Metal heat treatment production line applied to deformed steel bars

Abstract

The invention provides a metal heat treatment production line applied to deformed steel bars, which comprises a pretreatment module used for derusting the deformed steel bars, placing the derusted deformed steel bars into a tank body and filling powder into the tank body; the heat treatment module is used for receiving the tank body filled with the powder and carrying out heat treatment on the deformed steel bar in the tank body by heating the tank body; the post-treatment module is used for carrying out surface deslagging on the deformed steel bar subjected to heat treatment and packaging the deformed steel bar subjected to surface deslagging; the heat control unit and the heating control unit are arranged in the heat treatment module, monitor the electric energy consumption of the heat treatment module in real time, calculate the actual heat production according to the electric energy consumption, calculate the theoretical heat production based on the parameters of the tank body, the powder and the deformed steel bar, compare the difference between the actual heat production and the theoretical heat production, and judge whether the heat treatment module is abnormal or not. The screw-thread steel processing equipment has the beneficial effects that the screw-thread steel processing equipment is connected in series automatically, so that the working efficiency is improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of metal processing, and particularly relates to a metal heat treatment production line applied to threaded steel. BACKGROUND

[0002] In order to improve the corrosion resistance of threaded steel, prolong the service life in humid, acid-base or salt mist environment, and improve the structural stability and safety, the threaded steel needs to be surface plated before use at present, the plating can prevent hydrogen embrittlement and stress corrosion cracking, meet the strict requirements of high durability engineering on material performance, and can endow the threaded steel with specific functionality or aesthetic effect according to needs, and is widely used in marine engineering, underground structure and high life infrastructure.

[0003] In order to realize the multi-element alloying function of threaded steel, the threaded steel needs to be surface plated and heat treated, in the prior art, the surface treatment of threaded steel depends on manual operation or scattered, non-integrated equipment combination, and there are problems of poor connection, low efficiency and large quality fluctuation in the links of taking and placing, rust removal, coating, heat treatment, pickling and packaging. SUMMARY

[0004] Therefore, the application aims to provide a metal heat treatment production line applied to threaded steel, so as to solve at least one of the above technical problems.

[0005] To achieve the above-mentioned purpose, the technical scheme of the application is as follows: A metal heat treatment production line applied to threaded steel, comprising: A pretreatment module for rust removal operation on threaded steel, placing the threaded steel after rust removal into a tank, and filling the tank with powder; A heat treatment module for receiving the tank after filling with powder, and heat treating the threaded steel in the tank by heating the tank; A post-treatment module for surface deslagging of the threaded steel after heat treatment, and packaging the threaded steel after surface deslagging; A heat control unit arranged in the heat treatment module, for monitoring the actual heat output of the heat treatment module in real time, calculating the theoretical heat output, and comparing the difference between the actual heat output and the theoretical heat output to determine whether the heat treatment module is abnormal; The pretreatment module, the heat treatment module and the post-treatment module are connected with an upper computer, and data interaction is carried out through the upper computer.

[0006] Further, the pretreatment module monitors the position of the threaded steel, the position of the tank, and the working state of the filling device for filling the tank with powder in real time, and sequentially starts the rust removal, handling and filling actions.

[0007] Further, the working process of the pre-processing module includes: detecting the current position of the threaded steel and the tank body through a position sensor or a photoelectric switch, moving the threaded steel and the tank body according to the current position, and detecting whether the threaded steel and the tank body are in place after the movement is completed; If not, detecting the current position of the threaded steel and the tank body, and moving the threaded steel and the tank body according to the current position; otherwise, confirming whether the working state of the filling device is normal; If the working state is normal, notifying the filling device to start the filling action, moving the tank body from the pre-processing module to the temporary storage position after the filling action is completed, and notifying the heat treatment module; otherwise, notifying the worker and stopping the working of the pre-processing module.

[0008] Further, the post-processing module monitors the position of the threaded steel, the temperature of the threaded steel, and the state of the cleaning device for surface slag removal in real time, and sequentially starts the lifting, slag removal, and packaging actions.

[0009] Further, the working process of the post-processing module includes: The post-processing module detects the temperature of the heat-treated threaded steel through a temperature sensor, and determines whether the temperature of the threaded steel meets the cleaning requirement; If not, notifying the heat treatment module to suspend the processing of the next batch of threaded steel, and sending the current batch of threaded steel into the heat treatment module to heat to meet the cleaning requirement; Otherwise, notifying the cleaning device to prepare to receive the threaded steel, and notifying the heat treatment module to start the processing of the next batch of threaded steel, detecting the current position of the threaded steel through a position sensor, and notifying the lifting device to lift the threaded steel from the current position to the cleaning device.

[0010] Further, the working process of the post-processing module further includes: The post-processing module detects the temperature of the threaded steel in the cleaning device through a temperature sensor, and determines whether the surface slag removal work of the threaded steel is completed according to the temperature of the threaded steel; If the temperature of the threaded steel is higher than twice the temperature of the cleaning liquid in the cleaning device, the surface slag removal work is not completed, and the surface slag removal work is continued; Otherwise, the surface slag removal work is completed, the current position of the threaded steel is detected through a position sensor, and the lifting device is notified to lift the threaded steel from the current position to the packaging device.

[0011] Further, the working process of the heat treatment module includes: The heat treatment module performs corresponding operations according to the notifications sent by the post-processing module; If the notification sent by the post-processing module is to suspend, the transport vehicle is notified to go to the post-processing module to receive the threaded steel that does not meet the cleaning requirements and load the threaded steel into the tank for heating; if the notification sent by the post-processing module is to start, it is judged whether the notification from the pre-processing module is received; If the notification is not received, the notification is waited for; otherwise, the transport vehicle is notified to go to the temporary storage position to receive the tank, the tank is moved to the heat treatment module, and the heat treatment operation is performed.

[0012] Further, the calculation process of the theoretical heat production of the heat treatment module is as follows: Q 源理论 =Q 罐体 +Q 工件 +Q 石英砂 +Q 损耗 ; Wherein, Q 罐体 is the theoretical heat absorption of the tank, Q 工件 is the theoretical heat absorption of the workpiece, Q 石英砂 is the theoretical heat absorption of the quartz sand, and Q 损耗 is the heat loss, including the heat absorbed by the hearth and the lost heat.

[0013] Further, the calculation process of the theoretical heat absorption of the tank, the workpiece and the quartz sand is as follows: ; Wherein, c is the specific heat capacity of the material x, indicating the heat required to raise 1℃ of the material x per unit mass, m is the mass of the material x, t is the final temperature of x after heat absorption, t0 is the initial temperature of x, and x is any of the tank, the workpiece and the quartz sand.

[0014] Further, the calculation process of the actual heat production of the heat treatment module is as follows: ; Wherein, P is the heat source power, t is the time, is the conversion efficiency.

[0015] Compared with the prior art, the metal heat treatment production line for threaded steel has the following beneficial effects: The threaded steel processing equipment is connected in an automatic manner, the work efficiency is improved, the modular design facilitates subsequent line expansion or process modification, the utilization rate of the plant space and the powder material is improved, the labor intensity of the workers is reduced, and the transportation cost in the original dispersed processing process is saved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of the disclosure, are included to provide a further understanding of the application, and are incorporated in and constitute a part of this application. The illustrations, together with the description, serve to explain the application, but are not intended to limit the application in any way. In the drawings: Figure 1 The overall structure schematic diagram of the threaded steel processing production line according to the embodiment of the present application; Figure 2 The overall structure schematic diagram of the threaded steel processing production line according to the embodiment of the present application; Figure 1 The enlarged schematic diagram of the partial structure at the positions of reference numerals 1, 2 and 4 in the embodiment of the present application; Figure 3 The enlarged schematic diagram of the partial structure at the positions of reference numerals 1, 2 and 4 in the embodiment of the present application; Figure 1 The enlarged schematic diagram of the partial structure at the positions of reference numerals 5 and 6 in the embodiment of the present application; Figure 4 The enlarged schematic diagram of the partial structure at the positions of reference numerals 1, 2 and 4 in the embodiment of the present application; Figure 1 The enlarged schematic diagram of the partial structure at the position of reference numeral 3 in the embodiment of the present application; Figure 5 The enlarged schematic diagram of the partial structure at the position of reference numeral 3 in the embodiment of the present application; Figure 1 The enlarged schematic diagram of the partial structure at the position of reference numeral 7 in the embodiment of the present application.

[0017] Reference numeral explanation: 1, unit tank; 2, furnace body; 3, rust removal device; 4, filling device; 5, cleaning device; 6, packing device; 7, placement area. DETAILED DESCRIPTION

[0018] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second" and the like can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0020] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] like Figures 1 to 5 As shown: A metal heat treatment production line for rebar, comprising: The pretreatment module is used to remove rust from the rebar, placing the rust-removed rebar into the tank and filling the tank with powder. The heat treatment module is used to receive the tank after it has been filled with powder and to heat treat the threaded steel inside the tank by heating the tank. The post-processing module is used to remove slag from the surface of the heat-treated rebar and to package the rebar after slag removal. The heat control unit, located within the heat treatment module, is used to monitor the actual heat generation of the heat treatment module in real time, calculate the theoretical heat generation, compare the difference between the actual heat generation and the theoretical heat generation, and determine whether the heat treatment module has malfunctioned. The pre-processing module, heat treatment module, and post-processing module are all connected to the host computer and interact with each other through the host computer.

[0023] In some embodiments, the preprocessing module, heat treatment module, and postprocessing module each have a built-in corresponding clock control unit. The clock control units in the preprocessing module, heat treatment module, and postprocessing module are all connected to the host computer and interact with data through the host computer.

[0024] The cycle control unit is used to control the working cycle of the corresponding module. The working cycle is the working sequence of each device in each module, as well as the working sequence between modules.

[0025] The host computer interacts with the cycle control unit and sensors through a communication interface. The host computer is either a SCADA system or an industrial control computer (IPC).

[0026] The working cycle data exchanged between the cycle control unit and the host computer includes: Status information: The module displays the current process progress (start / in progress / completed), cycle time status (cycle time, waiting time, timeout information), and equipment operating status (running, standby, fault).

[0027] Process parameters: Temperature, time, atmosphere pressure, etc. set value and measured value during heat treatment, speed, position parameters, detection signal before and after treatment.

[0028] Instructions and feedback: The command of starting / stop / reset / switching process mode issued by the host computer, and the execution confirmation signal feedback by the beat control unit.

[0029] The host computer ensures the rhythm matching between the pre-treatment, heat treatment and post-treatment through the working beat data of each module, avoids workpiece accumulation or idling, and improves the overall efficiency of the production line by adjusting the beat setting of each module.

[0030] In some embodiments, each module of the above production line comprises the following device respectively: A rust removal device 3 and a filling device 4 are arranged in the pre-treatment module, the rust removal device 3 is used for rust removal operation on the threaded steel, and the filling device 4 is used for placing the threaded steel after rust removal into the tank body composed of a plurality of unit tanks 1, and filling the tank body with powder, and the powder is preferably quartz sand; A furnace body 2 is arranged in the heat treatment module for heat treatment of the threaded steel; A cleaning device 5 and a packaging device 6 are arranged in the post-treatment module, the cleaning device 5 is used for surface slag removal of the threaded steel after heat treatment, and the packaging device 6 is used for packaging the threaded steel after slag removal.

[0031] In some embodiments, the production line further comprises a placing area 7, the placing area 7 is provided with two, and is arranged at the inlet end and the outlet end of the production line respectively, the placing area 7 at the inlet end is used for placing the threaded steel to be treated, and the placing area 7 at the outlet end is used for placing the threaded steel after treatment; The worker unloads the threaded steel to be treated from the carrying truck and places it in the placing area 7 at the inlet end, then loads part of the threaded steel from the placing area 7 at the inlet end into the rust removal device 3 for rust removal operation, and places the packaged threaded steel in the placing area 7 at the outlet end.

[0032] The beat control unit of the pre-treatment module monitors the threaded steel position, tank position, and state of the filling device 4 for filling powder in real time, and sequentially starts the rust removal, handling and filling actions.

[0033] The difference between the actual heat production and the theoretical heat production is compared to determine whether the furnace body 2 is abnormal as follows: The data that can be known before the heating furnace starts are the weights of the workpiece, quartz sand, and tank body, the initial temperature, and the target temperature, at which time the total heat absorption can be calculated, and the loss is estimated according to factors such as the structure of the furnace body 2 and the heat preservation condition (in this embodiment, the loss is estimated at 5% of the total heat absorption, and this value will be adjusted according to the loss during the use of the furnace body 2 structure later); In the calculation of the actual heat production and the theoretical heat production, the heat production = heat absorption + loss. Since the heat absorption cannot be consistent every time the furnace is started, the total heat absorption will not be consistent every time due to the different loading amounts and temperatures, and the temperature in the hearth is also not consistent, so the judgment basis is not an accurate value. In this embodiment, the heat absorption is estimated at ±8%, and this estimated value will be adjusted according to the loss during the use of the furnace body 2 structure later; If the value is lower or higher than the range, the parameter setting needs to be checked or the infrared temperature measuring instrument needs to be calibrated. Specifically, under the same conditions, if the value is higher than the judgment range, it indicates that the heat absorption increases, and it is judged that the temperature measurement is inaccurate or the heat preservation effect and the heating effect are poor; if the value is lower than the judgment range, it indicates that the heat absorption decreases, and it is judged that the temperature measurement is inaccurate.

[0034] The working process of the pretreatment module includes: The current positions of the threaded steel and the tank body are detected by a position sensor or a photoelectric switch, and the threaded steel and the tank body are moved according to the current positions. After the movement is completed, it is detected whether the threaded steel and the tank body are in place. If not, the current positions of the threaded steel and the tank body are detected, and the threaded steel and the tank body are moved according to the current positions. Otherwise, it is confirmed whether the working state of the filling device 4 is normal. If the working state is normal, the beat control unit of the pretreatment module notifies the filling device 4 to start the filling action. After the filling action is completed, the tank body is moved from the pretreatment module to the temporary storage position, and the heat treatment module is notified. Otherwise, the worker is notified and the work of the pretreatment module is stopped.

[0035] In some embodiments, the beat control unit of the pretreatment module controls the devices in the pretreatment module to perform the following operations: A batch of threaded steels are arranged one by one, and the beat control unit of the pretreatment module notifies the threaded steels arranged one by one to be transported to the rust removal device 3 by the transport vehicle to perform the rust removal operation, and then notifies the rust removal device 3 to start. After the rust removal operation is completed, the threaded steel is hoisted into the tank combining position of the filling device 4. In the tank combining position, a plurality of unit tanks 1 are combined into a tank body, and the threaded steel is placed in the tank body. The combination of the tank body is completed by the tank combining vehicle of the filling device 4. The tank combining vehicle is provided with a plurality of tank combining vehicles, each tank combining vehicle corresponds to a unit tank 1, and adjacent two tank combining vehicles move towards each other to combine two corresponding unit tanks 1.

[0036] After the current processing action is completed, the pre-treatment module's beat control unit outputs a "pre-treatment completion" signal and sends it to the heat treatment module's beat control unit, and at the same time triggers the conveying device to push the filled can body to the next station. When the can body leaves the pre-treatment module, the pre-treatment module's beat control unit controls the devices in the pre-treatment module to return to the original position and resets the monitoring data to prepare for the processing of the next batch of threaded steel.

[0037] When the can body is combined, the two unit cans 1 are respectively installed on two can combining vehicles. The clamping plates on the can combining vehicles clamp the open ends of the unit cans 1, and the other ends of the unit cans 1 are inserted into the positioning barrels. The two can combining vehicles move towards each other, the threaded steel is inserted into the inside of the unit cans 1, and the open ends of the two unit cans 1 are connected to each other to form the can body.

[0038] When the powder is added, the can combining vehicle moves to a specified position and adds powder raw materials into the can body, and then moves to a can combining position. The can body is moved to the buffer assembly by the second lifting assembly. When the can body is disassembled, the positioning barrels of the can combining vehicles are aligned with the can body. The two can combining vehicles move towards each other, the arc-shaped clamping plates clamp the open ends of the unit cans 1, and after the bayonet of the can body is opened, the two can combining vehicles move in opposite directions, the threaded steel comes out of the two unit cans 1, and the can combining vehicle returns to the can combining position.

[0039] The working process of the post-treatment module includes: The post-treatment module detects the temperature of the threaded steel after heat treatment through the temperature sensor, and judges whether the temperature of the threaded steel meets the cleaning requirements; If not, the heat treatment module is notified to pause the processing of the next batch of threaded steel, and the current batch of threaded steel is sent into the heat treatment module to be heated to meet the cleaning requirements; Otherwise, the cleaning device 5 is notified to prepare to receive the threaded steel, and the heat treatment module is notified to start processing the next batch of threaded steel. The current position of the threaded steel is detected by the position sensor, and the lifting device is notified to lift the threaded steel from the current position to the cleaning device 5.

[0040] The working process of the post-treatment module also includes: The post-treatment module detects the temperature of the threaded steel in the cleaning device 5 through the temperature sensor, and judges whether the surface deslagging work of the threaded steel is completed according to the temperature of the threaded steel; If the temperature of the threaded steel is higher than twice the temperature of the cleaning liquid in the cleaning device 5, the surface deslagging work is not completed, and the surface deslagging work is continued; Otherwise, the surface deslagging work is completed, the current position of the threaded steel is detected by the position sensor, and the lifting device is notified to lift the threaded steel from the current position to the packaging device 6.

[0041] The working process of the heat treatment module includes: The heat treatment module performs corresponding operation according to the received notification sent by the post-treatment module; If the notification sent by the post-treatment module is suspension, the transport vehicle is notified to go to the post-treatment module to receive the threaded steel that does not meet the cleaning requirement and load the threaded steel into the tank for heating; if the notification sent by the post-treatment module is start, it is judged whether the notification of the pre-treatment module is received; If the notification is not received, the notification is waited; otherwise, the transport vehicle is notified to go to the temporary storage position to receive the tank, the tank is moved to the heat treatment module, and the heat treatment operation is performed.

[0042] The calculation process of the theoretical heat production of the heat treatment module is as follows: Q 源理论 =Q 罐体 +Q 工件 +Q 石英砂 +Q 损耗 ; Wherein, Q 罐体 is the theoretical heat absorption of the tank, Q 工件 is the theoretical heat absorption of the workpiece, Q 石英砂 is the theoretical heat absorption of the quartz sand, and Q 损耗 is the heat loss, which includes the heat absorbed by the hearth and the lost heat.

[0043] The calculation process of the theoretical heat absorption of the tank, the workpiece and the quartz sand is as follows: ; Wherein, c is the specific heat capacity of the material x, indicating the heat required to raise the temperature of unit mass of the material x by 1℃, m is the mass of the material x, t is the final temperature of x after heat absorption, t0 is the initial temperature of x, and x is any of the tank, the workpiece and the quartz sand.

[0044] The calculation process of the actual heat production of the heat treatment module is as follows: ; Wherein, P is the heat source power, t is the time, is the conversion efficiency, specifically 93%.

[0045] In some embodiments, the relationship and architecture among the heat treatment module, the pre-treatment module and the post-treatment module are as follows: The main components of each module are as follows: Upper monitoring layer: composed of upper system, HMI human-computer interface, database server, etc.

[0046] Control layer: mainly composed of various PLCs (programmable logic controllers).

[0047] Device layer: frequency converter, sensor, actuator, etc.

[0048] Communication networks: Industrial Ethernet, fieldbus.

[0049] The core hardware devices for each module and their selection / configuration are as follows: PLC system: Select one of the following three PLCs: Siemens S7-1500 series 1511-1, S7-1200 series 1215C, or S7-200SMART series SR40.

[0050] Heat treatment module: The heating method has been changed from the original resistance heating to medium frequency heating. The control of the heat treatment module has also been changed from the original power regulator to a medium frequency heating control system. Analog control or communication control can be selected. In this embodiment, Modbus RTU fieldbus control is selected. Compared with analog control, this control method is simpler to wire and can transmit more data.

[0051] Based on theoretical heat absorption calculations, the workpiece absorbs approximately 51% of the total heat, the tank and quartz sand absorb approximately 44% of the total heat (calculated based on the weight of the tank, the amount of workpiece, and the amount of quartz sand), and the heat lost is approximately 5% of the total heat. The heat generated by the heat source = total heat absorbed + heat lost = heat absorbed by the workpiece + heat absorbed by the quartz sand + heat absorbed by the tank + heat lost.

[0052] According to the mechanical design structure, in this embodiment, the thermal efficiency of medium frequency heating can reach more than 90%, while the thermal efficiency of resistance band heating is only 80%. The energy consumption and heating speed of medium frequency heating are both better than those of resistance band heating.

[0053] Human-Machine Interface: In this embodiment, Kunlun Tongtai touch screen is used as the on-site HMI hardware.

[0054] Sensors and actuators: Resistance heating heats the entire furnace chamber, resulting in uniform temperature. Temperature can be measured using thermocouples. Medium-frequency heating, on the other hand, involves a coil directly heating the tank. The tank temperature is higher than the furnace temperature. In this case, the temperature measured by thermocouples in the furnace chamber deviates significantly from the actual temperature of the tank. Therefore, infrared measurement is used to directly measure the tank temperature.

[0055] The power acquisition PLCSR40 communicates with the multi-functional power meter via fieldbus (MODBUS protocol) to transmit the real-time data of the power meter corresponding to each device to the area PLC1511-1. After the upper system collects the data from 1511-1, it first saves the data to the SQL Server database and then counts the power consumption according to the device and area.

[0056] The heating furnace calculates the current theoretical power consumption according to the weight, specific heat, initial temperature, actual measured temperature, loss and other parameters of the workpiece, quartz sand and tank body. The specific basis is the law of conservation of energy, the heat generated by the heat source = the heat absorbed by the workpiece + the heat absorbed by the quartz sand + the heat absorbed by the tank body + the loss (including the heat absorbed by the hearth and the heat of the residual), which is too large as a process progress judgment basis, but it can completely meet the requirements as a judgment basis for whether the device is abnormal and whether the process is abnormal. Compared with relying on human to check the sealing condition of the furnace body 2 and other factors, the algorithm can directly judge the occurrence of abnormal conditions through electric energy metering.

[0057] Among them, the process rhythm, electric energy statistics, data interaction and data recording functions are completed by the PLC (1151-1 or 1215C) of each area, and the single machine function of each device is completed by the corresponding SR40.

[0058] Process rhythm control: The rhythm of each process in the line body is controlled by the PLC (1151-1 or 1215C) of each area, which communicates with the SR40 of each process through industrial Ethernet.

[0059] Electric energy statistics: Energy consumption cost accounts for a large proportion in the cost of zinc infiltration. By monitoring, recording and analyzing the electric energy consumption of each process and device in real time, the result can be used as a judgment basis for whether the device is abnormal, and also as a judgment basis for whether the process of the device is abnormal. It is also the basis for cost accounting.

[0060] Data recording: The key data of the process need to be kept for a long time, such as zinc addition, process temperature, zinc infiltration process time, furnace loading capacity and other data.

[0061] Finally, it should be pointed out that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit it; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the claims and description of the present application.

[0062] The above is only the preferred embodiment of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A metal heat treatment production line applied to threaded steel, characterized in that, The application relates to a metal heat treatment production line applied to threaded steel. The front treatment module is used for rust removal operation of the threaded steel, placing the threaded steel after rust removal into a tank body, and filling powder into the tank body. The heat treatment module is used for receiving the tank body after filling of the powder, and heat treating the threaded steel in the tank body by heating the tank body. The post-treatment module is used for surface slag removal of the threaded steel after heat treatment, and packaging the threaded steel after surface slag removal. The heat control unit arranged in the heat treatment module is used for real-time monitoring of actual heat production of the heat treatment module, calculation of theoretical heat production, comparison of differences between the actual heat production and the theoretical heat production, and judgment of whether the heat treatment module is abnormal. The front treatment module, the heat treatment module and the post-treatment module are connected with an upper computer, and data interaction is carried out through the upper computer.

2. The metal heat treatment production line applied to threaded steel according to claim 1, wherein: The front treatment module is used for real-time monitoring of threaded steel position, tank body position, working state of a filling device used for filling powder into the tank body, and sequentially starting rust removal, carrying and filling actions.

3. A metal heat treatment line for threaded steel according to claim 2, characterized in that, The working process of the front treatment module comprises the following steps: The current positions of the threaded steel and the tank body are detected through a position sensor or a photoelectric switch, and the threaded steel and the tank body are moved according to the current positions. If the threaded steel and the tank body are not in place, the current positions of the threaded steel and the tank body are detected, and the threaded steel and the tank body are moved according to the current positions. If the working state of the filling device is normal, the filling device is informed to start the filling action. If the working state of the filling device is abnormal, the working personnel are informed and the working process of the front treatment module is stopped.

4. The metal heat treatment production line applied to threaded steel according to claim 1, wherein:

5. A metal heat treatment line for threaded steel according to claim 4, characterized in that, The post-treatment module is used for real-time monitoring of threaded steel position, threaded steel temperature, state of a cleaning device used for surface slag removal, and sequentially starting hoisting, slag removal and packaging actions. The working process of the post-treatment module comprises the following steps: The temperature of the threaded steel after heat treatment is detected through a temperature sensor, and whether the threaded steel temperature meets the cleaning requirement is judged. If the threaded steel temperature does not meet the cleaning requirement, the heat treatment module is informed to pause the treatment of the next batch of threaded steel, and the current batch of threaded steel is sent into the heat treatment module to be heated to meet the cleaning requirement.

6. The metal heat treatment production line for threaded steel according to claim 4, characterized in that, If the threaded steel temperature meets the cleaning requirement, the cleaning device is informed to be ready to receive the threaded steel, the heat treatment module is informed to start the treatment of the next batch of threaded steel, the current position of the threaded steel is detected through a position sensor, and the hoisting device is informed to hoist the threaded steel from the current position to the cleaning device. The working process of the post-treatment module further comprises the following steps: The temperature of the threaded steel in the cleaning device is detected through a temperature sensor, and whether the surface slag removal work of the threaded steel is completed is judged according to the threaded steel temperature. If the threaded steel temperature is higher than twice the temperature of the cleaning liquid in the cleaning device, the surface slag removal work is not completed, and the surface slag removal work is continuously carried out.

7. The metal heat treatment production line for threaded steel according to claim 1, characterized in that, If the threaded steel temperature is not higher than twice the temperature of the cleaning liquid in the cleaning device, the surface slag removal work is completed, the current position of the threaded steel is detected through a position sensor, and the hoisting device is informed to hoist the threaded steel from the current position to the packaging device. The working process of the heat treatment module comprises the following steps: The threaded steel is heated to a predetermined temperature, and the threaded steel is moved to the post-treatment module after the threaded steel is heated to the predetermined temperature. The heat treatment module performs corresponding operation according to the received notification sent by the post-processing module; If the notification sent by the post-processing module is to suspend, the transport vehicle is notified to go to the post-processing module to receive the deformed threaded steel that does not meet the cleaning requirements and load the threaded steel into the tank for heating; if the notification sent by the post-processing module is to start, it is determined whether the notification from the pre-processing module is received; If the notification is not received, the notification is waited; otherwise, the transport vehicle is notified to go to the temporary storage position to receive the tank, move the tank to the heat treatment module, and perform the heat treatment operation.

8. The metal heat treatment production line for threaded steel according to claim 1, characterized in that, The calculation process of the theoretical heat production of the heat treatment module is as follows: Q 源理论 =Q 罐体 +Q 工件 +Q 石英砂 +Q 损耗 ; wherein Q 罐体 is the theoretical heat absorption of the furnace body, Q 工件 is the theoretical heat absorption of the workpiece, Q 石英砂 is the theoretical heat absorption of the quartz sand, Q 损耗 is the heat loss, which includes the heat absorbed by the hearth and the heat lost.

9. A metal heat treatment line for threaded steel according to claim 8, characterized in that, The calculation process of the theoretical heat absorption of the tank, the workpiece and the quartz sand is as follows: ； Wherein, c is the specific heat capacity of the substance x, indicating the heat required to raise the temperature of unit mass of substance x by 1℃, m is the mass of substance x, t is the final temperature of x after heat absorption, t0 is the initial temperature of x, and x is any of the tank, the workpiece and the quartz sand.

10. The metal heat treatment production line for threaded steel according to claim 1, characterized in that, The calculation process of the actual heat production of the heat treatment module is as follows: ； where P is the heat source power, t is time, is the conversion efficiency.

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