GB1342599A - Investment casting cores and their method of manufacture - Google Patents
Investment casting cores and their method of manufactureInfo
- Publication number
- GB1342599A GB1342599A GB1342599DA GB1342599A GB 1342599 A GB1342599 A GB 1342599A GB 1342599D A GB1342599D A GB 1342599DA GB 1342599 A GB1342599 A GB 1342599A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ceramic powder
- mixture
- shaped
- binder
- ceramic
- 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)
- Mold Materials And Core Materials (AREA)
Abstract
1342599 Core moulding processes DOULTON & CO Ltd 3 June 1971 [17 March 1970] 12808/70 Heading B3F [Also in Divisions B5 and C3] In a method of making mould cores for investment casting of metals, a mixture of a ceramic powder and an organic binder is shaped and heated to a temperature insufficient to sinter the ceramic powder but sufficient to remove 48 to 95% by weight of the organic binder and to carbonize the remainder thereby to form a non- thermoplastic body of ceramic powder bonded by carbonaceous residues, the binder being selected so as to decompose during the heating to leave a residue of 0À4 to 14% by weight of the total weight of ceramic powder and carbonaceous residue. The binder, which may be polystyrene, a polyester, polyethylene glycol, or paraffin wax is present in the mixture to be shaped in an amount of 8 to 27% of the total weight. The shaping may be carried out by injection or transfer moulding processes. A sintering flux may be included in the ceramic mixture to be shaped and may be a silica sol., sodium potassium or lithium compound, powdered glass, china or ball clays, or alkaline earth compounds. Ceramic materials mentioned are silica, zirconia, alumina, baria, calcia, magnesia, mullite, calcium phosphate or aluminate, silicon carbide and carbon.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1280870 | 1970-03-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1342599A true GB1342599A (en) | 1974-01-03 |
Family
ID=10011529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1342599D Expired GB1342599A (en) | 1970-03-17 | 1970-03-17 | Investment casting cores and their method of manufacture |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1342599A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4366269A (en) | 1979-06-09 | 1982-12-28 | Nissan Motor Co., Ltd. | Resin coated foundry sand using crystalline unsaturated polyester as binder |
| US5178673A (en) * | 1991-04-12 | 1993-01-12 | Union Carbide Chemicals & Plastics Technology Corporation | Investment casting compositions and processes for the manufacture and use thereof |
| GB2297285A (en) * | 1995-01-25 | 1996-07-31 | T & N Technology Ltd | Investment casting mould |
| US5730915A (en) * | 1993-12-08 | 1998-03-24 | Massachusetts Institute Of Technology | Method for preparation of casting tooling |
| CN114082881A (en) * | 2021-11-26 | 2022-02-25 | 江苏智疆航空科技发展有限公司 | Preparation method of silicon-based ceramic core for aircraft engine blade |
-
1970
- 1970-03-17 GB GB1342599D patent/GB1342599A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4366269A (en) | 1979-06-09 | 1982-12-28 | Nissan Motor Co., Ltd. | Resin coated foundry sand using crystalline unsaturated polyester as binder |
| US5178673A (en) * | 1991-04-12 | 1993-01-12 | Union Carbide Chemicals & Plastics Technology Corporation | Investment casting compositions and processes for the manufacture and use thereof |
| US5730915A (en) * | 1993-12-08 | 1998-03-24 | Massachusetts Institute Of Technology | Method for preparation of casting tooling |
| US5937932A (en) * | 1993-12-08 | 1999-08-17 | Massachusetts Institute Of Technology | Casting tooling |
| GB2297285A (en) * | 1995-01-25 | 1996-07-31 | T & N Technology Ltd | Investment casting mould |
| CN114082881A (en) * | 2021-11-26 | 2022-02-25 | 江苏智疆航空科技发展有限公司 | Preparation method of silicon-based ceramic core for aircraft engine blade |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |