GB1390618A - Casting of metal articles - Google Patents
Casting of metal articlesInfo
- Publication number
- GB1390618A GB1390618A GB3640271A GB3640271A GB1390618A GB 1390618 A GB1390618 A GB 1390618A GB 3640271 A GB3640271 A GB 3640271A GB 3640271 A GB3640271 A GB 3640271A GB 1390618 A GB1390618 A GB 1390618A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mould
- metal
- casting
- coil
- die
- 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
- B22C9/06—Permanent moulds for shaped castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
- B22D27/045—Directionally solidified castings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
1390618 Casting processes; continuous casting DEFENCE SECRETARY OF STATE FOR 27 July 1972 [3 Aug 1971] 36402/71 Heading B3F Metal articles are cast in a mould of a metal of good conductivity, e.g. Cu, which has a R.F. induction coil therearound, the casting process including the steps of introducing metal in the mould, repelling the metal from the surface of the mould, by magnetic flux generated by the coil for at least the period of time during which the metal surface is liquid, and cooling the metal. As exemplified, a turbine blade is cast in a copper two-part mould 1, 2 (of circular external section and hollow to form coolant jackets) located in a R.F. induction coil 8. Liquid metal is poured, in a vacuum or atmosphere inert to the metal, into the pre-heated mould cavity 3. The metal takes the shape of the mould cavity but does not come into physical contact with the mould surface. Unidirectional solidification of the metal can be induced by lowering the mould from the coil during solidification or cutting off the power supply to subsequent sections of the coil 8 upwardly. A crystal growth zone (not shown), may be provided at the base of the mould for establishing a columnar crystal structure. The process can be used for Ti, Al, Cr, Zr, Nb, Mo, Ta, W and alloys of these metals and may be continuous casting. Mould coatings.-To increase electrical conductivity the mould may be of copper coated with silver. The mould may be cooled by water or gas and the induction coil may heat the mould contents. Granules of metal may be placed in the mould and melted therein by the induction coil. An iron alloy casting with a hardened surface can be prepared by melting iron-based alloy in the mould, rapidly cooling the surface parts to give hard-chilled alloy and more slowly cooling the internal parts of the casting to form a soft core. Continuous casting can be effected by supplying metal continuously or in batches to one end of an open-ended die, melting the metal in the die by induction, solidifying the casting in the die and withdrawing the casting from the other end of the die. The repulsion of the casting surface reduces friction. A casting may be heattreated or coated. A composite casting can be made by melting iron powder around a copper core in a mould. The copper core may be cooled during casting.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3640271A GB1390618A (en) | 1971-08-03 | 1971-08-03 | Casting of metal articles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3640271A GB1390618A (en) | 1971-08-03 | 1971-08-03 | Casting of metal articles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1390618A true GB1390618A (en) | 1975-04-16 |
Family
ID=10387809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3640271A Expired GB1390618A (en) | 1971-08-03 | 1971-08-03 | Casting of metal articles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1390618A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2148761A (en) * | 1983-09-26 | 1985-06-05 | Kawachi Aluminium Casting | Casting plate-like articles |
CN103752809A (en) * | 2014-01-07 | 2014-04-30 | 南通宏德机电有限公司 | Method for eliminating aluminum alloy casting pore defects |
GB2516991A (en) * | 2013-08-02 | 2015-02-11 | Castings Technology Internat Ltd | Metal component forming |
EP2610021A3 (en) * | 2011-12-30 | 2017-11-15 | United Technologies Corporation | High temperature directionally solidified and single crystal die casting |
-
1971
- 1971-08-03 GB GB3640271A patent/GB1390618A/en not_active Expired
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2148761A (en) * | 1983-09-26 | 1985-06-05 | Kawachi Aluminium Casting | Casting plate-like articles |
EP2610021A3 (en) * | 2011-12-30 | 2017-11-15 | United Technologies Corporation | High temperature directionally solidified and single crystal die casting |
GB2516991A (en) * | 2013-08-02 | 2015-02-11 | Castings Technology Internat Ltd | Metal component forming |
GB2516992A (en) * | 2013-08-02 | 2015-02-11 | Castings Technology Internat Ltd | Applying heat to form a component |
CN103752809A (en) * | 2014-01-07 | 2014-04-30 | 南通宏德机电有限公司 | Method for eliminating aluminum alloy casting pore defects |
CN103752809B (en) * | 2014-01-07 | 2015-11-25 | 南通宏德机电有限公司 | A kind of method eliminating aluminium alloy castings hole defect |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |