GB1458856A - Methods for the production of foundry patterns - Google Patents
Methods for the production of foundry patternsInfo
- Publication number
- GB1458856A GB1458856A GB529674A GB529674A GB1458856A GB 1458856 A GB1458856 A GB 1458856A GB 529674 A GB529674 A GB 529674A GB 529674 A GB529674 A GB 529674A GB 1458856 A GB1458856 A GB 1458856A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plastics
- urea
- water
- pattern
- moulding
- 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.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
1458856 Moulding foundry patterns SULZER BROS Ltd 5 Feb 1974 [28 March 1973] 05296/74 Heading B5A [Also in Divisions B3 and C3] A destructible pattern for forming a foundry mould is produced from a homogeneous liquid solution of urea and a water-soluble macromolecular plastics material having unbranched chains with or without water by crystallizing out the resulting adduct to form a solid solution of the plastics in the urea and moulding the pattern from the solid solution. The homogeneous solution may be prepared by melting a mixture of the urea and plastics and, if required, adding water to the melt, preferably byinjection below the surface of the melt, or alternatively by dissolving the urea and plastics in excess water at below the melting point of the resulting adduct. The plastics is preferably polyvinyl alcohol. The addition product may be crystallized by solidifying individual descending drops to form a granulate or by solidifying the liquid en bloc and subsequently comminuting. The pattern may be moulded by injection moulding.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH443973A CH572368A5 (en) | 1973-03-28 | 1973-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1458856A true GB1458856A (en) | 1976-12-15 |
Family
ID=4276142
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB529674A Expired GB1458856A (en) | 1973-03-28 | 1974-02-05 | Methods for the production of foundry patterns |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5316362B2 (en) |
| CH (1) | CH572368A5 (en) |
| DE (1) | DE2316393C2 (en) |
| FR (1) | FR2223109B1 (en) |
| GB (1) | GB1458856A (en) |
| ZA (1) | ZA74788B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939187A (en) * | 1988-08-22 | 1990-07-03 | Tadao Fujita | Pattern material for making foundry patterns for use in investment casting process |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5647120U (en) * | 1979-09-20 | 1981-04-27 | ||
| JPS6051233U (en) * | 1983-09-14 | 1985-04-10 | 秀島 頴雄 | Roof drain structure |
| MX161477A (en) * | 1984-09-19 | 1990-09-28 | Degussa | PROCEDURE FOR REMOVING THE CONSTITUENTS OF CHAMOMILE |
| EP0459486A3 (en) * | 1990-05-30 | 1993-02-03 | Nkk Corporation | Pattern for manufacturing mold |
-
1973
- 1973-03-28 CH CH443973A patent/CH572368A5/xx not_active IP Right Cessation
- 1973-04-02 DE DE2316393A patent/DE2316393C2/en not_active Expired
- 1973-04-17 JP JP4277373A patent/JPS5316362B2/ja not_active Expired
- 1973-10-15 FR FR7336779A patent/FR2223109B1/fr not_active Expired
-
1974
- 1974-02-05 GB GB529674A patent/GB1458856A/en not_active Expired
- 1974-02-06 ZA ZA740788A patent/ZA74788B/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4939187A (en) * | 1988-08-22 | 1990-07-03 | Tadao Fujita | Pattern material for making foundry patterns for use in investment casting process |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2316393C2 (en) | 1974-05-30 |
| FR2223109A1 (en) | 1974-10-25 |
| DE2316393A1 (en) | 1973-11-08 |
| CH572368A5 (en) | 1976-02-13 |
| JPS49123121A (en) | 1974-11-25 |
| DE2316393B1 (en) | 1973-11-08 |
| ZA74788B (en) | 1974-12-24 |
| FR2223109B1 (en) | 1977-03-11 |
| JPS5316362B2 (en) | 1978-05-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PCNP | Patent ceased through non-payment of renewal fee |