GB672535A - Improvements in or relating to refractory moulds - Google Patents
Improvements in or relating to refractory mouldsInfo
- Publication number
- GB672535A GB672535A GB300450A GB300450A GB672535A GB 672535 A GB672535 A GB 672535A GB 300450 A GB300450 A GB 300450A GB 300450 A GB300450 A GB 300450A GB 672535 A GB672535 A GB 672535A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alumina
- pattern
- feb
- coating
- coated
- 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)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
672,535. Moulding processes; mould compositions. BRISTOL AEROPLANE CO., Ltd. Feb. 1, 1951 [Feb. 6, 1950; April 3, 1950; Nov. 16, 1950], Nos. 3004/50, 8362/50, and 28082/50. Class 83 (i). [Also in Group V] A refractory mould is made by (a), coating a destructible pattern, e.g. of wax, with an emulsion containing finely-powdered refractory filler and a binder, e.g. alumina, sodium silicate and water and wetting and defoaming agents; (b) allowing to dry; (c) investing in a slurry containing sand and cement; (d) vibrating; (e) removing excess of water; and (f) drying and baking. After the step (a) above the coated pattern may have applied to it dry powder which may be fine or coarse alumina or crushed coke, activated carbon or alumina, or silica gel. This assists drying and may roughen the coating. After the step (b) above the pattern may be dipped in or otherwise coated with ethyl silicate, neat or in solution, and dried again. This treatment may be repeated as required. The slurry (c) may comprise sillimanite or molochite, which is a by-product of the china clay industry and comprises aluminium silicate, and Portland cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB300450A GB672535A (en) | 1950-02-06 | 1950-02-06 | Improvements in or relating to refractory moulds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB300450A GB672535A (en) | 1950-02-06 | 1950-02-06 | Improvements in or relating to refractory moulds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB672535A true GB672535A (en) | 1952-05-21 |
Family
ID=9750127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB300450A Expired GB672535A (en) | 1950-02-06 | 1950-02-06 | Improvements in or relating to refractory moulds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB672535A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3077413A (en) * | 1957-02-27 | 1963-02-12 | Carborundum Co | Ceramic fiber products and method and apparatus for manufacture thereof |
| DE1234939B (en) * | 1963-09-11 | 1967-02-23 | Philips Nv | Process for the production of casting molds |
| EP0020373A4 (en) * | 1978-12-04 | 1980-09-29 | Caterpillar Tractor Co | Method of making and using a ceramic shell mold. |
| GB2146572A (en) * | 1983-09-15 | 1985-04-24 | John Michael Jones | Closed and hollow fibre re-inforced plastic mouldings |
| DE4412798C1 (en) * | 1994-04-14 | 1995-04-06 | Thyssen Industrie | Process for producing and using a ceramic shell as casting mould with reducing properties |
| CN105522112A (en) * | 2016-01-07 | 2016-04-27 | 上海交通大学 | High-collapsibility ceramic shell for manufacturing magnesium alloy fusible pattern and preparation method for high-collapsibility ceramic shell |
-
1950
- 1950-02-06 GB GB300450A patent/GB672535A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5617912A (en) * | 1904-04-14 | 1997-04-08 | Ballewski; Heinrich | Process for preparing and using a ceramic shell as a casting mold with reducing properties |
| US3077413A (en) * | 1957-02-27 | 1963-02-12 | Carborundum Co | Ceramic fiber products and method and apparatus for manufacture thereof |
| DE1234939B (en) * | 1963-09-11 | 1967-02-23 | Philips Nv | Process for the production of casting molds |
| EP0020373A4 (en) * | 1978-12-04 | 1980-09-29 | Caterpillar Tractor Co | Method of making and using a ceramic shell mold. |
| EP0020373A1 (en) * | 1978-12-04 | 1981-01-07 | Caterpillar Tractor Co | Method of making and using a ceramic shell mold. |
| GB2146572A (en) * | 1983-09-15 | 1985-04-24 | John Michael Jones | Closed and hollow fibre re-inforced plastic mouldings |
| DE4412798C1 (en) * | 1994-04-14 | 1995-04-06 | Thyssen Industrie | Process for producing and using a ceramic shell as casting mould with reducing properties |
| EP0679458A1 (en) * | 1994-04-14 | 1995-11-02 | Thyssen Industrie Ag | Method for the production and use of a ceramic shell for casting with reducing properties |
| CN105522112A (en) * | 2016-01-07 | 2016-04-27 | 上海交通大学 | High-collapsibility ceramic shell for manufacturing magnesium alloy fusible pattern and preparation method for high-collapsibility ceramic shell |
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