GB833523A - Manufacture by extrusion of turbine engine blades - Google Patents
Manufacture by extrusion of turbine engine bladesInfo
- Publication number
- GB833523A GB833523A GB123157A GB123157A GB833523A GB 833523 A GB833523 A GB 833523A GB 123157 A GB123157 A GB 123157A GB 123157 A GB123157 A GB 123157A GB 833523 A GB833523 A GB 833523A
- Authority
- GB
- United Kingdom
- Prior art keywords
- billet
- holes
- extrusion
- blade portion
- filler
- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/14—Making other products
- B21C23/16—Making turbo blades or propellers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
833,523. Making turbine blades; extruding. ROLLS-ROYCE Ltd. Jan. 10, 1958 [Jan. 11, 1957], No. 1231/57. Classes 83 (2) and 83 (4). A method of making a turbine blade from heat-resistant metal comprises providing a billet 10, Fig. 2, with a plurality of drilled holes 11 and inserting a filler therein, partially extruding the billet through a die 12, 13 to form a blade portion of approximately aerofoil shape and to leave an unextruded shroud portion 15, Fig. 7, the holes being thereby deformed into elongated or lenticular cross-section, Fig. 7A (not shown), machining the blade portion and root portion to final shape, machining a tip shroud 19, Fig. 7, from the unextruded portion 15, and removing the filler at any stage subsequent to the extrusion. The billet of nickelchrome alloy, is of substantially rectangular cross-section, Fig. 2A (not shown), and has axial or inclined blind holes filled with mild steel rods located by welding. The billet is then coated with nickel and after heating is extruded through a split die.12, 13, Fig. 3B, coated with colloidal graphite as described in Specification 828,339. The blade portion may be twisted during or after extrusion. For forming an oblique tip shroud, the base of the billet and the corresponding surface of the extrusion die are inclined. Side pieces 23, Fig. 8, are then welded to the extruded portion to provide material for the platform 22 which is machined together with a root shank 21 and fir-tree fixing 20. Holes 24 are drilled in the root to connect with the holes in the blade portion. The filler rods are removed by nitric acid to which is added a wetting agent as described in Specification 833,522. Specification 826,498 also is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB123157A GB833523A (en) | 1957-01-11 | 1957-01-11 | Manufacture by extrusion of turbine engine blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB123157A GB833523A (en) | 1957-01-11 | 1957-01-11 | Manufacture by extrusion of turbine engine blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB833523A true GB833523A (en) | 1960-04-27 |
Family
ID=9718398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB123157A Expired GB833523A (en) | 1957-01-11 | 1957-01-11 | Manufacture by extrusion of turbine engine blades |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB833523A (en) |
-
1957
- 1957-01-11 GB GB123157A patent/GB833523A/en not_active Expired
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