the surfaces of molding sand having been coated with thermosetting resin.
CONSTITUTION: Thermosetting resin such as phenolic resin is coated on the molding sand having been selected as core sand, after which further thermoplastic resin such as acrylic resin is coated thereon. If this coated sand is packed in the croe box of pattern cavity part, the thermosetting resin binds the sand particles along with heating to form the core of the specified shape and at the same time the thermoplastic resin melts, thereby interspersing and dispersing in the core. If this core is taken out from the core box and is built in a mold followed by pouring of molten metal, then the poured molten metal initially holds the strength of the core but as time elapses the thermoplastic resin decomposes and disappears and therefore cavities are formed. Hence, the residual strength of the core decreases after the casting and the core may be reading removed from the casting with light impact.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP153179A JPS5594750A (en) | 1979-01-09 | 1979-01-09 | Resin coating sand for shell core molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP153179A JPS5594750A (en) | 1979-01-09 | 1979-01-09 | Resin coating sand for shell core molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5594750A true JPS5594750A (en) | 1980-07-18 |
Family
ID=11504095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP153179A Pending JPS5594750A (en) | 1979-01-09 | 1979-01-09 | Resin coating sand for shell core molding |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5594750A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1464419A1 (en) * | 2003-04-01 | 2004-10-06 | Gun Ei Chemical Industry Co., Ltd. | Resin coated sand for casting moulds |
| CN102773403A (en) * | 2012-07-07 | 2012-11-14 | 山西宇清环保有限公司 | Method for producing overturning plate valve cover by resin sand |
-
1979
- 1979-01-09 JP JP153179A patent/JPS5594750A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1464419A1 (en) * | 2003-04-01 | 2004-10-06 | Gun Ei Chemical Industry Co., Ltd. | Resin coated sand for casting moulds |
| US7267876B2 (en) | 2003-04-01 | 2007-09-11 | Gun Ei Chemical Industry Co., Ltd. | Resin-coated sand |
| CN102773403A (en) * | 2012-07-07 | 2012-11-14 | 山西宇清环保有限公司 | Method for producing overturning plate valve cover by resin sand |
| CN102773403B (en) * | 2012-07-07 | 2014-02-12 | 山西宇清环保有限公司 | Method for producing overturning plate valve cover by resin sand |
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