Galvanising process of wires in continuous scrolling and system of wire wiping

Abstract

High speed wire galvanizing process and wiping die system where the die height is adjustable.

Description

[0001] The present invention relates to a method for galvanizing wires in continuous scrolling.

[0002] Continuously flowing wire or strip galvanizing processes are known where a galvanizing bath is fed by a running wire or strip to pass through a bed of molten metal. Typically, the wires or strips are formed from a ferrous material, such as steel or the like.

[0003] Galvanizing can be done through a bath of aluminum or zinc, or sometimes other metals or alloys such as tin or a tin-based alloy. Galvanizing thus involves applying an external coating to the wire or strip to give it specific properties, such as corrosion resistance to the underlying ferrous material.

[0004] Controlling the thickness of the molten coating layer has long been a technical challenge, as without a device to control it, it can be too thick, uneven, or both. Over the years, gas wiping techniques, usually inert or reducing, have been developed to standardize and / or reduce the weight or thickness of the coating.

[0005] Thus, the wires are directed after the galvanizing bath through a wiping die to remove the excess molten metal used to galvanize the wire. The wiping die can thus be placed above the galvanizing bath, so as to collect the wiped excess molten metal.

[0006] For example, document EP38975 discloses that various wiping devices have been used to wipe the coating while it is still in the molten state. This document addresses the problem of non-uniform coatings of wires by proposing, instead of varying the wire feed speed to control the coating of the wire, to vary the flow rate of inert or reducing wiping gas and to use certain parameters of the wiping die.

[0007] The critical parameters of the wiping die are according to this document as follows: a downward wiping gas outlet angle of about 10 to 45 degrees, preferably 15 to 30 degrees, relative to the perpendicular to the surface of the wire passing through the die, a wiping gas outlet width parallel to the direction of travel of the wire through the die of about 0.254 to 2.032 mm, preferably 0.508 to 1.27 mm, substantially parallel sides of the wiping gas outlet, a minimum length of the wiping gas outlet, along the line of passage of the wiping gas, not less than 0.635 cm.

[0008] Again according to this document, the height of the wiping gas outlet above the molten coating bath should be 1.27 to 38.1 cm, preferably about 1.27 to 25.4 cm, and more particularly 1.27 to 10.16 cm. Analysis of the figures reveals that the height of the wiping gas outlet is very close to the molten metal bath in the absence of a hood containing an atmosphere protecting the coating from oxidation, while the die may be further away in the presence of this hood.

[0009] Document EP38975 thus concludes that the combination of all critical parameters is essential to obtain a satisfactory coating thickness. Thus, in the embodiment of the figure 1 of this document, a wiping die includes a lower cavity under a protective atmosphere integrated with the wiping die. In this embodiment, for a 1 mm thick wiping gas outlet, a 25° downward inclination angle and a 2.54 cm die lumen, the wiping gas outlet must be located 10.16 cm from the galvanizing bath and the bottom of the lower cavity then gravitates to 2.54 cm from the molten metal bath. In the embodiment of the figure 2 , where a protective hood is present, the wiping gas outlet has a thickness of 0.762 cm and an inclination angle of 30°. The wiping gas outlet is thus positioned 12.7 cm above the molten metal bath. Finally, in the embodiment described in figure 3 , no hood or protective cavity is present and in this case, for a 1 mm thick wiping gas outlet, a 25° downward inclination angle and a 2.54 cm die lumen, the wiping gas outlet must be located 3.81 cm from the galvanizing bath.

[0010] As can be seen from this document, it is only possible to move the die away in the presence of a protective hood because the molten metal would, without this protection, be subject to oxidation which would harm the quality of the coating. Furthermore, although this document is silent on the diameter of the wire to be coated, it is highly likely that the critical parameters described are applicable for a single wire diameter since the diameter of the die lumen is always the same. However, this depends on the diameter of the wire to be wiped.

[0011] In any case, identifying the parameters of the wiping process is a complex operation which depends on numerous constraints.

[0012] Currently, wire running speeds are increasingly high, and galvanizing plants must be more flexible. Indeed, in wire galvanizing, it is common to have to produce wires of different diameters simultaneously, which means using wiping dies in the same plant with different geometries.

[0013] However, with increasingly high running speeds, when passing through the galvanizing bath, the wire carries a meniscus of molten metal that grows with the wire running speed. The increasing size of the meniscus also results in a greater occurrence of the entrainment of quantities of partially oxidized molten metal, which thus has a higher viscosity, forming a sort of lump. However, the constraints in terms of the quality of the coating expected by customers are not alleviated, on the contrary; the industry expects a constant quality of coatings.

[0014] The invention aims to address these technological challenges and to at least partially overcome the drawbacks of the state of the art by providing a galvanizing process making it possible to maintain a constant coating quality, which quality does not depend on the diameter of the wire to be treated, coping with increasingly high running speeds while providing the required flexibility in terms of production.

[0015] To solve this problem, the invention provides a method for galvanizing wires moving at high speed, comprising: (i) a supply of a galvanizing bath comprising at least one bed of molten metal by a series of moving wires where each wire in the series has a size Dv of between 140 and 400 mm.m / min, (ii) Galvanizing by passing each of the wires of said series of wires through said galvanizing bath, (iii) Guiding each of the wires of said series of wires in passing from a galvanizing direction to a wiping direction, (iv) Wiping each wire of said series of wires in passing by passing through a wiping slot of a wiping die, said wiping slot being crossed by a blade of wiping gas emerging from a peripheral slot to said wiping slot at a wiping gas flow rate of between 0.6 and 9 m 3 / hour, more particularly between 1 and 6 m 3 / hour, said peripheral slot being positioned at an adjustable distance X from the bed of molten metal of between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4.5 and 11 cm, (v) A guide for each of the wires of said series of wires in scrolling towards a collection device.

[0016] As can be seen, in the method according to the present invention, the method comprises a feeding of several wires in parallel. Each wire runs, parallel to the others, with a high magnitude Dv which is the product of its diameter D by a running speed v. Thus, a wire of large diameter has a magnitude Dv identical to the magnitude Dv of a wire of smaller diameter. However, for these magnitudes Dv to be identical, this means that the running speed v of the wire of large diameter is lower than the running speed v of the wire of smaller diameter. These different types of wire are thus processed in parallel in the same galvanizing / wiping installation.

[0017] Each of these wires is continuously immersed in the galvanizing bath and is then directed by a guide shoe through its wiping die. Each wire is thus fed in the wiping direction, generally vertically, from bottom to top.

[0018] As it passes through the wiping die, each wire is wiped, or in other words, scraped all around by the peripheral gas blade created, the gas blade coming into contact with the wire to be wiped. The excess coating then flows by gravity down the wire, i.e. counter-current to the wiping direction. The excess molten metal thus returns to the galvanizing bath.

[0019] As previously indicated, the molten metal is sensitive to oxidation and cooling, which cause an increase in the viscosity of the molten metal and the appearance of lumps. When running at the indicated size Dv, the wire carries a meniscus of molten metal, the size of which is proportional to the wire running speed and its diameter. When the meniscus is large and the wiping die is positioned close to the upper surface of the molten metal bed, molten metal splashes onto the die, which may block its inlet or partially block it, which may impede gas circulation. In addition, the excess molten metal flowing countercurrently creates a relatively turbulent zone near the pool due to the encounter between the excess molten metal and the meniscus of molten metal carried by the running wire.It thus appeared that in the case of a galvanizing process where the wires have a high running speed, it was advantageous to be able to arrange the peripheral slot of the wiping die at a distance d further from the molten metal bath and between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4.5 and 11 cm, and that this further distance did not hinder the quality of the coating, against all expectations.

[0020] Indeed, according to the state of knowledge, it was unthinkable to separate the wiping die from the galvanizing bath without creating a protective atmosphere around the wiping system. However, according to the present invention, it has appeared possible to increase the distance between the inlet of the wiping die and the surface of the molten metal bed, without resorting to an enclosure under a protective atmosphere and without significantly increasing the oxidation of the molten metal and the quantity of lumps formed.Furthermore, as several wires of different diameters are generally galvanized at the same time, it also appeared very advantageous to be able to adjust the height of each wiping die and thus to distance (increase the distance d) the wiping dies of fine wires from the galvanizing bath and to distance less (reduce the distance d) the wiping dies of larger diameter wires from the galvanizing bath, as long as d remains between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4.5 and 11 cm. However, since the fine wires carry less material, it could be expected that the surplus molten metal would be more easily oxidized since it has a larger contact surface with the ambient atmosphere.However, it would appear, without the applicant being able to guarantee the accuracy of this theory, that the flow rate of wiping gas between 0.6 and 10 m 3 / hour, more particularly between 1 and 6 m 3 / h, which leaves the peripheral slot to form the gas blade and which then leaves the die from the top (by being entrained by the wire) and from the bottom, by being entrained by the surplus molten metal, is sufficient to create a protective case making it possible to maintain a satisfactory coating quality, without requiring frequent changing or cleaning of the wiping die.

[0021] For the purposes of the present invention, the term "wire" means a metal wire, a metal cable as well as any other equivalent elongated metal shape to be galvanized, of substantially circular cross-section. The possibility of galvanizing metal ribbons is also envisaged, but in this case, the shape of the peripheral slot must be adapted in order to uniformly coat the faces of the ribbon.

[0022] Preferably, each wire in the series has a diameter D, a speed v and a magnitude Dv of between 140 and 400 m.mm / min.

[0023] Preferably, said wiping gas blade is directed from said peripheral slot towards a central axis of said wiping light at an angle of between 0 and 75° downwards, measured relative to a plane perpendicular to said wiping direction or relative to a plane transverse to said wiping light.

[0024] Preferably, said peripheral slot is positioned at an adjustable distance X relative to the bed of molten metal by height adjustment means, said adjustable distance X being between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4.5 and 11 cm.

[0025] Preferably, said height adjustment means make it possible to vary said adjustable distance X according to said size Dv of each wire of said series of moving wires in such a way that the adjustable distance X is between 3 and 20 cm, more particularly between 4 and 15 cm, even more particularly between 4.5 and 11 cm, and even more particularly between 5 and 8 cm.

[0026] Advantageously, said gas blade is directed from the periphery of the wiping light towards a central axis of said wiping light and preferably from the entire periphery of the wiping light towards said central axis, more particularly oriented at an angle α of between 20 and 40°, more particularly between 25 and 35°, even more particularly 27° and 32° downwards, measured relative to a plane P perpendicular to said wiping direction.

[0027] Preferably, said angle is measured relative to a plane perpendicular to said wiping direction or relative to a plane transverse to said wiping light.

[0028] In one embodiment according to the present invention, each thread has a running speed of between 20 and 200 m / min.

[0029] In another advantageous embodiment of the present invention, the molten metal bed in the galvanizing bath contains at least zinc.

[0030] More particularly according to the present invention, the bed of molten metal in the galvanizing bath has a temperature between 445 and 480°C.

[0031] Preferably, according to the present invention, the wiping gas is nitrogen.

[0032] Other embodiments of the method of galvanizing wires in high-speed scrolling according to the invention are indicated in the appended claims.

[0033] The invention also relates to a wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen-based, of galvanized wires comprising a body provided with a first and a second block, said first block comprising a through orifice defining a first part of a wiping lumen, and said second block comprising a through orifice defining a second part of a wiping lumen, said first block having an annular trench arranged around said through orifice of said first block as well as a hollow channel terminating on the one hand in an external wall of said first block and on the other hand in said annular trench,said first block and said second block being arranged to be positioned in a juxtaposed position such that the through-orifice of the first block and the through-orifice of the second block are aligned together to form a wiping lumen formed from said first portion of the wiping lumen and the second portion of the wiping lumen and such that said second block closes said annular trench to form a receiving chamber for said gas and closes said recessed channel to form a gas supply tube for the wiping die, said receiving chamber being in fluid communication with said wiping lumen by fluid communication means, said second block being arranged to be held in a juxtaposed position by a fixing means and to be connected to a vertical wall of a galvanizing line via a mounting plate, above a galvanizing bath,characterized in that said mounting plate is connected to the vertical wall of said galvanizing line by means of a fixing system comprising means for adjusting the height at which the die is fixed above the galvanizing bath.,

[0034] The wiping die comprises a body formed of two blocks which are fixed by fixing means adjacent to each other. The use of a two-part wiping die allows, in the event of excessive projection, to replace only the lower part. The wiping die system is connected to the galvanizing line by a fixing system which includes means for adjusting the height of the wiping die and thus to be able to place several dies of a series of wiping dies at different heights depending on the diameter of the wire, while distancing it from the molten metal bath so as not to obstruct the wiping die by the aforementioned turbulence.

[0035] In a particular embodiment of the present invention, said first block comprising a through-orifice defining a first part of a wiping light is formed of a first half-block and a second half-block, the first half-block having a part of said through-orifice and the second half-block having another part of said through-orifice complementary to the part of the through-orifice of said first half-block, so that when the first and second half-blocks are juxtaposed to each other forming a juxtaposition position, the through-orifice of said first block is formed.

[0036] Similarly, said first block has an annular trench arranged around said through-hole of said first block. The annular trench may be formed by bringing together said first and second half-blocks forming the first block when they are present. In other words, a portion of the annular trench may be present in the first half-block and another portion, complementary to the portion of the annular trench of the first half-block, is present in the second half-block.

[0037] When two half-blocks are present to form the first and / or second block of the wiping die, a clamping system also holds the half-blocks in a juxtaposed position. Using a first and / or second block in several parts (at least two), to form the wiping die allows, in the event of excessive projection, to replace only one half-block, but above all makes it possible to avoid having to remove the wire running from the galvanizing line when a part is to be replaced.

[0038] The wiping die system is connected to the galvanizing line by a fixing system which includes means for adjusting the height of the wiping die and thus making it possible to place several dies of a series of wiping dies at different heights depending on the diameter of the wire, while keeping it away from the molten metal bath so as not to obstruct the wiping die with the aforementioned turbulence.

[0039] More particularly, it is also provided according to the invention that said second block comprising a through-orifice defining a second part of a wiping light is formed of a first half-block and a second half-block, the first half-block having a part of said through-orifice and the second half-block having another part of said through-orifice complementary to the part of the through-orifice of said first half-block, so that when the first and second half-blocks are juxtaposed to each other forming a juxtaposition position, the through-orifice of said second block is formed.

[0040] Advantageously, in the gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to the present invention, said fluid communication means is formed of a slot peripheral to the wiping light which extends between the wiping gas receiving chamber and the wiping light and thus allows the formation of a blade of wiping gas.

[0041] In a particular embodiment of the invention, said peripheral slot is inclined downwards by an angle α of between 20 and 40°, more particularly between 25 and 35°, even more particularly between 27° and 32° relative to a plane P perpendicular to a direction of travel of the galvanized wires.

[0042] More advantageously still, the peripheral slot has an upper wall formed by a portion of an outer face of said first block, which may optionally be formed by a portion of an outer face of the first half-block and the second half-block of said first block. Optionally, the peripheral slot has a lower wall formed by a portion of an outer face of said second block, which may optionally be formed by a portion of an outer face of the first half-block and the second half-block of said second block.

[0043] Advantageously, in the gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to the present invention, said wiping light is cylindrical in shape and has a constant diameter d over a height h of between 80 and 100% of a height H of the body of the wiping die, preferably between 85 and 95% of said height H, more particularly between 90 and 95% of said height H.

[0044] More particularly, according to the present invention, said wiping light has an upper mouth and a lower mouth, each preferably terminating in the ambient environment, said lower mouth being arranged to allow an inlet of galvanized wires and a countercurrent outlet of said wiping gas and said upper mouth being arranged to allow an outlet of wiped galvanized wires and of the wiping gas in a co-current manner, said upper mouth extending over a predetermined height h1 between an end linked to said light of constant diameter and a free end forming an outlet made in the external face of said die body and has over this height h1 an increasing diameter going from the diameter d to a diameter D1 which is the diameter of the outlet,said lower mouth extending over a predetermined height h2 between an end linked to said light of constant diameter and a free end forming an outlet made in the external face of said die body and has over this height h2 an increasing diameter going from diameter d to a diameter D2 which is the diameter of the outlet, with D2>D1.,

[0045] Even more advantageously, according to the present invention, said lower mouth has a first part extending over a predetermined height h3 juxtaposed with said light of constant diameter d which has over this height h3 an increasing diameter going from diameter d to a diameter D2 and a second part extending over a predetermined height h4, juxtaposed with said first part which has over this height h4 said diameter D2.

[0046] In a particular embodiment, said upper mouth has a wall which is formed by a part of an outer face of said first and said second half-block forming the first block of the wiping die.

[0047] In a particular embodiment, said lower mouth has a wall which is formed by a part of an outer face of said first and said second half-block forming the second block of the wiping die.

[0048] Preferably, according to the present invention, said first block has a periphery and said second block has a periphery complementary to the periphery of said first block.

[0049] More preferably, in the gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to the present invention, said peripheral slot extends over a distance F between said chamber for receiving said wiping gas and said wiping light of between 1 and 4 mm.

[0050] More particularly, said peripheral slot has a height forming a thickness of said wiping gas blade of between 0.3 and 0.5 mm, more particularly between 0.35 and 0.45 mm and more particularly approximately 0.4 mm.

[0051] In an advantageous embodiment of the present invention, said chamber for receiving said wiping gas has a volume of between 1.2 and 8 cm 3< , more particularly between 1.35 and 7 cm 3< , and preferably between 1.5 and 6 cm 3< .

[0052] In yet another advantageous embodiment of the present invention, said chamber for receiving said wiping gas and said wiping light are spaced apart by a distance of between 1 and 4 mm.

[0053] According to the present invention, in the gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to the present invention, the galvanizing bath is arranged to contain a molten metal bed provided with a molten metal bed upper surface and said height adjustment means to which the die is fixed above the galvanizing bath are chosen from a fixing bracket with holes for fixing said wiping die at different heights above said galvanizing bath, a notched guide rail in which slides a guide fixed to said wiping die, a rack system for adjusting the height of the wiping die above the galvanizing bath, and the like,said adjustment means being arranged to allow said wiping die to be fixed at a height such that said peripheral slot is located at a height of between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4.5 and 11 cm relative to the upper surface of the molten metal bed, corresponding to an adjustable distance X.,

[0054] In a particular embodiment, said hole-fitting bracket is chosen as height adjustment means at which the wiping die is fixed above the galvanizing bath.

[0055] Preferably, said holed mounting bracket is a mounting bracket comprising a downwardly facing longitudinal hole in which bolted rods can move vertically, allowing said wiping die to be fixed at different heights above said galvanizing bath.

[0056] Alternatively, said holed mounting bracket is a mounting bracket comprising a plurality of holes into which bolted rods are engaged at a desired height, allowing said wiping die to be secured at different heights above said galvanizing bath.

[0057] The said longitudinal orifice has the advantage of allowing the height to be adjusted continuously, without having to be limited to staggered positions, thus offering great flexibility to precisely choose the height of the die within the limits of the longitudinal orifice.

[0058] More particularly, said height adjustment means to which the die is fixed above the galvanizing bath are arranged to allow contact between the wiping gas blade and said running wire at a height of between 2.5 and 19.5 cm, more particularly between 3.5 and 14.5 cm, even more particularly between 4 and 10.5 cm.

[0059] Advantageously, according to the present invention, a clamping system is provided which comprises said mounting plate, preferably a back mounting plate which is connected to said vertical wall of the galvanizing line via said fixing system.

[0060] For the purposes of the present invention, the term “clamping system” means a system allowing parts to be held by clamping or pinching.

[0061] Preferably, said fixing system further comprises a set of bolted rods.

[0062] More particularly still, according to the present invention, a part of the bolted rods is arranged to assemble said back mounting plate to said height adjustment means and another part of which makes it possible to assemble said height adjustment means to said vertical wall of the galvanizing line.

[0063] Particularly preferably, according to the present invention, said fixing system further comprises a compressible element arranged between the dorsal mounting plate and said height adjustment means.

[0064] Said compressible element allows the centering of the die light around the wire.

[0065] Other embodiments of the gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen, of galvanized wires according to the invention are indicated in the appended claims.

[0066] The present invention finally relates to a galvanizing line comprising: a. A series of means for feeding a series of wires to be galvanized, arranged to drive said series of wires from a series of wire sources and feed the wires to be galvanized, each feeding means of said series of wire feeding means being independent or synchronized, b. A galvanizing bath arranged to contain at least one molten galvanizing metal, said galvanizing bath being provided with heating means and fed by said series of means for feeding in series wires to be galvanized, said galvanizing bath being arranged to form a series of galvanized wires, c. At least one first guiding means arranged to guide the wires of the series of galvanized wires out of the bath and put them in the wiping position, d. A series of gas wiping die systems for a galvanizing line containing a galvanizing bath,preferably nitrogen galvanized wires comprising a body provided with a first and a second block, said first block comprising a through orifice defining a first part of a wiping light, and said second block comprising a through orifice defining a second part of a wiping light, said first block having an annular trench arranged around said through orifice of said first block as well as a hollow channel terminating on the one hand in an external wall of said first block and on the other hand in said annular trench,said first block and said second block being arranged to be positioned in a juxtaposed position such that the through-orifice of the first block and the through-orifice of the second block are aligned together to form a wiping lumen formed of said first portion of the wiping lumen and the second portion of the wiping lumen and such that said second block closes said annular trench to form a receiving chamber for said gas and closes said recessed channel to form a gas supply tube for the wiping die, said receiving chamber being in fluid communication with said wiping lumen by fluid communication means, said first block and said second block being arranged to be held in a juxtaposed position by a fixing means and to be connected to a vertical wall of a galvanizing line via a mounting plate, above a galvanizing bath,characterized in that said mounting plate is connected to the vertical wall of said galvanizing line by means of a fixing system comprising means for adjusting the height at which the die is fixed above the galvanizing bath, each wiping die system being arranged to wipe a wire of the series of galvanized wires by passing through a wiping lumen in a running direction, said wiping lumen being furthermore traversed by a wiping gas having a wiping direction different from the running direction, e. At least one second guide means, arranged to guide the wires of the series of wiped wires towards a wire collection step.

[0067] For the purposes of the present invention, the step of guiding the wires of the series of wiped wires to a wire collection step means that between the wiping and the collection of the galvanized wire, one or more intermediate steps may be present. It is thus possible to provide a second galvanization identical to or different from the first, a heat treatment, a finishing treatment, physical, chemical or physicochemical, drying, winding of the wire, and the like...

[0068] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said fluid communication means is formed of a peripheral slot to the wiping light which extends between the wiping gas receiving chamber and the wiping light and thus allows the formation of a blade of wiping gas.

[0069] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanizing galvanized wires, in which said peripheral slot is inclined downwards by an angle of between 20 and 40°, more particularly between 25 and 35°, even more particularly between 27° and 32° relative to a plane perpendicular to a direction of travel of the galvanized wires.

[0070] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said wiping light is cylindrical in shape and has a constant diameter d over a height h of between 80 and 100% of a height H of the body of the wiping die, preferably between 85 and 95% of said height H, more particularly between 90 and 95% of said height H.

[0071] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said wiping light has an upper mouth and a lower mouth, said lower mouth being arranged to allow an inlet of galvanized wires and a countercurrent outlet of said wiping gas and said upper mouth being arranged to allow an outlet of wiped galvanized wires and of the wiping gas in a co-current manner, said upper mouth extending over a predetermined height h1 between an end linked to said light of constant diameter and a free end forming an outlet made in the external face of said die body and has over this height h1 an increasing diameter going from the diameter d to a diameter D1 which is the diameter of the outlet,said lower mouth extending over a predetermined height h2 between an end linked to said light of constant diameter and a free end forming an outlet made in the external face of said die body and has over this height h2 an increasing diameter going from diameter d to a diameter D2 which is the diameter of the outlet, with D2>D1.,

[0072] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said lower mouth has a first part extending over a predetermined height h3 juxtaposed with said constant diameter light which has over this height h3 an increasing diameter going from diameter d to a diameter D2 and a second part extending over a predetermined height h4, juxtaposed with said first part, which has over this height h4 said diameter D2.

[0073] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said first block has a periphery and said second block has a periphery complementary to the periphery of said first block.

[0074] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said peripheral slot extends over a distance between said chamber for receiving said wiping gas and said wiping light of between 1 and 4 mm.

[0075] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said peripheral slot has a height forming a thickness of said wiping gas blade of between 0.3 and 0.5 mm, more particularly between 0.35 and 0.45 mm and more particularly approximately 0.4 mm.

[0076] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen-based galvanized wires, in which said chamber for receiving said wiping gas has a volume of between 1.2 and 8 cm 3< , more particularly between 1.35 and 7 cm 3< , and preferably between 1.5 and 6 cm 3< .

[0077] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said chamber for receiving said wiping gas and said wiping light are spaced apart by a distance of between 1 and 4 mm.

[0078] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said height adjustment means at which the die is fixed above the galvanizing bath are chosen from a fixing lug with orifices allowing said wiping die to be fixed at different heights above said galvanizing bath, a notched guide rail in which a guide fixed to said wiping die slides, a rack system allowing the height of the wiping die to be adjusted above the galvanizing bath, and the like, said adjustment means being arranged to allow said wiping die to be fixed at a height such that said peripheral slot is located at a height of between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4,5 and 11 cm relative to an upper surface of the molten metal bed, corresponding to an adjustable distance X.,

[0079] Advantageously, the galvanizing line comprises a gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said height adjustment means to which the die is fixed above the galvanizing bath are arranged to allow contact between the wiping gas blade and said running wire at a height of between 2.5 and 19.5 cm, more particularly between 3.5 and 14.5 cm, even more particularly between 4 and 10.5 cm.

[0080] Advantageously, the galvanizing line comprises a galvanizing line gas wiper die system containing a galvanizing bath, preferably nitrogen galvanized wires, in which a clamping system is provided which comprises said mounting plate, preferably a back mounting plate which is connected to said vertical wall of the galvanizing line via said fastening system.

[0081] Advantageously, the galvanizing line comprises a gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires, in which said fixing system further comprises a set of bolted rods.

[0082] Advantageously, the galvanizing line comprises a galvanizing line gas wiper die system containing a galvanizing bath, preferably nitrogen galvanized wires, in which a portion of the bolted rods is arranged to assemble said back mounting plate to said height adjustment means and another portion of which allows said height adjustment means to be assembled to said vertical wall of the galvanizing line.

[0083] Advantageously, the galvanizing line comprises a galvanizing line gas wiping die system containing a galvanizing bath, preferably nitrogen galvanized wires, wherein said fixing system further comprises a compressible element disposed between the back mounting plate and said height adjustment means.

[0084] Other embodiments of the galvanizing line according to the invention are indicated in the appended claims.

[0085] Other characteristics, details and advantages of the invention will emerge from the description given below, without limitation and with reference to the drawings.

[0086] In the drawings, the figure 1 is a sectional view of the wiping die system according to the present invention. There figure 2 is a perspective view of the die body of the wiper die system of the figure 1 . THE figures 3a And 3b are perspective views of the system presented in the figure 1 in which the blocks of the body of the wiping die are shown in exploded view. The figures 4A à 4E are sectional views of various embodiments of the wiping die body according to the present invention. figure 5 is a perspective view of part of a galvanizing line where the wiping die system according to the invention can be seen integrated on a galvanizing bath.

[0087] In the figures, identical or similar elements have the same reference numbers.

[0088] As indicated above, the present invention aims to provide a galvanizing process making it possible to maintain a constant coating quality, which does not depend on the diameter of the wire to be treated, coping with increasingly high running speeds while providing the flexibility required for production.

[0089] Thus, the method according to the invention is a method for galvanizing high-speed moving wires which comprises feeding a bath containing at least one molten metal for galvanizing a series of moving wires where each wire in the series has a magnitude Dv of between 140 and 400 mm.m / min. Once galvanized by moving in the galvanizing bath, each of the wires is guided in moving to pass from a galvanizing direction to a wiping direction, typically a vertical direction from bottom to top. Each wire in said series of moving wires thus passes through a wiping die crossed by a blade of wiping gas before being collected, possibly after having undergone other subsequent treatments.

[0090] The wiping in the method according to the present invention is carried out by means of a gas, for example nitrogen, wiping die system as illustrated in figure 1 .

[0091] As can be seen in the figure 1 , the gas wiping die system comprises a die comprising a body 1 provided with a first block 2 and a second block 3. The first block 2 comprises a through-orifice 4 defining a first part of a wiping lumen 5, and the second block 3 also comprises a through-orifice 6 defining a second part of a wiping lumen 5.

[0092] Body 1 is shown in more detail in figure 2 . As can be seen, the first block 2 is formed of a first half-block 7 and a second half-block 8. The first half-block 7 has a part of said through-hole 4 and the second half-block 8 has another part of said through-hole 4. The latter is complementary to the part of the through-hole 4 of said first half-block 7. Thus, once assembled to form the first block 2, that is to say when the first and second half-blocks (7, 8) are juxtaposed to each other (juxtaposition position), the through-hole 4 of said first block 2 is formed.

[0093] The second block 3 is also formed of a first half-block 9 and a second half-block 10. The first half-block 9 has a portion of the through-orifice (not shown) and the second half-block has another portion of said through-orifice (not shown). The latter is complementary to the portion of the through-orifice of said first half-block. Thus, once assembled to form the second block 3, that is to say when the first 9 and the second half-block 10 are juxtaposed to each other (juxtaposition position), the through-orifice 6 of said second block 3 is formed. The through-orifice 4 of the first block 2 and the through-orifice 6 of the second block 3 together form the wiping lumen 5 of the die.In other words, the first block 2 and the second block 3 are arranged to be positioned in a juxtaposed (superimposed) position such that the through-orifice 4 of the first block 2 and the through-orifice 6 of the second block 3 are aligned together to form a wiping light 5 formed from said first part of the wiping light and said second part of the wiping light.

[0094] Now returning to the figure 1 , the first block 2 of the wiping die comprises an annular trench 11 arranged around the through orifice 4 of the first block 2 and a hollow channel 12 terminating on the one hand in an external wall 13 of the first block 2 and on the other hand in said annular trench 11.

[0095] When the first 2 and the second block 3 are superimposed so as to form the wiping light 5, the second block 3 closes said annular trench 11 to form a receiving chamber for the wiping gas and closes said hollow channel 12 to form a tube for supplying wiping gas to the wiping die. The receiving chamber is in fluid communication via a peripheral slot 20 with the wiping light 5 by fluid communication means.

[0096] The peripheral slot 20 is arranged between the receiving chamber and the wiping light over a distance F, and allows the formation of a blade of wiping gas directed from the periphery of the wiping light 5 towards a central axis of said wiping light 5 and preferably from the entire periphery of the wiping light 5 towards said central axis, more particularly oriented at an angle α downwards, measured relative to a plane perpendicular P to said wiping direction.

[0097] The second block 3 and the first block 2 are held in a juxtaposed (superimposed) position by a fixing means 14 (see figure 2 ), such as by a series of screws and are connected to a vertical wall 16 of a galvanizing line via a mounting plate 15 above a galvanizing bath.

[0098] The mounting plate 15 is preferably a back mounting plate which is connected to the vertical wall 16 of said galvanizing line by means of a fixing system comprising height adjustment means 17, 18 at which the die is fixed above the galvanizing bath.

[0099] In the embodiment illustrated in figure 1 , a clamping system 19 is provided which comprises said back mounting plate 15 which is connected to said vertical wall 16 of the galvanizing line via the fixing system.

[0100] The clamping system is for example that described in document CN109666880, as well as its operation, incorporated by reference in the present patent application.

[0101] In the illustrated embodiment, the first block 2 of the wiping die comprises an annular trench 11 arranged around the through-orifice 4 of said first block 2. The annular trench 11 may be formed by bringing together said first 7 and second half-blocks 8 forming the first block 2. In other words, a part of the annular trench may be present in the first half-block 7 and another part, complementary to the part of the annular trench of the first half-block 7, is present in the second half-block 8.

[0102] The clamping system 19 also holds the half-blocks 7, 8 in a juxtaposed position. The fact of using a first and / or second block 2, 3 in several parts (at least two), to form the wiping die makes it possible, in the event of excessive projection, to replace only one half-block, but above all makes it possible not to have to remove the wire running from the galvanizing line when a part is to be replaced.

[0103] The height adjustment means 17, 18 to which the die is fixed above the galvanizing bath are formed in the illustrated embodiment by a fixing lug 17 with orifices 18 allowing said wiping die to be fixed at different heights above the galvanizing bath. The height adjustment means 17, 18 are arranged and dimensioned to allow said wiping die to be fixed at a height such that said peripheral slot 20 is located at an adjustable distance X of between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4.5 and 11 cm relative to an upper surface of the molten metal bed 21.

[0104] Preferably, said fixing system further comprises a set of bolted rods 22.

[0105] More particularly still, according to the present invention, a part of the bolted rods 22 is arranged to assemble said back mounting plate 15 to said height adjustment means 17, 18 and another part of which makes it possible to assemble said height adjustment means to said vertical wall 16 of the galvanizing line.

[0106] Particularly preferably, according to the present invention, said fixing system further comprises a compressible element 23 arranged between the dorsal mounting plate 15 of the clamping system 19 and said height adjustment means 17, 18.

[0107] As can be seen elsewhere in more detail on the figures 3a And 3b, which are perspective views of the clamping system and the die block, certain elements have been removed to allow better visualization, in particular half-blocks. The fixing lug 17 is also indicated and comprises a substantially rectilinear upper part and an equally rectilinear lower part, as well as an intermediate part which is oblique to facilitate access. It can also be seen in these figures that the second block 3 or the first 9 and second half-blocks 10 forming the second block 3 are provided with lateral shoulders which facilitate fitting into the clamping system 19. The clamping system 19 can, in a variant according to the present invention, hold the two first half-blocks 7, 9 superimposed on each other as well as the two second half-blocks 8, 10 superimposed on each other, or the first 2 and the second block 3 superimposed on each other.

[0108] On the figures 3a And 3b, it can also be seen that, according to a particular embodiment, said fixing lug 17 with orifices 18 is chosen as height adjustment means 17, 18 to which the wiping die is fixed above the galvanizing bath 28.

[0109] Preferably, as can be seen on the figure 3a , said fixing lug 17 with orifices 18 is a fixing lug comprising a downwardly oriented longitudinal orifice in which bolted rods 22 can move vertically, making it possible to fix said wiping die at different heights above said galvanizing bath 28.

[0110] Alternatively, as can be seen on the figure 3b , said fixing lug 17 with orifices 18 is a fixing lug comprising a plurality of orifices in which bolted rods 22 are engaged at a desired height, making it possible to fix said wiping die at different heights above said galvanizing bath 22.

[0111] The said longitudinal orifice has the advantage of allowing the height to be adjusted continuously, without having to be limited to staggered positions, thus offering great flexibility to precisely choose the height of the die within the limits of the longitudinal orifice.

[0112] THE figures 4A à 4E show different internal geometries of the body 1 of the die. Thus, for wires of 14 to 22 mm in diameter or more, a wider wiping light 5 will be used ( figure 4A et 4C ), while the feed tube will be shorter or the wiping gas receiving chamber will be more restricted. For wires between 6 and 10 mm in diameter, geometries such as those illustrated in figures 4B, 4D ou 4E .

[0113] On the figures 4A à 4E , we can also see different geometries of the fluid communication means, formed of a peripheral slot 20 in the wiping light 5 which extends between the wiping gas reception chamber and the wiping light 5. This peripheral slot 20 thus allows the formation of a blade of wiping gas.

[0114] In the embodiment illustrated in figure 4D , said peripheral slot 20 is inclined downwards at an angle of between 20 and 40°, more particularly between 25 and 35°, even more particularly between 27° and 32° relative to a plane perpendicular to a direction of travel of the galvanized wires.

[0115] The peripheral slot 20 has an upper wall formed by a part of an outer face of said first block 2, which is formed by a part of an outer face of the first half-block 7 and of the second half-block 8. The peripheral slot 20 has a lower wall formed by a part of an outer face of said second block 3, which is formed by a part of an outer face of the first half-block 9 and of the second half-block 10.

[0116] The wiping light is cylindrical in shape and has a constant diameter d over a height h of between 80 and 100% of a height H of the body 1 of the wiping die, preferably between 85 and 95% of said height H, more particularly between 90 and 95% of said height H.

[0117] More particularly, according to the present invention, said wiping light has an upper mouth 24 and a lower mouth 25, each preferably ending in the ambient environment.

[0118] The lower mouth 25 is arranged to allow an inlet of galvanized wires and a countercurrent outlet of said wiping gas and said upper mouth 24 is arranged to allow an outlet of wiped galvanized wires and of the wiping gas in a cocurrent manner.

[0119] The upper mouth 24 extending over a predetermined height h1 between an end linked to said wiping light 5 of constant diameter d and a free end forming an outlet made in the external face 26 of said die body 1 and has over this height h1 an increasing diameter going from the diameter d to a diameter D1 which is the diameter of the outlet.

[0120] The lower mouth 25 extending over a predetermined height h2 between an end linked to said wiping light 5 of constant diameter d and a free end forming an outlet made in the external face 27 of said die body 1 and has over this height h2 an increasing diameter going from the diameter d to a diameter D2 which is the diameter of the outlet, with D2>D1.

[0121] In certain variants, said lower mouth 25 has a first part extending over a predetermined height h3 juxtaposed with said wiping light 5 of constant diameter d which has over this height h3 an increasing diameter going from diameter d to a diameter D2 and a second part extending over a predetermined height h4, juxtaposed with said first part, which has over this height h4 said diameter D2.

[0122] On the figures 4A à 4E , the upper mouth 24 has a wall which is formed by a part of an outer face of said first 7 and said second half-block 8 forming the first block 2 of the wiping die. The lower mouth 25 has a wall which is formed by a part of an outer face of said first half-block 9 and said second half-block 10 forming the second block 3 of the wiping die.

[0123] To the figure 5 , a part of a galvanizing line can be seen in which the galvanizing bath 28 is located below the wiping die system. The guide means arranged to guide the wires of the series of galvanized wires out of the bath and into the wiping position is a guide shoe 29. A series of wiping die systems, according to the embodiment illustrated in figure 3a, is present and each wiping die system being arranged to wipe a wire 30 of the series of galvanized wires by passing through a wiping light 5 in a running direction.

[0124] It is understood that the present invention is in no way limited to the embodiments described above and that many modifications may be made thereto without departing from the scope of the appended claims.

Claims

1. Method for galvanizing wires in high-speed scrolling mode, comprising: (i) A supply of a galvanizing bath (28) comprising at least one bed of molten metal (21), preferably containing at least zinc, by a series of scrolling wires where each wire (30) of the series has a size Dv of between 140 and 400 mm.m / min, (ii) Galvanizing by scrolling each of the wires (30) of said series of wires through said galvanizing bath (28), (iii) Guiding each of the wires (30) of said series of wires in scrolling from a galvanizing direction to a wiping direction, (iv) Wiping each wire (30) of said series of wires in scrolling by passing through a wiping light (5) of a wiping die, said wiping light (5) being crossed by a blade of wiping gas, preferably by a blade of nitrogen, emerging from a peripheral slot (20) to said wiping light (5) at a wiping gas flow rate of between 0.6 and 9 m. 3 / hour, more particularly between 1 and 6 m 3 / hour, said peripheral slot (20) being positioned at an adjustable distance X relative to the bed of molten metal (21) of between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4.5 and 11 cm, (v) Guiding each of the wires (30) of said series of wires moving towards a collection device.

2. Method for galvanizing wires in high-speed scrolling according to claim 1, wherein said gas blade is directed from the periphery of the wiping light (5) towards a central axis of said wiping light (5) and preferably from the entire periphery of the wiping light (5) towards said central axis, more particularly oriented at an angle α of between 20 and 40°, more particularly between 25 and 35°, even more particularly 27° and 32° downwards, measured relative to a plane perpendicular P to said wiping direction.

3. Gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires comprising a body (1) provided with a first (2) and a second block (3), said first block (2) comprising a through-orifice (4) defining a first part of a wiping light, and said second block (3) comprising a through-orifice (6) defining a second part of a wiping light, said first block (2) having an annular trench (11) arranged around said through-orifice (4) of said first block (2) as well as a hollow channel (12) terminating on the one hand in an outer wall of said first block (13) and on the other hand in said annular trench (11),said first block (2) and said second block (3) being arranged to be positioned in a juxtaposed position such that the through-orifice (4) of the first block (2) and the through-orifice (6) of the second block (3) are aligned together to form a wiping lumen (5) formed of said first part of the wiping lumen and the second part of the wiping lumen and such that said second block (3) closes said annular trench (11) to form a receiving chamber for said gas and closes said hollow channel (12) to form a gas supply tube for the wiping die, said receiving chamber being in fluid communication with said wiping lumen (5) by fluid communication means,said first block (2) and said second block (3) being arranged to be held in a juxtaposed position by a fixing means (14) and to be connected to a vertical wall (16) of a galvanizing line via a mounting plate (15), above a galvanizing bath (28), , characterized in that said mounting plate (15) is connected to the vertical wall (16) of said galvanizing line by means of a fixing system comprising means for adjusting the height (17, 18) at which the die is fixed above the galvanizing bath (28).

4. Gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to claim 3, wherein said fluid communication means is formed of a peripheral slot (20) to the wiping light (5) which extends between the wiping gas receiving chamber and the wiping light (5) and thus allows the formation of a blade of wiping gas, said peripheral slot (20) being preferably inclined downwards by an angle α of between 20 and 40°, more particularly between 25 and 35°, even more particularly between 27° and 32° relative to a plane perpendicular P to a direction of travel of the galvanized wires (30).

5. Gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to any one of claims 3 or 4, wherein said wiping light (5) is cylindrical in shape and has a constant diameter d over a height h of between 80 and 100% of a height H of the body of the wiping die, preferably between 85 and 95% of said height H, more particularly between 90 and 95% of said height H.

6. Gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to any one of claims 3 to 5, wherein said wiping light (5) has an upper mouth (24) and a lower mouth (25), said lower mouth (25) being arranged to allow an inlet of galvanized wires (30) and a countercurrent outlet of said wiping gas and said upper mouth (24) being arranged to allow an outlet of wiped galvanized wires (30) and of the wiping gas in a co-current manner, said upper mouth (24) extending over a predetermined height h1 between an end connected to said light (5) of constant diameter and a free end forming an outlet made in the external face (26) of said die body (1) and has over this height h1 a increasing diameter going from diameter d to a diameter D1 which is the diameter of the outlet,said lower mouth (25) extending over a predetermined height h2 between an end linked to said light (5) of constant diameter and a free end forming an outlet made in the external face (27) of said die body (1) and has over this height h2 an increasing diameter going from the diameter d to a diameter D2 which is the diameter of the outlet, with D2>D1., 7. Gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to claim 6, wherein said lower mouth (25) has a first part extending over a predetermined height h3 juxtaposed to said light (5) of constant diameter which has over this height h3 an increasing diameter going from diameter d to a diameter D2 and a second part extending over a predetermined height h4, juxtaposed to said first part which has over this height h4 said diameter D2.

8. Gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to any one of claims 3 to 7, wherein said first block (2) has a periphery and said second block (3) has a periphery complementary to the periphery of said first block.

9. Gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to any one of claims 4 or 5 to 8 when dependent on claim 4, wherein said peripheral slot (20) extends over a distance F between said chamber for receiving said wiping gas and said wiping light (5) of between 1 and 4 mm or wherein said peripheral slot (20) has a height forming a thickness of said wiping gas blade of between 0.3 and 0.5 mm, more particularly between 0.35 and 0.45 mm and more particularly about 0.4 mm.

10. Gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to any one of claims 3 to 9, wherein said chamber for receiving said wiping gas has a volume of between 1.2 and 8 cm 3, more particularly between 1.35 and 7 cm 3 , and preferably between 1.5 and 6 cm 3 or wherein said receiving chamber for said wiping gas and said wiping light (5) are spaced apart by a distance of between 1 and 4 mm.

11. Gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wire according to any one of claims 3 to 10, wherein the galvanizing bath (28) is arranged to contain a molten metal bed (21) provided with a molten metal bed upper surface (21) and said height adjustment means (17, 18) to which the die is fixed above the galvanizing bath (28) are chosen from a fixing lug (17) with holes (18) for fixing said wiping die at different heights above said galvanizing bath (28), a notched guide rail in which slides a guide fixed to said wiping die, a rack system for adjusting the height of the wiping die above the galvanizing bath, and the like, said means adjustment (17,18) being arranged to allow fixing of said wiping die at a height such that said peripheral slot (20) is located at a height of between 3 and 20 cm, more particularly between 4 and 15 cm, and even more preferably between 4.5 and 11 cm relative to the upper surface of the molten metal bed (21), corresponding to an adjustable distance X., 12. Gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to any one of claims 3 to 11, wherein said height adjustment means (17, 18) at which the die is fixed above the galvanizing bath (28) are arranged to allow contact between the wiping gas blade and said running wire (30) at a height of between 2.5 and 19.5 cm, more particularly between 3.5 and 14.5 cm, even more particularly between 4 and 10.5 cm.

13. Gas wiping die system for galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to any one of claims 3 to 12, wherein a clamping system (19) is provided which comprises said mounting plate (15), preferably a back mounting plate (15) which is connected to said vertical wall (16) of the galvanizing line via said fixing system.

14. Gas wiping die system for a galvanizing line containing a galvanizing bath, preferably nitrogen galvanized wires according to any one of claims 3 to 13, wherein said fastening system further comprises a set of bolted rods (22), preferably in which a part of the bolted rods (22) is arranged to assemble said back mounting plate (15) to said height adjustment means (17, 18) and another part of which allows said height adjustment means (17, 18) to be assembled to said vertical wall (16) of the galvanizing line, said fastening system further comprising, preferably, a compressible element (23) arranged between the back mounting plate (15) and said height adjustment means (17, 18).

15. Galvanizing line comprising: a. A series of means for feeding a series of wires to be galvanized, arranged to drive said series of wires from a series of wire sources and feed the wires to be galvanized, each feeding means of said series of wire feeding means being independent or synchronized, b. A galvanizing bath (28) arranged to contain at least one molten galvanizing metal, said galvanizing bath being provided with heating means and fed by said series of means for feeding in series wires to be galvanized, said galvanizing bath (28) being arranged to form a series of galvanized wires, c. At least one first guiding means arranged to guide the wires (30) of the series of galvanized wires out of the bath (28) and put them in the wiping position, d.A series of wiping die systems according to any one of claims 3 to 14, each wiping die system being arranged to wipe a wire (30) of the series of galvanized wires by passing through a wiping lumen (5) in a running direction, said wiping lumen (5) being furthermore traversed by a wiping gas having a wiping direction different from the running direction, e. At least one second guide means, arranged to guide the wires (30) of the series of wiped wires towards a wire collection step.

Images