WO2003006188A2 - Verfahren zum strangpressen eines profils od. dgl. stranges aus einem bolzen oder barren sowie vorrichtung dafür - Google Patents
Verfahren zum strangpressen eines profils od. dgl. stranges aus einem bolzen oder barren sowie vorrichtung dafür Download PDFInfo
- Publication number
- WO2003006188A2 WO2003006188A2 PCT/EP2002/007744 EP0207744W WO03006188A2 WO 2003006188 A2 WO2003006188 A2 WO 2003006188A2 EP 0207744 W EP0207744 W EP 0207744W WO 03006188 A2 WO03006188 A2 WO 03006188A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- recipient
- bar
- pressing
- shear
- press
- Prior art date
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
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
- B21C33/006—Consecutive billets, e.g. billet profiles allowing air expulsion or bonding of billets
-
- 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
-
- 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
- B21C23/08—Making wire, bars, tubes
-
- 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
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/212—Details
-
- 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
- B21C26/00—Rams or plungers; Discs therefor
-
- 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
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
-
- 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
-
- 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
- B21C35/00—Removing work or waste from extruding presses; Drawing-off extruded work; Cleaning dies, ducts, containers, or mandrels
- B21C35/04—Cutting-off or removing waste
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D23/00—Machines or devices for shearing or cutting profiled stock
Definitions
- the invention relates to a method for extruding a profile or the like. Extrusion from a bolt or bar,
- IG which is guided in a recipient bore of a recipient or pickup and is pressed by means of a press ram in the pressing direction through a shaping cross section of a molding tool.
- the ingot is preferred with its end face before entering the shaping cross section
- the invention encompasses a device which is particularly suitable for this purpose and has a shaping tool which is axially movable relative to the pickup and is adjustable and fixable at a distance therefrom.
- the material that has become ductile is heated by a stamp - in the metal area, for example made of non-ferrous, sintered metals or steel, but in particular made of an aluminum alloy - by a stamp - or in the case of hydrostatic extrusion by means of a liquid one or more 3G cross-sections of a molding tool crossing the pressing direction.
- a stamp - in the metal area for example made of non-ferrous, sintered metals or steel, but in particular made of an aluminum alloy - by a stamp - or in the case of hydrostatic extrusion by means of a liquid one or more 3G cross-sections of a molding tool crossing the pressing direction.
- the punch moves towards the shape of the profile in the direction of the profile that emerges.
- indirect or reverse extrusion the material is pressed against the direction of the stamp by a tool which is fixed to the hollow stamp.
- a so-called pressing residue of the pressed ingot remains as a more or less disk-like structure between the two on the rear tool surface. This is usually removed by a shearing knife G which is moved radially on the tool before the subsequent ingot - moved by the punch which has now moved back in the receiver - strikes that tool surface and the actual molding process can be continued.
- S Metal bars especially those made of aluminum alloys, are coated with impurities - for example lubricant residues - and with an oxide layer.
- the oxide particles on the forehead have proven to be extremely harmful to the structure of the resulting profile;
- G the resulting zone with contaminating inclusions - also known as a transverse press seam - is relatively long depending on the profile shape and pressing speed and, with increasing quality requirements, forces longer and longer sections of the profile to fall out of the resulting strand with all of them resulting consequences of decreasing economy with shrinking profile output; If the new ingot is pressed, that Q transverse press seam is created between it and the metal that remains in the tool inlet. This can be found in the form of an incline in the extruded profile strand.
- the quality of the transverse press seam depends on the tool design and the "clean" mode of operation during extrusion, but cannot be measured in the extruded profile without destroying it. For this reason, profiles that are mechanically stressed are more or less long cross-seam section cut out of the extruded profile strand.
- DE 196 05 885 Cl proposed the applicant before the front ingot end entered the mold cross section to push this ingot out of the transducer in the Q pressing direction by a small amount of cantilever, to shear off and remove a resulting disc-like section of that free ingot end and then to bring the latter to S at the cross section of the shape or the rear end of the previously pressed bolt.
- Removing this front section also removes its oxide skin or the like, so that - assuming that the almost virgin ingot forehead hits the tool quickly - contamination by oxide particles of this ingot end is reduced G as well as the formation of longer waste sections in a profile strand if possible disregard injury.
- the bar end In order to reduce the time between shearing and the start of further pressing, the bar end should be removed approximately at the same time as the usual shearing off of the rest of the press from the tool.
- the transducer is to be moved axially away from this at the end of a pressing process; If their neighboring end faces are fixed to each other, the shearing process for the press residue and ingots can begin.
- the two sheared surfaces are put together after just over ten seconds during the pressing process. This means that the shear surfaces oxidize minimally, and largely virgin material surfaces are combined in the cross-press seam as a prerequisite for creating good cross-press seams.
- the device for carrying out this method which is presented in the above-mentioned DE 196 05 885 C1, offers a shear knife with two shaving blades which run at a distance from one another and are simultaneously guided in a radial movement path over the mouth of the recipient bore and the rear surface of the tool.
- the shaving surfaces have an undefined roughness, for example due to the increasing adherence of the smallest aluminum residues on the shaving knife.
- air can be trapped in the valleys of the grooves, which prevents young women from coming together and good welding can take place over the entire cross-seam contact surface.
- the inventor has set himself the goal of further improving the method described at the outset, including a device for it, and of eliminating the transverse press seam that arises between the two merged bar ends as a source of error.
- the displaced parts of the transverse press seam surface are removed approximately radially around the circumference before the ingot enters the molding tool; due to the build-up of pressure, at least one radial strand is to be formed from parts of the transverse press seam surface and
- ⁇ 5 is to be set and in which there is a welding or prechamber in the gap between the recipient or the receiver and the molding tool in the pressing direction, from which at least one opening or discharge channel extends approximately radially.
- 3G nals should be assigned to a shear blade that can be run over them.
- the welding or prechamber in a tubular housing and to preferably provide two approximately radial discharge channels on a common axis; this arrangement only requires a shear knife with two shear blades; the latter run parallel to each other in a U-shaped cross section of the Shear knife. At the end of the shearing process, the shear blade then spans the associated mouth, sealingly, during the entire subsequent pressing process.
- This device thus contains a type of cross-seam weld chamber - to be inserted between the die and the recipient or firmly attached to one of these two parts of the device - with lateral openings or discharge channels for cross-pressing.
- the side openings can be designed in any way in order to safely press the contaminated cross-seam surface from the area of the material to be pressed; If sufficient volume of pressed material is evidently squeezed out transversely, the strands emerging laterally are sheared off by the shearing knife during the pressing process and then the lateral openings or the mouths of the discharge channels of the transverse press seam prechamber are closed by this. Once this closing process has taken place and cross-pressing has stopped, the actual pressing process takes place with the exclusion of air. It is pressed in the transverse press seam pre-chamber until just before the lateral outlet openings.
- FIG. 7 shows a horizontal longitudinal section through an arrangement according to the invention of an extrusion press with a prechamber
- FIG. 8 shows a cross section through the arrangement of FIG. 7;
- An extrusion press not shown, for direct extrusion of profiles has, according to FIG. 1, a press ram 10 on a press cylinder which runs in the longitudinal axis A of a bore 16 penetrating a recipient or receiver 14.
- the diameter d of a press washer 12 on the free end face of the press ram 10 on the receiver side is slightly shorter than the free bore diameter, so that the press ram 10 can plunge into the so-called recipient bore 16.
- the free bore diameter mentioned can optionally be limited by the inner surface of a recipient sleeve which is inserted into the receiver 14 or its bore 16 and is neglected in the drawing; in this case the interior of this recipient can is referred to as recipient bore 16.
- the maximum distance between a die-side recipient front 18 and the press disk 12 in the rest position (not shown) of the press die 10 is dimensioned such that the recipient bore 16 has a bolt or bar made of light metal, in particular of a preheated aluminum alloy, indicated at 30, and from Press ram 10 can be inserted into this recipient bore 16 in the pressing direction x.
- this shaping or its surface 23 can also have a different shape in further configurations. This also applies to a molding on the rear recipient front 18; in the drawing, the recipient bore 16 surrounds an annular collar 26 - there directly adjoining its edge 17.
- an axially multi-part die 38 as a molding tool with a flat mold cavity 42 - the S depth b and an outline corresponding, for example, to the recipient bore 16 - as a shaping tool - as well as with a discharge channel 44 running in the pressing direction x, through which a strand 50 which is created in a shape cross section 46 of the die 38 is pushed out.
- the outline of the mold trough 42 which receives a disk-like shaped piece 52 connected to the strand G 50, is selected such that it covers all inlets of the tool 38 which run in the pressing direction x and are not shown in the drawing for reasons of clarity. 5
- a lifting device 54 for a shear knife 56 can be seen on the recipient face 20 in FIG. 1, which is provided to be movable radially to a gap G between the sensor 14 and the die 38, determined by the distance n.
- the bolt or ingot 30 is printed by the molding tool 38 and thus the strand 50 starting from the disk-like molding 52 is produced; 5 the molding 52 forms in the mold cavity 42 of the die 38 described above and is in one piece with a pressing residue 60 of thickness e protruding from the tool surface 40 against the pressing direction x; this arises during the pressing process in the stamp-free front end area of the recipient bore 16 when the transducer 14 is moved back against the pressing direction x.
- the surface 23 of the molded ring 22 on the recipient face 20 then stands as a stop face parallel to this at that distance n from the tool face 40. In this position, the receptacles 14 and 5 die 38 are temporarily fixed in order to enable a subsequent shearing process.
- a new block or ingot 30 is placed in front of the pressing residue 60, and the surfaces of the block or ingot 30 and the pressing residue 60 to be assigned to one another are sheared off in order to improve the goodness of the strand 50 in their area.
- a so-called transverse press seam is formed between the metal remaining in the tool 38 inlet and the new ingot 30.
- shear knife 56 which are supplemented by a shear knife 56, brought to a high temperature and designed to achieve a desired shear shape, during the shearing process over a heating time to be selected which the shear knife 56 contacts the cross-press seam surface, can be heated.
- the resulting shear surfaces 36 and 62 can then be joined together after only 10 to 15 seconds.
- the air should laterally move outwards and / or along the bolt surface after the pairing of the shear surface pairings in the subsequent pressure build-up displaced towards the press disk 12 and at the same time the minimally oxidized or contaminated surface for the transverse press seam is torn open.
- a closed shear surface 62 aligned with the tool surface 40 must be created, which is achieved by appropriately designed material entry openings in the die 38 and a suitable shear knife geometry.
- a suitable shear knife geometry In order to give that air the possibility of a lateral exit, not recognizable grooves are attached to the recipient end 20 in the drawing, through which the air can be removed - but no material to be pressed can escape.
- the treatment of the surfaces mentioned which form the transverse press seam may consist in a special shape of the mutually facing shear surfaces;
- the shear surface 36 a according to FIG. 5 is designed approximately in the form of a gable roof with a radially horizontal ridge 35, the shear surface 36 b in FIG. 6 in longitudinal section as a flat partial ellipse.
- the state shown here already relates to a first pressing step in which pressure has been built up; A circumferential ring edge 37 is then created by radial outflows of the metal.
- the extrusion press can be self-cleaned after each press cycle by ejecting the press residue 60 and the subsequent press rest shear process, and the addition of contamination processes can be avoided.
- the air enclosed in the upsetting process connecting the axially opposing shear surfaces 36, 36 a , 36 b and 62 must - as already mentioned - preferably be able to escape radially, but possibly also between the surface of the ingot 30 and the recipient bore 16 to the press disk 12 out.
- the bolt 30 is heated up with a temperature profile in such a way that the bolt rear surface 33 clinging to the pressure plate 12 is colder than the bolt end 34 facing the die or the tool 38.
- air outlet grooves may be attached, as a single one is only indicated at 11 in FIG. 4.
- a piece of pipe 68 is inserted as a housing for a welding or prechamber 70 of diameter i of about 560 mm between the transducer 14 and the die 38, in which the end face 34 a of the bolt 30 approached to the rear face 33 a of the before him deformed bolt 30 a arrives.
- the rear surface 33 a and the end surface 34 a can optionally also be referred to here as shear surfaces if they should - in special cases - be the result of a shearing process.
- radial openings or discharge channels 72 are provided in the pipe section or housing 68, the common axis Q of which in the exemplary embodiment shown is the longitudinal axis A of the recipient bore 16 crosses horizontally. Thanks to these side openings 72, the contaminated cross-pressing seam surface from the area of the pressed material is pressed out as a transverse extrusion 31 in the direction of the y.
- the actual pressing process runs in the absence of air.
- the bolt 30 a is pressed out until its bolt rear surface 33 according to FIG. 7 is immediately in front of the lateral openings 72.
- the press ram 10 with its fixed press disk 12 and the venting options indicated in FIG. 4 are withdrawn and the new bolt 30 is loaded for the following pressing process, without any residual press;
- the remaining m of the welding or pre-chamber 70 is pressed with parts from the end face 34 a of the new bolt 30, the contaminated transverse press seam surface, from the welding of the pre-chamber 70 - as described -.
- a billet-like press residue 31 a which is formed in this way - which in another embodiment can also be round in cross section - has, for example, a height h of 200 mm and a thickness q of 70 mm according to FIG. 9. These press residues 31 a can be fed to a remelting shop, for example.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Forging (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/483,344 US20040231391A1 (en) | 2001-07-11 | 2002-07-11 | Method for extruding a profile or a similar billet from a bolt or bar and corresponding device |
EP02764677A EP1409171A2 (de) | 2001-07-11 | 2002-07-11 | Verfahren zum strangpressen eines profils od. dgl. stranges aus einem bolzen oder barren sowie vorrichtung dafür |
CA002453258A CA2453258A1 (en) | 2001-07-11 | 2002-07-11 | Method for extruding a profile or a similar billet from a bolt or bar and corresponding device |
AU2002328882A AU2002328882A1 (en) | 2001-07-11 | 2002-07-11 | Method for extruding a profile or a similar billet from a bolt or bar and corresponding device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10133529.6 | 2001-07-11 | ||
DE10133529 | 2001-07-11 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2003006188A2 true WO2003006188A2 (de) | 2003-01-23 |
WO2003006188A3 WO2003006188A3 (de) | 2003-11-27 |
Family
ID=7691306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/007744 WO2003006188A2 (de) | 2001-07-11 | 2002-07-11 | Verfahren zum strangpressen eines profils od. dgl. stranges aus einem bolzen oder barren sowie vorrichtung dafür |
Country Status (6)
Country | Link |
---|---|
US (1) | US20040231391A1 (de) |
EP (1) | EP1409171A2 (de) |
AU (1) | AU2002328882A1 (de) |
CA (1) | CA2453258A1 (de) |
DE (2) | DE10141223C1 (de) |
WO (1) | WO2003006188A2 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009040071A1 (de) | 2009-09-04 | 2011-03-10 | Bl Chemie Gmbh & Co. Kg | Verfahren und Vorrichtung zum Herstellen von Pressbolzen |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7712651B2 (en) | 2008-01-04 | 2010-05-11 | G. James Australia Pty. Ltd. | Method of welding heated log segments in an aluminum extrusion process |
DE102008048576A1 (de) | 2008-09-23 | 2010-03-25 | Behr Gmbh & Co. Kg | Herstellungsverfahren, Strangpresse und Matrize für ein Strangpress-Hohlprofil sowie Strangpress-Hohlprofil und Wärmetauscher mit einem Strangpress-Hohlprofil |
JP5563947B2 (ja) * | 2010-10-04 | 2014-07-30 | 昭和電工株式会社 | 押出加工方法及び押出加工装置 |
CN103418631B (zh) * | 2013-08-19 | 2016-03-02 | 无锡源创机械科技有限公司 | 一种卧式挤压机内置式打压余机构 |
CN104772358B (zh) * | 2015-04-28 | 2017-03-29 | 哈尔滨理工大学 | 金属交替挤压成形装置及方法 |
CN107931497A (zh) * | 2017-11-27 | 2018-04-20 | 上海鸿基金属制品有限公司 | 组合固定杆的冷镦成型工艺 |
CN109500125A (zh) * | 2018-11-15 | 2019-03-22 | 佛山市南海华南锻造金属结构有限公司 | 一种带压余脱离机构的挤压机 |
CN109351794A (zh) * | 2018-12-11 | 2019-02-19 | 湖南千源铝业有限公司 | 一种用于铝合金型材的挤压成型装置 |
RU2744402C1 (ru) * | 2020-06-02 | 2021-03-09 | Федеральное государственное бюджетное образовательное учреждение высшего образования Балтийский государственный технический университет "ВОЕНМЕХ" им. Д.Ф. Устинова (БГТУ "ВОЕНМЕХ") | Способ изготовления заготовки стального сердечника для бронебойно-зажигательной пули |
CN112605144B (zh) * | 2020-11-20 | 2022-02-15 | 顺德职业技术学院 | 一种铝合金家具铝材生产加工用快速压合装置 |
CN113059013B (zh) * | 2021-02-07 | 2022-09-20 | 江苏伟业铝材有限公司 | 一种具有自动输送料结构的铝材挤压机及其使用方法 |
CN113145607B (zh) * | 2021-03-05 | 2023-02-03 | 衡阳和富铜业有限公司 | 一种用于废铜利用的回收装置 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1720722A (en) * | 1927-11-26 | 1929-07-16 | Western Electric Co | Slug for use in extrusion operations and method of extrusion |
GB655652A (en) * | 1948-12-31 | 1951-07-25 | Dow Chemical Co | Improved method of producing continuous extruded metal articles |
GB2033813A (en) * | 1978-11-14 | 1980-05-29 | Franco Belgedes Laminoirs Et T | Pressure welding wedged metal bars |
DE19605885C1 (de) * | 1996-02-05 | 1997-08-21 | Alusuisse Lonza Services Ag | Verfahren zum Strangpressen eines Profils od. dgl. Körpers aus einem Barren, sowie Verwendung des Verfahrens |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2782919A (en) * | 1951-07-04 | 1957-02-26 | Loewy Eng Co Ltd | Tool supporting means in billet extrusion presses |
US2964177A (en) * | 1959-07-02 | 1960-12-13 | Albert W Scribner | Continuous extrusion |
US3369385A (en) * | 1965-07-07 | 1968-02-20 | Reynolds Metals Co | Metal extrusion apparatus |
-
2001
- 2001-08-23 DE DE10141223A patent/DE10141223C1/de not_active Expired - Fee Related
-
2002
- 2002-07-11 WO PCT/EP2002/007744 patent/WO2003006188A2/de not_active Application Discontinuation
- 2002-07-11 DE DE10232608A patent/DE10232608B4/de not_active Expired - Fee Related
- 2002-07-11 US US10/483,344 patent/US20040231391A1/en not_active Abandoned
- 2002-07-11 EP EP02764677A patent/EP1409171A2/de not_active Withdrawn
- 2002-07-11 AU AU2002328882A patent/AU2002328882A1/en not_active Abandoned
- 2002-07-11 CA CA002453258A patent/CA2453258A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1720722A (en) * | 1927-11-26 | 1929-07-16 | Western Electric Co | Slug for use in extrusion operations and method of extrusion |
GB655652A (en) * | 1948-12-31 | 1951-07-25 | Dow Chemical Co | Improved method of producing continuous extruded metal articles |
GB2033813A (en) * | 1978-11-14 | 1980-05-29 | Franco Belgedes Laminoirs Et T | Pressure welding wedged metal bars |
DE19605885C1 (de) * | 1996-02-05 | 1997-08-21 | Alusuisse Lonza Services Ag | Verfahren zum Strangpressen eines Profils od. dgl. Körpers aus einem Barren, sowie Verwendung des Verfahrens |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009040071A1 (de) | 2009-09-04 | 2011-03-10 | Bl Chemie Gmbh & Co. Kg | Verfahren und Vorrichtung zum Herstellen von Pressbolzen |
Also Published As
Publication number | Publication date |
---|---|
US20040231391A1 (en) | 2004-11-25 |
EP1409171A2 (de) | 2004-04-21 |
DE10141223C1 (de) | 2002-11-21 |
CA2453258A1 (en) | 2003-01-23 |
DE10232608A1 (de) | 2003-01-23 |
DE10232608B4 (de) | 2004-04-15 |
WO2003006188A3 (de) | 2003-11-27 |
AU2002328882A1 (en) | 2003-01-29 |
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