Aluminum strip passivating and oiling system

Abstract

The utility model belongs to the field of aluminum processing, and particularly relates to an aluminum strip passivating and oiling system which comprises an uncoiler, a clamping and conveying machine, a cleaning device, a first drying box, a first deviation correcting device, a first tensioner, a chromizing machine, a second drying box, a second deviation correcting device, a second tensioner, an oiling machine, a deviation guiding machine and a coiler which are sequentially arranged from the starting end to the output end. The chromizing machine comprises a chromizing rack, a front side roller coating mechanism and a back side roller coating mechanism, the front side roller coating mechanism is arranged at the left upper part of the chromizing rack, and the back side roller coating mechanism is arranged at the right upper part of the chromizing rack; the oiling machine comprises an oiling machine frame, an atomizing chamber, an air pressure chamber and an oil spraying chamber, wherein the atomizing chamber, the air pressure chamber and the oil spraying chamber are sequentially arranged on the oiling machine frame from bottom to top. According to the aluminum strip passivating and oiling device, passivating and oiling treatment of an aluminum strip can be efficiently completed at a time, repeated carrying of the aluminum strip between different process production lines is avoided, and through passivating and oiling treatment, the oxidation resistance of the aluminum strip is improved, and the surface adhesive force is increased.

Description

Technical Field

[0001] The utility model belongs to the field of aluminum material processing, and particularly relates to an aluminum strip passivation and oiling system. Background Art

[0002] With the rapid development of the industrial field, aluminum products, as a lightweight and high-strength metal material, have been widely used in many fields such as aerospace, automotive manufacturing, architectural decoration, and electronic products. However, aluminum products often face problems such as corrosion and oxidation during use, which seriously affect their service life and performance stability. Therefore, after the aluminum products are cleaned, it is necessary to further carry out passivation and oiling treatment on the aluminum strip to provide effective protection for the aluminum strip.

[0003] Passivation is a process of forming a dense passivation film on the surface of the aluminum strip through chemical or electrochemical methods. This passivation film is usually formed by drying and dehydrating the chromating solution, which can effectively isolate the aluminum strip from the external environment and prevent the erosion of corrosive media such as oxygen and moisture on the aluminum strip. At the same time, the passivation layer can also improve the surface hardness and wear resistance of the aluminum strip, and enhance its scratch and impact resistance.

[0004] Oiling is a measure taken to further enhance the anti-corrosion performance of the aluminum strip. By coating an oil film on the surface of the passivated aluminum strip, an additional protective layer can be formed to effectively prevent the penetration of corrosive media into the aluminum strip. In addition, the oil film can also play a lubricating role and reduce the wear of the aluminum strip during processing and use.

[0005] However, in the prior art, the processes of cleaning, passivating, and oiling the aluminum strip need to be carried out on different process production lines respectively, and the production of the final qualified product can be completed through the cooperation of multiple production lines. During this process, it is necessary to repeatedly wind up the aluminum strip and then manually carry and transfer it, which will not only increase the risk of bumping and wearing of the aluminum strip, but also cause waste of production time, reduce production efficiency, and prolong the production cycle. In addition, during the passivation and oiling processes of the aluminum strip, the situation of uneven process treatment effects often occurs, which greatly affects the production quality of the aluminum strip. Summary of the Invention

[0006] The purpose of the utility model is to address the above problems and deficiencies, and propose an aluminum strip passivation and oiling system, which can efficiently complete the passivation and oiling treatment of the aluminum strip at one time, avoid the repeated handling of the aluminum strip between different process production lines, save production costs, and improve production efficiency; at the same time, through the passivation and oiling treatment, the oxidation resistance of the aluminum strip is improved and the surface adhesion is increased.

[0007] To achieve the above purpose, the technical solution adopted is:

[0008] The present utility model provides an aluminum strip passivation and oiling system, comprising:

[0009] An uncoiler, a pinch roll, a cleaning device, a first drying oven, a first deviation rectifying device, a first tensioner, a chromating machine, a second drying oven, a second deviation rectifying device, a second tensioner, an oiling machine, a deflector and a coiler, which are arranged in sequence from the starting end to the output end;

[0010] The chromating machine is used for passivating the surface of the aluminum strip. The chromating machine comprises a chromating machine frame, a front roller coating mechanism and a back roller coating mechanism. The front roller coating mechanism is arranged at the upper left part of the chromating machine frame, and the back roller coating mechanism is arranged at the upper right part of the chromating machine frame;

[0011] The oiling machine is used for oiling the surface of the aluminum strip. The oiling machine comprises an oiling machine frame, and an atomizing chamber, a wind pressure chamber and an oil spraying chamber which are arranged on the oiling machine frame in sequence from bottom to top. The aluminum strip passes through the atomizing chamber, the wind pressure chamber and the oil spraying chamber.

[0012] According to the aluminum strip passivation and oiling system of the present utility model, further, the front roller coating mechanism comprises a front coating tape roller, a front coating roller and a support roller;

[0013] A first coating tank is arranged directly below the front coating tape roller, and the bottom end of the front coating tape roller is immersed in the chromating solution in the first coating tank;

[0014] The front coating roller is in contact with and arranged on the right side of the front coating tape roller;

[0015] The support roller is arranged on the right side of the front coating roller, and there is an adjustment gap between the two.

[0016] According to the aluminum strip passivation and oiling system of the present utility model, further, the back roller coating mechanism comprises a back coating tape roller and a back coating roller;

[0017] A second coating tank is arranged directly below the back coating tape roller, and the bottom end of the back coating tape roller is immersed in the chromating solution in the second coating tank;

[0018] The back coating roller is in contact with and arranged on the left side of the back coating tape roller.

[0019] According to the aluminum strip passivation and oiling system of the present utility model, further, a turning roller is arranged at the lower part of the chromating machine frame for changing the conveying direction of the aluminum strip in the chromating machine.

[0020] According to the aluminum strip passivation and oiling system of the present utility model, further, the atomizing chamber is fixedly arranged on the oiling machine frame through a fixed flange;

[0021] Inside the atomizing chamber, there is an oil tank. Nozzles are symmetrically arranged at the upper part of the atomizing chamber. An oil pump fixed on the oiling rack is arranged outside the atomizing chamber. The inlet of the oil pump is connected to the oil tank through a pipeline, and the outlet of the oil pump is connected to the nozzle through a pipeline. The nozzle is communicated with the oil spraying chamber through an oil mist pipe.

[0022] According to the aluminum strip passivation and oiling system of the present utility model, further, the air pressure chamber is fixed on the oiling rack through the ear plates on both sides thereof. It includes an air pressure chamber main body and a high-pressure blower. The bottom of the air pressure chamber main body is connected to the top of the atomizing chamber, the top of the air pressure chamber main body is connected to the bottom of the oil spraying chamber, and the high-pressure blower is arranged on the oiling rack adjacent to the air pressure chamber. Its air blowing port is communicated with the air pressure chamber through a pipeline.

[0023] According to the aluminum strip passivation and oiling system of the present utility model, further, the oil spraying chamber is fixed on the oiling rack through the ear plates on both sides thereof. The oil spraying chamber is provided with a first observation port, a second observation port and a maintenance port from top to bottom.

[0024] According to the aluminum strip passivation and oiling system of the present utility model, further, a first slit is arranged at the symmetric center of the atomizing chamber, a second slit is arranged at the symmetric center of the air pressure chamber, and a strip-shaped hole is opened at the symmetric center of the bottom of the oil spraying chamber. The first slit, the second slit and the strip-shaped hole are mutually communicated.

[0025] According to the aluminum strip passivation and oiling system of the present utility model, further, first air holes are symmetrically opened at the top of the air pressure chamber, second air holes are symmetrically opened at the bottom of the oil spraying chamber, and the first air holes and the second air holes are correspondingly communicated.

[0026] According to the aluminum strip passivation and oiling system of the present utility model, further, the front coating tape roller, the front coating roller, the back coating tape roller and the back coating roller are all driven by motors.

[0027] Adopting the above technical solution, the beneficial effects obtained are:

[0028] The overall structure of the present utility model is distributed orderly and reasonably, which can realize seamless connection between the aluminum strip cleaning, passivation and oiling processes, and avoid the problem of repeated manual handling. It not only reduces the labor intensity of workers, improves the production efficiency, but also reduces the wear rate during the handling of aluminum strips, providing guarantee for the production quality of aluminum strips.

[0029] The utility model realizes the uniform coating of chromating liquid on the surface of the aluminum strip by the cooperation of the coating belt roller and the coating roller in the chromating machine, avoiding the uneven passivation effect on the surface of the aluminum strip. And the front roller coating mechanism or the back roller coating mechanism is used alone to realize the single-sided coating of the chromating liquid on the aluminum strip after cleaning, or the front roller coating mechanism and the back roller coating mechanism are used simultaneously to realize the double-sided coating of the chromating liquid on the aluminum strip after cleaning, with relatively flexible use.

[0030] In the utility model, the air pressure chamber of the oil coating machine provides stable air pressure for the oil mist particles in the oil spraying chamber, making the oil mist particles more evenly dispersed in the oil spraying chamber and ensuring the uniformity of the adsorption of the oil mist particles on the surface of the aluminum strip.

[0031] After the aluminum strip after cleaning is passivated and oil-coated, the antioxidant ability of the aluminum material is greatly improved, the surface adhesion is increased, and the quality of the aluminum strip product is improved. Brief Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Among them, the drawings are only used to show some embodiments of the present invention, rather than limiting all embodiments of the present invention thereto.

[0033] Figure 1 is a schematic structural diagram of the aluminum coil passivation and oil coating system according to the embodiment of the present invention;

[0034] Figure 2 is a schematic structural diagram of the chromating machine according to the embodiment of the present invention;

[0035] Figure 3 is a schematic structural diagram of the oil coating machine according to the embodiment of the present invention;

[0036] Figure 4 is a schematic structural diagram of the atomization chamber according to the embodiment of the present invention;

[0037] Figure 5 is a schematic structural diagram of the air pressure chamber according to the embodiment of the present invention;

[0038] Figure 6 is a schematic structural diagram of the oil spraying chamber according to the embodiment of the present invention.

[0039] The meanings represented by the serial numbers in the figure are as follows:

[0040] 1. Uncoiler;

[0041] 2. Pincher;

[0042] 3. Cleaning device;

[0043] 4. First drying oven;

[0044] 5. First deviation rectifying device;

[0045] 6. First tensioning machine;

[0046] 7. Chromating machine, 701. Chromating machine frame, 702. Steering roller;

[0047] 710. Front roller coating mechanism, 711. Support roller, 712. Front coating roller, 713. Front coating belt roller, 714. First coating tank;

[0048] 720. Back roller coating mechanism, 721. Back coating roller, 722. Back coating belt roller, 723. Second coating tank;

[0049] 8. Second drying oven;

[0050] 9. Second deviation rectifying device;

[0051] 10. Second tensioning machine;

[0052] 11. Oil coating machine, 1110. Atomization chamber, 1120. Wind pressure chamber, 1130. Oil injection chamber, 1140. Oil coating machine frame;

[0053] 1111. Atomization chamber main body, 1112. Fixed flange, 1113. Oil tank, 1114. Oil pipe, 1115. Nozzle, 1116. Oil mist pipe, 1117. Oil pump, 1118. First slit;

[0054] 1121. Wind pressure chamber main body, 1122. First air hole, 1123. High-pressure blower, 1124. Second slit;

[0055] 1131. First observation port, 1132. Second observation port, 1133. Maintenance port, 134. Strip hole, 1135. Second air hole;

[0056] 12. Deflection guide machine;

[0057] 13. Coiling machine. Detailed implementation manners

[0058] In the following, the exemplary solutions of the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the present utility model. Unless otherwise defined, the technical terms or scientific terms used in the present utility model should have the ordinary meanings understood by those with ordinary skills in the relevant art.

[0059] As Figure 1 shown, an aluminum strip passivation and oil coating system includes an uncoiler 1, a pinch roller 2, a cleaning device 3, a first drying oven 4, a first deviation rectifying device 5, a first tensioning machine 6, a chromating machine 7, a second drying oven 8, a second deviation rectifying device 9, a second tensioning machine 10, an oil coating machine 11, a deflection guide machine 12 and a coiling machine 13 arranged in sequence from the starting end to the output end.

[0060] The uncoiler 1 is used to support and unwind the aluminum strip. After being unwound by the uncoiler 1, the aluminum coil enters the pinch roll 2. The pinch roll 2 provides power for the transmission of the aluminum strip in the system and pinches and conveys the aluminum strip backward. The aluminum strip passes through the cleaning device 3 and the first drying oven 4 in sequence after passing through the pinch roll 2, cleaning and drying the aluminum strip to reduce dust and impurities on the surface of the aluminum strip. After passing through the first drying oven 4, the aluminum strip enters the first tensioner 6, which provides a certain tension for the aluminum strip to keep the aluminum strip in a taut state. A first deviation rectifying device 5 is arranged between the first drying oven 4 and the first tensioner 6, which is used to adjust the transmission direction of the aluminum strip to avoid the phenomenon of the aluminum strip running off track after entering the first tensioner 6.

[0061] After passing through the first tensioner 6, the aluminum strip enters the chromating machine 7 for passivation treatment. The chromating machine 7 includes a front roll coating mechanism 710 arranged at the upper left part of the frame and a back roll coating mechanism 720 arranged at the upper right part, which are respectively used to coat chromating liquid on the front and back sides of the aluminum strip. After passing through the chromating machine 7, the aluminum strip enters the second drying oven 8 to dry the chromating liquid on its surface. After passing through the second drying oven 8, the aluminum strip enters the second tensioner 10, which provides a certain tension for the aluminum strip again to keep the aluminum strip in a taut state. A second deviation rectifying device 9 is arranged between the second drying oven 8 and the second tensioner 10, which is used to adjust the transmission direction of the aluminum strip to avoid the phenomenon of the aluminum strip running off track after entering the second tensioner 10.

[0062] After passing through the second tensioner 10, the aluminum strip enters the oiling machine 11 for oiling treatment. The oiling machine 11 includes an atomization chamber 1110, a wind pressure chamber 1120 and an oil injection chamber 1130. The atomization chamber 1110 pumps out the oil by using an oil pump 1117, atomizes the oil into oil mist particles and enters the oil injection chamber 1130; the wind pressure chamber 1120 provides a stable wind pressure for the oil mist particles to make the oil mist particles fill the entire oil injection chamber 1130; the oil mist particles distributed in the oil injection chamber 1130 continuously adhere to the surface of the aluminum strip, realizing the oiling treatment of the aluminum strip.

[0063] After passing through the oiling machine 11, the aluminum strip enters the coiler 13 to complete the coiling of the aluminum strip. A deflection guide 12 is arranged between the oiling machine 11 and the coiler 13, which is used to adjust the transmission angle of the aluminum strip so that the aluminum strip can be coiled onto the coiler 13 orderly.

[0064] As Figure 2As shown in the figure, the front roller coating mechanism 710 includes a front coating tape roller 713, a front coating roller 712, and a support roller 711. The bottom end of the front coating tape roller 713 is immersed in the chromating solution in the first coating tank 714 directly below it. It rotates continuously to ensure that the chromating solution is continuously coated on the surface of the front coating tape roller 713. The front coating roller 712 is in contact with and arranged on the right side of the front coating tape roller 713, and rotates in the opposite direction to the front coating tape roller 713, so that the chromating solution on the surface of the front coating tape roller 713 is evenly coated on the front coating roller 712. The support roller 711 is arranged on the right side of the front coating roller 712, and there is an adjustment gap between the two to ensure that the aluminum strip can pass through it.

[0065] The back roller coating mechanism 720 includes a back coating tape roller 722 and a back coating roller 721. The bottom end of the back coating tape roller 722 is immersed in the chromating solution in the second coating tank 723 directly below it. The back coating roller 721 is in contact with and arranged on the left side of the back coating tape roller 722. The working mode of the back roller coating mechanism 720 is the same as that of the front roller coating mechanism 710, and will not be elaborated here.

[0066] A turning roller 702 is arranged at the lower part of the chromating machine frame 701, which is used to change the transmission direction of the aluminum strip inside the chromating machine 7 to ensure that the aluminum strip can pass through the front roller coating mechanism 710 and the back roller coating mechanism 720 in sequence.

[0067] As Figure 4 shown in the figure, the atomization chamber 1110 is fixedly installed on the oiling machine frame 1140 through a fixed flange 1112. An oil tank 1113 is arranged at the bottom of the atomization chamber 1110 for storing oil. Nozzles 1115 are symmetrically arranged at the upper part of the atomization chamber 1110, and the oil tank 1113 and the nozzles 1115 are connected through an oil pump 1117. The oil pump 1117 is fixedly arranged on the oiling machine frame 1140. When the oil pumped out by the oil pump 1117 passes through the nozzle 1113, it is atomized into oil mist particles.

[0068] As Figure 5 shown in the figure, the air pressure chamber 1120 is fixed on the oiling machine frame 1140 through the ear plates on both sides of it. Its bottom is welded to the top of the atomization chamber 1110, and its top is welded to the bottom of the oil injection chamber 1130. The air outlet of the high-pressure blower 1123 is communicated with the main body 1121 of the air pressure chamber through a pipeline, and it is fixedly arranged on the adjacent oiling machine frame 1140.

[0069] As Figure 6 shown in the figure, the oil injection chamber 1130 is fixed on the oiling machine frame 1140 through the ear plates on both sides of it. The oil injection chamber 1130 is sequentially provided with a first observation port 1131, a second observation port 1132, and a maintenance port 1133 from top to bottom, which are respectively used for observing and maintaining the inside of the oil injection chamber 1130.

[0070] As Figures 3 to 6As shown, a first slit 1118 is provided at the symmetry center of the atomization chamber 1110, a second slit 1124 is provided at the symmetry center of the air pressure chamber 1120, and a strip-shaped hole 1134 is formed at the symmetry center of the bottom of the oil injection chamber 1120. The first slit, the second slit and the strip-shaped hole are interconnected. The aluminum strip passes through the first slit 1118, the second slit 1124 and the strip-shaped hole 1134 in sequence to penetrate the entire oiling machine 11.

[0071] First air holes 1122 are symmetrically provided at the top of the air pressure chamber 1120, and second air holes 1135 are symmetrically provided at the bottom of the oil injection chamber 1130. The first air holes 1122 and the second air holes 1135 are correspondingly interconnected. After the high-pressure gas generated by the high-pressure blower 1123 enters the air pressure chamber 1120, it enters the oil injection chamber 1130 through the first and second air holes in sequence.

[0072] As Figure 2 shown, a driving motor is connected to each of the front coating tape roller 713, the front coating roller 712, the back coating roller 721 and the back coating tape roller 722, ensuring the stable conveyance of the aluminum strip in the chromizing machine 7 and the efficient progress of the passivation treatment.

[0073] The working principle of this application is:

[0074] As Figure 1 shown, first, when the system starts to run, the uncoiler 1 unfolds the aluminum strip and feeds it into the pinch roller 2. The aluminum strip is conveyed backward under the pinching action of the pinch roller 2. Subsequently, the aluminum strip enters the cleaning device 3, and the aluminum strip sequentially undergoes multiple cleaning processes such as alkali washing, primary water washing, acid washing, secondary water washing, and tertiary water washing in the cleaning device 3 to clean the dust and impurities on the surface. Subsequently, the aluminum strip enters the first drying oven 4, and within the temperature range of 60°C to 80°C, the moisture on the surface of the aluminum strip is dried. Then, the aluminum strip enters the first tensioning machine 6 after the conveying angle is adjusted by the first deviation rectifying device 5. The tension provided by the first tensioning machine 6 keeps the aluminum strip in a taut state.

[0075] Subsequently, the aluminum strip enters the chromating machine 7 for passivation treatment: First, the chromating solution coating process on the front side of the aluminum strip: The front coating belt roller 713 immersed in the chromating solution in the first coating tank 714 rotates clockwise, and the chromating solution is gradually coated on the surface of the front coating belt roller 713. At the same time, the front coating roller 712 rotates counterclockwise, and the chromating solution on the surface of the front coating belt roller 713 is gradually coated on the surface of the front coating roller 712. At this time, after the aluminum strip changes the conveying direction through the turning roller 702, it passes through the adjustment gap between the front coating roller 712 and the support roller 711, and drives the support roller 711 to rotate clockwise. Meanwhile, the front side of the aluminum strip contacts the front coating roller 712. Along with the rotation of the front coating roller 712, the chromating solution on the front coating roller 712 can be evenly coated on the front side of the aluminum strip. Second, the chromating solution coating process on the back side of the aluminum strip: Similar to the chromating solution coating process on the front side of the aluminum strip, through the contact setting of the back coating belt roller 722 and the back coating roller 721, the uniform coating of the chromating solution on the back side of the aluminum strip is realized.

[0076] Subsequently, after the aluminum strip is dried by the second drying oven 8, the conveying direction is adjusted by the second deviation rectifying device 9, and tightened by the second tension machine 10, it enters the oiling machine 11 for oiling treatment. First, the oil pump 1117 pumps out the oil in the oil tank 1113 and forms oil mist particles at the nozzle 1115. The oil mist particles enter the spraying chamber 1130 through the oil mist pipe 1116. At this time, the oil mist particles gather at the bottom of the spraying chamber 1130. Second, the high-pressure gas stably released by the high-pressure blower 1123 into the main body 1121 of the air pressure chamber enters the bottom of the spraying chamber 1130 through the first air hole 1122 and the second air hole 1135, blowing the oil mist particles gathered at the bottom of the spraying chamber 1130 to move upward and disperse throughout the spraying chamber 1130. At this time, the oil mist particles floating in the spraying chamber 1130 are continuously adsorbed onto the surface of the aluminum strip, realizing the oiling treatment of the aluminum strip.

[0077] Finally, after the aluminum strip completes the oiling treatment, the conveying angle is adjusted by the deflection machine 12, and finally it enters the coiling machine 13 and completes the orderly coiling of the aluminum strip.

[0078] The technical solution of the present utility model has been described exemplarily above in combination with the drawings. Obviously, the specific implementation of the present utility model is not limited by the above-mentioned manner. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present utility model, or the concept and technical solution of the present utility model are directly applied to other occasions without improvement, they are all within the protection scope of the present utility model.

[0079] In the description of the present utility model, it should be understood that the expressions "first" and "second" are used to describe the various elements of the present utility model, and do not represent any limitation of order, quantity or importance, but are only used to distinguish one component from another.

[0080] It should be noted that when an element is described as "connected", "coupled" or "linked" to another element, it may mean a direct connection, coupling or linkage, but it should be understood that there may be intermediate elements between the two; that is, it covers the positional relationship of both direct connection and indirect connection.

[0081] It should be noted that the use of words such as "a" or "an" does not necessarily imply a limitation in quantity. Words such as "comprising" or "including" mean that the elements or items preceding such words cover the elements or items listed after such words and their equivalents, without excluding other elements or items.

[0082] It should be noted that terms indicating orientation or positional relationship such as "upper", "lower", "left", "right", etc. are only used to represent relative positional relationships, which are for the convenience of describing the present utility model, rather than the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation; when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0083] The preferred embodiments for implementing the present utility model have been described in detail above, but it should be understood that the functions of these embodiments are only for illustration and not for limiting the scope, application or construction of the present utility model in any way. The protection scope of the present utility model is defined by the appended claims and their equivalents. Those of ordinary skill in the art can make many changes to the foregoing embodiments under the teaching of the present utility model, and these changes all fall within the protection scope of the present utility model.

Claims

1. An aluminum strip passivation oiling system, characterized in that: include: The unwinder, the clamping machine, the cleaning device, the first drying box, the first deviation-correcting device, the first tension machine, the chromizing machine, the second drying box, the second deviation-correcting device, the second tension machine, the oiling machine, the deflection guide machine and the coiling machine are arranged in sequence from the starting end to the output end; The chromizing machine is used to perform passivation treatment on the surface of the aluminum strip. The chromizing machine includes a chromizing frame, a front roller coating mechanism and a back roller coating mechanism. The front roller coating mechanism is arranged at the upper left part of the chromizing frame, and the back roller coating mechanism is arranged at the upper right part of the chromizing frame. The oiler is used to apply oil to the surface of the aluminum strip. The oiler includes an oiler frame and an atomizing chamber, a wind pressure chamber and an oil spraying chamber arranged on the oiler frame from bottom to top. The aluminum strip passes through the atomizing chamber, the wind pressure chamber and the oil spraying chamber.

2. The aluminum strip passivation oiling system according to claim 1 is characterized in that: The front roller coating mechanism comprises a front coating belt roller, a front coating roller and a support roller; A first coating tank is provided directly below the front coating belt roller, and the bottom end of the front coating belt roller is immersed in the chromizing liquid in the first coating tank; The front coating roller contact is arranged on the right side of the front coating belt roller; The support roller is arranged on the right side of the front coating roller, and an adjustment gap is provided between the two.

3. The aluminum strip passivation oiling system according to claim 2 is characterized in that: The back side roller coating mechanism comprises a back side coating belt roller and a back side coating roller; A second coating tank is provided directly below the back coating belt roller, and the bottom end of the back coating belt roller is immersed in the chromizing liquid in the second coating tank; The back coating roller contact is disposed on the left side of the back coating belt roller.

4. The aluminum strip passivation oiling system according to claim 3 is characterized in that: A steering roller is arranged at the lower part of the chromizing machine frame for changing the conveying direction of the aluminum strip in the chromizing machine.

5. The aluminum strip passivation oiling system according to claim 1, characterized in that: The atomization chamber is fixedly arranged on the oil coating frame via a fixing flange; An oil tank is arranged inside the atomizing chamber, nozzles are symmetrically arranged on the upper part of the atomizing chamber, an oil pump fixed on the oil coating frame is arranged outside the atomizing chamber, the oil inlet of the oil pump is connected to the oil tank through an oil pipe, the oil outlet of the oil pump is connected to the nozzle through an oil pipe, and the nozzle is communicated with the oil spraying chamber through an oil mist pipe.

6. The aluminum strip passivation oiling system according to claim 5, characterized in that: The wind pressure chamber is fixed on the oil coating frame through the ear plates on both sides thereof, and comprises a wind pressure chamber body and a high-pressure fan. The bottom of the wind pressure chamber body is connected to the top of the atomization chamber, and the top of the wind pressure chamber body is connected to the bottom of the oil spray chamber. The high-pressure fan is arranged on the oil coating frame adjacent to the wind pressure chamber, and its air outlet is connected to the wind pressure chamber through a pipe.

7. The aluminum strip passivation oiling system according to claim 1 or 6, characterized in that: The oil spray chamber is fixed on the oil coating frame through ear plates on both sides thereof, and the oil spray chamber is provided with a first observation port, a second observation port and an inspection port from top to bottom.

8. The aluminum strip passivation oiling system according to claim 7, characterized in that: A first slit is arranged at the symmetric center of the atomization chamber, a second slit is arranged at the symmetric center of the wind pressure chamber, a strip hole is opened at the symmetric center of the bottom of the oil spray chamber, and the first slit, the second slit and the strip hole are interconnected.

9. The aluminum strip passivation oiling system according to claim 7, characterized in that: The top of the wind pressure chamber is symmetrically provided with first air holes, and the bottom of the oil spray chamber is symmetrically provided with second air holes, and the first air holes are correspondingly connected to the second air holes.

10. The aluminum strip passivation oiling system according to claim 3, characterized in that: The front coating belt roller, the front coating roller, the back coating belt roller and the back coating roller are all driven by motors.

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