Slag removal device and plating equipment

Abstract

The present invention provides a slag removal device and a plating apparatus that can efficiently discharge slag in a nose section with a simple structure. A slag removal device for removing slag in a nose section having a lower end immersed in a molten metal plating bath, comprising: a receiving tray section including: an inner side wall provided over the entire circumference facing the inner wall surface of the nose section; and an outer side wall provided over the entire circumference facing the outer wall surface of the nose section and having an upper end higher than the upper end of the inner side wall; the receiving tray section being capable of receiving the lower end of the nose section; and an intermediate wall extending upward from the bottom surface of the receiving tray section between the inner side wall and the outer side wall and having an upper end lower than the upper end of the inner side wall, at least a part of the inner side wall, the intermediate wall, and the bottom surface defining a storage section for storing molten metal, the slag removal device having a discharge port for discharging molten metal that has overflowed from the storage section through the upper end of the intermediate wall to a position below the bottom surface.

Description

Technical Field

[0001] The present invention relates to a slag removal device and a plating apparatus. Background Art

[0002] In a plating apparatus for plating a metal strip (such as a steel strip) with molten metal, a cylindrical snout surrounding the strip is provided between the outlet of a heat treatment furnace for heat-treating the strip and a plating bath storing the molten metal. The snout is arranged such that its front end portion (lower end portion) is immersed in the molten metal in the plating bath, thereby suppressing the intrusion of air into the snout and the leakage of the atmosphere gas inside the snout to the outside.

[0003] The inside of the snout is usually filled with an atmosphere gas such as a reducing gas or a non-oxidizing gas, and oxidation of the strip passing through the inside of the snout and the molten metal in the plating bath is suppressed. However, in practice, there is sometimes a trace amount of oxygen. Therefore, inside the snout, sometimes the molten metal in the plating bath reacts with oxygen to form slag of metal oxide on the surface of the plating bath. When the slag floating in the plating bath adheres to the strip, it may cause plating defects and sometimes deteriorate the quality of the strip. Therefore, it is necessary to discharge the slag generated inside the snout outside the snout.

[0004] Patent Document 1 discloses a plating apparatus in which a mechanism for discharging the slag inside the snout outside the snout is provided at the lower end portion of the snout. In this apparatus, an outflow chamber is formed by the snout wall at the lower end portion of the snout, the floor connected to the snout wall, and the overflow wall, and the slag and the molten metal introduced into the outflow chamber are sucked by a suction pump and thus discharged outside the snout and the outflow chamber.

[0005] Prior Art Documents

[0006] Patent Documents

[0007] Patent Document 1: Japanese Patent No. 6329621 Gazette Summary of the Invention

[0008] Problems to be Solved by the Invention

[0009] In the apparatus of Patent Document 1, the slag discharge mechanism for discharging the slag inside the snout is provided integrally with the snout, and the structure is complicated. In addition, since the slag discharge mechanism is provided integrally with the snout, it is difficult to confirm the slag discharge condition, or it is difficult to perform maintenance and cleaning. Therefore, it is difficult to efficiently discharge the slag.

[0010] In view of the above situation, an object of at least one embodiment of the present invention is to provide a slag removal device and a plating apparatus that can efficiently discharge the slag inside the snout with a simple structure.

[0011] Solution to the problem

[0012] The slag removal device according to at least one embodiment of the present invention is used to remove slag in a nose having a lower end immersed in a molten metal plating bath, wherein,

[0013] The slag removal device includes a receiving pan portion and an intermediate wall,

[0014] The receiving pan portion includes: an inner wall that is provided in a circumferential manner facing the inner wall surface of the nose in the lower end of the nose; and an outer wall that is provided in a circumferential manner facing the outer wall surface of the nose in the lower end of the nose, and has an upper end located at a position higher than the upper end of the inner wall, and the receiving pan portion can receive the lower end of the nose,

[0015] The intermediate wall extends upward from the bottom surface of the receiving pan portion between the inner wall and the outer wall, and has an upper end located at a position lower than the upper end of the inner wall,

[0016] At least a part of the inner wall, the intermediate wall, and the bottom surface define a storage portion for storing molten metal,

[0017] The slag removal device is provided with a discharge port for discharging the molten metal that overflows from the storage portion through the upper end of the intermediate wall to a position below the bottom surface.

[0018] In addition, the plating equipment according to at least one embodiment of the present invention includes:

[0019] A plating tank for storing molten metal;

[0020] A nose having a lower end immersed in the molten metal in the plating tank; and

[0021] The above-mentioned slag removal device configured to remove slag in the nose.

[0022] Advantages of the invention

[0023] According to at least one embodiment of the present invention, there is provided a slag removal device and a plating equipment that can efficiently discharge slag in the nose with a simple structure. Brief description of the drawings

[0024] Figure 1 It is a schematic structural diagram of a plating equipment according to an embodiment.

[0025] Figure 2A It is a cross-sectional view along a horizontal plane of a slag removal device according to an embodiment.

[0026] Figure 2Bis a view showing Figure 2A the B - B cross - section of the slag removal device shown.

[0027] Figure 2C is a view showing Figure 2A the C - C cross - section of the slag removal device shown.

[0028] Figure 3A is a cross - sectional view of a slag removal device according to an embodiment along a horizontal plane.

[0029] Figure 3B is a view showing Figure 3A the B - B cross - section of the slag removal device shown.

[0030] Figure 3C is a view showing Figure 3A the C - C cross - section of the slag removal device shown.

[0031] Figure 4A is a cross - sectional view of a slag removal device according to an embodiment along a horizontal plane.

[0032] Figure 4B is a view showing Figure 4A the B - B cross - section of the slag removal device shown.

[0033] Figure 5A is a cross - sectional view of a slag removal device according to an embodiment along a horizontal plane.

[0034] Figure 5B is a view showing Figure 5A the B - B cross - section of the slag removal device shown.

[0035] Figure 6A is a cross - sectional view of a slag removal device according to an embodiment along a horizontal plane.

[0036] Figure 6B is a view showing Figure 6A the B - B cross - section of the slag removal device shown.

[0037] Figure 7 is a schematic diagram of a slag removal device according to an embodiment.

[0038] Figure 8 is a schematic diagram of a slag removal device according to an embodiment.

[0039] Figure 9 is a schematic diagram of a slag removal device according to an embodiment.

[0040] Figure 10 is a schematic diagram of a slag removal device according to an embodiment.

[0041] Figure 11It is a schematic diagram of a plating apparatus according to an embodiment.

[0042] Figure 12 It is a schematic diagram of a plating apparatus according to an embodiment.

[0043] Figure 13 It is a schematic block diagram of a plating apparatus according to an embodiment.

[0044] Explanation of Reference Numerals

[0045] 2 Heat treatment furnace

[0046] 4 Roll

[0047] 6 Plating bath

[0048] 8 Molten metal

[0049] 10 Immersion roll

[0050] 12 Furnace nose

[0051] 12a Lower end portion

[0052] 13 Telescopic portion

[0053] 14 Inner wall surface

[0054] 16 Outer wall surface

[0055] 20 Slag removal device

[0056] 22 Receiving pan portion

[0057] 23 Bottom plate portion

[0058] 24 Bottom surface

[0059] 26 Inner side wall

[0060] 27 Upper end

[0061] 28 Outer side wall

[0062] 29 Upper end

[0063] 30 Intermediate wall

[0064] 31 Upper end

[0065] 32 Storage portion

[0066] 34 Discharge port

[0067] 36 Discharge pipe

[0068] 36a First part

[0069] 36b Second part

[0070] 36c Third part

[0071] Part 4 of 36d

[0072] 37 Outlet

[0073] 40 Pipe section

[0074] 42 Upper end opening

[0075] 50 Pump

[0076] 51 Rotating shaft

[0077] 52 Helical blade

[0078] 54 Motor

[0079] 56 Paddle blade

[0080] 58 Inert gas supply section

[0081] 59 Inert gas supply pipe

[0082] 60 First nose drive section

[0083] 62 Second nose drive section

[0084] 64 Column

[0085] 66 Table board

[0086] 68 Inert gas supply section

[0087] 69 Supply pipe

[0088] 70 On-off valve

[0089] 71 Cylindrical housing

[0090] 72 Top plate

[0091] 74 Support section

[0092] 76 Table board

[0093] 78 Roller

[0094] 80 First receiving tray drive section

[0095] 82 Second receiving tray drive section

[0096] 90 Liquid level detection section

[0097] 92 Control section

[0098] 100 Plating equipment

[0099] M Liquid level

[0100] S Belt plate. Detailed Embodiments

[0101] Hereinafter, several embodiments of the present invention will be described with reference to the drawings. Among them, the dimensions, materials, shapes, relative arrangements, etc. of the constituent components described as embodiments or shown in the drawings are not intended to limit the scope of the present invention thereto, but are merely illustrative examples.

[0102] (Structure of Plating Equipment)

[0103] Figure 1 is a schematic structural diagram of a plating equipment applying a slag removal device according to an embodiment. As Figure 1 shown, the plating equipment 100 is an equipment for continuously performing plating treatment on a metal strip S (e.g., a steel strip), and includes: a heat treatment furnace 2 for heat-treating the strip S; and a plating bath 6 (molten metal kettle) provided outside the heat treatment furnace 2 and forming a plating bath of molten metal 8.

[0104] The heat treatment furnace 2 is a device for heat-treating the strip S passing through the inside of the heat treatment furnace 2. For example, it can also be configured to continuously perform annealing treatment on the strip S. A plurality of rollers 4 are provided inside the heat treatment furnace 2. By applying tension to the strip S or changing the direction of the strip S using these rollers 4, the strip S is transported, and thus the strip S can be continuously processed. It should be noted that Figure 1 the arrow in

[0105] represents the transport direction of the strip S. A reducing or non-oxidizing gas can also be supplied into the heat treatment furnace 2.

[0106] A furnace nose 12 is provided between the outlet of the heat treatment furnace 2 and the plating bath 6. The furnace nose 12 has a cylindrical shape forming a passage for the strip S. The lower end 12a (i.e., the front end) of the furnace nose 12 is set to be immersed in the molten metal 8 (plating bath) stored in the plating bath 6. Thereby, the outflow of gas from the inside of the heat treatment furnace 2 and the furnace nose 12 to the outside, or the inflow of gas (e.g., air) from the outside of the heat treatment furnace 2 and the furnace nose 12 to the inside is prevented.

[0107] Moreover, a sink roll 10 is provided in the plating bath 6. The strip S introduced from the inside of the heat treatment furnace 2 into the plating bath of the molten metal 8 through the furnace nose 12 is redirected upward by the sink roll 10, and the strip S with molten metal attached to its surface travels upward above the plating bath 6.

[0108] A wiping nozzle (not shown) for adjusting the thickness of the plating solution (molten metal) adhering to the strip S by blowing gas toward the strip S being conveyed may also be provided at a position downstream of the sink roll 10 in the conveyance direction of the strip S.

[0109] The plating apparatus 100 further includes a slag removing device 20 for removing slag floating on the molten metal 8 in the nose 12.

[0110] (Structure of the slag removing device)

[0111] Figure 2A 、 3A 4A, 5A, and 6A are cross-sectional views along a horizontal plane of a slag removing device according to an embodiment. Figure 2B 、 3B 4B, 5B, and 6B are views showing Figure 2A 、 3A the B - B cross-section of the slag removing device shown in 4A, 5A, and 6A. Figure 2C And Figure 3C are views showing Figure 2A And Figure 3A the C - C cross-section of the slag removing device shown in.

[0112] As Figures 2A to 6B shown, the slag removing devices 20 of several embodiments include a receiving pan portion 22 disposed below the nose 12 so as to receive the lower end portion 12a of the nose 12. The receiving pan portion 22 is supported by a stationary portion (e.g., the plating bath 6) via a support mechanism (not shown).

[0113] The receiving pan portion 22 includes: an inner wall 26 provided inside the nose 12; an outer wall 28 provided outside the nose 12; and a bottom plate portion 23 provided between the inner wall 26 and the outer wall 28 and forming the bottom surface 24 of the receiving pan portion 22. The inner wall 26 is provided over the entire circumference so as to face the inner wall surface 14 of the nose 12 facing the lower end portion 12a of the nose 12. The outer wall 28 is provided over the entire circumference so as to face the outer wall surface 16 of the nose 12 facing the lower end portion 12a of the nose 12. The upper end 29 of the outer wall 28 is located at a position higher than the upper end 27 of the inner wall 26. That is, the position of the upper end 29 of the outer wall 28 in the height direction is higher than the position of the upper end 27 of the inner wall 26 in the height direction.

[0114] In addition, the receiving tray portion 22 includes an intermediate wall 30 that extends upward from the bottom surface 24 of the receiving tray portion 22 between the inner side wall 26 and the outer side wall 28. The upper end 31 of the intermediate wall 30 is located at a position lower than the upper end 27 of the inner side wall 26. That is, the positions in the height direction of the upper end 29 of the outer side wall 28, the upper end 27 of the inner side wall 26, and the upper end 31 of the intermediate wall 30 are successively from high to low.

[0115] A storage portion 32 for storing molten metal is defined by at least a part of the inner side wall 26, the intermediate wall 30, and the bottom surface 24.

[0116] In addition, the slag removing device 20 has a discharge port 34 for discharging the molten metal that overflows from the storage portion 32 via the upper end 31 of the intermediate wall 30 to a position below the bottom surface 24. The discharge port 34 is located at the same position as or lower than the upper end 31 of the intermediate wall 30 in the height direction.

[0117] The slag removing device 20 may also include a discharge pipe 36 for discharging the molten metal guided to the discharge port 34 outside the receiving tray portion 22. The discharge pipe 36 is provided in communication with the discharge port 34. The discharge port 34 may also be connected to the receiving tray portion 22 at a position below the discharge port 34.

[0118] When the slag removing device 20 is in use, the receiving tray portion 22 is arranged such that the position of the upper end 27 of the inner side wall 26 in the height direction is the same as or slightly lower than the liquid level M of the molten metal 8 in the plating bath 6. In addition, when the slag removing device 20 is in use, the receiving tray portion 22 is arranged such that the lower end portion 12a of the nose 12 is located between the inner side wall 26 and the outer side wall 28 (i.e., in a manner of receiving the lower end portion 12a of the nose 12), and such that the lower end of the nose 12 in the height direction is located between the upper end 31 of the intermediate wall 30 and the bottom surface 24 of the receiving tray portion 22.

[0119] As described above, the positions of the upper end 29 of the outer side wall 28, the upper end 27 of the inner side wall 26, and the upper end 31 of the intermediate wall 30 that constitute the receiving tray portion 22 are successively from high to low in the height direction. Therefore, when the slag removing device 20 is in use, by arranging the receiving tray portion 22 as described above, the molten metal with slag floating thereon in the plating bath 6 flows into the storage portion 32 via the upper end 27 of the inner side wall 26. The molten metal and slag stored in the storage portion 32 overflow from the storage portion 32 via the upper end 31 of the intermediate wall 30. In addition, the molten metal and slag that overflow from the storage portion 32 are discharged downward of the receiving tray portion 22 via the discharge port 34.

[0120] Therefore, according to the above structure, the slag inside the nose 12 can be discharged outside the nose 12 with a simple structure in which the receiving pan portion 22 is disposed below the nose 12. In addition, since the slag removing device 20 including the receiving pan portion 22 is separate from the nose 12, for example, by simply lifting the nose 12, it is possible to easily confirm the removal status of the slag inside the nose 12 or to clean the receiving pan portion 22. Thus, according to the above structure, the slag inside the nose 12 can be efficiently discharged with a simple structure.

[0121] It should be noted that the molten metal and slag discharged downward toward the lower portion of the receiving pan portion 22 through the discharge port 34 may also return to the plating bath through the above-described discharge pipe 36 or the like.

[0122] In several embodiments, for example, as Figures 2A to 2C and Figures 4A to 4B shown, the intermediate wall 30 has both ends respectively connected to the outer side wall 28. In Figures 2A to 2C and Figures 4A to 4B the illustrated exemplary embodiment shown, the storage portion 32 is defined by the inner side wall 26, the intermediate wall 30, the outer side wall 28, and the bottom surface 24.

[0123] According to the above structure, the storage portion 32 can be formed with a simple structure in which both ends of the intermediate wall 30 are connected to the outer side wall 28.

[0124] In several embodiments, for example, as Figures 3A to 3C shown, the intermediate wall 30 is formed to extend around between the inner side wall 26 and the outer side wall 28. In Figures 3A to 3C the illustrated exemplary embodiment shown, the storage portion 32 is defined by the inner side wall 26, the intermediate wall 30, and the bottom surface 24.

[0125] According to the above structure, the intermediate wall 30 is formed to extend around between the inner side wall 26 and the outer side wall 28, so that the storage portion 32 formed between the intermediate wall 30 and the inner side wall 26 also extends around. Therefore, the capacity of the storage portion 32 can be increased, and even when there is a large amount of slag inside the nose 12, it is easy to discharge the slag outside the nose 12.

[0126] In several embodiments, the discharge port 34 is provided on the bottom surface 24 of the receiving pan portion 22. In Figures 2A to 2C , Figures 3A to 3C and Figures 4A to 4B the illustrated exemplary embodiment shown, the discharge port 34 has an opening provided in the bottom plate portion 23.

[0127] According to the above structure, the storage portion 32 can be formed with a simple structure in which the discharge port 34 is provided on the bottom surface 24 of the receiving pan portion 22.

[0128] In several embodiments, for example, as Figures 5A to 5B and Figures 6A to 6B shown, the intermediate wall 30 includes a tubular portion 40 having a tubular shape. The tubular portion 40 has an upper end opening 42 that forms the discharge port 34. In Figures 5A to 5B and Figures 6A to 6B the illustrated embodiment shown, the storage portion 32 is defined by the inner side wall 26, the intermediate wall 30, the outer side wall 28, and the bottom surface 24.

[0129] According to the above structure, the storage portion 32 and the discharge port 34 can be formed with a simple structure in which the tubular portion 40 extending upward from the bottom surface 24 of the receiving pan portion 22 is provided.

[0130] In several embodiments, for example, as Figures 2A to 2C , Figures 3A to 3C , Figures 4A to 3B and Figures 5A to 5B shown, at least a part of the lower end portion 12a of the nose 12 is received between the inner side wall 26 and the intermediate wall 30.

[0131] According to the above structure, since the lower end portion 12a of the nose 12 is received between the inner side wall 26 and the intermediate wall 30, a part of the storage portion 32 is located outside the nose 12. Therefore, even if the nose 12 is not lifted, the discharge state of the slag can be visually confirmed. Therefore, the slag in the nose 12 can be discharged more efficiently.

[0132] In several embodiments, for example, as Figures 6A to 6B shown, at least a part of the lower end portion 12a of the nose 12 is received between the outer side wall 28 and the intermediate wall 30.

[0133] According to the above structure, since the lower end portion 12a of the nose 12 is received between the outer side wall 28 and the intermediate wall 30, the slag floating on the molten metal stored in the storage portion 32 easily overflows through the upper end 31 of the intermediate wall 30. Therefore, the slag in the nose 12 can be discharged more efficiently.

[0134] Figures 7 to 10 are schematic diagrams of a slag removal device according to an embodiment. As described below, in several embodiments, the slag removal device 20 may also include a pump, a suction pump, or an inert gas supply unit for promoting the discharge of the molten metal and the slag from the receiving pan portion 22.

[0135] For example, in several embodiments, for example, as Figures 7 to 9 shown, the slag removal device 20 includes: a screw-type or extrusion paddle-type pump 50 provided in the discharge flow path of the molten metal discharged from the receiving pan portion 22 via the discharge port 34; and a motor 54 that drives the pump 50. In Figures 7 to 9In the illustrated embodiment, the pump 50 is configured to press or suck out the molten metal and slag in the discharge pipe 36 toward the outlet 37 of the discharge pipe 36.

[0136] In the above structure, a screw-type or extrusion paddle-type pump 50 is provided in the discharge path of the molten metal discharged from the receiving pan portion 22 via the discharge port 34. Therefore, by using the pump 50 to extrude the molten metal and slag in the discharge path, the slag can be discharged smoothly.

[0137] Here, in Figure 7 the illustrated embodiment, similar to Figures 2A to 5B the illustrated embodiment, the intermediate wall 30 is provided outside the nose 12 of the furnace, and the discharge port 34 is located outside the nose 12 of the furnace. Figure 7 The discharge pipe 36 shown includes: a first portion 36a that extends downward along the vertical direction from the discharge port 34; and a second portion 36b that is connected to the first portion 36a and extends horizontally in the plating bath. The second portion 36b of the discharge pipe 36 has a side-facing outlet 37.

[0138] In addition, in Figure 8 and Figure 9 the illustrated embodiment, similar to Figures 6A to 6B the illustrated embodiment, the intermediate wall 30 is provided inside the nose 12 of the furnace, and the discharge port 34 is located inside the nose 12 of the furnace.

[0139] Figure 8 The discharge pipe 36 shown includes: a first portion 36a that extends downward along the vertical direction from the discharge port 34; a second portion 36b that is connected to the first portion 36a and extends horizontally in the plating bath; and a third portion 36c that is connected to the second portion 36b and extends upward along the vertical direction. The third portion 36c of the discharge pipe 36 has an upward-facing outlet 37.

[0140] Figure 9 The discharge pipe 36 shown includes: a first portion 36a that extends downward along the vertical direction from the discharge port 34; a second portion 36b that is connected to the first portion 36a and extends horizontally in the plating bath; a third portion 36c that is connected to the second portion 36b and extends upward along the vertical direction; and a fourth portion 36d that is connected to the upper end of the third portion and extends horizontally. The fourth portion 36d of the discharge pipe 36 has a side-facing outlet 37.

[0141] Figure 7 and Figure 8The pump 50 shown is a screw-type pump. The pump 50 includes a rotating shaft 51 and a spiral blade 52 configured to rotate together with the rotating shaft 51. The rotating shaft 51 is connected to the output shaft of the motor 54.

[0142] In Figure 7 the exemplary embodiment shown, the rotating shaft 51 of the pump 50 is arranged to pass through the discharge port 34. Further, the spiral blade 52 is provided in the first part 36a of the discharge pipe 36.

[0143] In Figure 7 the exemplary embodiment shown, the pump 50 has a cylindrical housing 71 that supports the rotating shaft 51 so as to be rotatable. An opening for the inflow of slag and molten metal is appropriately provided on the lower side of the side surface of the cylindrical housing 71. An inert gas supply unit 68 for supplying an inert gas is provided so that the pump 50 does not entrain the atmosphere (air) and send it out together with the slag and molten metal. The inert gas supply unit 68 supplies an inert gas into the cylindrical housing via a supply pipe 69. An on-off valve 70 is provided in the supply pipe 69, and the supply of the inert gas can be supplied or stopped as needed.

[0144] In Figure 8 the exemplary embodiment shown, the rotating shaft 51 of the pump 50 is arranged to pass through the opening of the outlet 37 of the discharge pipe 36. Further, the spiral blade 52 is provided in the third part 36c of the discharge pipe 36.

[0145] Figure 9 The pump 50 shown is a paddle-type pump. The pump 50 includes a rotating shaft 51 and a paddle blade 56 configured to rotate together with the rotating shaft 51. The rotating shaft 51 is connected to the output shaft of the motor 54.

[0146] In Figure 9 the exemplary embodiment shown, the rotating shaft 51 of the pump 50 is arranged to penetrate the pipe wall of the fourth part 36d of the discharge pipe 36. Further, the paddle blade 56 is provided in the fourth part 36d of the discharge pipe 36. It should be noted that in the case of using a paddle-type pump, the orientation of the discharge pipe 36 and the outlet 37 may also be set so that the fluid given centrifugal force by the paddle blade 56 can be smoothly discharged from the discharge pipe 36.

[0147] It should be noted that in the embodiment where the discharge port 34 is provided outside the nose 12 of the furnace (for example Figures 2A to 5B ), the pump 50 can be at least partially provided in the receiving pan portion 22 as shown, or the pump 50 can also be provided at the outlet portion of the discharge pipe 36 as shown. Further, in the embodiment where the discharge port 34 is provided inside the nose 12 of the furnace (for example, FIG. 6), it can also be as shown in Figure 7 or as shown in Figures 8 to 9 . Additionally, in the embodiment where the discharge port 34 is provided inside the nose 12 of the furnace (for example, FIG. 6), it can also be as shown in Figures 8 to 9A pump 50 is provided at the outlet portion of the discharge pipe 36 as shown.

[0148] As Figures 7 to 9 shown, the motor 54 for driving the pump 50 may also be provided above the discharge port 34. Alternatively, as Figure 7 shown, it may be arranged such that the motor 54 and the discharge port 34 at least partially overlap in plan view.

[0149] In the above structure, since the motor 54 for driving the pump 50 is provided above the discharge port 34, it is a compact structure and can smoothly discharge the slag.

[0150] In several embodiments, the slag removing device 20 may also include a suction pump (not shown) configured to suck the molten metal in the discharge flow path (e.g., the discharge pipe 36) of the molten metal discharged from the receiving pan portion 22 via the discharge port 34. The suction pump may be provided in the plating bath 6 or may be provided outside the plating bath 6.

[0151] According to the above structure, since a suction pump is provided in the discharge path of the molten metal discharged from the receiving pan portion 22 via the discharge port 34, by using the suction pump to suck the molten metal and slag in the discharge path, the slag can be smoothly discharged. In addition, since there are a wide range of options for the placement location of the suction pump, there is freedom in the treatment of the slag and the like discharged by the suction pump. For example, the molten liquid sucked by the suction pump can be returned to the plating bath as it is, or the molten liquid sucked by the suction pump can be returned to the plating bath after removing the slag using a filter or the like.

[0152] In several embodiments, for example, as Figure 10 shown, the slag removing device 20 includes an inert gas supply unit 58 configured to supply an inert gas (e.g., nitrogen gas, etc.) into the discharge flow path of the molten metal discharged from the receiving pan portion 22 via the discharge port 34.

[0153] In Figure 10 the illustrated exemplary embodiment shown, the inert gas supply unit 58 includes an inert gas supply pipe 59 connected to the discharge pipe 36. The inert gas from the inert gas supply source (gas cylinder, etc.) is supplied into the interior of the discharge pipe 36 via the inert gas supply pipe 59.

[0154] According to the above structure, an inert gas is supplied into the discharge path (the above discharge pipe 36) of the molten metal discharged from the receiving pan portion 22 via the discharge port 34, so that the flow of the molten metal and slag in the discharge path can be promoted by the gas. Thus, the slag can be smoothly discharged.

[0155] It should be noted that the inert gas supply unit 58 is configured to supply an inert gas to a portion of the discharge pipe 36 where the flow of the molten metal in the discharge pipe 36 is upward. For example, in Figure 10 the illustrated embodiment, the discharge pipe 36 includes: a first portion 36a that extends downward along the vertical direction from the discharge port 34; a second portion 36b that is connected to the first portion 36a and extends horizontally in the plating bath; and a third portion 36c that is connected to the second portion 36b and extends upward along the vertical direction. The third portion 36c of the discharge pipe 36 has an outlet 37 facing upward. The inert gas supply unit 58 is configured to supply an inert gas to the third portion 36c where the flow of the molten metal is upward. Thereby, the flow of the molten metal and the slag in the discharge path (discharge pipe 36) can be promoted more effectively.

[0156] (Position control of the receiving tray portion)

[0157] Figure 11 And Figure 12 is a schematic diagram of a plating apparatus 100 according to an embodiment. Figure 13 is a schematic block diagram of a plating apparatus 100 according to an embodiment.

[0158] As Figures 11 to 13 shown, in several embodiments, the plating apparatus 100 includes first and / or second receiving tray driving units 80, 82 (driving units) for moving the receiving tray portion 22 of the slag removing device 20 (refer to Figure 12 , Figure 13 ). In addition, in several embodiments, the plating apparatus 100 may also include: a liquid level detection unit 90 for detecting the liquid level of the molten metal in the plating bath 6; and a control unit 92 configured to control the first or second receiving tray driving units 80, 82 based on the liquid level of the molten metal detected by the liquid level detection unit 90 (refer to Figures 11 to 13 ). In addition, in several embodiments, the plating apparatus 100 may also include first and / or second nose driving units 60, 62 for moving the nose 12 (refer to Figure 11 , Figure 13 ).

[0159] The first receiving tray driving unit 80 is configured to be able to move the receiving tray portion 22 along the vertical direction of the nose 12. The first receiving tray driving unit 80 may, for example, also include an electric jack or a hydraulic jack.

[0160] The second receiving tray driving unit 82 is configured to be able to move the receiving tray portion 22 along the front-rear direction of the nose 12. Here, the front-rear direction of the nose 12 refers to the traveling direction of the strip in the nose 12 when viewed from above (refer to Figure 12)。The second receiving tray driving unit 82 may also include, for example, an electric cylinder or a hydraulic cylinder, etc.

[0161] In Figure 12 In the illustrated exemplary embodiment, the first receiving tray driving unit 80 is located at two positions on the side of the plating bath 6 ( Figure 12 in front of and behind the plane of the paper), is disposed on a platen 76 having rollers 78 that roll on a stationary portion at this position, and a top plate 72 is connected to the upper end portion of the first receiving tray driving unit 80. The first receiving tray driving unit 80 has a mechanism that expands and contracts in the vertical direction using a clamping mechanism, a piston, a working cylinder, etc., and can raise and lower the top plate 72 through this mechanism. The receiving tray portion 22 of the slag removing device 20 is connected to the top plate 72 via a support portion 74 extending in the vertical direction on the side. Therefore, by moving the top plate 72 in the vertical direction by the first receiving tray driving unit 80, the receiving tray portion 22 moves in the vertical direction accordingly. The first receiving tray driving units 80 at the two positions may also be synchronized with each other.

[0162] The second receiving tray driving unit 82 is disposed on the stationary portion so as to extend in the front-rear direction of the nose 12, and the end portion of the second receiving tray driving unit 82 is connected to the support portion 74 in a form that does not hinder the lifting of the support portion 74. Therefore, by expanding and contracting the second receiving tray driving unit 82 in the front-rear direction of the nose 12, the receiving tray portion 22 moves in the front-rear direction of the nose 12 accordingly. The second receiving tray driving units 82 may also be respectively connected to the support portions 74 of the first receiving tray driving units 80 at the two positions and be located at the two positions and be synchronized with each other. Alternatively, it may be connected to an unillustrated component that connects the first receiving tray driving units 80 at the two positions and make the driving force generating mechanism be at one position, and move the first receiving tray driving units 80 at the two positions simultaneously.

[0163] The liquid level (liquid surface height) of the molten metal in the plating bath may change over time. Even in such a case, by using the first receiving tray driving unit 80 to move the receiving tray portion 22 in the vertical direction according to the change in the liquid level of the molten metal, the receiving tray portion 22 can be located at a position suitable for discharging the slag.

[0164] In addition, the nose 12 is generally disposed obliquely with respect to the vertical direction (plumb direction). Therefore, there is a case where the relative positional relationship in the front-rear direction between the nose 12 and the receiving plate portion 22 changes due to the expansion and contraction of the nose 12 or the vertical movement of the receiving plate portion 22 by the first receiving plate driving portion 80 as described above, for example. Even in such a case, by moving the receiving plate portion 22 in the front-rear direction using the second receiving plate driving portion 82, and thereby moving the receiving plate portion 22 in the front-rear direction according to the change in the above-described positional relationship, it is possible to position the receiving plate portion 22 at a position suitable for the discharge of slag.

[0165] The nose driving portion including the first and second nose driving portions 60 and 62 is configured to move the nose 12 along the front-rear direction of the nose 12 and / or along the vertical direction. It should be noted that, in Figure 11 the illustrated embodiment, by using both the first and second nose driving portions 60 and 62 described below, it is possible to move the nose 12 along the front-rear direction and along the vertical direction of the nose 12.

[0166] The first nose driving portion 60 is configured to be able to move the nose 12 along the longitudinal direction of the nose 12. It should be noted that the nose 12 includes a telescopic portion 13 that can expand and contract in the longitudinal direction of the nose 12, and the movement of the nose 12 along the longitudinal direction is permitted. The first nose driving portion 60 may also include an electric jack or a hydraulic jack configured to be able to expand and contract along the longitudinal direction of the nose 12. As Figure 11 shown, the first nose driving portion 60 may also be supported by the heat treatment furnace 2 and support the nose 12.

[0167] The second nose driving portion 62 is configured to be able to move the nose 12 along an inclined direction ( Figure 11 the Z direction in Figure 11 ) to change the inclination angle θ of the nose 12 with respect to the plumb direction (see

[0168] As Figure 11 shown, the second nose driving portion 62 may also be supported by a stationary portion (for example, a column 64 extending upward from the floor surface). In addition, the end of the second nose driving portion 62 is connected to a platen 66 having rollers that roll along the longitudinal direction on the surface of the nose 12. Therefore, by the second nose driving portion 62 expanding and contracting in the above-described Z direction, the inclination angle θ of the nose 12 with respect to the plumb direction is changed accordingly.

[0169] Although not particularly illustrated, in several embodiments, the plating apparatus 100 may also include a third susceptor driving unit configured to move the susceptor unit 22 in the width direction of the nose 12. It should be noted that the width direction of the nose 12 is substantially the same as the plate width direction of the strip S.

[0170] According to the above structure, the susceptor unit 22 can be moved in the width direction of the nose 12 by the third susceptor driving unit. Therefore, it is easy to position the susceptor unit 22 at a position suitable for slag discharge.

[0171] The liquid level detection unit 90 may also include a laser or radar level gauge capable of detecting the distance between the position of the liquid level detection unit 90 and the liquid surface M of the molten metal in the plating bath 6.

[0172] The control unit 92 may also be configured to control at least one of the first susceptor driving unit 80, the second susceptor driving unit 82, the first nose driving unit 60, and the second nose driving unit 62 based on the liquid level of the molten metal detected by the liquid level detection unit 90, so that the distance between the upper end 27 of the inner side wall 26 of the susceptor unit 22 and the liquid surface M of the molten metal in the plating bath 6 in the vertical direction is within a specified range.

[0173] By moving the susceptor unit 22 and / or the nose 12 using at least one of the first susceptor driving unit 80, the second susceptor driving unit 82, the first nose driving unit 60, and the second nose driving unit 62 based on the detection result of the liquid level of the molten metal in the plating bath 6, even when the liquid level (liquid surface height) of the molten metal in the plating bath 6 changes, by appropriately moving the susceptor unit 22 according to the change in the liquid level, it is easy to position the susceptor unit 22 at a position suitable for slag discharge.

[0174] For example, assume that the liquid level in the plating bath 6 has risen by Δy through the liquid level detection unit 90. In addition, let the inclination angle of the nose 12 at this time be θ (refer to Figure 11 ).

[0175] In this case, it is necessary to raise the vertical positions of the susceptor unit 22 and the nose 12 by the same amount Δy as the rise in the liquid level. Thus, by extending the first susceptor driving unit 80 by Δy, the susceptor unit 22 is raised by Δy. In addition, by shortening the first nose driving unit 60 by Δy / cosθ, the height direction position of the nose 12 is raised by Δy.

[0176] In this case, the position of the lower end of the nose 12 moves to the right side of the paper surface by Δy / tanθ. Thus, by shortening the second susceptor driving unit 82 by Δy / tanθ, the susceptor unit 22 is moved to the right side of the paper surface by Δy / tanθ.

[0177] In this way, based on the detection result of the liquid level detection unit 90, the movement amounts in the vertical direction and the front-rear direction of the receiving tray unit 22 and the nose 12 can be calculated. Therefore, even when the liquid level of the molten metal in the plating bath 6 changes, the receiving tray unit 22 can be appropriately moved according to the change in the liquid level, and the receiving tray unit 22 can be positioned at a position suitable for discharging the slag.

[0178] The content described in each of the above embodiments can be grasped as follows, for example.

[0179] (1) The slag removal device 20 according to at least one embodiment of the present invention, which is used to remove the slag in the nose 12 having the lower end portion 12a immersed in the molten metal plating bath, wherein,

[0180] The slag removal device includes a receiving tray unit 22 and an intermediate wall 30.

[0181] The receiving tray unit 22 includes: an inner wall 26, which is provided in a circumferential manner facing the inner wall surface 14 of the lower end portion of the nose; and an outer wall 28, which is provided in a circumferential manner facing the outer wall surface 16 of the lower end portion of the nose, and has an upper end 29 located at a position higher than the upper end 27 of the inner wall, and the receiving tray unit can receive the lower end portion of the nose.

[0182] The intermediate wall 30 extends upward from the bottom surface 24 of the receiving tray unit between the inner wall and the outer wall, and has an upper end 31 located at a position lower than the upper end of the inner wall.

[0183] At least a part of the inner wall, the intermediate wall, and the bottom surface define a storage portion 32 for storing molten metal.

[0184] The slag removal device is provided with a discharge port 34 for discharging the molten metal that overflows from the storage portion through the upper end of the intermediate wall to a position below the bottom surface.

[0185] In the structure of (1) above, the positions of the upper ends of the outer wall, inner wall, and middle wall that form the receiving tray portion are successively from high to low. Therefore, by arranging the receiving tray portion to receive the lower end portion of the nose, the molten metal floating with slag in the plating tank can flow into the storage portion through the upper end of the inner wall, and the molten metal and slag stored in the storage portion can overflow from the storage portion through the upper end of the middle wall. In addition, the overflowing molten metal and slag can be discharged downward from the receiving tray portion through the discharge port. Therefore, the slag inside the nose can be discharged outside the nose with a simple structure in which the receiving tray portion is arranged below the nose. In addition, since the receiving tray portion and the nose are separate bodies, for example, by simply lifting the nose, it is possible to easily confirm the removal status of the slag inside the nose or clean the receiving tray portion. Thus, according to the structure of (1) above, the slag in the nose can be efficiently discharged with a simple structure.

[0186] (2) In several embodiments, based on the structure of (1) above,

[0187] The middle wall has both ends respectively connected to the outer wall.

[0188] According to the structure of (2) above, a storage portion can be formed with a simple structure in which both ends of the middle wall are connected to the outer wall.

[0189] (3) In several embodiments, based on the structure of (1) above,

[0190] The middle wall is formed to extend around in the space between the inner wall and the outer wall.

[0191] According to the structure of (3) above, since the middle wall is formed to extend around in the space between the inner wall and the outer wall, the storage portion formed between the middle wall and the inner wall also extends around. Therefore, the capacity of the storage portion can be increased, and even when there is a large amount of slag in the nose, it is easy to discharge the slag outside the nose.

[0192] (4) In several embodiments, based on any one of the structures of (1) to (3) above,

[0193] The discharge port is provided on the bottom surface of the receiving tray portion.

[0194] According to the structure of (4) above, a storage portion can be formed with a simple structure in which the discharge port is provided on the bottom surface of the receiving tray portion.

[0195] (5) In several embodiments, based on any one of the structures of (1) to (3) above,

[0196] The middle wall includes a tubular portion 40 having a tubular shape,

[0197] The pipe portion has an upper end opening 42 that forms the discharge port.

[0198] According to the structure of (5) above, a storage portion and a discharge port can be formed with a simple structure provided with a pipe portion extending upward from the bottom surface of the receiving pan portion.

[0199] (6) In several embodiments, based on any of the structures of (1) to (5) above,

[0200] The slag removing device is configured to receive at least a part of the lower end portion of the nose of the furnace between the inner side wall and the intermediate wall.

[0201] According to the structure of (6) above, the lower end portion of the nose of the furnace is received between the inner side wall and the intermediate wall, so that a part of the storage portion is located outside the nose of the furnace. Therefore, even without lifting the nose of the furnace, the discharge condition of the slag can be visually confirmed. Therefore, the slag in the nose of the furnace can be discharged more efficiently.

[0202] (7) In several embodiments, based on the structure of (3) above,

[0203] The slag removing device is configured to receive at least a part of the lower end portion of the nose of the furnace between the outer side wall and the intermediate wall.

[0204] According to the structure of (7) above, the lower end portion of the nose of the furnace is received between the outer side wall and the intermediate wall, so that the slag floating on the molten metal stored in the storage portion easily overflows through the upper end of the intermediate wall. Therefore, the slag in the nose of the furnace can be discharged more efficiently.

[0205] (8) In several embodiments, based on any of the structures of (1) to (7) above,

[0206] The slag removing device includes:

[0207] A screw type or extrusion paddle type pump 50 provided in the discharge flow path of the molten metal discharged from the receiving pan portion through the discharge port; and

[0208] A motor 54 provided at a position above the discharge port and for driving the pump.

[0209] According to the structure of (8) above, a screw type or extrusion paddle type pump is provided in the discharge path of the molten metal discharged from the receiving pan portion through the discharge port. Therefore, by using the pump to press out the molten metal and slag in the discharge path, the slag can be discharged smoothly. In addition, a motor for driving the pump is provided at a position above the discharge port, so it has a compact structure and can discharge the slag smoothly.

[0210] (9) In several embodiments, based on any of the structures in the above (1) to (7),

[0211] The slag removing device is provided with a suction pump configured to suck the molten metal in the discharge flow path of the molten metal (such as the above-mentioned discharge pipe 36) discharged from the receiving pan portion via the discharge port.

[0212] According to the structure of the above (9), a suction pump is provided in the discharge path of the molten metal discharged from the receiving pan portion via the discharge port. Therefore, by using the suction pump to suck the molten metal and slag in the discharge path, the slag can be discharged smoothly.

[0213] (10) In several embodiments, based on any of the structures in the above (1) to (9),

[0214] The slag removing device is provided with an inert gas supply portion 58 configured to supply inert gas into the discharge flow path of the molten metal discharged from the receiving pan portion via the discharge port.

[0215] According to the structure of the above (10), inert gas is supplied into the discharge path of the molten metal discharged from the receiving pan portion via the discharge port. Therefore, the flow of the molten metal and slag in the discharge path can be promoted by the gas. Thus, the slag can be discharged smoothly.

[0216] (11) The plating equipment of at least one embodiment of the present invention includes:

[0217] A plating bath 6 for storing molten metal;

[0218] A nose 12 having a lower end portion immersed in the molten metal in the plating bath; and

[0219] The slag removing device 20 according to any one of the above (1) to (10), configured to remove the slag in the nose.

[0220] In the structure of (11) above, the outer wall, inner wall, and middle wall that form the receiving tray portion are in descending order of position at the upper ends in sequence. Therefore, by arranging the receiving tray portion to receive the lower end portion of the nose, the molten metal with slag floating in the plating bath can flow into the storage portion through the upper end of the inner wall, and the molten metal and slag stored in the storage portion can overflow from the storage portion through the upper end of the middle wall. In addition, the overflowing molten metal and slag can be discharged downward from the discharge port toward the lower part of the receiving tray portion. Therefore, the slag inside the nose can be discharged outside the nose with a simple structure in which the receiving tray portion is arranged below the nose. In addition, since the receiving tray portion and the nose are separate bodies, for example, by simply lifting the nose, it is possible to easily confirm the removal status of the slag inside the nose or clean the receiving tray portion. Therefore, according to the structure of (11) above, the slag in the nose can be efficiently discharged with a simple structure.

[0221] (12) In several embodiments, based on the structure of (11) above,

[0222] The plating apparatus includes a driving unit (such as the first receiving tray driving unit 80 described above) for moving the receiving tray portion at least in the vertical direction.

[0223] According to the structure of (12) above, the driving unit can be used to move the receiving tray portion in the vertical direction. Therefore, even when the liquid level (liquid surface height) of the molten metal in the plating bath changes, by moving the receiving tray portion in the vertical direction according to the change in the liquid level, the receiving tray portion can be positioned at a position suitable for discharging the slag.

[0224] (13) In several embodiments, based on the structure of (11) or (12) above,

[0225] The plating apparatus includes a driving unit (such as the second receiving tray driving unit 82 described above) for moving the receiving tray portion at least in the front-rear direction of the nose.

[0226] According to the structure of (13) above, the driving unit can be used to move the receiving tray portion in the front-rear direction (the traveling direction of the strip in the nose when viewed from above). Therefore, even when the relative positional relationship between the nose and the receiving tray portion in the front-rear direction changes due to thermal expansion and contraction of the nose or the like, by moving the receiving tray portion in the front-rear direction according to the change in the positional relationship, the receiving tray portion can be positioned at a position suitable for discharging the slag.

[0227] (14) In several embodiments, based on any one of the structures of (11) to (13) above,

[0228] The plating apparatus includes a driving unit configured to move the susceptor portion at least in the width direction of the nose of the furnace.

[0229] According to the structure of (14) above, the susceptor portion can be moved in the width direction of the nose of the furnace by the driving unit. Therefore, it is easy to position the susceptor portion at a position suitable for the discharge of the slag.

[0230] (15) In several embodiments, based on any of the structures of (12) to (14) above,

[0231] the plating apparatus includes:

[0232] a liquid level detection unit 90 configured to detect the liquid level of the molten metal in the plating bath; and

[0233] a control unit 92 configured to control the driving unit based on the liquid level detected by the liquid level detection unit so that the distance in the vertical direction between the upper end of the inner side wall and the liquid surface of the molten metal in the plating bath is within a specified range.

[0234] According to the structure of (15) above, the susceptor portion is moved by the driving unit based on the detection result of the liquid level of the molten metal in the plating bath. Therefore, even when the liquid level (liquid surface height) of the molten metal in the plating bath changes, by appropriately moving the susceptor portion according to the change in the liquid level, it is easy to position the susceptor portion at a position suitable for the discharge of the slag.

[0235] The embodiments of the present invention have been described above, but the present invention is not limited to the above embodiments, and also includes modified forms obtained by modifying the above embodiments and forms obtained by appropriately combining these forms.

[0236] In this specification, expressions indicating relative or absolute configurations such as "in a certain direction", "along a certain direction", "parallel", "orthogonal", "center", "concentric", or "coaxial" not only represent such strict configurations but also represent states in which there are tolerances or displacements in angles and distances to such an extent that the same functions can be obtained.

[0237] For example, expressions indicating equal states of things such as "same", "equal", and "homogeneous" not only represent strictly equal states but also represent states in which there are tolerances or differences to such an extent that the same functions can be obtained.

[0238] In addition, in this specification, expressions indicating shapes such as a quadrilateral shape and a cylindrical shape not only represent geometrically strict quadrilateral shapes, cylindrical shapes, etc., but also represent shapes including concavo-convex portions, chamfered portions, etc. within a range where the same effects can be obtained.

[0239] In addition, in this specification, expressions such as "comprising", "including", or "having" a component do not exclude the existence of other components.

Claims

1. A slag removing device for removing slag in a nose of a furnace having a lower end portion immersed in a molten metal plating bath, wherein, the slag removing device includes a receiving pan portion and an intermediate wall, the receiving pan portion includes: an inner wall provided in a circumferential manner facing the inner wall surface of the nose in the lower end portion of the nose; and an outer wall provided in a circumferential manner facing the outer wall surface of the nose in the lower end portion of the nose, and having an upper end located at a position higher than the upper end of the inner wall, and the receiving pan portion can receive the lower end portion of the nose, the intermediate wall extends upward from the bottom surface of the receiving pan portion between the inner wall and the outer wall, and has an upper end located at a position lower than the upper end of the inner wall, at least a part of the inner wall, the intermediate wall and the bottom surface define a storage portion for storing molten metal, the slag removing device includes a discharge port for discharging the molten metal overflowing from the storage portion via the upper end of the intermediate wall to a position below the bottom surface.

2. The slag removing device according to claim 1, wherein, the intermediate wall has both ends respectively connected to the outer wall.

3. The slag removing device according to claim 1, wherein, the intermediate wall is formed in a circumferential manner between the inner wall and the outer wall.

4. The slag removing device according to any one of claims 1 to 3, wherein, the discharge port is provided on the bottom surface of the receiving pan portion.

5. The slag removing device according to claim 1, wherein, the intermediate wall includes a tubular portion having a tubular shape, the tubular portion has an upper end opening forming the discharge port.

6. The slag removing device according to any one of claims 1 to 3, 5, wherein, the slag removing device is configured to receive at least a part of the lower end portion of the nose between the inner wall and the intermediate wall.

7. The slag removing device according to claim 3, wherein, the slag removing device is configured to receive at least a part of the lower end portion of the nose between the outer wall and the intermediate wall.

8. The slag removing device according to any one of claims 1 to 3, 5, 7, wherein, the slag removing device includes: a screw type or extrusion paddle type pump provided in a discharge flow path of the molten metal discharged from the receiving pan portion via the discharge port; and a motor provided at a position above the discharge port and configured to drive the pump.

9. The slag removing device according to any one of claims 1 to 3, 5, 7, wherein, the slag removing device includes a suction pump configured to suck the molten metal in the discharge flow path of the molten metal discharged from the receiving pan portion via the discharge port.

10. The slag removing device according to any one of claims 1 to 3, 5, 7, wherein, The slag removal device includes an inert gas supply unit configured to supply inert gas into the discharge flow path of the molten metal discharged from the receiving pan portion through the discharge port.

11. A plating apparatus, wherein, the plating apparatus includes: a plating bath for storing molten metal; a nose having a lower end portion immersed in the molten metal in the plating bath; and the slag removal device according to any one of claims 1 to 10, configured to remove slag in the nose.

12. The plating apparatus according to claim 11, wherein, the plating apparatus includes a drive unit configured to move the receiving pan portion at least in the vertical direction.

13. The plating apparatus according to claim 11 or 12, wherein, the plating apparatus includes a drive unit configured to move the receiving pan portion at least in the front-rear direction of the nose.

14. The plating apparatus according to claim 11 or 12, wherein, the plating apparatus includes a drive unit configured to move the receiving pan portion at least in the width direction of the nose.

15. The plating apparatus according to claim 12, wherein, the plating apparatus includes: a liquid level detection unit configured to detect the liquid level of the molten metal in the plating bath; and a control unit configured to control the drive unit based on the liquid level detected by the liquid level detection unit so that the distance in the vertical direction between the upper end of the inner side wall and the liquid surface of the molten metal in the plating bath is within a specified range.

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