GB725318A - Moulds for metal castings - Google Patents
Moulds for metal castingsInfo
- Publication number
- GB725318A GB725318A GB4858/53A GB485853A GB725318A GB 725318 A GB725318 A GB 725318A GB 4858/53 A GB4858/53 A GB 4858/53A GB 485853 A GB485853 A GB 485853A GB 725318 A GB725318 A GB 725318A
- Authority
- GB
- United Kingdom
- Prior art keywords
- layer
- mould
- binder
- silicic acid
- water
- 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
- B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
725,318. Moulding processes. SULZER FRERES SOC. ANON. Feb. 20, 1953 [March 11, 1952], No. 4858/53. Class 83 (1). In a method of preparing a mould containing a layer of refractory mixed with a silicic acid sol binder, the said layer is treated with a hygroscopic medium for withdrawing water therefrom before the application of a second mould layer. As applied to a mould for precision casting, a wax pattern is coated with quartz flour bound with a silicic acid sol, and the coated pattern immersed in high concentration alcohol for at least one minute until the required amount of water has been withdrawn, such that the capacity of the binder for absorbing more water disappears. A mass of moist coarser grained moulding material which may include an inorganic acid as a binder is then applied, without its water content affecting the silicic acid sol of the layer. The mould is then dried and fired.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH725318X | 1952-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB725318A true GB725318A (en) | 1955-03-02 |
Family
ID=4531863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4858/53A Expired GB725318A (en) | 1952-03-11 | 1953-02-20 | Moulds for metal castings |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB725318A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172176A (en) * | 1964-03-26 | 1965-03-09 | Greenwood Ronald | Method of making ceramic molds |
-
1953
- 1953-02-20 GB GB4858/53A patent/GB725318A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3172176A (en) * | 1964-03-26 | 1965-03-09 | Greenwood Ronald | Method of making ceramic molds |
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