GB798358A - Improvements in or relating to the production of castings with internal passages - Google Patents
Improvements in or relating to the production of castings with internal passagesInfo
- Publication number
- GB798358A GB798358A GB3063653A GB3063653A GB798358A GB 798358 A GB798358 A GB 798358A GB 3063653 A GB3063653 A GB 3063653A GB 3063653 A GB3063653 A GB 3063653A GB 798358 A GB798358 A GB 798358A
- Authority
- GB
- United Kingdom
- Prior art keywords
- core
- metal
- passages
- cast
- blade
- 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
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D15/00—Casting using a mould or core of which a part significant to the process is of high thermal conductivity, e.g. chill casting; Moulds or accessories specially adapted therefor
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
Abstract
798,358. Casting composite articles. BRISTOL AERO ENGINES, Ltd. Nov. 1, 1954 [Nov. 5, 1953], No. 30636/53. Class 83 (1). A group of internal passages in a casting are produced by a metal-core composed of two sheet-metal parts, each constituting one part of the wall of each of the passages of the group, and a flange part on each side of and running the whole length of each wall part, and said sheetmetal parts being joined together with the flange parts of one overlying the flange parts of the other to form the core. A segment of nozzle-guide blading for a gas-turbine, Figs. 1 and 2, is made by the lost-wax process, stainless steel cores 23, 24, which may be chromiumplated, being supported in the mould, and cobalt-base-alloy being cast at a temperature of 1500-1550‹ C. Refractory plugs may be inserted in the core-passages to prevent collapse. Alternatively, the segment may be cast from nickel-chrome alloys at a a temperature of 1550-1600‹ C., the cores then being cooled by air flowing through pipe 15 and outlets 12. Alternatively molten-metal such as lead, aluminium, copper or brass may be passed through the core, or heat-absorbing plugs placed in the core-passages. The cooling may be so regulated that an outer superficial layer of the core is fused to assist bonding with the cast-metal, or the core may be coated with a metal such as copper which will melt and promote bonding, or a flux. In a modification for making a blade, a mild-steel core is supported between the halves of a shell-mould. The core is made from two sheet-metal portions to form a manifold passage system comprising a header 27 in the root-portion 40 of the blade, Figs. 6 and 7, and passages 30-33 through the portion 41 of the blade. Cast-metal keys into holes in the portions 37 of the core between the passages The cores may have a varying cross-section throughout their length. To prevent chilling of the cast-metal, e.g. aluminium alloy, a removable plug comprising an electric heating element may be inserted in each core-passage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3063653A GB798358A (en) | 1953-11-05 | 1953-11-05 | Improvements in or relating to the production of castings with internal passages |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3063653A GB798358A (en) | 1953-11-05 | 1953-11-05 | Improvements in or relating to the production of castings with internal passages |
Publications (1)
Publication Number | Publication Date |
---|---|
GB798358A true GB798358A (en) | 1958-07-16 |
Family
ID=10310731
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3063653A Expired GB798358A (en) | 1953-11-05 | 1953-11-05 | Improvements in or relating to the production of castings with internal passages |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB798358A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2261394A (en) * | 1991-10-15 | 1993-05-19 | Thyssen Guss Ag | Method of producing cast parts with channels |
CN112872311A (en) * | 2021-01-13 | 2021-06-01 | 西安航天发动机有限公司 | Design method of investment precision casting chill |
-
1953
- 1953-11-05 GB GB3063653A patent/GB798358A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2261394A (en) * | 1991-10-15 | 1993-05-19 | Thyssen Guss Ag | Method of producing cast parts with channels |
CN112872311A (en) * | 2021-01-13 | 2021-06-01 | 西安航天发动机有限公司 | Design method of investment precision casting chill |
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