EP0013013B1 - Procédé et dispositif pour déposer et sécher des lubrifiants liquides - Google Patents

Procédé et dispositif pour déposer et sécher des lubrifiants liquides Download PDF

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Publication number
EP0013013B1
EP0013013B1 EP19790105307 EP79105307A EP0013013B1 EP 0013013 B1 EP0013013 B1 EP 0013013B1 EP 19790105307 EP19790105307 EP 19790105307 EP 79105307 A EP79105307 A EP 79105307A EP 0013013 B1 EP0013013 B1 EP 0013013B1
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EP
European Patent Office
Prior art keywords
lubricant
air
drying channel
drying
closed
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
Application number
EP19790105307
Other languages
German (de)
English (en)
Other versions
EP0013013A1 (fr
Inventor
Heinz-Rüdiger Dr. rer. nat. Vogel
Harri Dr.-Ing. Weinhold
Bernhard Kurze
Dieter Rauschenbach
Roland Hering
Peter Werner
Heinz Wünsch
Joachim Dr.-Ing. Schlegel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akademie der Wissenschaften der DDR
Original Assignee
Akademie der Wissenschaften der DDR
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27430215&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0013013(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from DD21002978A external-priority patent/DD147210A1/de
Priority claimed from DD21002678A external-priority patent/DD147207A1/de
Priority claimed from DD21002778A external-priority patent/DD147208A1/de
Priority claimed from DD21002478A external-priority patent/DD147206A1/de
Application filed by Akademie der Wissenschaften der DDR filed Critical Akademie der Wissenschaften der DDR
Publication of EP0013013A1 publication Critical patent/EP0013013A1/fr
Application granted granted Critical
Publication of EP0013013B1 publication Critical patent/EP0013013B1/fr
Expired legal-status Critical Current

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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
    • B21C9/00—Cooling, heating or lubricating drawing material

Definitions

  • the invention relates to the field of metallurgy and relates to the application and drying of lubricants which are liquid at room temperature onto metallic metal to be cold-formed, in particular of lubricants which consist of an organic solvent and a solid or semi-solid lubricant incorporated therein, cf.
  • lubricants which consist of an organic solvent and a solid or semi-solid lubricant incorporated therein, cf.
  • Formed material can be, for example, wires, rods and tubes that have to be coated with a lubricant for drawing under hydrodynamic lubrication conditions.
  • the invention has for its object to provide a method and an apparatus for applying and drying liquid lubricants on metal forming material, with which a homogeneous, defined thick and completely dry lubricant coating can be achieved even on rods and tubes and on thick wires . Solidification of the material to be formed should be excluded and simple technological handling should be possible.
  • the object is achieved according to the invention in a method in which the material to be formed is passed through openings through a closed coating container, which is part of a closed lubricant circuit, and then through a drying tunnel, in that the coating container is linear and prevents internal transport rollers from being replaced by previous ones Forming processes or material to be heated, heated by means of an external heat or energy transfer source, excess lubricant emerging from the openings is collected, avoiding contact with the ambient air, and air is sucked or blown through the drying duct with turbulence and / or pressure changes intentionally generated inside the duct . In the case of enrichment with vapors, the air becomes one from the liquid lubricant leaked organic solvent fed to a solvent recovery.
  • the lubricant and the material to be coated can advantageously be contacted in the coating container within a bed of granules.
  • Granulate particles made of a polymer material, which have hydrophobic properties and / or are foamed open-pored, can in particular be used for the granulate fill.
  • a metered supply and / or removal of air takes place along the drying tunnel.
  • the coating container is arranged according to the invention in a device consisting of a closed coating container fed with liquid lubricant and a drying channel for the passage of the material to be formed, within a closed lubricant collecting container and has a lubricant inflow and outflow which together form a already known closed lubricant circuit are connected via a lubricant reservoir and a lubricant pump.
  • the drying duct is equipped with an air suction or air blowing device and with means for generating a turbulent air flow and / or pressure changes along the duct. If the device is used for lubricants which contain an organic solvent, the drying tunnel is coupled to a solvent recovery system.
  • the coating container and the lubricant collecting container are expediently equipped with inlet openings and outlet openings for the material to be coated and a nozzle is inserted into the outlet opening of the collecting container to produce a defined thick layer of lubricant.
  • a bed of granules stored on a sieve can be arranged, into which the lubricant inlet opens, a lubricant collecting space being arranged below the sieve and being connected to the lubricant reservoir.
  • orifices which divide the drying tunnel into chambers or conical nozzles can be arranged, and to further reduce the solvent concentration, nozzles can open into the drying tunnel, through which air is supplied or removed.
  • the invention ensures a uniform and economical coating, regardless of the position of use of the device.
  • the layer thickness can be determined in a simple manner by using an appropriately dimensioned nozzle in the outlet opening of the collecting container. Since the device according to the invention is constructed as a completely closed system, a solvent contained in the lubricant cannot escape into the ambient air, so that no solvent losses occur and special measures for health protection are not necessary. As a result, the device and the method according to the invention are particularly effective for those lubricants which contain an organic solvent. Another advantage of the device according to the invention is that it can simultaneously serve for cooling, in that the lubricant is also used as a coolant.
  • a high drying rate can also be achieved with the method according to the invention and the device for carrying out the method.
  • This makes it possible to achieve high wire drawing speeds in continuously working forming systems, for example when drawing wire, in which a solid lubricant contained in a solvent is applied before the first drawing die and between individual drawing stages. Health and fire protection is also guaranteed when using organic solvents with the help of the provided solvent extraction.
  • the utilization of the forming and frictional heat provided according to the invention there is a considerable increase in the vapor pressure of the solvent and / or dispersion medium in the Layer on the metal material to be formed and thus a significant increase in the drying speed.
  • intermediate coating and drying during multi-stage wire drawing for example, high wire drawing speeds can be achieved.
  • the energy balance of the entire forming process, for example in wire drawing is clearly improved because additional energy has to be applied for the heat of evaporation and / or evaporation from. outside is not required or is reduced to a minimum.
  • a closed coating container 2 filled with a lubricant 1 is arranged within a closed lubricant collecting container 3.
  • Both containers 2; 3 have inlet openings 4; 5 and outlet openings 6; 7, through which the material to be coated 8 is passed.
  • a nozzle 9 (see FIG. 3) is inserted into the outlet opening 7 of the collecting container 3, with the aid of which a defined lubricant film is produced.
  • the lubricant 1 is fed continuously to the coating container 2 by means of a pump 10 from a closed lubricant reservoir 11 via a lubricant feed 12.
  • the collecting container 3 receives the lubricant emerging through the outlet opening 6 and stripped from the nozzle 9 and not required for the respective coating.
  • the coating container 2 and the collecting container 3 are each provided with a lubricant drain 13; 14 equipped, which open into the reservoir 11.
  • a cooler 15 is switched on between the lubricant outlet 13 of the coating container 2 and the reservoir 11.
  • the device acc. Fig. 2 differs from that described above in that the pump 10 does not feed the coating container 2 directly, but an expansion tank 16 is interposed, in which a certain fill level and thus a defined lubricant pressure remain set by means of the pump 10 via a return 17. Between the nozzle 9 and the outlet opening 6 of the coating container 2, a wiper 18 (see FIG. 3) is arranged, which wipes excess lubricant from the material to be formed 8.
  • the scraper 18 is designed as a ring with concentrically arranged soft bristles. Calcium stearate dissolved in benzene or trichlorethylene is used as lubricant 1.
  • a coating container 19 which is sealed off with a lid is completely filled with a granulate fill 20.
  • the granulate particles consist of polyethylene, a hydrophobic polymer material.
  • the coating container 19 has an inlet and an outlet opening 21; 22, through which the material to be coated 8 is passed.
  • the lubricant feed 12 which is fed by the lubricant pump 10 from the lubricant reservoir 11, opens into the granulate fill 20.
  • Calcium stearate dissolved in technical benzene or in trichlorethylene is used as the lubricant 1.
  • a part of the lubricant fed into the granulate bed 20 forms a lubricant film on the material to be formed 8, the other, excess part flows to the bottom of the container and drips through a sieve 23 into a lubricant collecting space 24. From there, the lubricant flows via a lubricant drain 25 into the lubricant reservoir 11 back.
  • the granulate fill has an automatically adjusting area with a high lubricant content. The coating takes place in this area. Excess lubricant is wiped off outside of this area and the applied lubricant film is thereby evaporated and homogenized.
  • the coated material to be formed 8 is transported through a drying tunnel according to FIG. 5 or 6.
  • orifices 30 are inserted between spacer tubes 29.
  • the apertures 30 used at the ends of the drying channel 28 have smaller through openings for the material to be formed 8 than those used inside.
  • nozzles 31 are partially introduced, through which a metered supply of air takes place. With the help of an air suction device, not shown in the drawing, room air is sucked in through a suction port 32 through the drying duct 28 and penetrates through the openings in the outer panels 30 and through the port 31.
  • the inner diaphragms 30 and the air penetrating through the connecting pieces 31 With the help of the inner diaphragms 30 and the air penetrating through the connecting pieces 31, a turbulent air flow and pressure changes are brought about in the drying duct 28. With the air entering through the nozzle 31, the solvent concentration above the lubricant layer is also reduced.
  • the air or drying regime can be optimized by changing the existing air inlet openings. Inside the drying duct 28, the air is heated by means of heat source 33 in the form of heating cartridges.
  • the formed material 8 is heated by an HF inductor 34 arranged in the inlet of the drying channel 28.
  • the extracted air, which with Solvent vapors is enriched, is fed to a solvent recovery system, not shown in the drawing. Instead of the drying duct shown in FIG. 5, the one shown in FIG. 6 can also be used.
  • the inner diaphragms 30 shown in FIG. 5 are replaced by conical nozzles 35.

Claims (9)

1. Procédé destiné à appliquer et à sécher des lubrifiants liquides (1) sur des matériaux métalliques (8) de formage destinés au façonnage à froid, notamment des lubrifiants (1) composés d'un solvant organique et d'une matière lubrifiante introduite solide ou demi- solide, lesdits matériaux de formage (8) étant transportés par l'intermédiaire d'ouvertures à travers un réservoir d'enduction (2, 19) fermé faisant partie d'un circuit de lubrifiant fermé puis à travers un canal de séchage (28); caractérisé par le fait qu'un matériau de formage (8) préalablement transformé ou chauffé au moyen d'une source thermique externe ou d'une source de transmission d'énergie est transporté à travers le réservoir d'enduction (2, 19) de manière rectiligne et sans utilisation de galets de transport internes, le lubrifiant (1) excédentaire sortant des orifices (5, 6, 21, 22,) étant recueilli sans qu'il n'entre en contact avec l'air ambiant et de l'air étant aspiré ou insufflé à travers le canal de séchage (28) avec une turbulence volontairement engendrée, à l'intérieur du canal et/ou des variations de pression, lequel air permetant dans le cas d'un enrichissement avec des vapeurs d'un solvant organique une récupération du solvant.
2. Procédé selon la revendication 1, caractérisé par le fait que le lubrifiant (1) et le matériau de formage à enduire (8) sont amenés l'un et l'autre en contact dans le réservoir d'enduction (19) à l'intérieur d'un amas de granulés (20).
3. Procédé selon la revendication 2, caractérisé par le fait qu'on utilise des particules de granulés en polymère possédant des propriétés hydrophobes et/ou amenées à mousser avec des pores ouverts.
4. Procédé selon la revendication 1, caractérisé par le fait qu'un courant d'air dosé est amené et/ou chassé le long du canal de séchage (28).
5. Dispositif destiné à la réalisation du processus selon une des revendications 1 à 4 et comprenant un réservoir d'enduction (2, 19) fermé, alimenté en lubrifiant (1) liquide et un canal de séchage (28) attenant pour le passage du matériau de formage (8) enduit; caractérisé par le fait que le réservoir d'enduction (2) est placé à l'intérieur d'un réservoir de récupération de lubrifiant (3) fermé et possède une arrivée (12) et un écoulement de lubrifiant (13, 14,25) reliés entre eux pour former une circulation de lubrifiant fermée déjà connue en soi passant par un réservoir de lubrifiant (11) et une pompe à lubrifiant (10); le canal de séchage (28) étant équipé d'un dispositif d'aspiration ou d'insufflation d'air et de moyens permettant d'engendrer un courant d'air turbulent et/ou des variations de pression le long du canal, et qu'en cas d'utilisation du dispositif pour des lubrifiants (1), qui renferment un solvant organique, le canal de séchage (28) est accouplé à une installation de récupération de. solvant.
6. Dispositif selon la revendication 5, caractérisé par le fait que le réservoir d'enduction (2, 19) et le réservoir de récupération (3) de lubrifiant sont équipés d'orifices d'entrée (4, 5, 21) et d'orifices de sortie (6, 7, 22) pour le matériau de formage (8) à enduire, et qu'une tuyère (9) est insérée dans l'orifice de sortie du réservoir de récupération (3), afin de produire une couche de lubrifiant d'épaisseur définie.
7. Dispositif selon la revendication 5, caractérisé par le fait que le réservoir d'enduction (19) au niveau de l'orifice d'entrée et de sortie (21, 22) dispose d'un amas de granulés (20) placé au-dessus d'un crible (23) et dans lequel débouche l'arrivée du lubrifiant (12), un compartiment (24) destiné à récupérer le lubrifiant étant disposé au-dessous du crible (23) et relié au réservoir de lubrifiant (11).
8. Dispositif selon la revendication 5, caractérisé par le fait que des obturateurs (30) divisant le canal de séchage en compartiments, ou des tuyères de forme conique (35) ont été installées pour créer le courant d'air turbulent et/ou les variations de pression dans le canal de séchage (28).
9. Dispositif selon la revendication 5, caractérisé par le fait que des tubulures (31) par où l'air arrive ou s'échappe, débouchent dans le canal de séchage (28) afin de créer le courant d'air turbulent et réduire la concentration de solvant.
EP19790105307 1978-12-21 1979-12-21 Procédé et dispositif pour déposer et sécher des lubrifiants liquides Expired EP0013013B1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
DD21002978A DD147210A1 (de) 1978-12-21 1978-12-21 Verfahren und vorrichtung zum aufbringen fluessiger schmiermittel
DD21002678A DD147207A1 (de) 1978-12-21 1978-12-21 Verfahren und vorrichtung zum aufbringen fluessiger schmiermittel
DD210027 1978-12-21
DD21002778A DD147208A1 (de) 1978-12-21 1978-12-21 Verfahren und vorrichtung zum trocknen von schmiermittelschichten
DD21002478A DD147206A1 (de) 1978-12-21 1978-12-21 Verfahren zum trocknen von schmiermittelschichten
DD210029 1978-12-21
DD210026 1978-12-21
DD210024 1978-12-21

Publications (2)

Publication Number Publication Date
EP0013013A1 EP0013013A1 (fr) 1980-07-09
EP0013013B1 true EP0013013B1 (fr) 1982-11-03

Family

ID=27430215

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Application Number Title Priority Date Filing Date
EP19790105307 Expired EP0013013B1 (fr) 1978-12-21 1979-12-21 Procédé et dispositif pour déposer et sécher des lubrifiants liquides

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EP (1) EP0013013B1 (fr)
DE (1) DE2963995D1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7204112B1 (en) * 2002-12-30 2007-04-17 Dana Corporation Method of lubricating a workpiece for hydroforming
DK2233220T3 (da) * 2009-03-27 2013-02-11 Merksteijn Steel Holding B V Van Sæbebeholder og fremgangsmåde til smøring af en metaltråd
CN102430596A (zh) * 2010-09-29 2012-05-02 山东莱芜金石集团有限公司 表面清刷机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2579778A (en) * 1949-04-06 1951-12-25 United States Steel Corp Method of surface lubrication of metal products
US3557588A (en) * 1968-04-18 1971-01-26 Crucible Inc Method and apparatus for shaving wire
GB1313510A (en) * 1969-11-13 1973-04-11 American Metal Climax Inc Lubrication
AT298378B (de) * 1970-10-20 1972-05-10 Voest Ag Vorrichtung zum Einölen von kontinuierlich bewegtem Fördergut, insbesondere von Blechbändern oder -tafeln
DE7202566U (de) * 1972-01-26 1972-05-04 Fa. August Neuhoff, 5830 Schwelm Ziehmittel-auftragsvorrichtung
FR2324388A1 (fr) * 1975-09-18 1977-04-15 Lens Laminoirs Trefileries Cab Filiere, notamment pour machine a trefiler

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EP0013013A1 (fr) 1980-07-09
DE2963995D1 (en) 1982-12-09

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