EP0402270B1 - Enceinte et installation pour le revêtement continu/intermittent d'objets par passage desdits objets à travers un bain d'un produit métallique liquide de revêtement - Google Patents

Enceinte et installation pour le revêtement continu/intermittent d'objets par passage desdits objets à travers un bain d'un produit métallique liquide de revêtement Download PDF

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Publication number
EP0402270B1
EP0402270B1 EP90401577A EP90401577A EP0402270B1 EP 0402270 B1 EP0402270 B1 EP 0402270B1 EP 90401577 A EP90401577 A EP 90401577A EP 90401577 A EP90401577 A EP 90401577A EP 0402270 B1 EP0402270 B1 EP 0402270B1
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EP
European Patent Office
Prior art keywords
enclosure
objects
tubular body
reservoir
liquid
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 - Lifetime
Application number
EP90401577A
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German (de)
English (en)
French (fr)
Other versions
EP0402270A1 (fr
Inventor
José Delot
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.)
SNTN-DEVELOPPEMENT S.A.
Original Assignee
Delot Process SA
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
Priority claimed from FR8907697A external-priority patent/FR2648155B1/fr
Priority claimed from FR8911344A external-priority patent/FR2651247B1/fr
Application filed by Delot Process SA filed Critical Delot Process SA
Publication of EP0402270A1 publication Critical patent/EP0402270A1/fr
Application granted granted Critical
Publication of EP0402270B1 publication Critical patent/EP0402270B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/14—Removing excess of molten coatings; Controlling or regulating the coating thickness
    • C23C2/24—Removing excess of molten coatings; Controlling or regulating the coating thickness using magnetic or electric fields
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/024—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by cleaning or etching
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06—Zinc or cadmium or alloys based thereon
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S118/00—Coating apparatus
    • Y10S118/11—Pipe and tube outside

Definitions

  • the present invention relates to an enclosure and an installation incorporating such an enclosure for the continuous / intermittent coating of objects by passing said objects through a bath of a liquid metallic coating product.
  • this layer must imperatively be thin so as not to risk reducing the resistance of the surface protective layer, since it is well established that a thick intermetallic layer tends to crack and then peel off the surface of the surface. object she is supposed to protect.
  • the permanent circulation of molten product in installation causes stirring of this product in the melting furnace, which can lead to dross towards the galvanizing enclosure liable to cause obstructions in the circulation pump or in the various passages or conduits in which the molten product circulates; in addition, even in the absence of obstruction, these dross floating on the galvanizing bath can oxidize it and consequently alter the quality of the coating formed on the objects to be covered.
  • the volume of the molten coating product bath is always very large; however, as steel objects pass through this bath, the latter becomes saturated with iron and a ferzinc alloy is formed which is deposited at the bottom of the galvanizing enclosure in the form of mattes, which are detrimental to the purity of the bath and, consequently, to the quality of the coating.
  • a small volume enclosure can be provided, with a first advantage with regard to the integrity of the bath contained in the enclosure due to the elimination of the harmful consequences of the chemical reactions which may occur between this bath and the objects to be treated, and with the second advantage of favoring, by a sufficiently short or even adjustable enclosure length, the control of the contact time, while allowing a scrolling speed all the easier to maintain as it will be weaker.
  • tubular body will be any body having the general shape of a cylinder, of cross section which may have any profile, such as for example a circle, ellipse, parallelogram, or any other more specific benefit.
  • the sealed enclosure for hot galvanizing comprises a tubular body 1 which is filled by suitable means with a liquid metallic product 2, such as molten zinc or a zinc alloy. molten, intended to cover objects 3, for example metallic, in order to protect them against corrosion.
  • the tubular body 1 is open to both ends 4 and 5 to allow the scrolling of the objects 3 to be covered.
  • a first electromagnetic valve 6 disposed at one end 4 of the tubular body 1 makes it possible to seal the inlet of the enclosure, and a second electromagnetic valve 7 disposed at the other end 5 of said tubular body 1 makes it possible to seal the outlet. In this way, a "bubble" of liquid metallic product 2 is trapped between the two valves 6 and 7.
  • the enclosure is equipped with two injectors 8 making it possible to control the injection of a neutral or reducing gas into the tubular body 1.
  • the enclosure is supplied with liquid metallic product 2 by a reservoir, not shown in FIG. 1, connected to said enclosure by a supply duct 9. Furthermore, a drain orifice 10, normally closed, is provided on the enclosure, and empties this enclosure between two galvanizing campaigns in order to carry out its maintenance.
  • tubular body 1 and the supply duct 9 comprise, in a known manner, a heating device not shown in FIG. 1; these devices, which can be constituted by induction heating or by conventional electric heating resistors, provide the heat necessary to keep the liquid metal product 2 in fusion, such as molten zinc or a molten zinc alloy.
  • the electromagnetic valves 6 and 7 are preferably valves of the type described in French patent FR-A-2647874 in the name of the same applicant.
  • tubular body 1 is, of course, made of a material permeable to the magnetic field, such as a ceramic. This material is moreover not wettable by the liquid metallic product 2.
  • a device 13 for adjusting the intensity of the polyphase current from a current source not shown in FIG. 1 - is connected to the inductor winding 11, and supplies it so that the magnetic field created tends to push back the liquid metallic product 2 towards the interior of the enclosure. Indeed, traversed by a current of appropriate intensity, the inductor winding 11 creates, in particular in its middle, magnetomotor forces (represented by arrows in FIG. 1) which act on the liquid metallic product 2, and oppose to its flow through the entry of the tubular body 1.
  • a device 16 for adjusting the intensity of the current coming from the polyphase current source is connected to the inductor winding 14, and supplies the latter so that the magnetic field created tends to repel the liquid metallic product 2 towards inside the enclosure.
  • the magnetomotive forces created by the inductor winding 14 act on the liquid metal product 2 unlike the forces created by the inductor winding 11 of the valve 6, and oppose its flow by the outlet of the tubular body 1.
  • This type of electromagnetic valve 6, 7 with a fixed central magnetic core 12, 15 advantageously solves the problem of interruptions in the movement of the object 3, or of the objects 3, to be covered in the enclosure. Indeed, beyond the presence or absence of objects 3 to be covered in the middle of the inductor windings 11, 14 of the valves 6, 7 ensuring the tightness of the enclosure, a fixed core 12, 15 extends longitudinally in the middle of these windings 11, 14, so that the level of intensity of the polyphase current to be supplied, in order to avoid any leakage of liquid metallic product 2 covering out of the enclosure, remains within an acceptable limit.
  • the objects 3 to be covered can therefore be presented at the entrance to the enclosure in a continuous form, which is conventional, or in a discontinuous form, that is to say be divided into several smaller pieces; the intermittence of the movement of the objects 3 to be covered through the enclosure resulting from this latter arrangement does not require any complex intervention, and makes the use of the sealed enclosure in accordance with the present invention particularly advantageous.
  • the metallurgical deposit obtained on conventional concrete steel wires is perfectly regular; in particular, a concrete wire comprises a succession of notches and projecting parts, called imprints and bolts respectively, of which a part of the profile is substantially perpendicular to the longitudinal direction of said wire. It was possible to obtain, thanks to the enclosure which is the subject of the invention, wires of concrete irons covered with a metallurgical deposit of zinc alloy of constant thickness, even in its steepest parts.
  • the inductor winding 14 can be movable and move on a suitable support 17, which can for example include means 18 for adjusting the position of the inductor winding 14 along the end 5 of the tubular body 1.
  • This adjustment means 18 can, for its part, comprise a nut 19, linked to the support 17, and a conventional worm screw 20 driven in rotation by a stepping motor 21.
  • the volume of liquid metallic product 2 trapped between the valves 6 and 7 is in this way variable - in FIG. 1, we have chosen to represent the inductor winding 14 in solid lines around its extreme position, and in thin broken lines at a particular position along the end 5 of the tubular body 1 -.
  • the core 15 of the electromagnetic valve 7 is therefore longer than the core 12 of the valve established position of the winding 14, only the part of the core 12 located in the middle of said winding 14 is used.
  • This latter arrangement makes it possible to control, for a given running speed of the objects 3 in the enclosure, the contact time between said objects 3 and the liquid metallic product 2. It will be recalled that this contact time is an essential factor in galvanizing continuously ; this feature of the sealed enclosure according to the invention provides a very important additional parameter for controlling the quality and thickness of liquid metallic product 2 deposited on the objects 3. In addition, the adjustment of the volume of the bath contained in the sealed enclosure, obtained in this way, contributes to maintaining the integrity of the liquid metallic product 2 with respect to chemical reactions, such as iron-zinc reactions, occurring in contact with objects 3 and said product 2.
  • the cores 12 and 15 of the electromagnetic valves 6 and 7 enabling the enclosure to be sealed are held longitudinally in the central zone of the tubular body 1 by means of spacers 22, the shape of which is adapted to the profile of the section of said tubular body 1 and to the profile of the section of the cores 12 and 15 respectively, said spacers 22 providing intermediate spaces 24 between said cores 12 and 15 and the internal surface of the tubular body 1 .
  • the intermediate spaces 24 constitute passage zones for the passage of the objects 3.
  • the axes of travel of these objects 3 through the enclosure are in this way offset relative to the longitudinal axis of the tubular body 1.
  • tubular body 1 Several embodiments of the tubular body 1 will now be described.
  • the tubular body 1 may be of circular cross section; the magnetic core 12 or 15 can then be a simple cylindrical bar, the cross section of which is a disc, the spacers 22 delimiting, for example, intermediate spaces 24 of circular or oval section, such as intermediate spaces 26.
  • An enclosure equipped with two valves 6 and 7 having such a cross section can be used in particular to treat against corrosion of the concrete wires 27. This particular case, given by way of example, corresponds to the enclosure which is shown in FIG. 1.
  • profiles can be treated, for example steel.
  • FIG. 3 we have chosen to show a set of two angles 28 in a "U" shape crossing the enclosure at the level of the valves 6 and 7 by the passages provided, between very simplified spacers 22, by means of intermediate spaces 29 of rectangular cross section.
  • the magnetic cores 12 and 15 are then elongated sheets.
  • FIG. 4 we have chosen to show a set of two profiles 30 passing through the enclosure at the level of the valves 6 and 7 by the passages provided, between spacers 22 largely filling the volume of the tubular body 1, by means of spaces spacers 31 of cross section homothetic to the cross section of a profile.
  • the magnetic cores 12 and 15 are then simple cylindrical bars.
  • the cross section of the intermediate spaces 24 is advantageously homothetic to the cross section of the objects 3 to be treated.
  • sheets 32 for example of steel. These sheets 32 pass through the enclosure at the level of the valves 6 and 7 by the passages provided, between very simplified spacers 33, by intermediate spaces 34 of rectangular cross section.
  • the cores 12 and 15 then consist of elongated magnetic sheets.
  • the cores 12 and 15 of the valves 6 and 7 respectively can thus be presented in various forms, with symmetry of revolution, with plane symmetry or possibly being asymmetrical (case not shown).
  • FIGS. 6 to 8 several installations for implementing the method according to the present invention, and comprising, by way of nonlimiting example, a sealed enclosure identical to that which has just been described. .
  • the essential parts of the installation are shown schematically in axial section, and the enclosure can simultaneously process two objects 3, such as concrete reinforcing wires, running in parallel and which are placed, at this effect, in a common vertical plane passing through the central cores 12, 15 of the valves 6 and 7.
  • the flow rate of the liquid metallic product 2 of coating is regulated towards said enclosure as a function of the speed of movement of the objects 3 to be covered in the enclosure and of the desired thickness of the coating 25 , so that the quantity of liquid metallic product 2 which is admitted into the enclosure compensates for that which is absorbed by the coating 25 on the objects 3 leaving the enclosure, without a substantial drop in the level of the liquid metallic product 2 therein, while preserving the integrity of said liquid metallic product 2.
  • This adjustment of the feed rate of the enclosure is, let us recall -the essential for the preservation of the integrity of the bath contained in the enclosure vis-à-vis the chemical reactions occurring in contact with objects 3 and the liquid metallic product 2; this parameter in fact controls in part the rate of renewal of the bath in which it is desired to avoid, in accordance with the teachings of the invention, the formation of precipitated solid residues, for example in the form of iron-zinc salts in the case of galvanization hot (mattes).
  • the two support devices 38 and 41 are at least respectively housed in casings 46 and 47 connected by sections of conduits 48 and 49 to the stripping assembly 37 and to the heating enclosure 39 and by sections of conduits 50 and 51 to said heating enclosure 39 and to the galvanizing enclosure, respectively, and inside which an atmosphere is created protected by injection of a neutral or reducing gas in order to make any oxidation of the products impossible during the different treatment phases.
  • injectors 52 are for example provided for the gas in the casings 46 and 47 and in the wiping device 43.
  • the supply duct 9 of the enclosure is connected to an oven or reservoir 54 and is equipped with a heating device 53 similar to the heating devices 40 and 42.
  • the oven or reservoir 54 has two compartments, namely a melting compartment 55 and a withdrawal compartment 56, separated from the fusion compartment 55 by a partition 57 providing a passage between its lower part and the bottom of the reservoir 54 to allow the molten metal to pass from compartment 55 to compartment 56.
  • the top of the molten metal baths contained in each of the two compartments 55 and 56 is under a controlled atmosphere.
  • each of the two compartments 55, 56 is housed by a cover 55 a, 56 a provided with an injector 58, 59 by means of which a neutral or reducing gas may be introduced above the molten metal bath to avoid their oxidation.
  • the heating system of the reservoir 54 is in principle entirely conventional.
  • the melting compartment 55 is equipped with a system 60 allowing metal ingots 61 to be introduced through a sealing airlock, this introduction system 60 being adjusted as a function of the level of the bath in the withdrawal compartment 56.
  • the means for regulating the feed rate of the enclosure consist of an adjustment valve 62, which is inserted in the supply duct 9 between the reservoir 54 and the enclosure.
  • the valve 62 can be of any type used to regulate the flow rate of a flow of molten metal.
  • this valve 62 is constituted by an electromagnetic valve of the type in accordance with French patent FR-A-2647874 already mentioned.
  • the two windings 63 and 64 of this valve 62 are supplied with current from the current source 65, via respective current adjustment devices 66 and 67.
  • Each of the two windings 63 and 64 is arranged and electrically connected in such a way that, when it is supplied with current, it produces an electromagnetic field sliding in the opposite direction from the direction of flow of the molten metal towards the enclosure, thus creating a magnetomotor force which opposes the flow of the molten metal.
  • the supply pressure of the molten metal is itself kept substantially constant and the flow of molten metal to the enclosure can be regulated by adjusting the intensity of the currents excitation of the windings 63 and 64.
  • the adjustment of the valve 62 can be carried out manually or, in a more sophisticated installation, it is also possible to control the valve 62 to one or more of the operating parameters of the installation, for example at the speed of movement of the objects 3 through the enclosure.
  • the tank 54 is located at a certain distance above the galvanizing enclosure. However, as shown in FIG. 7, the tank 54 can be placed at approximately the same level as the enclosure, the level 68 of the molten metal in the tank 54 however being slightly higher than the highest level that the tank can reach. molten metal inside said enclosure. In this case, the hydrostatic pressure of the molten metal admitted into the enclosure being lower than in the case of FIG. 6, the electric power necessary to regulate the feed rate of the enclosure of molten metal is lower.
  • the level 69 of the molten metal in the withdrawal compartment 56 of the reservoir 54 is lower than the level of the enclosure.
  • the molten metal is discharged towards the enclosure through the supply duct 9 by injecting into the reservoir 54, through the injector 59, an inert gas compressed at a pressure sufficient to raise the level of the molten metal in the duct d brought 9 into the enclosure.
  • the compressed inert gas comes from a source 70 of compressed inert gas, via a pressure adjustment device 71.
  • the supply duct 9 has a calibrated passage section. This can for example be obtained by placing a calibrated nozzle in said conduit 9. Under these conditions, the supply flow rate of the enclosure is regulated by means of the pressure adjustment device 71.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Apparatus (AREA)
  • Pens And Brushes (AREA)
  • Pretreatment Of Seeds And Plants (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Road Signs Or Road Markings (AREA)
  • Paints Or Removers (AREA)
  • Chemical Treatment Of Metals (AREA)
  • Packages (AREA)
  • Moulding By Coating Moulds (AREA)
  • Scissors And Nippers (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
  • Devices For Checking Fares Or Tickets At Control Points (AREA)
  • Closures For Containers (AREA)
  • General Preparation And Processing Of Foods (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Securing Of Glass Panes Or The Like (AREA)
EP90401577A 1989-06-09 1990-06-08 Enceinte et installation pour le revêtement continu/intermittent d'objets par passage desdits objets à travers un bain d'un produit métallique liquide de revêtement Expired - Lifetime EP0402270B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8907697A FR2648155B1 (fr) 1989-06-09 1989-06-09 Procede et installation pour recouvrir d'un revetement des objets de forme allongee par passage desdits objets a travers une masse liquide du produit de revetement
FR8907697 1989-06-09
FR8911344A FR2651247B1 (fr) 1989-08-29 1989-08-29 Enceinte etanche utilisable pour recouvrir d'un produit a base de metal ou d'alliage metallique des objets continus ou discontinus de forme allongee, defilant a travers elle d'une maniere continue ou intermittente, selon des axes.
FR8911344 1989-08-29

Publications (2)

Publication Number Publication Date
EP0402270A1 EP0402270A1 (fr) 1990-12-12
EP0402270B1 true EP0402270B1 (fr) 1995-08-16

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EP90401577A Expired - Lifetime EP0402270B1 (fr) 1989-06-09 1990-06-08 Enceinte et installation pour le revêtement continu/intermittent d'objets par passage desdits objets à travers un bain d'un produit métallique liquide de revêtement

Country Status (32)

Country Link
US (1) US5338581A (cs)
EP (1) EP0402270B1 (cs)
JP (1) JP2919962B2 (cs)
KR (1) KR100197184B1 (cs)
CN (1) CN1035747C (cs)
AT (1) ATE126549T1 (cs)
AU (1) AU642655B2 (cs)
BG (1) BG95735A (cs)
BR (1) BR9007429A (cs)
CA (1) CA2062720C (cs)
CZ (1) CZ285270B6 (cs)
DD (1) DD299419A5 (cs)
DE (1) DE69021644T2 (cs)
DK (1) DK0402270T3 (cs)
DZ (1) DZ1422A1 (cs)
EG (1) EG19037A (cs)
ES (1) ES2077656T3 (cs)
FI (1) FI93976C (cs)
HU (1) HU209683B (cs)
IE (1) IE80596B1 (cs)
LV (1) LV11045B (cs)
MA (1) MA21865A1 (cs)
NO (1) NO304031B1 (cs)
OA (1) OA09410A (cs)
PL (1) PL165190B1 (cs)
PT (1) PT94323B (cs)
RU (1) RU2098196C1 (cs)
TN (1) TNSN90077A1 (cs)
TR (1) TR26670A (cs)
UA (1) UA19871A (cs)
WO (1) WO1990015166A1 (cs)
YU (1) YU47223B (cs)

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DE9013648U1 (de) * 1990-09-28 1992-02-06 INTERATOM GmbH, 5060 Bergisch Gladbach Flüssigmetall-Durchlaufbeschichtungsanlage
BR9206200A (pt) * 1991-06-25 1994-11-29 Allied Tube & Conduit Corp Processo contínuo para a galvanização de elementos lineares e aparelho para a galvanização contínua de um elemento linear
FR2700555B1 (fr) * 1993-01-20 1995-03-31 Delot Process Sa Procédé de dimensionnement d'une enceinte de galvanisation pourvue d'un dispositif d'essuyage magnétique de produits métallurgiques galvanisés.
JPH0776763A (ja) * 1993-09-01 1995-03-20 Praxair St Technol Inc 合金層の付着防止性に優れた亜鉛めっき浴用部材とその製法およびそれを用いる溶融亜鉛めっき法
DE69406396T2 (de) * 1993-11-30 1998-05-28 Danieli Off Mecc Verfahren zum Rückleiten von Behandlungsgut bei Oberflächenbehandlungen und Fertigbearbeitungen
US5506002A (en) * 1994-08-09 1996-04-09 Allied Tube & Conduit Corporation Method for galvanizing linear materials
DE102008036321A1 (de) * 2008-07-29 2010-02-04 Dürr Systems GmbH Lackieranlage zum Lackieren von zu lackierenden Gegenständen
DE102008036322A1 (de) * 2008-07-29 2010-02-04 Dürr Systems GmbH Zwischenlager zum Zwischenlagern von zu lackierenden Gegenständen
DE102009020077A1 (de) 2009-05-06 2010-11-11 Dürr Systems GmbH Beschichtungsmittelvorrichtung und Beschichtungsvorrichtung
DE102009060649A1 (de) * 2009-12-22 2011-06-30 EISENMANN Anlagenbau GmbH & Co. KG, 71032 Anlage zur Oberflächenbehandlung von Gegenständen
DE102010032144A1 (de) * 2010-07-24 2012-01-26 Eisenmann Ag Behandlungseinheit und Anlage zur Oberflächenbehandlung von Gegenständen
CN105895391B (zh) * 2016-06-17 2018-08-17 昆山微容电子企业有限公司 低尘电容包封机
CN105895390B (zh) * 2016-06-17 2018-08-21 昆山微容电子企业有限公司 一种便于操作的电容包封机
US11242590B2 (en) 2017-04-18 2022-02-08 Western Technologies, Inc. Continuous galvanizing apparatus for multiple rods
US11149337B1 (en) 2017-04-18 2021-10-19 Western Technologies, Inc. Continuous galvanizing apparatus and process
CN113356184B (zh) * 2021-07-26 2022-08-09 黑龙江省建筑安装集团有限公司 一种土木工程建筑组合桩
CN115430572B (zh) * 2022-07-26 2024-02-13 深圳市曼恩斯特科技股份有限公司 一种供料***及涂布生产线

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JPS5129981B2 (cs) * 1973-07-17 1976-08-28
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HU905392D0 (en) 1992-04-28
JP2919962B2 (ja) 1999-07-19
PT94323B (pt) 1997-05-28
CZ286090A3 (cs) 1999-02-17
ATE126549T1 (de) 1995-09-15
NO914765D0 (no) 1991-12-04
CN1050689A (zh) 1991-04-17
IE902036A1 (en) 1991-01-02
CN1035747C (zh) 1997-09-03
TNSN90077A1 (fr) 1991-03-05
LV11045B (en) 1996-08-20
CZ285270B6 (cs) 1999-06-16
PT94323A (pt) 1991-02-08
PL285548A1 (en) 1991-01-14
FI93976B (fi) 1995-03-15
DE69021644T2 (de) 1996-04-25
EG19037A (en) 1995-03-30
BG95735A (bg) 1993-12-24
RU2098196C1 (ru) 1997-12-10
MA21865A1 (fr) 1990-12-31
NO304031B1 (no) 1998-10-12
CA2062720C (fr) 1999-08-10
OA09410A (fr) 1992-09-15
YU47223B (sh) 1995-01-31
NO914765L (no) 1991-12-04
KR100197184B1 (ko) 1999-06-15
CA2062720A1 (fr) 1990-12-10
FI915778A0 (fi) 1991-12-09
HU209683B (en) 1994-10-28
DE69021644D1 (de) 1995-09-21
YU110490A (sh) 1993-10-20
BR9007429A (pt) 1992-06-16
ES2077656T3 (es) 1995-12-01
US5338581A (en) 1994-08-16
LV11045A (lv) 1996-02-20
KR920701502A (ko) 1992-08-11
UA19871A (uk) 1997-12-25
JPH05503315A (ja) 1993-06-03
FI93976C (fi) 1995-06-26
DD299419A5 (de) 1992-04-16
AU5925890A (en) 1991-01-07
PL165190B1 (pl) 1994-11-30
HUT59965A (en) 1992-07-28
AU642655B2 (en) 1993-10-28
TR26670A (tr) 1995-03-15
DK0402270T3 (da) 1996-01-15
IE80596B1 (en) 1998-10-07
WO1990015166A1 (fr) 1990-12-13
DZ1422A1 (fr) 2004-09-13
EP0402270A1 (fr) 1990-12-12
IE902036L (en) 1990-12-09

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