WO1999038625A1 - Verfahren und vorrichtung zur hydrodynamischen ziehumformung von schichtverbunddraht mittels schmiermittelbeaufschlagten mehrfach-ziehanlagen - Google Patents
Verfahren und vorrichtung zur hydrodynamischen ziehumformung von schichtverbunddraht mittels schmiermittelbeaufschlagten mehrfach-ziehanlagen Download PDFInfo
- Publication number
- WO1999038625A1 WO1999038625A1 PCT/EP1999/000680 EP9900680W WO9938625A1 WO 1999038625 A1 WO1999038625 A1 WO 1999038625A1 EP 9900680 W EP9900680 W EP 9900680W WO 9938625 A1 WO9938625 A1 WO 9938625A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- lubricant
- pressure chamber
- die
- wire
- 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
- B21C3/00—Profiling tools for metal drawing; Combinations of dies and mandrels
- B21C3/02—Dies; Selection of material therefor; Cleaning thereof
- B21C3/12—Die holders; Rotating dies
- B21C3/14—Die holders combined with devices for guiding the drawing material or combined with devices for cooling heating, or lubricating
-
- 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
- B21C9/00—Cooling, heating or lubricating drawing material
Definitions
- the invention relates to a method and a device for hydrodynamic drawing forming of laminated wire by means of multiple drawing systems, which are acted upon by lubricant, according to the preamble of claim 1 and 4, respectively.
- WO 96/14946 proposed a method and a device for shaping or coating strand-like metallic material to be formed, solid, semisolid and liquid lubricants being used there, with which a lubricant layer is produced on the material to be formed.
- a pressure chamber which has a supply for lubricant.
- the lubricant is pressed onto the surface of the material to be formed, it being possible for several forming stages to be carried out without further intermediate coatings.
- the steel wire moved through the pressure chamber is coated with a homogeneous, thin and firmly adhering lubricant film at about 40 ° C. under a pressure of 150 MPa. This steel wire coated in this way is then guided to an outlet nozzle designed as a drawing die and is thereby characterizes that it should be possible to subject the steel wire to further forming without additional lubricant.
- the jacket material is stripped from the core and the material in the drawing die is eaten.
- the so-called hydrodynamic drawing reduces the drawing medium pressure after the system has been stopped.
- the drawing die will penetrate the remaining drawing agent layer due to the wire relaxation, so that when the tool is restarted, the wire material will stick to the tool surface, i.e. the drawing die starts with the already described disadvantageous consequences of feeding or a wire break.
- a pressure chamber is known from US Pat. No. 3,641,795, in which lubricant is introduced via a filling opening, which is initially closed on one side, and this is distributed and compressed using a so-called vibration wire. A further compression takes place by means of a hydraulic unit. After the so-called prepacking, a through hole is then made in the compressed lubricant, which is located inside the
- Composite wires with extremely hard core material as well as soft sheath material ensure safe start-up and restart of the Systems permitted without risk of wire breakage or reduced drawing quality.
- the basic idea of the invention is therefore to build up a lubricant or drawing medium pressure immediately before each drawing die of the corresponding drawing stage when starting or restarting the multiple drawing system, so that the material to be formed can pass through the drawing process with the desired success.
- the conditions for the pressure and temperature of the lubricant created for starting or restarting are maintained by known hydrodynamic effects in the interaction of the material to be formed, lubricant and drawing die, as well as released thermal energy during the forming and cooling of the drawing die.
- the method for drawing forming is as follows.
- each drawing stage is directly in front of the drawing die by means of a heated pressure chamber through which the laminated wire is passed, to the drawing and feeding stations
- Lubricant and the composite wire build up a hydrostatic starting pressure in the drawing gap, so that in particular the above-mentioned composite wires with a high-strength core and soft Jacket material can be formed with high quality.
- a laminated wire with a high-strength steel core and an aluminum sheath, the sheath content being 40 to 70% by volume could be reliably formed using the method according to the invention.
- care is taken during the continuous continuous drawing in a manner known per se by taking lubricant for hydrodynamic pressure conditions building up in the drawing gap.
- the starting pressure for each drawing stage is pre-set and monitored by a hydraulic control, whereby the preheating of the pressure chambers is also controlled by the control system.
- a selectable pressure / temperature range of all levels is reached, an enable signal is generated which triggers the start of the drawing process.
- each pressure chamber is continuously monitored, the external heating of the pressure chamber being able to be deactivated when the drawing dies start to heat up as a result of the drawing process.
- a starting or restart pressure in the range from 100 to 130 bar is set in the pressure chamber of each drawing stage.
- each drawing stage comprising at least one front and drawing die and a lubricant task known per se being arranged on the front die.
- the pressure chamber includes a wire through hole and a side lubricant channel to hold the amount of starting lubricant. Furthermore, one is preferably hydraulically operated
- Pressure generating device arranged on the pressure chamber so that the lubricant supplied to the lubricant channel with a predetermined by a further lubricant task Pressure can be pressed into the through hole or the corresponding pressure chamber space and in cooperation with the heating device provided in the pressure chamber, a pasty-pasty state of the lubricant is established.
- the desired lubricant pressure in the lubricant channel or in the pressure chamber space is maintained by a pressure tappet which is at least partially guided in the lateral lubricant channel and which can be actuated by a hydraulic cylinder.
- the movement or position of the tappet is detected with suitable sensors and is used to indirectly determine the pressure conditions in the pressure chamber.
- the pressure chamber is inserted between the front and drawing die of a conventional double brick arrangement and is small overall.
- the receptacles of the front and drawing die and the pressure chamber have fitting bores which run in the direction of drawing and which lead to appropriate fastening means, for example clamping bolts.
- the pressure chamber preferably has lateral bores or cutouts for receiving electrical heating elements and at least one temperature sensor in order to be able to monitor and set the defined temperature conditions when starting up or restarting the system in each drawing stage.
- a pressure / temperature control device monitors the pressure and temperature conditions of all pressure chambers of the drawing stages and releases the start and restart of the drawing system. Furthermore, a die cooling known per se can be controlled with this control device according to externally specifiable parameters.
- the pressure / temperature control device of the device according to the invention also serves for the continuous monitoring of the drawing process, since pressure drops in the pressure chamber indicate irregularities in the drawing process or the material being formed during the continuous operation of the drawing system.
- the invention therefore succeeds in a method and a device for the hydrodynamic drawing forming of composite wire by means of lubricant
- Lubricant is thus put in a dough-pasty state from the beginning, so that with the beginning of the drawing movement, such hydrodynamic conditions arise which then allow an adequate supply of lubricant in the drawing gap during the continuous, continuous drawing.
- continuous monitoring of the pressure and temperature in each pressure chamber checks when and to what extent, due to the onset of heating during the drawing process, an intended external heating system is to be deactivated.
- an intended external heating system is to be deactivated.
- Fig. La and lb j e a side view and a plan view of the drawing stage assembly, including Vorstein- and drawing die holder and pressure chamber, and
- Fig. 2 is a sectional view of the pressure chamber.
- the drawing stages 1 according to FIGS. 1 a and 1 b each comprise a roughing die holder 2, a pressure chamber 3 and a drawing die holder 4 with a drawing die, not shown.
- a lubricant boxes 5, known per se and shown with broken lines, is used to hold lubricant, which takes care of hydrodynamic pressure conditions in and around the drawing gap during the drawing process.
- the composite wire 6 to be reshaped now passes through the lubricant box 5, the Vorsteinaufnähme 2 in the pressure chamber 3 and then to the die in the die holder 4 to be subjected to the actual forming step by step.
- the pressure chamber 3 has a laterally arranged hydraulic cylinder 12 which, in cooperation with the elements shown in FIG. 2, forms a pressure generating device 9.
- Sensors 17 monitor the position of a pressure tappet, not shown in FIG. 1b, in order to indirectly detect the pressure conditions in the pressure chamber 3.
- a known die cooling 16 is provided on the die holder 4.
- the elements Vorsteinaufnähme 2, pressure chamber 3, drawing die holder 4 and pressure generating device 9 form a structural unit supported by a base plate 18.
- the structure of the pressure chamber will now be explained in more detail with reference to the sectional view according to FIG. 2.
- the pressure chamber 3 comprises a lateral lubricant channel 8, which leads to the wire through bore 7 of the pressure chamber 3.
- a funnel-like lubricant feed 11 is used to supply lubricant in the event that the drawing system is started or started or restarted.
- a pressure tappet 10 is located in the pressure generating device 9 and is actuated by the hydraulic cylinder 12, i.e. moved in the direction of the wire through hole 7 of the pressure chamber 3.
- the plunger 10 is at least partially guided in the lateral lubricant channel 8 and builds the pressure conditions in the pressure chamber, i.e. in the pressure chamber space of the wire through hole 7.
- the pressure chamber 3 has bores 13 for receiving preferably electrical heating elements and a bore 14, which is used to attach a temperature sensor.
- Fitting bores 15 are used to hold the tensioning screws, not shown, in order to ensure a firm, tight press connection between the pressure chamber 3 and the adjacent Vorsteinaufnähme 2 or drawing die holder 4.
- a pressure / temperature control device (not shown), in cooperation with the sensors 17 and the temperature sensor located in the bore 14, continuously records the pressure and temperature conditions of the pressure chambers of all drawing stages and releases the start and restart of the drawing system when predetermined values are reached.
- the control device mentioned is able to control a die cooling known per se.
- multilayered wires with a high-strength core but soft sheathing material can be reliably formed in multi-stage drawing systems, 10
- the pressure chambers to be provided in each drawing stage have an extremely simple construction and, in conjunction with known pre- and drawing die receptacles, can form a unit which only comprises a small amount of space, so that retrofitting in existing systems is possible without any problems.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Extraction Processes (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99907481A EP1053064B1 (de) | 1998-02-02 | 1999-02-02 | Verfahren und vorrichtung zur hydrodynamischen ziehumformung von schichtverbunddraht mittels schmiermittelbeaufschlagten mehrfach-ziehanlagen |
JP2000529908A JP3326499B2 (ja) | 1998-02-02 | 1999-02-02 | 積層複合線材のハイドロダイナミック伸線加工方法及び積層複合線材のハイドロダイナミック伸線加工用多段伸線機 |
DE59901393T DE59901393D1 (de) | 1998-02-02 | 1999-02-02 | Verfahren und vorrichtung zur hydrodynamischen ziehumformung von schichtverbunddraht mittels schmiermittelbeaufschlagten mehrfach-ziehanlagen |
CA002318831A CA2318831A1 (en) | 1998-02-02 | 1999-02-02 | Method and device for the deformation by hydrodynamic drawing of multi-layer composite wire by means of lubricant-supplied multiple drawing machines |
AT99907481T ATE217218T1 (de) | 1998-02-02 | 1999-02-02 | Verfahren und vorrichtung zur hydrodynamischen ziehumformung von schichtverbunddraht mittels schmiermittelbeaufschlagten mehrfach-ziehanlagen |
KR1020007008225A KR20010040434A (ko) | 1998-02-02 | 1999-02-02 | 윤활유-공급된 다단계 인발 장치에 의한 다층복합와이어의 유체역학적 인발 성형방법과 장치 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19804016 | 1998-02-02 | ||
DE19804016.4 | 1998-02-02 | ||
DE19810342A DE19810342C2 (de) | 1998-02-02 | 1998-03-10 | Verfahren zur hydrodynamischen Ziehumformung von Schichtverbunddraht sowie Mehrfach-Ziehanlage |
DE19810342.5 | 1998-03-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1999038625A1 true WO1999038625A1 (de) | 1999-08-05 |
Family
ID=26043534
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/000680 WO1999038625A1 (de) | 1998-02-02 | 1999-02-02 | Verfahren und vorrichtung zur hydrodynamischen ziehumformung von schichtverbunddraht mittels schmiermittelbeaufschlagten mehrfach-ziehanlagen |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1053064B1 (de) |
JP (1) | JP3326499B2 (de) |
AT (1) | ATE217218T1 (de) |
CA (1) | CA2318831A1 (de) |
WO (1) | WO1999038625A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116984404B (zh) * | 2023-07-28 | 2024-04-26 | 浙江创特新材科技有限公司 | 可移动的多段细钨丝加热模块及高强度细钨丝拉丝设备 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3413832A (en) * | 1965-07-27 | 1968-12-03 | Nat Standard Co | Wire drawing method |
FR2364706A1 (fr) * | 1976-09-16 | 1978-04-14 | Physikalische Versuchsanstalt | Procede et dispositif pour l'etirage de fils, tiges, tubes, et autres produits analogues |
EP0013012A1 (de) * | 1978-12-21 | 1980-07-09 | Akademie der Wissenschaften der DDR | Vorrichtung zur Beschichtung von metallischem Umformgut mit einem Schmierstoff |
GB2057321A (en) * | 1979-08-29 | 1981-04-01 | Uralsky Inst Chernykh Metall | Drawing metals |
DE3542293A1 (de) * | 1984-12-17 | 1986-06-19 | NPSP po chidroplastična obrabotka na metalite, Gabrovo | Drahtziehvorrichtung |
WO1996014946A1 (de) * | 1994-11-11 | 1996-05-23 | Ecoform Umformtechnik Gmbh | Verfahren und vorrichtung zum umformen und/oder beschichten von strangförmigem metallischem umformgut |
-
1999
- 1999-02-02 JP JP2000529908A patent/JP3326499B2/ja not_active Expired - Fee Related
- 1999-02-02 CA CA002318831A patent/CA2318831A1/en not_active Abandoned
- 1999-02-02 AT AT99907481T patent/ATE217218T1/de not_active IP Right Cessation
- 1999-02-02 WO PCT/EP1999/000680 patent/WO1999038625A1/de active IP Right Grant
- 1999-02-02 EP EP99907481A patent/EP1053064B1/de not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3413832A (en) * | 1965-07-27 | 1968-12-03 | Nat Standard Co | Wire drawing method |
FR2364706A1 (fr) * | 1976-09-16 | 1978-04-14 | Physikalische Versuchsanstalt | Procede et dispositif pour l'etirage de fils, tiges, tubes, et autres produits analogues |
EP0013012A1 (de) * | 1978-12-21 | 1980-07-09 | Akademie der Wissenschaften der DDR | Vorrichtung zur Beschichtung von metallischem Umformgut mit einem Schmierstoff |
GB2057321A (en) * | 1979-08-29 | 1981-04-01 | Uralsky Inst Chernykh Metall | Drawing metals |
DE3542293A1 (de) * | 1984-12-17 | 1986-06-19 | NPSP po chidroplastična obrabotka na metalite, Gabrovo | Drahtziehvorrichtung |
WO1996014946A1 (de) * | 1994-11-11 | 1996-05-23 | Ecoform Umformtechnik Gmbh | Verfahren und vorrichtung zum umformen und/oder beschichten von strangförmigem metallischem umformgut |
Also Published As
Publication number | Publication date |
---|---|
ATE217218T1 (de) | 2002-05-15 |
EP1053064A1 (de) | 2000-11-22 |
CA2318831A1 (en) | 1999-08-05 |
JP3326499B2 (ja) | 2002-09-24 |
JP2002501827A (ja) | 2002-01-22 |
EP1053064B1 (de) | 2002-05-08 |
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