GB1215452A - Improvements in or relating to hydrostatic extrusion apparatus - Google Patents
Improvements in or relating to hydrostatic extrusion apparatusInfo
- Publication number
- GB1215452A GB1215452A GB5149/67A GB514967A GB1215452A GB 1215452 A GB1215452 A GB 1215452A GB 5149/67 A GB5149/67 A GB 5149/67A GB 514967 A GB514967 A GB 514967A GB 1215452 A GB1215452 A GB 1215452A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ram
- extrusion
- plunger
- chamber
- billet
- 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
- B21C23/007—Hydrostatic extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Extrusion Of Metal (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
1,215,452. Hydrostatic extrusion. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 24 Jan., 1968 [2 Feb., 1967], No. 5149/67. Heading B3P. A hydrostatic extrusion apparatus has means for bleeding high-pressure liquid from the eextrusion chamber 1, comprising a leak path 23 formed between two contacting members 20, 22 which are loaded to provide a controllable pressure between the contacting surfaces. Member 20 is the extrusion plunger actuated by a main ram 5 and passing through a bleed ring 22 which has a conical surface 24 and is compressed axially by hydraulic pressure in a secondary cylinder 3. This causes radial contraction of the ring 22 on to the plunger 20. Ram 5 is carried by an axially movable crosshead 10 containing a cylinder 8 for a main actuating ram 13. For extruding a billet 29 through die 16, ram 13 is moved to the left to pressurize liquid 30 in cylinders 8, 3 and move the ram 5. Movement of the crosshead 10 and ram 5 is initially restrained by cylinder 14 until the plunger has built up hydrostatic pressure in chamber 1. The crosshead 10 is then released whereby plunger 20 moves into engagement with the billet which is thus extruded by combined hydrostatic and direct pressure. During extrusion liquid is bled along path 23 into cylinder 3. In another embodiment, Fig. 2 (not shown), the extrusion chamber 1 is formed by segments (31) and has a liner (32) whose rear end (34) is contracted on to the plunger 20 to provide the bleed path. In a further embodiment, Fig. 3 (not shown), the bleed ring (42) surrounds the extrusion die 16. In another embodiment, Fig. 4a, the extrusion plunger 127 has an enlarged rear head 128 with an annular surface 131 contacting the end of the main ram 104. The bleed path is provided by duct 134, contacting surface 131, outer chamber 133, and passageway 135 leading to atmosphere. The extrusion chamber is formed by segments 113, Fig. 5 (not shown), having an inner liner 118 and an outer sleeve 116 which is pressurized during extrusion of the billet 137 by the liquid 138 in chamber 102 which is itself pressurized by forward movement of the ram 104. In a modification, Fig. 6 (not shown), a continuous billet (147) is used and passes through the ram 104. (For Figures see next page.)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5149/67A GB1215452A (en) | 1967-02-02 | 1967-02-02 | Improvements in or relating to hydrostatic extrusion apparatus |
US700190A US3513676A (en) | 1967-02-02 | 1968-01-24 | Hydrostatic extrusion apparatus |
DE19681652604 DE1652604A1 (en) | 1967-02-02 | 1968-02-01 | Hydrostatic extrusion device |
SE1355/68A SE345398B (en) | 1967-02-02 | 1968-02-01 | |
FR1560558D FR1560558A (en) | 1967-02-02 | 1968-02-01 | |
CH152768A CH480941A (en) | 1967-02-02 | 1968-02-01 | Device for the hydrostatic extrusion of tablets |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5149/67A GB1215452A (en) | 1967-02-02 | 1967-02-02 | Improvements in or relating to hydrostatic extrusion apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1215452A true GB1215452A (en) | 1970-12-09 |
Family
ID=9790618
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5149/67A Expired GB1215452A (en) | 1967-02-02 | 1967-02-02 | Improvements in or relating to hydrostatic extrusion apparatus |
Country Status (6)
Country | Link |
---|---|
US (1) | US3513676A (en) |
CH (1) | CH480941A (en) |
DE (1) | DE1652604A1 (en) |
FR (1) | FR1560558A (en) |
GB (1) | GB1215452A (en) |
SE (1) | SE345398B (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1162014A2 (en) * | 2000-06-09 | 2001-12-12 | Aida Engineering Ltd. | Pressure controlled fluid pressure extrusion method |
US7284405B2 (en) | 2000-06-09 | 2007-10-23 | Aida Engineering Co., Ltd. | Pressure controlled fluid pressure extrusion method |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE344287B (en) * | 1969-02-14 | 1972-04-10 | Asea Ab | |
GB1292641A (en) * | 1969-03-17 | 1972-10-11 | Atomic Energy Authority Uk | Improvements in pressure vessel assemblies |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2558035A (en) * | 1947-07-05 | 1951-06-26 | Percy W Bridgman | Method and apparatus for cold drawing |
GB1111351A (en) * | 1964-07-31 | 1968-04-24 | Atomic Energy Authority Uk | Improvements in or relating to hydrostatic extrusion processes |
US3364716A (en) * | 1965-07-07 | 1968-01-23 | Fielding & Platt Ltd | Extrusion apparatus |
US3383891A (en) * | 1965-10-20 | 1968-05-21 | Robert C. Geitz | Superhydraulic forging method and apparatus |
-
1967
- 1967-02-02 GB GB5149/67A patent/GB1215452A/en not_active Expired
-
1968
- 1968-01-24 US US700190A patent/US3513676A/en not_active Expired - Lifetime
- 1968-02-01 FR FR1560558D patent/FR1560558A/fr not_active Expired
- 1968-02-01 SE SE1355/68A patent/SE345398B/xx unknown
- 1968-02-01 DE DE19681652604 patent/DE1652604A1/en active Pending
- 1968-02-01 CH CH152768A patent/CH480941A/en not_active IP Right Cessation
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1162014A2 (en) * | 2000-06-09 | 2001-12-12 | Aida Engineering Ltd. | Pressure controlled fluid pressure extrusion method |
EP1162014A3 (en) * | 2000-06-09 | 2002-07-24 | Aida Engineering Ltd. | Pressure controlled fluid pressure extrusion method |
US7284405B2 (en) | 2000-06-09 | 2007-10-23 | Aida Engineering Co., Ltd. | Pressure controlled fluid pressure extrusion method |
Also Published As
Publication number | Publication date |
---|---|
DE1652604A1 (en) | 1971-04-01 |
US3513676A (en) | 1970-05-26 |
SE345398B (en) | 1972-05-29 |
CH480941A (en) | 1969-11-15 |
FR1560558A (en) | 1969-03-21 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PLNP | Patent lapsed through nonpayment of renewal fees |