GB303858A - Binder for foundry cores - Google Patents
Binder for foundry coresInfo
- Publication number
- GB303858A GB303858A GB555/29A GB55529A GB303858A GB 303858 A GB303858 A GB 303858A GB 555/29 A GB555/29 A GB 555/29A GB 55529 A GB55529 A GB 55529A GB 303858 A GB303858 A GB 303858A
- Authority
- GB
- United Kingdom
- Prior art keywords
- binder
- sand
- cores
- over
- boric
- 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
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/167—Mixtures of inorganic and organic binding agents
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
303,858. Stahn, A. Jan. 11, 1928, [Convention date]. Core materials. - Cores are made from sand, which may contain a small proportion of clay, loam, lime, &c., and an inorganic binder, such as boric or phosphoric acid, which forms a glassy melt when heated to over 150‹ C. but below 400‹ C. and preferably below 250‹ C. and which loses its binding power at casting temperatures, i.e. over 1000‹ C. An organic binder may also be added to hold the grains of sand together until the inorganic binder becomes effective in the drying stove. 2 to 4 per cent of boric acid may be be mixed with the sand or the binder may be applied to the surface of cores or moulds.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE303858X | 1928-01-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB303858A true GB303858A (en) | 1929-11-21 |
Family
ID=6114238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB555/29A Expired GB303858A (en) | 1928-01-11 | 1929-01-07 | Binder for foundry cores |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB303858A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2487207A (en) * | 1946-04-08 | 1949-11-08 | Edward S Adams | Core material composition, mold core, and process for making mold cores |
| US2521614A (en) * | 1946-01-30 | 1950-09-05 | Emerik Imre Valyi | Investment compositions and method of producing refractory molds therefrom |
| US2618530A (en) * | 1949-06-18 | 1952-11-18 | Aluminum Co Of America | Mold coating |
| US2696479A (en) * | 1950-05-04 | 1954-12-07 | Bayer Ag | Molding materials for the preparation of foundry cores and molds |
-
1929
- 1929-01-07 GB GB555/29A patent/GB303858A/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2521614A (en) * | 1946-01-30 | 1950-09-05 | Emerik Imre Valyi | Investment compositions and method of producing refractory molds therefrom |
| US2487207A (en) * | 1946-04-08 | 1949-11-08 | Edward S Adams | Core material composition, mold core, and process for making mold cores |
| US2618530A (en) * | 1949-06-18 | 1952-11-18 | Aluminum Co Of America | Mold coating |
| US2696479A (en) * | 1950-05-04 | 1954-12-07 | Bayer Ag | Molding materials for the preparation of foundry cores and molds |
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