GB1240154A - Hydrostatic extrusion of compound material - Google Patents
Hydrostatic extrusion of compound materialInfo
- Publication number
- GB1240154A GB1240154A GB4578368A GB4578368A GB1240154A GB 1240154 A GB1240154 A GB 1240154A GB 4578368 A GB4578368 A GB 4578368A GB 4578368 A GB4578368 A GB 4578368A GB 1240154 A GB1240154 A GB 1240154A
- Authority
- GB
- United Kingdom
- Prior art keywords
- casing
- core
- billet
- cylinder
- plate
- 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
- B21C23/22—Making metal-coated products; Making products from two or more metals
-
- 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
- B21C23/007—Hydrostatic extrusion
-
- 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
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
- B21C33/002—Encapsulated billet
-
- 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
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
- B21C33/004—Composite billet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Extrusion Of Metal (AREA)
- Wire Processing (AREA)
Abstract
1,240,154. Extruding; jointing by stamping; making wire; making bus-bars. ALLM€NNA SVENSKA ELEKTRISKA AB. 26 Sept., 1968 [27 Sept., 1967; 15 March, 1968], No. 45783/68. Headings B3A, B3P and B3Q. A billet for hydrostatic extrusion into a sheathed wire comprises a core 12 of one material and a casing 13 of another material which are combined so that axial forces arising from the different resistances of the materials are transferred between the core and casing. The core is preferably aluminium or an aluminium alloy and the casing copper or copper alloy. The core must be sealed to the casing to prevent hydrostatic fluid, e.g. castor oil, entering therebetween. In one embodiment, Fig. 3, an annular groove 14 with a sealing ring 15 is used. A second groove 16 is also provided and the casing forced into the groove by isostatic pressure either in the extrusion pressure chamber or in a separate chamber or by rolling. Alternatively, the end of the billet is sealed by an elastomeric plate (19), Fig. 4 (not shown), with a flange which tightly fits around the casing or a steel plate may be welded or soldered to the casing. In a further embodiment, Fig. 5 (not shown), the core is recessed relative to the casing and an elastomeric plate (21) resiliently held against the core. The plate 23 may be metal, Fig. 6, and welded or soldered to the casing. In a further embodiment, Fig. 7 (not shown), an L- cross-section sealing ring (26) of elastomeric materials seals the billet. In a further embodiment, Figs. 8 (not shown), a plug (31) with a sealing ring (29) is used. The plug or the core is recessed to define a groove for the casing to be pressed into. The rear face of the core may be recessed, Fig. 9, to receive a complementary projection 40 on the plug 36. All the cores of the above embodiments may have either annular locking grooves or one or more helical locking grooves. The casing is preferably tapered at the forward end, Fig. 4 (not shown), and preferably extends over the conical tip 60. After extrusion the portion of the billet left in the die can be used as the tip of the next billet. The casing 13a, Fig. 6, of the new billet is welded or soldered to the old casing 13b and the new core 12a pressed into its casing to contact the old core 12b. The mating surfaces of the cores may be shaped to co-operate, Fig. 9, or a peg 43 of core material is used. The peg may be threaded, Fig. 7 (not shown), or be double frusto-conical, Fig. 8 (not shown). The casing and the core must be cleaned, for example by pickling in hydrochloric acid, before assembly. The core and casing may also be sandblasted. It is preferable to anneal the remaining portion of the old billet before jointing to soften the copper casing. In an alternative form of billet, Figs. 10 and 11 (not shown), a rigid end plate (61, (62) is used to combine the core and casing and the joint between the plate and casing sealed by an elastomeric ring (64) or plate (66). Any of the billet end constructions of the earlier embodiments can be combined with this sealing. arrangement. A hydrostatic press for producing copper clad aluminium wire comprises an operating cylinder 50, Fig. 12, and a high pressure cylinder 3. The high pressure cylinder comprises a steel cylinder (4), Fig. 2 (not shown), with a sheath (5) of high tensile tape to pre-stress the cylinder. The billet 11 and die 10 are inserted into the press and the cylinder moved rightwards. Hydraulic fluid is pumped into the space 55 to move the billet supporting piston 54 to the right. The piston is freely movable in the cylinder 3 and has a built-in overflow valve through which the fluid flows with a pressure drop. After extrusion the wire may be drawn or rolled into flat bus-bars.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE13258/67A SE318540B (en) | 1967-09-27 | 1967-09-27 | |
SE03513/68A SE327180B (en) | 1968-03-15 | 1968-03-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1240154A true GB1240154A (en) | 1971-07-21 |
Family
ID=26654456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4578368A Expired GB1240154A (en) | 1967-09-27 | 1968-09-26 | Hydrostatic extrusion of compound material |
Country Status (11)
Country | Link |
---|---|
BE (1) | BE720914A (en) |
CH (1) | CH509113A (en) |
DE (1) | DE1777197C3 (en) |
DK (1) | DK136517B (en) |
ES (1) | ES358562A1 (en) |
FI (1) | FI52530C (en) |
FR (1) | FR1585274A (en) |
GB (1) | GB1240154A (en) |
IE (1) | IE32383B1 (en) |
NL (1) | NL154437B (en) |
NO (1) | NO128142B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE350711B (en) * | 1971-02-10 | 1972-11-06 | Asea Ab | |
CN109304378A (en) * | 2018-11-21 | 2019-02-05 | 中国重型机械研究院股份公司 | A kind of device of 1800MPa fluid pressure |
-
1968
- 1968-09-16 FR FR1585274D patent/FR1585274A/fr not_active Expired
- 1968-09-16 BE BE720914D patent/BE720914A/xx unknown
- 1968-09-17 NL NL6813287A patent/NL154437B/en not_active IP Right Cessation
- 1968-09-20 CH CH1427968A patent/CH509113A/en not_active IP Right Cessation
- 1968-09-23 DE DE19681777197 patent/DE1777197C3/en not_active Expired
- 1968-09-24 NO NO378268A patent/NO128142B/no unknown
- 1968-09-25 IE IE115168A patent/IE32383B1/en unknown
- 1968-09-26 ES ES358562A patent/ES358562A1/en not_active Expired
- 1968-09-26 GB GB4578368A patent/GB1240154A/en not_active Expired
- 1968-09-27 FI FI274968A patent/FI52530C/en active
-
1972
- 1972-07-26 DK DK369972A patent/DK136517B/en unknown
Also Published As
Publication number | Publication date |
---|---|
NL154437B (en) | 1977-09-15 |
DE1777197A1 (en) | 1971-09-09 |
IE32383L (en) | 1969-03-27 |
FI52530B (en) | 1977-06-30 |
CH509113A (en) | 1971-06-30 |
NO128142B (en) | 1973-10-08 |
NL6813287A (en) | 1969-03-31 |
DK136517B (en) | 1977-10-24 |
FI52530C (en) | 1977-10-10 |
IE32383B1 (en) | 1973-07-11 |
DE1777197B2 (en) | 1979-07-26 |
DE1777197C3 (en) | 1980-03-27 |
BE720914A (en) | 1969-03-03 |
ES358562A1 (en) | 1970-04-16 |
FR1585274A (en) | 1970-01-16 |
DK136517C (en) | 1978-03-20 |
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