JPS6448638A - Production of collapsible core - Google Patents
Production of collapsible coreInfo
- Publication number
- JPS6448638A JPS6448638A JP20484787A JP20484787A JPS6448638A JP S6448638 A JPS6448638 A JP S6448638A JP 20484787 A JP20484787 A JP 20484787A JP 20484787 A JP20484787 A JP 20484787A JP S6448638 A JPS6448638 A JP S6448638A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- coating
- coating layer
- slurry
- accuracy
- 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.)
- Granted
Links
Landscapes
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
PURPOSE:To improve the quality and accuracy of a product by coating a low temp. decomposing resin solution on surface of a first coated layer, vaporizing and drying solvent and next forming a second coating layer on the upper surface. CONSTITUTION:A core base body 1a containing collapsible agent is dipped into a first slurry to form the first coating layer 2. Next, the low temp. decomposing resin 4 of urea resin, etc., is coated on the surface of the first coating layer 2 by spray or impregnation and the resin is vaporized and dried in the range, which it is not set. Successively, the second coating layer 3 is formed by heat-setting with a second slurry composing of aggregate selected from scaly graphite, mica, metal powder, etc., and solvent. As the resin 4 is heated and set as penetrating in the first and second coating layers 2, 3, sticking strength of both coating layers 2, 3 is improved. By this method, as flowing loss of the coating layers 2, 3 is eliminated, the quality and accuracy of the product are improved.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20484787A JPS6448638A (en) | 1987-08-17 | 1987-08-17 | Production of collapsible core |
US07/225,201 US4834165A (en) | 1987-08-03 | 1988-07-28 | Collapsible core and method for producing the collapsible core feasible for high speed high pressure casting |
DE3826413A DE3826413A1 (en) | 1987-08-03 | 1988-08-03 | COLLABORABLE CORE AND METHOD FOR THE PRODUCTION THEREOF |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20484787A JPS6448638A (en) | 1987-08-17 | 1987-08-17 | Production of collapsible core |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6448638A true JPS6448638A (en) | 1989-02-23 |
JPH0336614B2 JPH0336614B2 (en) | 1991-06-03 |
Family
ID=16497378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20484787A Granted JPS6448638A (en) | 1987-08-03 | 1987-08-17 | Production of collapsible core |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6448638A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007144511A (en) * | 2005-10-31 | 2007-06-14 | Kao Corp | Structural body for producing casting |
WO2020203752A1 (en) * | 2019-03-29 | 2020-10-08 | 旭有機材株式会社 | Mold material composition and method for manufacturing mold using same |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3581687B2 (en) * | 2001-12-26 | 2004-10-27 | 本田技研工業株式会社 | Sand core for casting and method for producing the same |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6422449A (en) * | 1987-07-16 | 1989-01-25 | Ryobi Ltd | Production of collapsible core |
-
1987
- 1987-08-17 JP JP20484787A patent/JPS6448638A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6422449A (en) * | 1987-07-16 | 1989-01-25 | Ryobi Ltd | Production of collapsible core |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007144511A (en) * | 2005-10-31 | 2007-06-14 | Kao Corp | Structural body for producing casting |
WO2020203752A1 (en) * | 2019-03-29 | 2020-10-08 | 旭有機材株式会社 | Mold material composition and method for manufacturing mold using same |
JPWO2020203752A1 (en) * | 2019-03-29 | 2020-10-08 |
Also Published As
Publication number | Publication date |
---|---|
JPH0336614B2 (en) | 1991-06-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |