GB1434848A - Method fo hydrostatic extrusion - Google Patents
Method fo hydrostatic extrusionInfo
- Publication number
- GB1434848A GB1434848A GB4307173A GB4307173A GB1434848A GB 1434848 A GB1434848 A GB 1434848A GB 4307173 A GB4307173 A GB 4307173A GB 4307173 A GB4307173 A GB 4307173A GB 1434848 A GB1434848 A GB 1434848A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cavity
- billet
- die
- extrusion
- hydrostatic
- 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
- 238000000034 method Methods 0.000 title abstract 5
- 238000000886 hydrostatic extrusion Methods 0.000 title abstract 3
- 238000001125 extrusion Methods 0.000 abstract 3
- 239000012530 fluid Substances 0.000 abstract 2
- 239000000463 material Substances 0.000 abstract 2
- 230000002706 hydrostatic effect Effects 0.000 abstract 1
- 238000002955 isolation Methods 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 229920003023 plastic Polymers 0.000 abstract 1
- 239000004033 plastic Substances 0.000 abstract 1
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 Of Metal (AREA)
Abstract
1434848 Extruding ALLMANNA SVENSKA ELEKTRISKA AB 13 Sept 1973 [14 Sept 1972] 43071/73 Heading B3P In a method of hydrostatic extrusion a billet 8 is used which has a cavity 11 at its rear end, the cavity being filled with hydrostatic extrusion fluid or other material and near the end of the extrusion process being isolated from the extrusion chamber. The isolation of the cavity as the billet rear part enters the die 3 causes a pressure build up in the cavity which expands axially of the billet, Fig. 8. In the die orifice the pressure may sever the billet from its rear part, Fig. 10. The cavity may be defined by a radial hole 11 or the billet may have several cavities each defined by a radial hole which may meet each other, Fig. 3 (not shown). Alternatively the cavity may be defined by an annular groove (21), Figs. 4 and 5 (not shown). The pressure of the hydrostatic fluid drops when the cavity reaches the die and this drop may be detected and used to control the extrusion process. When the cavity is exposed downstream of the die a bang is produced which may also be used for control. The cavity may be filled with material which has a smaller deformation resistance than the billet. Plugs of plastics or metal may be used for the holes 11. The process can be used for tubular billets, Figs. 12-15 (not shown).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7211872A SE383269B (en) | 1972-09-14 | 1972-09-14 | HYDROSTATIC EXTENSION PROCEDURE |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1434848A true GB1434848A (en) | 1976-05-05 |
Family
ID=20294758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4307173A Expired GB1434848A (en) | 1972-09-14 | 1973-09-13 | Method fo hydrostatic extrusion |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3851511A (en) |
| JP (1) | JPS4967862A (en) |
| GB (1) | GB1434848A (en) |
| SE (1) | SE383269B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5916616A (en) * | 1995-08-11 | 1999-06-29 | Nakano Vinegar Co., Ltd. | Process for producing starch noodles by extrusion |
| US9700925B2 (en) * | 2015-11-04 | 2017-07-11 | Vahid Shatermashhadi | System and method for hydrostatic backward extrusion |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3344507A (en) * | 1962-12-19 | 1967-10-03 | Atomic Energy Authority Uk | Hydrostatic extrusion of sheathed ceramic nuclear fuel material |
| SE327180B (en) * | 1968-03-15 | 1970-08-17 | Asea Ab | |
| SE326932B (en) * | 1968-07-02 | 1970-08-10 | Asea Ab | |
| SE365959B (en) * | 1971-03-30 | 1974-04-08 | Asea Ab |
-
1972
- 1972-09-14 SE SE7211872A patent/SE383269B/en unknown
-
1973
- 1973-09-11 JP JP48102570A patent/JPS4967862A/ja active Pending
- 1973-09-13 GB GB4307173A patent/GB1434848A/en not_active Expired
- 1973-09-14 US US00397303A patent/US3851511A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4967862A (en) | 1974-07-01 |
| SE383269B (en) | 1976-03-08 |
| US3851511A (en) | 1974-12-03 |
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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 |