HYBRID HEATING GALVANIZING DEVICE

Description

2 Indeed, when wires or ribbons are to be galvanized, they are passed through the bath. When the treatment is intended for parts, these parts are placed in a basket which is either immersed in the bath or passed through it. The basket is then removed from the bath and wrung out to remove excess zinc from the parts. 5 There are two types of baths for galvanizing metal parts: metal baths and ceramic baths. The need to be able to increase the temperature up to 600°C necessitates the use of a ceramic bath, which is more heat-resistant. Furthermore, to ensure optimal control of the bath temperature in a precise manner and maintain the quality of the coating, modern galvanizing baths are often equipped with means of regulation and adjustment to continuously regulate the heating elements. In addition, some galvanizing devices use a different bath temperature depending on the type of product to be galvanized. Temperature regulation is also very critical and important in this case. Thus,To heat a ceramic galvanizing bath and to keep the zinc molten, immersion heaters with burners are used as heating elements. The immersion heaters are often placed directly in the galvanizing bath for direct and efficient heating. These heating elements generally use fuel sources such as natural gas, biogas, or fuel oil.20 However, access to these fuel sources is not guaranteed; they may be expensive or unavailable when needed. Furthermore, the CO2 emissions associated with these fuel sources are harmful to the environment and contribute to climate change, not to mention that they increase the company's carbon footprint in an industry where the energy transition25 is very complex. The wires,The ribbons or parts arrive cold in the galvanizing bath and carry with them some of the thermal energy contained in the bath. Immersion heaters equipped with heating elements in a sheath are also known for heating a liquid metal bath (see, for example, FR3147963A1).30 Furthermore, in the case of the production of galvanized wires for welding ribbons, in order to maximize production, the flow rate of these ribbons in the production lines, and therefore also in the galvanizing lines, must constantly increase. BE2024 / 5902 3 These increases imply a higher flow rate of wires for welding ribbons through the galvanizing bath. These increased flow rates can be compensated for by lengthening the galvanizing bath to maintain a certain residence time for galvanizing. Indeed, a greater bath length would allow for the addition of five more heating elements within the bath, and would also increase its thermal inertia due to a galvanizing bath containing a larger volume of molten metal. However,This lengthening of the galvanizing bath could potentially pose space problems, particularly in terms of the space required for installation and integration into existing infrastructure.10 Furthermore, increasing the flow rate of wires or ribbons moving through the galvanizing bath accelerates its cooling. The wires or ribbons typically enter at a temperature lower than the temperature of the molten metal bath but also move at high speed and carry with them some of the thermal energy of the molten metal bath. Currently, the wires move with a magnitude D.v15 between 100 and 400 mm.m / min, where D.v is the product of a diameter D and a speed v, and the ribbons move with a speed v between 5 and 30 m / min. The accelerated cooling must also be compensated for by an increase in heating power (either by using more numerous, larger, or more efficient heating elements, for example). In a galvanizing bath,There is a treatment zone that extends primarily the length of the bath. The treatment zone has a narrower width than the bath in order to leave a bordering zone on either side of the treatment zone, typically in which the heating elements are located, more particularly the immersion heaters. In a galvanizing bath for moving parts, there is a treatment zone that extends within the bath in a direction of movement. The treatment zone has a narrower width than the bath in order to leave a bordering zone on either side of the treatment zone, typically in which the heating elements are located, more particularly the immersion heaters. This treatment zone, which extends the entire length of the galvanizing bath, means that no obstacle can be placed within it, as this could compromise the galvanizing process (BE2024 / 5902 4), namely, the immersion of parts or the movement of wires, ribbons, or parts. Therefore, the heating elements must be located in the bordering zone on both sides of the wire treatment area.Strips or pieces are placed along the walls of the galvanizing bath, without extending into the said zone or into a dedicated area somewhere in the center of the bath. In this case, the five immersion heaters are located in the center, and the treatment zone is located to the left and right of the immersion heaters. The space allocated to the heating elements is therefore restricted, and increasing the number of heating elements in this zone is limited by the available space but also by the heat radiation from the immersion heater. Indeed, in the case of burner immersion heaters, elements that are too close together lead to the formation of overheating zones that are detrimental to the galvanizing process and / or its energy efficiency. Furthermore, a galvanizing device comprising only burner heating elements can only contain a certain number as described above. In the case of elements to be galvanized, if the flow rate in the galvanizing bath increases, their flow rate also increases and they will carry away a larger portion of the thermal energy contained in the bath. Similarly,If the number of parts immersed in the galvanizing bath for a given time increases, there will be a greater loss of the thermal energy contained in the bath. This leads to a decrease in the temperature of the molten metal in the galvanizing bath because temperature regulation is no longer sufficiently ensured by the burner heating elements. In order to properly regulate the temperature, the number of burner heating elements would need to be increased. As explained previously, since these cannot be too close to each other, the size of the galvanizing bath would therefore need to be increased, which is hardly feasible due to space or cost constraints. In the case of parts immersed in the galvanizing bath, the temperature of the molten metal in the bath must be at an optimal level to ensure high-quality galvanizing. The immersion time depends, among other things, on the complexity of the parts. In order to maximize the output of this step, it is essential that the bath temperature remains constant and at all times. As can be understood,Adapting galvanizing to a line where production speeds for galvanizing must increase requires working on a very fine balance which is complex to control. BE2024 / 5902 5 The invention aims to address these technological challenges and to overcome at least partially the disadvantages mentioned above by providing a compact galvanizing device allowing to maintain a constant coating quality for wires, ribbons or parts to be galvanized ever more quickly. The invention aims to overcome the aforementioned drawbacks by providing a galvanizing device as described above, comprising a ceramic bath filled with zinc-based molten metal for elements to be galvanized, comprising at least one regulating zone, said at least one regulating zone being equipped with at least one means for measuring the temperature in contact with the molten metal of the bath, arranged to measure a bath temperature, and hybrid heating elements arranged to impart a predetermined bath temperature to said molten metal bath.means for regulating the temperature of the molten metal bath arranged to control said hybrid heating elements, said regulating means being connected to said hybrid heating elements so as to activate said hybrid heating elements when the bath temperature is lower than the predetermined bath temperature, said hybrid heating elements comprising a series of burner heating elements and a series of electric heating elements, said regulating means being arranged to activate at least the heating elements selected from the group consisting of: - one, several or all of the burner heating elements of said series of burner heating elements, or - one, several or all of the electric heating elements of said series of electric heating elements, or - all of the burner heating elements of said series burner heating elements and the set of electric heating elements of 25 said series of electric heating elements,or -one or more of the burner heating elements of said series of burner heating elements and all the electric heating elements of said series of electric heating elements, or -all the burner heating elements of said series 30 of burner heating elements and one or more of the electric heating elements of said series of electric heating elements, or BE2024 / 5902 6 -one or more of the burner heating elements of said series of burner heating elements and one or more of the electric heating elements of said series of electric heating elements. As can be seen, the device according to the present invention comprises a bath filled with zinc-based molten metal in which elements to be galvanized, such as wires, ribbons, or parts, are galvanized. The bath comprises at least one regulating zone which is provided with at least one means for measuring the bath temperature, to raise the temperature of the molten metal in said zone. When the bath temperature is too low compared to the predetermined bath temperature,The heating elements are activated via the temperature regulation means 10. According to the present invention, it has appeared that the presence of hybrid heating elements, i.e. burner heating elements and electric heating elements, makes it possible to increase the heating power of the galvanizing bath so as to compensate for the cooling linked to the increase in speeds 15 of production of galvanizing wires, ribbons or parts to be galvanized without having to lengthen the bath and without creating a penalizing overheating zone in the molten metal bath. Furthermore, according to the present invention, the control means are designed to selectively activate the burner heating elements and the electric heating elements, thus allowing the user to choose between these heating elements, partially or entirely, to reach the predetermined bath temperature. This hybridization allows the user to choose which hybrid heating element to use in full or as a priority according to various constraints such as the price of gas, the price of electricity, the availability of gas, the availability of electricity,the factor (tariff, 25 availability, presence of photovoltaic system,…) day / night, energy storage capacity and CO2 emissions and offers flexibility to compensate for cooling linked to increasing galvanizing production speeds. Thanks to this flexibility, the hybrid heating galvanizing device dynamically adjusts its energy sources in response to fluctuations in various constraints. For example, when gas prices are high, the system prioritizes the use of electric heating elements to reduce costs. Conversely, during periods of rising electricity prices, burner heating elements are used primarily to minimize costs. This adaptability not only optimizes costs but also responds to environmental constraints by providing less polluting energy options. Indeed, the use of cheaper electrical power can come from renewable energy sources, such as solar energy. In the galvanizing device according to the present invention,The combination of burner heating elements with electric heating elements allows for the introduction of a greater quantity of thermal energy into the molten metal-filled galvanizing bath without increasing the bath size. This hybrid system maintains the galvanizing bath temperature within the necessary range to ensure that the metal remains molten, at the required temperature, and is ready to adhere uniformly to the wires, tapes, or parts being galvanized. This compact galvanizing system thus allows for consistent coating quality for galvanized components at ever-increasing production speeds. Indeed, even as the production speeds for galvanizing wires, tapes, or parts increase, the combination of burner heating elements and electric heating elements compensates for energy losses. thermal effects due to the larger volume of cold elements introduced into the bath,and also to correctly regulate the temperature of the molten metal and maintain it within the temperature range necessary to produce high-quality galvanized wires, tapes, or parts. This hybrid approach also offers an alternative in case of failure of one of the energy sources. For example, in the event of a power outage or gas supply problems, the other heating element takes over, thus ensuring continuity of production without significant interruption. In addition, the ability to distribute the thermal energy to be supplied between the hybrid heating elements makes it possible to extend the service life of the burner heating elements and the electric heating elements, thus reducing maintenance costs and downtime. Advantageously, said at least one means for measuring temperature 30 comprises a thermocouple with cold junction compensation (CP), connected to said control means, which are PID controllers adjusting the power of the hybrid heating elements according to the desired temperature. BE2024 / 5902 8 Advantageously,Each hybrid heating element includes means for adjusting operational power, and said control means are arranged to control the means for adjusting operational power so as to increase said operational power of at least one hybrid heating element when the bath temperature is lower than the predetermined bath temperature. Indeed, the means for adjusting operational power, controlled by the control means, allow for precise adjustment of the operational power supplied by the hybrid heating elements, ensuring regulation of the galvanizing bath temperature adapted to the circumstances of the present moment. In the case where the bath temperature is lower than the predetermined bath temperature,The control means instruct the adjustment means to increase the operating power of at least one hybrid heating element to bridge the temperature difference. This makes it possible to supply the necessary amount of thermal energy for the bath temperature to reach the predetermined bath temperature 15 and to ensure that the wires, tapes, or parts exiting the galvanizing bath have a sufficient coating quality, avoiding overheating of the galvanizing bath and energy waste. More advantageously, said operating power adjustment means have a minimum operating power and a maximum operating power 20, said operating power being between the minimum and maximum operating power. Indeed,Adjusting the operating power of the hybrid heating elements using adjustment means within a range from minimum to maximum operating power allows for effective regulation of the galvanizing bath temperature. Thus, the adjustment means will precisely adjust the operating power of the hybrid heating elements so that the bath temperature reaches the predetermined bath temperature without supplying more thermal energy than necessary. For example, it is possible to adjust the operating power of the burner heating elements and the operating power of the electric heating elements in different ways: 10% for the burner heating elements and 100% for the electric heating elements, or 90% for the burner heating elements and 0% for the electric heating elements. BE2024 / 5902 9 electric heating, or even 0% for burner heating elements and 30% for electric heating elements. Even more advantageously,said means of adjusting operational power present an operational power equivalent to the minimum operational power or an operational power equivalent to the maximum operational power. This allows all or some of the hybrid heating elements to be switched on or off by switching them from an active mode (maximum operating power) to an inactive mode (minimum operating power). According to the invention, it is thus possible to choose to activate all the hybrid heating elements, or to deactivate them all, or only some. Equally advantageously, said control means are linked to said hybrid heating elements so as to deactivate said hybrid heating elements when the bath temperature is higher than the predetermined bath temperature. Thus, overheating of the molten metal in the galvanizing bath is avoided and the coating of the wires, ribbons, or parts is always of good quality. In a preferred embodiment,The said series of burner heating elements comprises 1 to 25 burner immersion heaters. In a particular embodiment, the said series of burner heating elements comprises 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, or 25 burner immersion heaters. In a particularly preferred embodiment, the said series of electric heating elements comprises 1 to 50 electric immersion heaters. In a particular embodiment, the said series of heating elements 25 with burner is composed of 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49 or 50 electric immersion heaters. Preferably, said immersion heaters with burners are composed of a head fitted with said burner and connected to said regulating means, and a submersible body 30 comprising an outer wall defining a cavity, said cavity being arranged to contain hot combustion gases. BE2024 / 5902 10 Preferably,The said electric immersion heaters are composed of a head connected to the said regulating means and a submersible body comprising an outer wall defining a cavity including a metallic heating element, said outer wall preferably being made of a ceramic material, more particularly silicon carbide, even more preferably SiAlON.5 The advantage of combining burner immersion heaters with electric immersion heaters is to increase the overall efficiency of the hybrid heating elements. Indeed, burner immersion heaters have an efficiency of about 70%, while electric immersion heaters achieve an efficiency greater than 90%. This difference in efficiency is due to the presence of a chimney10 in the structure of the burner immersion heaters, allowing the evacuation of combustion gases. This chimney results in an additional heat loss,Unlike electric immersion heaters, where the only significant heat loss is due to conduction in the unimmersed part of the electric immersion heater, combining these two types of immersion heaters optimizes energy efficiency while reducing overall heat loss. Although the efficiency of electric immersion heaters is higher than that of burner immersion heaters, the cost of electricity generally remains higher than that of gas, making the option of exclusively electric bath heating expensive in the long term. Combining these two types of immersion heaters therefore allows for better energy efficiency while optimizing costs, thus offering an advantageous hybrid solution that reduces overall heat loss while controlling energy expenses. Advantageously, at least two burner heating elements of the said 25 series of burner heating elements, more particularly more than two burner heating elements of the said series of burner heating elements,are spaced at a distance of between 25 cm and 75 cm, preferably between 35 cm and 65 cm, and even more preferably between 45 cm and 55 cm. In the case where the burner heating elements are burner immersion heaters, such a distance is measured between each vertical central axis of said burner immersion heaters. BE2024 / 5902 11 Advantageously, said bath comprises four walls substantially parallel in pairs, said bath comprising a treatment zone and said hybrid heating elements, said hybrid heating elements being located in the bath between said treatment zone and said four walls. Advantageously, said treatment zone comprises one or more five sub-treatment zones, each sub-treatment zone comprising said at least one control zone. Indeed, it is advantageous to divide the treatment area into several sub-zones to ensure a homogeneous bath temperature and optimal control of each treatment sub-zone.This allows for more precise temperature control in each sub-zone. The hybrid heating elements are positioned inside the galvanizing bath, within the molten metal, when they are immersion heaters. Preferably, in the galvanizing device according to the invention, the diameter of said burner immersion heaters is between 15 cm and 30 cm. Preferably, in the galvanizing device according to the invention, the diameter of said electric immersion heaters is between 3 cm and 15 cm. In a particular embodiment, said galvanizing device is a galvanizing device for moving parts comprising an inlet for moving parts into the bath and an outlet for moving parts into the bath, between which is said bath filled with molten metal through which said moving parts pass, said moving parts being directed along a direction of movement, said direction of movement going from said inlet for moving parts to said outlet for moving parts. Advantageously,said one or more sub-treatment zones 25 include said flow element outlet comprising at least one control zone comprising means for measuring the temperature in contact with the molten bath metal, arranged to measure a temperature of the molten bath outlet, and in which said control means are arranged to adjust said operating power so as to increase said operating power by at least one hybrid heating element when said bath outlet temperature is less than a predetermined bath outlet temperature. BE2024 / 5902 12 In the event that the bath outlet temperature is lower than the predetermined bath outlet temperature, the control means instruct the adjustment means to increase the operating power of at least one hybrid heating element to compensate for the temperature difference. This makes it possible to supply the amount of thermal energy necessary for the bath temperature to reach the predetermined bath inlet temperature and to ensure that the molten metal does not cool down too much due to the wires.ribbons or parts being drawn out of the galvanizing bath and carrying with them a portion of the bath's thermal energy. Advantageously, said one or more sub-treatment zones include said inlet of drawing elements comprising at least one control zone 10 comprising means for measuring the temperature in contact with the molten metal of the bath, arranged to measure a temperature of the molten metal of the bath inlet, and in which said control means are arranged to adjust said operating power so as to increase said operating power of at least one hybrid heating element when said bath inlet temperature is 15 lower than a predetermined bath inlet temperature. In the case where the bath inlet temperature is lower than the predetermined bath inlet temperature,The control means indicate to the adjustment means to increase the operational power of at least one hybrid heating element to bridge the temperature difference. This makes it possible to supply the amount of thermal energy necessary for the bath inlet temperature to reach the predetermined bath inlet temperature and to ensure that the molten metal does not cool down too much because of wires, ribbons or moving parts entering the galvanizing bath. Advantageously, said one or more sub-treatment zones 25 comprise at least one intermediate zone included in the bath between said inlet of the flowing elements and said outlet of the flowing elements, said at least one intermediate zone comprising at least one regulating zone, said at least one regulating zone comprising means for measuring the temperature in contact with the molten metal of the bath, arranged to measure a temperature of the molten metal 30 of at least one intermediate zone of the bath,and in which said control means are arranged to adjust said operating power so as to increase said operating power of at least one hybrid heating element when said BE2024 / 5902 13 temperature of at least one intermediate bath zone is less than a temperature of at least one predetermined intermediate bath zone. In the event that the temperature of at least one intermediate bath zone is lower than a predetermined temperature of at least one intermediate bath zone, the control means instructs the adjustment means to increase the operating power of at least one hybrid heating element to compensate for the temperature difference. This makes it possible to supply the necessary amount of thermal energy, without energy waste, for the temperature of at least one intermediate bath zone to reach a predetermined temperature of at least one intermediate bath zone and to ensure that the molten metal is homogeneous. Even more advantageously,said exit of the scrolling elements is positioned on a first wall of said four walls, substantially parallel in pairs; said exit of the scrolling elements is positioned on a second wall parallel to said first wall; and a third and a fourth wall are parallel to the direction of scrolling of the scrolling elements; said bath comprising said hybrid heating elements located along the third and / or fourth wall within the bath. Equally advantageously, said bath comprises said hybrid heating elements located in the treatment zone, preferably centrally.in such a way that the moving elements move from one side to the other of said 20 hybrid heating elements. Other embodiments of the hybrid heating device according to the invention are indicated in the attached claims. The invention also relates to a method for regulating the temperature of a galvanizing bath comprising a ceramic bath filled with molten metal at 25°C based on zinc for elements to be galvanized, comprising the steps of: - a measurement of the bath temperature by a means of measuring the temperature in contact with the molten metal of the bath with emission of a signal containing the value of the bath temperature; -a comparison of the bath temperature measured in said galvanizing bath 30 to a bath temperature predetermined by the control means and, if the value of the measured bath temperature is lower than the value BE2024 / 5902 14 of the bath temperature predetermined by the latter, an activation of said hybrid heating elements chosen from the group consisting of: or,several or all of the burner heating elements of said series of burner heating elements, or one, several or all of the electric heating elements of said series of electric heating elements, or one or more of the burner heating elements of said series of burner heating elements and all of the electric heating elements of said series of electric heating elements, or one or more of the burner heating elements of said series of burner heating elements and all of the electric heating elements of said series of electric heating elements, or one or more of the burner heating elements of said series of burner heating elements and one or more of the electric heating elements of said series of electric heating elements. Advantageously, the activation of the hybrid heating elements is an activation(i) of a,of several or all burner heating elements20 using at least one fuel source, or, (ii) of one, several or all electric heating elements using at least one electricity source, or, (iii) of one, several or all burner heating elements using at least one fuel source and one, several or all electric heating elements using at least one electricity source.25 For example, the fuels of the fuel sources may be natural gas, liquefied petroleum gas, coal, fuel oil or biogas, and the electricity sources may be solar, wind, hydro or nuclear. Advantageously, a priority gas mode is included in which: 30 BE2024 / 5902 15 - when the bath temperature measured in said galvanizing bath is lower than the predetermined bath temperature, the control means activate the burner heating elements at an operating power via adjustment means,said operating power being less than or equal to a maximum operating power of the burner heating elements that are activated, and 5 - if said operating power of the burner heating elements is equal to the maximum operating power of said burner heating elements that are activated and if the bath temperature measured in said galvanizing bath is less than the predetermined bath temperature, the control means activate said electric heating elements via said adjustment means, the operating power 10 of said electric heating elements is adjusted by said adjustment means until the bath temperature measured in said galvanizing bath is equivalent to the predetermined bath temperature. Indeed, the priority gas mode is advantageous in several circumstances, for example when the price of gas is low or gas availability is 15 high. In an equally advantageous way,a priority electrical mode is included in which: - when the bath temperature measured in said galvanizing bath is lower than the predetermined bath temperature, the control means activate the 20 electric heating elements at an operating power via adjustment means, said operating power being less than or equal to a maximum operating power of the electric heating elements which are activated, and - if said operating power of the electric heating elements is equal to the maximum operating power of said electric heating elements which are activated and if the bath temperature measured in said galvanizing bath is lower than the predetermined bath temperature, the control means activate said burner heating elements via said adjustment means,The operating power of said burner heating elements is adjusted by said adjustment means until the bath temperature measured in said galvanizing bath is equivalent to the predetermined bath temperature. BE2024 / 5902 16 Indeed, the priority electrical mode is advantageous in several circumstances, for example when the price of electricity is low or the availability of electricity is high. Advantageously, a transition from said priority electrical mode to priority gas mode or a transition from said priority gas mode to priority electrical mode is included in the temperature regulation process of a galvanizing bath according to pre-recorded or predetermined constraints or an external signal from an additional controller, the pre-recorded or predetermined constraints being able to be the price of gas, the price of electricity, the availability of gas, the availability of electricity, the factor (tariff, availability, presence of photovoltaic system, etc.) day / night,Energy storage capacity and CO2 emissions. The switch from said priority electrical mode to priority gas mode or from said priority gas mode to priority electrical mode can be operated automatically or manually. Particularly advantageously, the method for regulating the temperature of a galvanizing bath employs the galvanizing device comprising a ceramic bath filled with zinc-based molten metal for the elements to be galvanized according to the present invention. Other embodiments of the method for regulating the temperature of a galvanizing bath according to the invention are indicated in the attached claims. The invention finally relates to a method for arranging a galvanizing device comprising a ceramic bath filled with molten metal based on zinc for elements to be galvanized comprising at least one regulating zone, said at least one regulating zone being provided with at least one means of measuring the temperature in contact with the molten metal of the bath, arranged to measure a bath temperature,heating elements arranged to impart a predetermined bath temperature to said molten metal bath, said heating elements comprising a series of burner heating elements, means for regulating the temperature of the molten metal bath arranged to control said hybrid heating elements, said regulating means being connected to said heating elements so as to activate said heating elements when the bath temperature is lower than the predetermined bath temperature, characterized in that said BE2024 / 5902 17 modification process comprises a step of adding a series of electric heating elements among said burner heating elements and / or a step of replacing at least one burner heating element of said series of burner heating elements with at least one electric heating element of said series of electric heating elements,a connection of each electric heating element 5 of said series of electric heating elements to the control means via adjustment means and programming of said control means. Other embodiments of the method for setting up a galvanizing device according to the invention are indicated in the attached claims. 10 Other features, details and advantages of the invention will become apparent from the description given below, by way of non-limiting reference and with reference to the drawings and examples. In the drawings, Figure 1 is a perspective view of a galvanizing device comprising a ceramic bath filled with zinc-based molten metal 15 for elements to be galvanized,with a cross-section showing the hybrid heating elements inside the bath. Figure 2 describes the priority gas mode of the temperature control method for a galvanizing bath according to the present invention. Figure 3 describes the priority electrical mode of the temperature control method for a galvanizing bath according to the present invention. Figure 4 describes the switchover from priority gas mode to priority electrical mode according to pre-recorded or pre-determined constraints. Figure 5 describes the switchover from priority electrical mode to priority gas mode according to pre-recorded or pre-determined constraints. In the figures, identical or analogous elements bear the same reference numerals. Figure 1 shows a galvanizing device according to an embodiment of the present invention comprising a ceramic bath 1 filled with zinc-based molten metal for elements to be galvanized, such as wires, ribbons or parts, in which hybrid heating elements 2, 3 are located. In this embodiment,These hybrid heating elements are 4 electric immersion heaters 2 and 6 BE2024 / 5902 18 burner immersion heaters 3. Said hybrid heating elements 2, 3 are designed to impart a predetermined bath temperature to the molten metal bath. The use of hybrid heating elements 2, 3 in the device according to the embodiment of Figure 1 makes it possible to maintain the temperature of the galvanizing bath 1 within the range necessary to guarantee that the metal remains in a molten state, 5 at the desired temperature and that it is ready to adhere uniformly to the wires, tapes or parts to be galvanized, even if the galvanizing production speeds increase. The bath 1 includes at least one regulating zone (not visible in the figure) in which a temperature measuring means is located, in contact with the molten metal contained in the bath 1, allowing the temperature of said molten metal to be measured. The device according to the embodiment of Figure 1 also includes temperature regulating means for the molten metal bath (not visible in the figure) connected to the hybrid heating elements 2.3. Said control means control the hybrid heating elements 2, 3, for example by activating them 15 when the bath temperature is lower than the predetermined bath temperature. In this case, said control means selectively activate the heating elements chosen from the group consisting of: - one, several or all 6 burner heating elements 3, or - one, several or all 4 electric heating elements 2, or - all 6 burner heating elements 3 and all 4 electric heating elements 2, or - one or more of the 6 burner heating elements 3 and all 25 of the 4 electric heating elements 2, or - all 6 burner heating elements 3 and one or more of the 4 electric heating elements 2, or - one or more of the 6 burner heating elements 3 and one or more of the 4 electric heating elements 2. 30 BE2024 / 5902 19 The choice to selectively activate the hybrid heating elements 2, 3 can be made according to various fluctuating constraints such as the price of gas, the price of electricity, the availability of gas,the availability of electricity, the factor (tariff, availability, presence of photovoltaic system,…) day / night, the energy storage capacity and CO2 emissions.5 Still according to the embodiment of figure 1, the said means of measuring temperature includes a thermocouple with cold junction compensation (CP), connected to the said means of regulation, which are PID controllers adjusting the power of the hybrid heating elements 2,3 according to the desired temperature. The hybrid heating elements 2, 3 also include means 10 for adjusting operational power (not visible in the figure), the latter being controlled by the regulating means. This makes it possible to increase the operational power of the hybrid heating elements 2, 3 when the bath temperature is lower than the predetermined bath temperature, or to deactivate all or some of the hybrid heating elements 2,3 when the bath temperature is more than the predetermined bath temperature. Said means for adjusting the operating power have a minimum operating power and a maximum operating power. The operating power of the hybrid heating elements 2, 3 is between the minimum operating power and the maximum operating power, or an operating power equivalent to the minimum operating power, or an operating power equivalent to the maximum operating power. In the embodiment of Figure 1, the immersion heaters with burner 3 consist of a head equipped with a burner and connected to the regulating means and a submersible body comprising an outer wall defining a cavity, the latter being arranged to contain hot combustion gases. The diameter of the immersion heaters with burner 3 is between 15 cm and 30 cm. In this embodiment, to increase / decrease the operational power of burner immersion heaters,Each burner is equipped with a motorized valve allowing the combustion air flow to be regulated. The gas flow is automatically adjusted to the combustion air flow via a pneumatic element called a proportioner. BE2024 / 5902 20 The four electric immersion heaters consist of a head connected to the regulating means and a submersible body comprising an outer wall defining a cavity including a metallic resistance, said outer wall being made of SiAlON. The diameter of the electric immersion heaters is between 3 cm and 15 cm.5 In this embodiment, the operating power of the electric immersion heaters is generally adjusted by means of a thyristor, allowing for modulating and continuous power control, which constitutes the most common operating mode. Alternatively, it is also possible to use a relay for ON / OFF operation.10 In Figure 1, two neighboring three-burner immersion heaters are spaced at a distance of between 25 and 75 cm, preferably between 35 cm and 65 cm.even more preferentially between 45cm and 55cm. This distance is measured between each vertical central axis of said burner immersion heaters 3. Bath 1 has 4 parallel walls 2 to 2 and includes a treatment zone 15 and the hybrid heating elements 2, 3, the latter being located between the treatment zone and the 4 walls of bath 1. The hybrid heating elements 2, 3 being immersion heaters, they are positioned inside the galvanizing bath, in the molten metal. In a particular embodiment, the galvanizing device of Figure 1 is a galvanizing device for moving elements, such as wires or ribbons, comprising an inlet of moving elements into the bath and an outlet of moving elements into the bath, between which is said bath filled with molten metal through which said moving elements pass. The outlet of the moving elements comprises at least a control zone in which temperature measuring means are in contact with the molten metal of the bath.allowing measurement of the temperature of the molten metal at the bath outlet. When the bath outlet temperature is lower than a predetermined bath outlet temperature, the control means increase the operational power of at least one hybrid heating element 2, 3 to increase the 30 temperature of the molten metal at the bath outlet and that it reaches the predetermined bath outlet temperature. BE2024 / 5902 21 The inlet of the spooling elements includes at least one regulating zone in which temperature measuring means are in contact with the molten metal of the bath 1, allowing the temperature of the molten metal at the bath inlet to be measured. When the bath inlet temperature is lower than a predetermined bath inlet temperature, the regulating means increase the operational power 5 of at least one hybrid heating element 2,3 to increase the temperature of the molten metal at the bath inlet until it reaches the predetermined bath inlet temperature. An intermediate zone is also included in the bath 1 between said inlet of the moving elements and said outlet of the moving elements. The intermediate zone 10 includes at least one regulating zone in which temperature measuring means are in contact with the molten metal of the bath 1, allowing the temperature of the molten metal to be measured in at least one intermediate zone of the bath. When the temperature of at least one intermediate bath zone is lower than a predetermined temperature of at least one intermediate bath zone, the means of 15 regulation increase the operational power of at least one hybrid heating element 2, 3 to increase the temperature of the molten metal of at least one intermediate bath zone and that it reaches the temperature of at least one predetermined intermediate bath zone. According to this particular embodiment of Figure 1,The exit of the scrolling elements 20 is positioned on a first wall of the bath 1 and the inlet of the scrolling elements is positioned on a second wall parallel to the first. The third and fourth walls are parallel to the direction of scrolling of the scrolling elements, going from the inlet to the exit of the scrolling elements. The hybrid heating elements 2, 3 are located in the bath along the third and / or the fourth wall. The regulation of the temperature of a galvanizing bath 1 according to the embodiment of Figure 1, implementing the galvanizing device comprising a ceramic bath filled with zinc-based molten metal for elements to be galvanized according to the present invention, comprises the following steps: 30 - a measurement of the temperature of the bath 1 by a temperature measuring means in contact with the molten metal of the bath with emission of a signal containing the value of the bath temperature; BE2024 / 5902 22 - a comparison of the bath temperature measured in the galvanizing bath 1 to a bath temperature predetermined by the regulation means and,if the measured bath temperature value is less than the predetermined bath temperature value, an activation of the hybrid heating elements 2, 3 chosen from the group consisting of: 5 or one, several or all 6 burner heating elements 3, or one, several or all 4 electric heating elements 2, or all 6 burner heating elements 3 and all 10 electric heating elements 2, or one or more of the 6 burner heating elements 3 and all 4 electric heating elements 2, or all 6 burner heating elements 3 and one or more of the 4 electric heating elements 2, or 15 or more of the 6 burner heating elements 3 and one or more of the 4 electric heating elements 2. The activation of the hybrid heating elements 2,3 is an activation of (i) one, several, or all 6 burner heating elements 3 using at least one fuel source, or (ii) one, several, or all 420 electric heating elements 2 using at least one electricity source, or (iii) one,of several or of the set of 6 burner heating elements 3 using at least one fuel source and one, several or of the set of 4 electric heating elements 2 using at least one electricity source. The fuels of the fuel sources can be natural gas, liquefied petroleum gas, 25 coal, fuel oil or biogas, and the electricity sources can be solar, wind, hydro or nuclear energy. Figures 2 and 3 respectively describe the priority gas mode and the priority electrical mode of the temperature control process for a galvanizing bath by activating the various hybrid heating elements. In priority gas mode (Figure 2), the bath temperature is measured and compared with the predetermined bath temperature (A1). If the bath temperature is greater than or equal to the predetermined bath temperature, then the system switches to state A2 and the temperature control means do not activate the hybrid heating elements. If the bath temperature is less than the predetermined bath temperature,Then the system switches to state A3 and the temperature control means activate the burner heating elements and control their operating power adjustment means to give them a certain operating power that is less than or equal to a maximum operating power 5 of the burner heating elements. When the burner heating elements are activated, the bath temperature is measured and compared with the predetermined bath temperature, and the operating power of the burner heating elements is compared to the maximum operating power of the burner heating elements 10 (A4). If the bath temperature is greater than or equal to the predetermined bath temperature and the operating power is less than or equal to the maximum operating power of the burner heating elements, then,The system switches to state A5 and the temperature control means do not activate the electric heating elements. If the bath temperature is less than the predetermined bath temperature 15 and the operating power is equal to the maximum operating power of the burner heating elements, then the system switches to state A6 and the temperature control means solicit / activate the electric heating elements and control the means for adjusting the operating power of these to give them a certain operating power 20 being less than or equal to a maximum operating power of the electric heating elements, allowing the molten metal bath 1 to have a measured bath temperature equal to the predetermined bath temperature (A7). In priority electrical mode (Figure 3), the bath temperature is measured and compared with the preset bath temperature (B1). If the bath temperature is greater than or equal to the preset bath temperature, then,the system switches to state B2 and the temperature control means do not activate the hybrid heating elements. If the bath temperature is lower than the predetermined bath temperature, then the system switches to state B3 and the temperature control means activate the electric heating elements and control the means for adjusting the operating power of these to give them a certain operating power being less than or equal to a maximum operating power of the electric heating elements. BE2024 / 5902 24 When the electric heating elements are activated, the bath temperature is measured and compared with the predetermined bath temperature, and the operating power of the electric heating elements is compared to the maximum operating power of the electric heating elements (B4). If the bath temperature is greater than or equal to the predetermined bath temperature (B5) and the operating power is less than or equal to the maximum operating power of the electric heating elements, thenThe system switches to state B5 and the temperature control means do not activate the burner heating elements. If the bath temperature is less than the predetermined bath temperature and the operating power is equal to the maximum operating power 10 of the electric heating elements, then the system switches to state B6 and the temperature control means solicit / activate the burner heating elements and control the means for adjusting the operating power of these to give them a certain operating power being less than or equal to a maximum operating power of the burner heating elements, 15 allowing to give the molten metal bath 1 a measured bath temperature equal to the predetermined bath temperature (B7). Figures 4 and 5 respectively describe the transition from priority electricity mode to priority gas mode and the transition from priority gas mode to priority electricity mode according to pre-recorded or pre-determined constraints such as the price of gas, the price of electricity, the availability of gas,Electricity availability, CO2 emissions quota, day / night factor (tariff, availability, presence of photovoltaic system, etc.), energy storage capacity. It is understood that, according to the present invention, the pre-recorded or pre-determined constraints can have any order of priority and that other constraints, not specified here, can also be pre-recorded according to specific needs or particular conditions. When the initial system mode is gas priority mode (Figure 4), a possible switch to electrical priority mode can be carried out according to these pre-recorded or pre-determined constraints.30 In the implementation shown in Figure 4, the gas price is first recorded (C1). If the gas price is not high, then gas availability is assessed (C2). If gas is not available, then the system switches to state C3 and the switch from gas priority mode to electrical priority mode is carried out. If gas is available,then BE2024 / 5902 25 the achievement of the CO₂ emission quota is verified (C4). If the CO₂ emission quota is not achieved, then the system switches to state C5 and the priority gas mode is maintained. If the CO₂ emission quota is achieved, then the system switches to state C6 and the switch from priority gas mode to priority electric mode is carried out. If the gas price is high, then the electricity price is raised (C7). If the electricity price is higher than the gas price, then the system switches to state C8 and the priority gas mode is maintained. If the electricity price is lower than or equal to the gas price, then the availability of electricity is assessed (C9). If electricity is not available, then the system switches to state C10 and the priority gas mode is maintained. If electricity is available, then the day / night factor (tariff, availability, presence of a photovoltaic system, etc.) is assessed (C11). If it is daytime, then the system switches to state C12 and the switch from priority gas mode to priority electricity mode is made. If it is nighttime,Then the energy storage capacity is evaluated (C13). If energy can be stored, then the system switches to state C14 and the switch from priority gas mode to priority electrical mode is performed. If energy cannot be stored, then the system switches to state C15 and priority gas mode is maintained. When the initial mode is priority electrical mode (Figure 5), a possible switch to priority gas mode can be performed according to pre-recorded or pre-determined constraints. In the implementation mode,