EP0080724B1 - Dispositif pour la galvanisation au trempé continu de fils ou de bandes métalliques - Google Patents

Dispositif pour la galvanisation au trempé continu de fils ou de bandes métalliques Download PDF

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Publication number
EP0080724B1
EP0080724B1 EP82111013A EP82111013A EP0080724B1 EP 0080724 B1 EP0080724 B1 EP 0080724B1 EP 82111013 A EP82111013 A EP 82111013A EP 82111013 A EP82111013 A EP 82111013A EP 0080724 B1 EP0080724 B1 EP 0080724B1
Authority
EP
European Patent Office
Prior art keywords
bath
guide member
return guide
zinc
return
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
EP82111013A
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German (de)
English (en)
Other versions
EP0080724A2 (fr
EP0080724A3 (en
Inventor
Giulio Zaccheroni
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to AT82111013T priority Critical patent/ATE19100T1/de
Publication of EP0080724A2 publication Critical patent/EP0080724A2/fr
Publication of EP0080724A3 publication Critical patent/EP0080724A3/de
Application granted granted Critical
Publication of EP0080724B1 publication Critical patent/EP0080724B1/fr
Expired 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
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material

Definitions

  • the invention relates to a device for continuous galvanizing, in particular heavy galvanizing of metallic wire, strip or similar material in an immersion bath made of zinc melt.
  • Such galvanizing is generally carried out in such a way that the continuous material to be galvanized is guided around a roller in the bathroom, whereupon the material then leaves the bathroom vertically upwards behind this roller.
  • This roll is usually made of particularly pure Armco or S.M. steel and has pivots that are stored in graphite sleeves. Both the roller and the bearing sleeves are subject to rapid corrosion in the zinc melt, which is further promoted by the rotational movement of the roller in the zinc bath. The corrosion and the resulting signs of wear cause vibrations which are transferred to the material to be treated and adversely affect the uniformity of the coating and the smooth surface.
  • the movement of the liquid zinc mass caused by the rotation of the roller does not make it possible to move the material to be galvanized forward at an increased speed and thereby to make the device work more profitably without impairing a constant layer thickness and a smooth surface of the galvanized material.
  • the known device does not allow wires of different diameters to be treated at the same time, which would have to have a different throughput speed for galvanizing with properties that are constant among themselves.
  • FR-A 2 380 350 is a device for the continuous hot-dip galvanizing of steel wires, in which a rotatably held deflection body is provided, in the partially cylindrical guide surface of which coaxial grooves are incorporated, each of which serves for guiding a wire.
  • a rotatably held deflection body is provided, in the partially cylindrical guide surface of which coaxial grooves are incorporated, each of which serves for guiding a wire.
  • DE-C 544 071 describes and depicts a method for producing metal coatings on strips or the like, the melting bath of which has different temperatures on the inlet side and on the outlet side.
  • Two fixed deflection bodies are provided for guiding the material to be coated, but the material also grazes along its curved guide surface without interruptions.
  • the invention has for its object to design a device of the type specified in claim 1 so that the disadvantages mentioned are avoided and to design the deflecting body so that a uniform and very smooth coating forms on the material to be galvanized, the material also can run at increased speed through the layers of the immersion bath in which the zinc melt is at its purest. It should be possible to treat several materials of different thickness or diameter at the same time. Furthermore, it should be prevented that the zinc melt has a corrosive effect on the deflecting body, so that the need for maintenance and repair work on the device is reduced to a minimum and no vibrations occur on the material passing through.
  • the deflecting body on the part immersed in the bath has a series of curved guide surfaces extending transversely to the direction of flow of the material, the convex area of which is directed towards the outside of the deflecting body and which are separated from one another by longitudinal grooves which separate one another also extend transversely to the direction of flow.
  • the deflecting body can be formed in one piece; However, according to a variant of the invention, it is also possible to assemble it from a plurality of rigid guide elements in order to form the guide surfaces which are alternately interrupted by the longitudinal grooves.
  • the individual elements can consist of tubes or rods which run parallel to one another and have the longitudinal grooves between them, so that the material to be galvanized alternates with the guide surfaces of the rods and in between comes into contact with the molten zinc.
  • the part of the deflecting body protruding from the bath is designed at its free end in such a way that it can be fastened by means of dovetail connections to a holding clamp, which in turn is slidably held on a carrier cross-member which is about a horizontal axis is pivotable and lockable in a desired angular position.
  • Figure 1 shows schematically a tub 1 with a bath 2 made of zinc melt, through which a plurality of parallel wires 3 made of iron pass.
  • the entry angle of the wires 3 into the bath 2, which they form with the liquid surface, is an acute angle.
  • the wires 3 are deflected upwards so that they run almost vertically and leave the bath 2 through a layer 4 of powdered carbon.
  • the wires 3 are deflected by a deflecting body 5 which is immersed in the bath 2 and can either be in one piece or composed of two or more elements. It consists of ceramic material that is stable at temperatures on the order of at least 450 ° C to 500 ° C, has zinc-melt repellent properties and is corrosion-resistant against zinc melt.
  • a material that has these properties is, for example, that of the Italian company SIRMA S.p.A. material marketed in Sassuolo, Modena province under the brand name CARBAL 130.
  • the deflecting body 5 extends transversely to the tub 1 with respect to the longitudinal direction and partially dips into the bath 2.
  • the part that dips into the bath 2 has a corrugation of mutually coaxial, curved guide surfaces 6, the convex region of which faces the outside of the deflecting body 5 and which are separated from one another by longitudinal grooves 7.
  • the profile of the longitudinal grooves 7 is connected to the profile of the guide surfaces 6 so that there are no sharp edges.
  • the part of the deflecting body 5 protruding from the bath 2 is formed at its free end in such a way that it can be fastened by means of a dovetail connection to a holding clamp 8, which is shown in more detail in FIGS. 2 to 4.
  • This holding clamp 8 is composed of two cross-sectionally C-shaped profile parts 9 and 10, which extend transversely to the tub 1. They are welded together so that a box-shaped body results.
  • a series of tabs 11 is attached, which are provided with tongues 12, which are angled toward the longitudinal plane of symmetry of the element.
  • similar tabs 13 are fastened, which are also provided with tongues 14, which are bent towards the plane of symmetry mentioned.
  • the tabs 13 have flanges on the top, which abut against longitudinal edges 15 which protrude from one side of the C-shaped profile part 10; in this way, the precise fastening of the tabs 13 at the predetermined locations is facilitated by screws on the box-shaped element 9, 10.
  • This box-shaped element also has at its opposite ends a lateral holding plate 16 or 17, of which the holding plate 16 is welded to one end of the box-shaped body, while the other holding plate 17 is fastened to the other end similarly to the tabs 13.
  • the end of the box-shaped element 9, 10 opposite the holding plate 16 is closed by a plate 17 ', from which an edge 15' protrudes, which holds the holding plate 17 at a predetermined height
  • the holding plate 17 and the removable tabs 13 are removed from the box-shaped element 9, 10, whereupon the upper part of the deflecting body 5, which has the profile of an equilateral, inverted trapezoid in cross section; is inserted into the holding clamp 8 in such a way that an oblique side of this trapezoid lies against the angled tongues 12 of the tab 11; then the deflecting body 5 can be fixed in the position reached by the tabs 13 and the holding plate 17.
  • This deflection body 5 is fastened in the same way if it is composed of a plurality of elements, the cross-section of which is identical and which are arranged one behind the other.
  • the upper part of the holding clamp 8 is fastened to a carrier traverse 18 arranged above it, which permits height adjustment of the holding clamp 8 and thus of the deflecting body 5.
  • the carrier crossbeam 18 is in turn supported in the device by known and not shown means so that it can be pivoted about a horizontal axis 19 in order to then be blocked in a desired angular position.
  • the wires 3 or the like which come from upstream treatment stations, for example from a Sendzimir treatment, are kept immersed in the bath 2 by the deflecting body 5. Since the curved guide surfaces 6 are separated from one another by longitudinal grooves 7, the wires 3 slide on these separate guide surfaces 6 without causing friction, vibrations or wear.
  • the zinc melt adhering to the wires 3 acts as a lubricant, which practically eliminates the friction between the wires and the contact zones with the deflection body 5.
  • the length of the contact zones between the guide surfaces 6 and the wires 3 is selected such that the wires are before the zinc melt acting as a lubricant is completely stripped off the wires again, with its entire surface in the area of the longitudinal grooves 7 again coming into contact with the zinc melt in the bath 2.
  • the wires 3 slide without oscillations and vibrations along the curved guide surfaces 6 of the deflecting body 5, which ensures that the wires remain immersed in the bath 2 without being worn by abrasion, because the zinc layer, which serves as a lubricant, Friction phenomena due to the contact between the wires and the guide surfaces 6 of the deflecting body 5 are prevented.
  • the wires 3 leave the deflection body 5 behind the last contact zone with it in i. w. vertical direction until they emerge from the layer 4 on the surface of the bath 2.
  • a deflecting body 5 with the properties according to the invention can be used for a good ten months in a row to galvanize iron wire with a diameter between 1.8 mm to 5.4 mm without ever having to leave the zinc bath of a plant to have to be removed to galvanize twenty-eight wires simultaneously.
  • the device according to the invention has proven to be very economical because the costs for : repair and maintenance work and the costs caused by the loss of production due to longer downtimes of the device are virtually eliminated can be.

Landscapes

  • 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)

Claims (4)

1. Dispositif de galvanisation en continu de fils, bandes ou analogues en métal dans un bain de trempage de zinc en fusion, dans lequel est plongé un corps de renvoi stationnaire pour le guidage du produit à galvaniser dans le bain et pour son renvoi hors du bain, ce corps s'etendant transversalement à la direction du passage du produit, caractérisé par le fait que le corps de renvoi (5) comprend dans sa partie qui est plongée dans le bain (2) une série de surfaces de guidage courbes (6) disposées transversalement à la direction du passage du produit (3), dont la région convexe est dirigée vers le côté extérieur du corps de renvoi (5) et qui sont séparées les unes des autres par des rainures longitudinales (7) s'étendant également transversalement à la direction du passage.
2. Dispositif selon la revendication 1, caractérisé par le fait que la partie du corps de renvoi (5) qui est à l'extérieur du bain (2) est constituée à son extrémité libre de manière à pouvoir être fixée au moyen d'une liaison à queue d'aronde dans une mâchoire de retenue (8) qui est maintenue de son côté de façon mobile sur une traverse de support (18) qui peut pivoter autour d'un axe horizontal (19) et être fixée dans une position angulaire désirée.
3. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que le corps de renvoi (5) est constitué d'un seul tenant.
4. Dispositif selon la revendication 1 ou 2, caractérisé par le fait que le corps de renvoi (5) est constitué par l'assemblage de plusieurs éléments.
EP82111013A 1981-11-30 1982-11-29 Dispositif pour la galvanisation au trempé continu de fils ou de bandes métalliques Expired EP0080724B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82111013T ATE19100T1 (de) 1981-11-30 1982-11-29 Vorrichtung zum kontinuierlichen tauchverzinken von metallischem draht oder band.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT03591/81A IT1146535B (it) 1981-11-30 1981-11-30 Impianto per la zincatura forte in continuo di fili e di nastri metallici o simili,per immersione in un bagno di zinco fuso
IT359181 1981-11-30

Publications (3)

Publication Number Publication Date
EP0080724A2 EP0080724A2 (fr) 1983-06-08
EP0080724A3 EP0080724A3 (en) 1983-08-24
EP0080724B1 true EP0080724B1 (fr) 1986-04-09

Family

ID=11110278

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82111013A Expired EP0080724B1 (fr) 1981-11-30 1982-11-29 Dispositif pour la galvanisation au trempé continu de fils ou de bandes métalliques

Country Status (7)

Country Link
US (1) US4509453A (fr)
EP (1) EP0080724B1 (fr)
JP (1) JPS58110666A (fr)
AT (1) ATE19100T1 (fr)
DE (1) DE3270489D1 (fr)
ES (1) ES8402366A1 (fr)
IT (1) IT1146535B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2679571B1 (fr) * 1991-07-26 1994-07-01 Vesuvius France Sa Procede de depot de metal ou d'alliages metalliques sur une bande metallique et pieces de guidage pour la mise en óoeuvre de ce procede.
US5571328A (en) * 1994-04-06 1996-11-05 National Steel Corporation Bearing support for submerged rolls in hot dip coating operation
WO2009038575A2 (fr) * 2007-09-18 2009-03-26 Vesuvius Crucible Company Guide-fil imprégné de graphite
CN113755775B (zh) * 2021-09-03 2023-06-23 安徽宏源铁塔有限公司 一种垫片镀锌用挂料夹具

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE544071C (de) * 1927-11-08 1932-02-13 Bergmann Elek Citaets Werke Ak Verfahren zur Herstellung von Metallueberzuegen auf Baendern o. dgl.
US3091217A (en) * 1960-03-16 1963-05-28 American Chain & Cable Co Hot-dip coating apparatus
US3570455A (en) * 1969-05-08 1971-03-16 Bethlehem Steel Corp Adjustable coating bath guide
SU676637A1 (ru) * 1977-01-21 1979-07-30 Ордена Ленина И Трудового Красного Знамени Институт Электросварки Им. Е.О.Патона Ан Украинской Сср Электродна печь-ванна дл гор чего покрыти
FR2380350A1 (fr) * 1977-02-15 1978-09-08 Normandie Ste Metallurg Procede et installation de galvanisation continue a chaud de fils d'acier

Also Published As

Publication number Publication date
ES517785A0 (es) 1984-02-01
JPS58110666A (ja) 1983-07-01
DE3270489D1 (en) 1986-05-15
ES8402366A1 (es) 1984-02-01
ATE19100T1 (de) 1986-04-15
IT8103591A0 (it) 1981-11-30
EP0080724A2 (fr) 1983-06-08
EP0080724A3 (en) 1983-08-24
IT1146535B (it) 1986-11-12
US4509453A (en) 1985-04-09

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