JPS56148437A - Molding method for mold - Google Patents
Molding method for moldInfo
- Publication number
- JPS56148437A JPS56148437A JP5167680A JP5167680A JPS56148437A JP S56148437 A JPS56148437 A JP S56148437A JP 5167680 A JP5167680 A JP 5167680A JP 5167680 A JP5167680 A JP 5167680A JP S56148437 A JPS56148437 A JP S56148437A
- Authority
- JP
- Japan
- Prior art keywords
- mold
- casting
- self
- thermoplastic resin
- org
- 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
Landscapes
- Mold Materials And Core Materials (AREA)
Abstract
PURPOSE: To prevent shrinkage crack from occuring in the wall thickness crossing part of a casting by adding a proper amount of a thermoplastic resin to self-hardening molding sand in casting a thin-walled steel casting witn an org. self-hardening mold.
CONSTITUTION: In molding a mold with org. self-hardening molding sand compounded with 0.6W1.5wt% furan resin, a suitable amount of a thermoplastic resin such as polypropylene, polyethylene, methacrylic resin is added to org. self-hardening molding sand, and the mold is molded. In casting a steel casting by pouring molten steel after this mold has hardened, the thermoplastic resin absorbs the expansion of the mold and easily decomposes to a gas to 150W300°C; therefore, the parts where the thermoplastic resin has existed are made vacant, resulting in considerably increased deformation capacity of the mold. Hence, at the solidification shrinkage owing to cooling of the steel casting, the occurrence of cracking in the crossing parts of the thickness caused by the shrinkage retardation of the steel casting by the mold is prevented.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5167680A JPS56148437A (en) | 1980-04-21 | 1980-04-21 | Molding method for mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5167680A JPS56148437A (en) | 1980-04-21 | 1980-04-21 | Molding method for mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56148437A true JPS56148437A (en) | 1981-11-17 |
Family
ID=12893475
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5167680A Pending JPS56148437A (en) | 1980-04-21 | 1980-04-21 | Molding method for mold |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56148437A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6719835B2 (en) | 2002-11-08 | 2004-04-13 | Wyo-Ben, Inc. | Sand casting foundry composition and method using shale as anti-veining agent |
| CN103691879A (en) * | 2013-11-26 | 2014-04-02 | 湖州中联机械制造有限公司 | Casting process of steel casting of petroleum machinery blowout preventer |
| CN106269025A (en) * | 2016-08-18 | 2017-01-04 | 江阴联华铸造有限公司 | A kind of train parts furan resin for casting overlay film core sand and preparation method thereof |
-
1980
- 1980-04-21 JP JP5167680A patent/JPS56148437A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6719835B2 (en) | 2002-11-08 | 2004-04-13 | Wyo-Ben, Inc. | Sand casting foundry composition and method using shale as anti-veining agent |
| CN103691879A (en) * | 2013-11-26 | 2014-04-02 | 湖州中联机械制造有限公司 | Casting process of steel casting of petroleum machinery blowout preventer |
| CN103691879B (en) * | 2013-11-26 | 2016-04-20 | 湖州中联机械制造有限公司 | A kind of casting technique of petroleum machinery preventer steel-casting |
| CN106269025A (en) * | 2016-08-18 | 2017-01-04 | 江阴联华铸造有限公司 | A kind of train parts furan resin for casting overlay film core sand and preparation method thereof |
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