Passivation method, system, equipment and medium for hot galvanizing

Abstract

The invention provides a passivation method, system, equipment and medium for hot galvanizing, and belongs to the field of hot galvanizing. The method comprises the steps that at least two roller coater bodies and a plurality of passivation circulation tanks are arranged on a passivation production line in advance, and each passivation circulation tank corresponds to one passivation medium; according to the passivation requirement of a user and the chemical property of a passivation medium, when strip steel passes through the roller coater, the corresponding roller coater is started for passivation or the current passivation mode is switched according to the use condition logic of the roller coater, and the roller coater is classified in advance according to the chemical property of the passivation medium. By optimizing the layout of the production line, the production of various and more types of hot galvanizing passivated products is met, the production efficiency of the production line is remarkably improved, in addition, the types of the passivated products are increased, and meanwhile the situation that the market capacity is excessive due to the fact that the capacity of the galvanized products is increased due to the fact that the types of the passivated products are increased through a new yield increasing line can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of hot-dip galvanizing, and specifically relates to a hot-dip galvanizing passivation method, system, equipment and medium. Background Art

[0002] Hot-dip galvanizing is one of the important technologies for metal surface protection, which can effectively improve the corrosion resistance and service life of metals.

[0003] However, the traditional hot-dip galvanizing unit can only produce products with two passivation methods at most. Conventional transition requires disabling the passivation method being produced, switching the tray, passivation agent, and circulating the agent evenly. The operation is complicated, and a single switch takes at least 3 hours. In addition, at least 100 tons of virtual transition materials are used. According to the annual design capacity of 400,000 tons of units, the annual loss of benefits is at least 3 million yuan. In addition, if you want to further develop the product outline, produce 3 or more passivation products, and improve market competitiveness and market share, you have to increase investment and build another unit. This method has a longer construction period and low efficiency. Therefore, it is of great significance to develop an economical and efficient flexible production method that can meet a variety of hot-dip galvanizing passivation methods. Summary of the invention

[0004] The purpose of the embodiments of the present invention is to provide a hot-dip galvanizing passivation method, system, equipment and medium, which are used to completely or at least partially solve the technical problems of long construction period and low efficiency existing in the above-mentioned prior art.

[0005] In a first aspect, an embodiment of the present application provides a hot-dip galvanizing passivation method, comprising: At least two roller coaters and a plurality of passivation circulation tanks are pre-arranged on the passivation production line, wherein each passivation circulation tank corresponds to a passivation medium; According to the user's passivation requirements and the chemical properties of the passivation medium, when the strip passes through the roller coater, the corresponding roller coater is enabled for passivation or the current passivation mode is switched according to the use condition logic of the roller coater, wherein the roller coaters are classified in advance according to the chemical properties of the passivation medium.

[0006] Optionally, the classification of roller coaters according to the agent characteristics of the passivation medium includes: According to the chromium-containing or chromium-free characteristics of the passivation medium agent, the roller coater is divided into a chromium-containing passivation roller coater and a chromium-free passivation roller coater. The chromium-containing passivation medium agent includes but is not limited to trivalent chromium passivation agent and trivalent chromium self-lubricating passivation agent; the chromium-free passivation medium agent includes but is not limited to chromium-free passivation agent, chromium-free fingerprint-resistant passivation agent, and chromium-free self-lubricating passivation agent.

[0007] Optionally, according to the user's passivation requirements and the characteristics of the passivation medium, when the strip passes through the roller coater, according to the use condition logic of the roller coater, the corresponding roller coater is enabled for passivation or the current passivation mode is switched, including: When the hot-dip galvanizing production line is in the non-passivation passivation mode, all roller coaters are disabled at the same time; When the hot-dip galvanizing production line is passivated in chromium-free passivation mode, the chromium-free passivation roller coater is disabled, the chromium-free passivation circulation system is enabled, the chromium-free anti-fingerprint circulation system is disabled, and when the circulation pump is started and the passivation medium flow rate is detected to be ≥30L / min, the chromium-free passivation roller coater is automatically enabled; When the hot-dip galvanizing production line is passivated by chrome-free fingerprint-resistant passivation, the chrome-free passivation roller coater is disabled, the chrome-free passivation circulation system is disabled, and the chrome-free fingerprint-resistant circulation system is enabled. When the circulation pump is started and the flow rate of the passivation medium is detected to be ≥30L / min, the chrome-free passivation roller coater is automatically enabled; When the hot-dip galvanizing production line is passivated by trivalent chromium passivation, the chromium-free passivation roller coater is disabled, the trivalent chromium passivation circulation system is enabled, and the trivalent chromium self-lubricating passivation circulation system is disabled. After the circulation pump is started, when the passivation liquid medium volume is detected to be ≥30L / min, the chromium passivation roller coater is automatically enabled; When the passivation method of the hot-dip galvanizing production line is trivalent self-lubricating passivation, the chromium-free passivation roller coater is disabled, the trivalent chromium passivation circulation system is disabled, and the trivalent chromium self-lubricating passivation circulation system is enabled. After the circulation pump is started, when the passivation medium flow rate is detected to be ≥30L / min, the chromium-free passivation roller coater is automatically enabled.

[0008] Optionally, the chrome-free passivation circulation system and the chrome-free fingerprint-resistant circulation system include a chrome-free fingerprint-resistant overflow solenoid valve, a chrome-free fingerprint-resistant liquid outlet solenoid valve, a chrome-free overflow solenoid valve, a chrome-free liquid outlet solenoid valve, a circulation pump, a chrome-free passivation circulation tank, a chrome-free fingerprint-resistant passivation circulation tank, pipelines and a tray; The process of enabling the chrome-free passivation circulation system and disabling the chrome-free fingerprint-resistant circulation system includes: closing the chrome-free fingerprint-resistant overflow solenoid valve, closing the chrome-free fingerprint-resistant liquid outlet solenoid valve, opening the chrome-free overflow solenoid valve, opening the chrome-free liquid outlet solenoid valve, and opening the circulation pump in sequence; The process of enabling the chrome-free fingerprint-resistant circulation system and disabling the chrome-free passivation circulation system includes: closing the chrome-free passivation overflow solenoid valve, closing the chrome-free passivation liquid outlet solenoid valve, opening the chrome-free fingerprint-resistant overflow solenoid valve, opening the chrome-free fingerprint-resistant liquid outlet solenoid valve, and turning on the circulation pump in sequence.

[0009] Optionally, the trivalent chromium passivation circulation system and the trivalent chromium self-lubricating passivation circulation system include: a trivalent chromium self-lubricating overflow solenoid valve, a trivalent chromium self-lubricating liquid outlet solenoid valve, a trivalent chromium overflow solenoid valve, a trivalent chromium liquid outlet solenoid valve, a circulation pump, a trivalent chromium passivation circulation tank, a trivalent chromium self-lubricating passivation circulation tank, pipelines and a tray; The process of enabling the trivalent chromium passivation circulation system and disabling the trivalent chromium self-lubricating passivation circulation system includes: closing the trivalent chromium self-lubricating overflow solenoid valve, closing the trivalent chromium self-lubricating liquid outlet solenoid valve, opening the trivalent chromium overflow solenoid valve, opening the trivalent chromium liquid outlet solenoid valve, and opening the circulation pump in sequence; The process of enabling the trivalent chromium self-lubricating passivation circulation system and disabling the trivalent chromium passivation circulation system includes: closing the trivalent chromium overflow solenoid valve, closing the trivalent chromium liquid outlet solenoid valve, opening the trivalent chromium self-lubricating overflow solenoid valve, opening the trivalent chromium self-lubricating liquid outlet solenoid valve, and opening the circulation pump in sequence.

[0010] Optionally, according to the user's passivation requirements and the reagent characteristics of the passivation medium, when the strip passes through the roller coater, according to the use condition logic of the roller coater, before enabling the corresponding roller coater for passivation or switching the current passivation mode, the hot-dip galvanizing passivation method further includes: Strip spray cleaning, brush roller cleaning, electrolytic cleaning, brush roller cleaning, and rinsing water cleaning, among which, the spray cleaning conductivity is 25-55ms / cm, the brush roller current is 1-5A, the electrolytic cleaning conductivity is 35-65ms / cm, the rinsing water conductivity is ≤20us / cm, the spray alkali solution temperature is 70℃-90℃, the electrolytic alkali solution temperature is 70℃-90℃, and the rinsing water temperature is 60℃-75℃.

[0011] Optionally, according to the user's passivation requirements and the reagent characteristics of the passivation medium, when the strip passes through the roller coater, according to the use condition logic of the roller coater, before enabling the corresponding roller coater for passivation or switching the current passivation mode, the hot-dip galvanizing passivation method further includes: Annealing: preheating, soaking, slow cooling, fast cooling, entering the zinc pot, among which, the preheating plate temperature is 300℃-350℃, the soaking plate temperature is 700℃-840℃, the slow cooling plate temperature is 620℃-700℃, the fast cooling plate temperature is 450℃-540℃, and the plate temperature entering the zinc pot is 450℃-480℃.

[0012] In a second aspect, the present application also provides a hot-dip galvanizing passivation system, comprising: At least two roller coaters; Multiple passivation circulation tanks, each of which corresponds to a passivation medium; The roller coater control system is used to enable the corresponding roller coater for passivation or switch the current passivation mode according to the user's passivation requirements and the chemical properties of the passivation medium when the strip passes through the roller coater according to the use condition logic of the roller coater, wherein the roller coaters are classified in advance according to the chemical properties of the passivation medium.

[0013] In a third aspect, an embodiment of the present application further provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the above-mentioned hot-dip galvanizing passivation method when executing the program.

[0014] In a fourth aspect, an embodiment of the present application further provides a storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the above-mentioned hot-dip galvanizing passivation method.

[0015] It can be seen from the above technical solutions that the present invention has the following advantages: In the hot-dip galvanizing passivation method, system, equipment and medium provided in the present application, the production line layout is optimized to meet the production of multiple or more types of hot-dip galvanizing passivation products, significantly improving the production efficiency of the production line, reducing the passivation mode switching time from 3 hours to zero, and reducing the transition coil demand from 100 tons to zero; in addition, the maximum number of passivation modes produced on the same production line is increased from 2 to more than 4. In addition, while increasing the types of passivation products, it can also avoid market overcapacity caused by the expansion of galvanized product production capacity due to the expansion of passivation product types caused by the addition of new production lines. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0017] Figure 1 A flow chart of a hot-dip galvanizing passivation method provided by an embodiment of the present invention; Figure 2 A flow chart of enabling a corresponding roller coater to perform passivation or switch the current passivation mode according to the use condition logic of the roller coater provided by an embodiment of the present invention; Figure 3 A schematic structural diagram of a chromium-free passivation circulation system provided in an embodiment of the present invention; Figure 4 A schematic structural diagram of a chrome-free anti-fingerprint circulation system provided by an embodiment of the present invention; Figure 5 A schematic structural diagram of a trivalent chromium passivation circulation system provided in an embodiment of the present invention; Figure 6 A schematic structural diagram of a trivalent chromium self-lubricating passivation circulation system provided in an embodiment of the present invention; Figure 7 A schematic diagram of equipment layout of a passivation area of ​​a hot-dip galvanizing production line provided by an embodiment of the present invention; Figure 8 This is a passivation mode determination flow chart provided by an embodiment of the present invention; Fig. 9 A hot-dip galvanizing passivation system provided by an embodiment of the present invention; Fig.10 It is a schematic diagram of the hardware structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In the detailed description below, various embodiments of the present disclosure will be described more fully. The present disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present disclosure to the specific embodiments disclosed herein, but rather the present disclosure should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present disclosure.

[0019] Hereinafter, the terms "include" or "may include" that may be used in various embodiments of the present disclosure indicate the presence of the disclosed functions or operations, and do not limit the addition of one or more functions or operations. In addition, as used in various embodiments of the present disclosure, the terms "include", "have" and their cognates are intended only to indicate specific features, numbers, steps, operations, or combinations of the foregoing items, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, or combinations of the foregoing items or the possibility of adding one or more features, numbers, steps, operations, or combinations of the foregoing items.

[0020] In various embodiments of the present disclosure, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 The figure is a flow chart of a hot dip galvanizing passivation method in a specific embodiment, comprising the following execution steps: Step 100: at least two roller coaters and a plurality of passivation circulation tanks are pre-arranged on the passivation production line, wherein each passivation circulation tank corresponds to a passivation medium.

[0023] Exemplarily, each roller coater is equipped with an independent drive motor, coating roller and scraper system. The roller coaters can operate independently or work together (for example, when double-sided passivation is required). Each passivation circulation tank is equipped with a liquid level sensor, a temperature controller, a circulation pump and a filter. Each passivation circulation tank corresponds to a passivation medium (for example, chromate, phosphate, silane, etc.).

[0024] Step 101: According to the user's passivation requirements and the chemical properties of the passivation medium, when the strip passes through the roller coater, according to the use condition logic of the roller coater, the corresponding roller coater is enabled for passivation or the current passivation mode is switched, wherein the roller coaters are classified in advance according to the chemical properties of the passivation medium.

[0025] Specifically, the classification of roller coaters according to the chemical properties of the passivation medium includes: according to the chromium or chromium-free properties of the passivation medium agent, the roller coater is divided into a chromium passivation roller coater and a chromium-free passivation roller coater, wherein the chromium passivation medium agent includes but is not limited to trivalent chromium passivation agent and trivalent chromium self-lubricating passivation agent; the chromium-free passivation medium agent includes but is not limited to chromium-free passivation agent, chromium-free fingerprint-resistant passivation agent, and chromium-free self-lubricating passivation agent.

[0026] In one embodiment, see Figure 2 As shown, when executing step 101, the following steps may be specifically performed: S200: When the hot-dip galvanizing production line is in non-passivation passivation mode, all roller coaters are disabled at the same time.

[0027] S201: When the hot-dip galvanizing production line is passivated in chromium-free passivation mode, the chromium-free passivation roller coater is disabled, the chromium-free passivation circulation system is enabled, the chromium-free anti-fingerprint circulation system is disabled, and when the circulation pump is started and the passivation medium flow rate is detected to be ≥30L / min, the chromium-free passivation roller coater is automatically enabled.

[0028] S202: When the passivation method of the hot-dip galvanizing production line is chrome-free fingerprint-resistant passivation, the chrome passivation roller coater is disabled, the chrome-free passivation circulation system is disabled, and the chrome-free fingerprint-resistant circulation system is enabled. After the circulation pump is started, when the passivation medium flow rate is detected to be ≥30L / min, the chrome-free passivation roller coater is automatically enabled.

[0029] For example, see Figure 3 , Figure 4As shown, it is a structural schematic diagram of a chrome-free passivation circulation system and a structural schematic diagram of a chrome-free fingerprint-resistant circulation system provided by an embodiment of the present invention, wherein the chrome-free passivation circulation system and the chrome-free fingerprint-resistant circulation system include a chrome-free fingerprint-resistant overflow solenoid valve, a chrome-free fingerprint-resistant liquid outlet solenoid valve, a chrome-free overflow solenoid valve, a chrome-free liquid outlet solenoid valve, a circulation pump, a chrome-free passivation circulation tank, a chrome-free fingerprint-resistant passivation circulation tank, a pipeline and a tray; the process of enabling the chrome-free passivation circulation system and disabling the chrome-free fingerprint-resistant circulation system includes: closing the chrome-free fingerprint-resistant overflow solenoid valve, closing the chrome-free fingerprint-resistant liquid outlet solenoid valve, opening the chrome-free overflow solenoid valve, opening the chrome-free liquid outlet solenoid valve, and opening the circulation pump in sequence; the process of enabling the chrome-free fingerprint-resistant circulation system and disabling the chrome-free passivation circulation system includes: closing the chrome-free passivation overflow solenoid valve, closing the chrome-free passivation liquid outlet solenoid valve, opening the chrome-free fingerprint-resistant overflow solenoid valve, opening the chrome-free fingerprint-resistant liquid outlet solenoid valve, and opening the circulation pump in sequence.

[0030] S203: When the passivation method of the hot-dip galvanizing production line is trivalent chromium passivation, the chromium-free passivation roller coater is disabled, the trivalent chromium passivation circulation system is enabled, and the trivalent chromium self-lubricating passivation circulation system is disabled. After the circulation pump is started, when the passivation liquid medium volume is detected to be ≥30L / min, the chromium passivation roller coater is automatically enabled.

[0031] S204: When the passivation method of the hot-dip galvanizing production line is trivalent self-lubricating passivation, the chromium-free passivation roller coater is disabled, the trivalent chromium passivation circulation system is disabled, and the trivalent chromium self-lubricating passivation circulation system is enabled. After the circulation pump is started, when the passivation medium flow rate is detected to be ≥30L / min, the chromium-free passivation roller coater is automatically enabled.

[0032] For example, see Figure 5 , Figure 6 As shown, a structural schematic diagram of a trivalent chromium passivation circulation system and a structural schematic diagram of a trivalent chromium self-lubricating passivation circulation system provided by an embodiment of the present invention, the trivalent chromium passivation circulation system and the trivalent chromium self-lubricating passivation circulation system include: a trivalent chromium self-lubricating overflow solenoid valve, a trivalent chromium self-lubricating liquid outlet solenoid valve, a trivalent chromium overflow solenoid valve, a trivalent chromium liquid outlet solenoid valve, a circulation pump, a trivalent chromium passivation circulation tank, a trivalent chromium self-lubricating passivation circulation tank, a pipeline and a tray; the process of enabling the trivalent chromium passivation circulation system and disabling the trivalent chromium self-lubricating passivation circulation system includes: closing the trivalent chromium self-lubricating overflow solenoid valve, closing the trivalent chromium self-lubricating liquid outlet solenoid valve, opening the trivalent chromium overflow solenoid valve, opening the trivalent chromium liquid outlet solenoid valve, and opening the circulation pump in sequence; the process of enabling the trivalent chromium self-lubricating passivation circulation system and disabling the trivalent chromium passivation circulation system includes: closing the trivalent chromium overflow solenoid valve, closing the trivalent chromium liquid outlet solenoid valve, opening the trivalent chromium self-lubricating overflow solenoid valve, opening the trivalent chromium self-lubricating liquid outlet solenoid valve, and opening the circulation pump in sequence.

[0033] In some embodiments, the main production process of the flexible production method of multiple hot-dip galvanizing passivation methods is: plan issuance - steel coil information identification - cleaning - continuous annealing - galvanizing - skin-finishing - passivation method identification - selection of appropriate roller coating machine and its system for use / roller coating machine disabled - drying - cooling - coiling - packaging - storage. The main processes are as follows: strip spray cleaning - brush roller cleaning - electrolytic cleaning - brush roller cleaning - rinsing water cleaning, wherein the spray cleaning conductivity is 25-55ms / cm, the brush roller current (actual current - no-load current) is 1-5A, the electrolytic cleaning conductivity is 35-65ms / cm, the rinsing water conductivity is ≤20us / cm, the spray alkali solution temperature is 70℃-90℃, the electrolytic alkali solution temperature is 70℃-90℃, and the rinsing water temperature is 60℃-75℃. The annealing process and process parameters are as follows: preheating - soaking - slow cooling - fast cooling - entering the zinc pot, among which, the preheating plate temperature is 300℃-350℃, the soaking plate temperature is 700℃-840℃, the slow cooling plate temperature is 620℃-700℃, the fast cooling plate temperature is 450℃-540℃, and the plate temperature entering the zinc pot is 450℃-480℃.

[0034] In one specific embodiment, see Figure 7 As shown, it is a schematic diagram of the equipment layout of the passivation area of ​​a hot-dip galvanizing production line provided by an embodiment of the present invention. A platform is constructed above a conventional roller coater, an additional roller coater is added, and multiple passivation circulation tanks (i.e., spare tank 1 and spare tank 2) are set. It should be understood that the number of passivation circulation tanks can be set according to the actual application scenario, and there is no restriction here, ensuring that each circulation tank corresponds to a passivation medium. In principle, roller coater No. 1 (a first-layer roller coater) uses chromium-free passivation, chromium-free fingerprint-resistant passivation, chromium-free self-lubricating passivation, etc., and roller coater No. 2 ((two-layer roller coater)) uses trivalent chromium passivation, trivalent chromium self-lubricating passivation, etc. The production line can reserve the circulation tank according to the existing product situation. When the strip passes through the steering roller below the passivation, it passes through the first-layer roller coater, the second-layer roller coater, the drying bellows, the cooling bellows, and finally passes through the steering roller of the post-processing tower to complete the passivation.

[0035] In one specific embodiment, see Figure 8 As shown, it is a passivation mode judgment flow chart provided by an embodiment of the present invention. At the beginning of production, the passivation mode of the steel coil is identified to determine whether it is passivated. If not, the passivation is turned on and the passivation control ends. If so, it is determined whether it is trivalent chromium passivation, trivalent chromium self-lubricating passivation, chromium-free passivation, or chromium-free fingerprint-resistant passivation. If so, the passivation is put into use until the passivation control ends.

[0036] In this embodiment, a variety of passivation switching treatment processes are provided and can be flexibly selected according to actual needs, thereby reducing production costs and realizing rapid switching of passivation methods, greatly reducing the demand for transition coils, and avoiding the expansion of galvanized product production capacity due to the expansion of passivation product types in new production lines, which may cause overcapacity in the market. The process can also be applied to other galvanized production lines.

[0037] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0038] like Fig. 9 As shown, the following is an embodiment of the hot-dip galvanizing passivation system provided in the embodiment of the present disclosure, which belongs to the same inventive concept as the hot-dip galvanizing passivation method of the above-mentioned embodiments. For details not fully described in the embodiment of the hot-dip galvanizing passivation system, reference can be made to the embodiment of the above-mentioned hot-dip galvanizing passivation method.

[0039] The hot-dip galvanizing passivation system includes: at least two roller coaters; Multiple passivation circulation tanks, each of which corresponds to a passivation medium; The roller coater control system is used to enable the corresponding roller coater for passivation or switch the current passivation mode according to the user's passivation requirements and the chemical properties of the passivation medium when the strip passes through the roller coater according to the use condition logic of the roller coater, wherein the roller coaters are classified in advance according to the chemical properties of the passivation medium.

[0040] Fig.10 It is a schematic diagram of the hardware structure of an electronic device for implementing various embodiments of the present invention.

[0041] The hot-dip galvanizing passivation method provided in the embodiment of the present application can be applied to electronic devices. It will be appreciated by those skilled in the art that the electronic device structure involved in the embodiment of the present invention does not constitute a limitation on the electronic device, and the electronic device may include more or less components than shown, or combine certain components, or different component arrangements. In an embodiment of the present invention, the electronic device includes but is not limited to a laptop computer, a desktop computer, a workbench, a personal digital assistant, a server, a blade server, a mainframe computer, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices, and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples, and are not intended to limit the implementation of the embodiments of the present application described herein and / or required.

[0042] The electronic device may include a processor, an external memory interface, an internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, a wireless communication module, an audio module, a speaker, a microphone, a sensor module, buttons, a camera, a display, and a SIM card interface, etc.

[0043] It is to be understood that the structure illustrated in the embodiments of the present application does not constitute a specific limitation on the electronic device. In other embodiments of the present application, the electronic device may include more or fewer components than shown in the figure, or combine certain components, or split certain components, or arrange the components differently. The components shown in the figure may be implemented in hardware, software, or a combination of software and hardware.

[0044] The processor may include one or more processing units, for example, the processor may include a central processing unit (CPU), an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a memory, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural-network processing unit (NPU), etc. Among them, different processing units may be independent devices or integrated into one or more processors.

[0045] The processor can be the nerve center and command center of the electronic device. The controller can generate an operation control signal according to the instruction operation code and timing signal to complete the control of fetching and executing instructions.

[0046] A memory may also be provided in the processor for storing instructions and data. In some embodiments, the memory in the processor is a cache memory. The memory may store instructions or data that the processor has just used or is cyclically used. If the processor needs to use the instruction or data again, it may be directly called from the memory. This avoids repeated access, reduces the waiting time of the processor, and thus improves system efficiency.

[0047] The external memory interface can be used to connect an external memory card, such as a MicroSD card, to expand the storage capacity of the electronic device. The external memory card communicates with the processor through the external memory interface to implement data storage functions. For example, files such as music and videos can be saved in the external memory card.

[0048] The internal memory can be used to store computer executable program codes, which include instructions. The processor executes various functional applications and data processing of the electronic device by running the instructions stored in the internal memory. The internal memory may include a program storage area and a data storage area. The internal memory may include a high-speed random access memory and may also include a non-volatile memory, such as at least one disk storage device, a flash memory device, a universal flash storage (UFS), etc.

[0049] The wireless communication function of an electronic device can be realized through an antenna, a wireless communication module, a modem processor, and a baseband processor.

[0050] The wireless communication module can provide wireless communication solutions for electronic devices, including wireless local area networks (WLAN) (such as wireless fidelity (Wi-Fi) networks), Bluetooth (BT), global navigation satellite system (GNSS), frequency modulation (FM), near field communication (NFC), infrared technology (IR), etc.

[0051] Electronic devices can implement audio functions, etc. through audio modules, speakers, receivers, microphones, headphone jacks, and application processors.

[0052] Electronic devices can achieve shooting functions through ISP, camera, video codec, GPU, display and application processor.

[0053] Electronic devices can achieve display functions through GPU, display screen and application processor.

[0054] The GPU is a microprocessor for image processing that connects the display screen and the application processor. The GPU is used to perform mathematical and geometric calculations for graphics rendering. The processor may include one or more GPUs that execute program instructions to generate or change display information.

[0055] The display screen is used to display images, videos, etc. The display screen includes a display panel.

[0056] The storage medium provided in the present application stores a program product capable of implementing a hot-dip galvanizing passivation method.

[0057] The passivation method of hot-dip galvanizing includes: pre-setting at least two roller coaters and multiple passivation circulation tanks on the passivation production line, wherein each passivation circulation tank corresponds to a passivation medium; according to the user's passivation requirements and the chemical properties of the passivation medium, when the strip passes through the roller coater, according to the use condition logic of the roller coater, the corresponding roller coater is enabled for passivation or the current passivation mode is switched, wherein the roller coaters are pre-classified according to the chemical properties of the passivation medium.

[0058] In some possible embodiments, the subject matter of the present disclosure, namely, hot-dip galvanizing passivation method and system, can be implemented in the form of a program product, which includes a program code. When the program product is run on a terminal device, the program code is used to enable the terminal device to execute the steps according to various exemplary embodiments of the present disclosure described in the above “Exemplary Method” section of this specification.

[0059] The storage medium of the present disclosure can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0060] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A hot dip galvanizing passivation method, characterized in that: include: At least two roller coaters and a plurality of passivation circulation tanks are pre-arranged on the passivation production line, wherein each passivation circulation tank corresponds to a passivation medium; According to the user's passivation requirements and the chemical properties of the passivation medium, when the strip passes through the roller coater, the corresponding roller coater is enabled for passivation or the current passivation mode is switched according to the use condition logic of the roller coater, wherein the roller coaters are classified in advance according to the chemical properties of the passivation medium.

2. The hot-dip galvanizing passivation method according to claim 1, characterized in that: The classification of roller coaters according to the pharmaceutical characteristics of the passivation medium includes: According to the chromium-containing or chromium-free characteristics of the passivation medium agent, the roller coater is divided into a chromium-containing passivation roller coater and a chromium-free passivation roller coater. The chromium-containing passivation medium agent includes but is not limited to trivalent chromium passivation agent and trivalent chromium self-lubricating passivation agent; the chromium-free passivation medium agent includes but is not limited to chromium-free passivation agent, chromium-free fingerprint-resistant passivation agent, and chromium-free self-lubricating passivation agent.

3. The hot-dip galvanizing passivation method according to claim 1, characterized in that: According to the user's passivation requirements and the characteristics of the passivation medium, when the strip passes through the roller coater, according to the use condition logic of the roller coater, the corresponding roller coater is enabled for passivation or the current passivation mode is switched, including: When the hot-dip galvanizing production line is in the non-passivation passivation mode, all roller coaters are disabled at the same time; When the hot-dip galvanizing production line is passivated in chromium-free passivation mode, the chromium-free passivation roller coater is disabled, the chromium-free passivation circulation system is enabled, the chromium-free anti-fingerprint circulation system is disabled, and when the circulation pump is started and the passivation medium flow rate is detected to be ≥30L / min, the chromium-free passivation roller coater is automatically enabled; When the hot-dip galvanizing production line is passivated by chrome-free fingerprint-resistant passivation, the chrome-free passivation roller coater is disabled, the chrome-free passivation circulation system is disabled, and the chrome-free fingerprint-resistant circulation system is enabled. When the circulation pump is started and the flow rate of the passivation medium is detected to be ≥30L / min, the chrome-free passivation roller coater is automatically enabled; When the hot-dip galvanizing production line is passivated by trivalent chromium passivation, the chromium-free passivation roller coater is disabled, the trivalent chromium passivation circulation system is enabled, and the trivalent chromium self-lubricating passivation circulation system is disabled. After the circulation pump is started, when the passivation liquid medium volume is detected to be ≥30L / min, the chromium passivation roller coater is automatically enabled; When the passivation method of the hot-dip galvanizing production line is trivalent self-lubricating passivation, the chromium-free passivation roller coater is disabled, the trivalent chromium passivation circulation system is disabled, and the trivalent chromium self-lubricating passivation circulation system is enabled. After the circulation pump is started, when the passivation medium flow rate is detected to be ≥30L / min, the chromium-free passivation roller coater is automatically enabled.

4. The hot-dip galvanizing passivation method according to claim 3, characterized in that: The chrome-free passivation circulation system and the chrome-free fingerprint-resistant circulation system include a chrome-free fingerprint-resistant overflow solenoid valve, a chrome-free fingerprint-resistant liquid outlet solenoid valve, a chrome-free overflow solenoid valve, a chrome-free liquid outlet solenoid valve, a circulation pump, a chrome-free passivation circulation tank, a chrome-free fingerprint-resistant passivation circulation tank, pipelines and a tray; The process of enabling the chrome-free passivation circulation system and disabling the chrome-free fingerprint-resistant circulation system includes: closing the chrome-free fingerprint-resistant overflow solenoid valve, closing the chrome-free fingerprint-resistant liquid outlet solenoid valve, opening the chrome-free overflow solenoid valve, opening the chrome-free liquid outlet solenoid valve, and opening the circulation pump in sequence; The process of enabling the chrome-free fingerprint-resistant circulation system and disabling the chrome-free passivation circulation system includes: closing the chrome-free passivation overflow solenoid valve, closing the chrome-free passivation liquid outlet solenoid valve, opening the chrome-free fingerprint-resistant overflow solenoid valve, opening the chrome-free fingerprint-resistant liquid outlet solenoid valve, and turning on the circulation pump in sequence.

5. The hot-dip galvanizing passivation method according to claim 3, characterized in that: The trivalent chromium passivation circulation system and the trivalent chromium self-lubricating passivation circulation system include: a trivalent chromium self-lubricating overflow solenoid valve, a trivalent chromium self-lubricating liquid outlet solenoid valve, a trivalent chromium overflow solenoid valve, a trivalent chromium liquid outlet solenoid valve, a circulation pump, a trivalent chromium passivation circulation tank, a trivalent chromium self-lubricating passivation circulation tank, pipelines and a tray; The process of enabling the trivalent chromium passivation circulation system and disabling the trivalent chromium self-lubricating passivation circulation system includes: closing the trivalent chromium self-lubricating overflow solenoid valve, closing the trivalent chromium self-lubricating liquid outlet solenoid valve, opening the trivalent chromium overflow solenoid valve, opening the trivalent chromium liquid outlet solenoid valve, and opening the circulation pump in sequence; The process of enabling the trivalent chromium self-lubricating passivation circulation system and disabling the trivalent chromium passivation circulation system includes: closing the trivalent chromium overflow solenoid valve, closing the trivalent chromium liquid outlet solenoid valve, opening the trivalent chromium self-lubricating overflow solenoid valve, opening the trivalent chromium self-lubricating liquid outlet solenoid valve, and opening the circulation pump in sequence.

6. The hot-dip galvanizing passivation method according to claim 1, characterized in that: According to the passivation requirements of the user and the reagent characteristics of the passivation medium, when the strip passes through the roller coater, according to the use condition logic of the roller coater, before the corresponding roller coater is enabled for passivation or the current passivation mode is switched, the hot-dip galvanizing passivation method further includes: Strip spray cleaning, brush roller cleaning, electrolytic cleaning, brush roller cleaning, and rinsing water cleaning, among which, the spray cleaning conductivity is 25-55ms / cm, the brush roller current is 1-5A, the electrolytic cleaning conductivity is 35-65ms / cm, the rinsing water conductivity is ≤20us / cm, the spray alkali solution temperature is 70℃-90℃, the electrolytic alkali solution temperature is 70℃-90℃, and the rinsing water temperature is 60℃-75℃.

7. The hot-dip galvanizing passivation method according to claim 1, characterized in that: According to the passivation requirements of the user and the reagent characteristics of the passivation medium, when the strip passes through the roller coater, according to the use condition logic of the roller coater, before the corresponding roller coater is enabled for passivation or the current passivation mode is switched, the hot-dip galvanizing passivation method further includes: Annealing: preheating, soaking, slow cooling, fast cooling, entering the zinc pot, among which, the preheating plate temperature is 300℃-350℃, the soaking plate temperature is 700℃-840℃, the slow cooling plate temperature is 620℃-700℃, the fast cooling plate temperature is 450℃-540℃, and the plate temperature entering the zinc pot is 450℃-480℃.

8. A hot dip galvanizing passivation system, characterized in that: include: At least two roller coaters; Multiple passivation circulation tanks, each of which corresponds to a passivation medium; The roller coater control system is used to enable the corresponding roller coater for passivation or switch the current passivation mode according to the user's passivation requirements and the chemical properties of the passivation medium when the strip passes through the roller coater according to the use condition logic of the roller coater, wherein the roller coaters are classified in advance according to the chemical properties of the passivation medium.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the steps of the hot-dip galvanizing passivation method according to any one of claims 1 to 7 are implemented.

10. A storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the hot-dip galvanizing passivation method according to any one of claims 1 to 7 are implemented.

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