GB501345A - Improvements in and relating to the manufacture of cores for hollow metal castings - Google Patents
Improvements in and relating to the manufacture of cores for hollow metal castingsInfo
- Publication number
- GB501345A GB501345A GB2324237A GB2324237A GB501345A GB 501345 A GB501345 A GB 501345A GB 2324237 A GB2324237 A GB 2324237A GB 2324237 A GB2324237 A GB 2324237A GB 501345 A GB501345 A GB 501345A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- casting
- slip
- kaolin
- contracts
- 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
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
501,345. Casting slip. CRONING, J. Aug. 24, 1937, No. 23242. [Class 87 (ii)] [Also in Group XXII] A core for use in casting metal is made by pouring a slip made from clay, kaolin, quartz, chamotte, barium sulphate or the like into a two part plaster of Paris mould and, after allowing sufficient time for the deposition of a hollow core, pouring out the excess. The core contracts from the mould during drying and car then be removed. After use the core can be removed from a casting, by shaking out if it sinters and breaks, this being favoured if the core is thin, or by disintegrating in water if o a material, such as .fatty clay or kaolin, which contracts more rapidly than the cast metal. The porosity of the core can be increased by adding to the slip granular naphthalene or other material which can be gasefied by heat before or during. casting or by perforating the core while plastic. This may be done by a hand guided tool having pins h reciprocated by a cam c on a shaft b driven at 2,000 revolutions per minute. The holes may be about 6À1 to 0À2 mm. in diameter to avoid penetration by the molten metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2324237A GB501345A (en) | 1937-08-24 | 1937-08-24 | Improvements in and relating to the manufacture of cores for hollow metal castings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2324237A GB501345A (en) | 1937-08-24 | 1937-08-24 | Improvements in and relating to the manufacture of cores for hollow metal castings |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB501345A true GB501345A (en) | 1939-02-24 |
Family
ID=10192465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2324237A Expired GB501345A (en) | 1937-08-24 | 1937-08-24 | Improvements in and relating to the manufacture of cores for hollow metal castings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB501345A (en) |
-
1937
- 1937-08-24 GB GB2324237A patent/GB501345A/en not_active Expired
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