GB1051689A - - Google Patents
Info
- Publication number
- GB1051689A GB1051689A GB1051689DA GB1051689A GB 1051689 A GB1051689 A GB 1051689A GB 1051689D A GB1051689D A GB 1051689DA GB 1051689 A GB1051689 A GB 1051689A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coating
- layer
- refractory material
- sprinkled
- grain size
- 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
- B22C1/165—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 in the manufacture of multilayered shell moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
1,051,689. Moulding processes. SOC. DES FORGES ET ATELIERS DU CREUSOT. March 18, 1964 [March 26, 1963], No. 11531/64. Heading B3F. A method of making a refractory shell mould comprises coating an expendable pattern with a contact layer, coating the contact layer with a first slurry of a refractory material to form a primary layer on the contact layer, and then coating the primary layer with one or more successive slurries of refractory material to form one or more outer layers. The grain size of the refractory material used in the slurry forming the primary layer is intermediate the grain size for the material for forming the contact and outer layers. Each of the layers is sprinkled before it is completely dry with a dry powdered fireclay containing approximately 40% by weight of alumina, the grain size of the fireclay progressively increasing from that sprinkled on the primary layer to that sprinkled on the outer layer. The slurry for coating the pattern comprises a mixture of powdered silica and aluminium silicate, a colloidal silica salt, a foam depressant and a sedimentation inhibitor. The coated pattern is invested, in an enclosure, with a pourable refractory material and the resultant assembly is dried. An example of the composition of the slurries is given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR929214A FR1369354A (en) | 1963-03-26 | 1963-03-26 | Process for making refractory molds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1051689A true GB1051689A (en) | 1900-01-01 |
Family
ID=8800073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1051689D Expired GB1051689A (en) | 1963-03-26 |
Country Status (4)
| Country | Link |
|---|---|
| ES (1) | ES297855A1 (en) |
| FR (1) | FR1369354A (en) |
| GB (1) | GB1051689A (en) |
| OA (1) | OA00289A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3538213A (en) * | 1967-08-25 | 1970-11-03 | Uniroyal Inc | Method of spray forming destructible forms |
| FR2622131A1 (en) * | 1987-10-21 | 1989-04-28 | Renault | Foundry liquid die dressing, especially for continuous centrifugal casting |
-
0
- GB GB1051689D patent/GB1051689A/en not_active Expired
-
1963
- 1963-03-26 FR FR929214A patent/FR1369354A/en not_active Expired
-
1964
- 1964-03-21 ES ES0297855A patent/ES297855A1/en not_active Expired
- 1964-08-25 OA OA50290A patent/OA00289A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3538213A (en) * | 1967-08-25 | 1970-11-03 | Uniroyal Inc | Method of spray forming destructible forms |
| FR2622131A1 (en) * | 1987-10-21 | 1989-04-28 | Renault | Foundry liquid die dressing, especially for continuous centrifugal casting |
Also Published As
| Publication number | Publication date |
|---|---|
| OA00289A (en) | 1966-05-15 |
| FR1369354A (en) | 1964-08-14 |
| ES297855A1 (en) | 1964-08-16 |
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