阅读说明：本技术 一种紫铜直管退火的装置及方法 (Red copper straight pipe annealing device and method ) 是由 明少航 胡晓磊 王磊 李强 郭渊 梁廷彰 金怀庆 于 2021-07-16 设计创作，主要内容包括：本发明提出的是一种紫铜直管退火的装置及方法。主要由辊轮、感应线圈及台架、电源及控制柜和除尘净化装置组成,在辊轮输送线侧部设有一组感应线圈及台架以及电源及控制柜和除尘净化装置；辊轮用于管件的转运,感应线圈及台架为退火工艺的主要执行装置,电源及控制柜作为退火装置的主控装置,并为退火工艺提供输出电源,除尘净化装置用于装置运行过程中烟尘的净化处理。退火方法包括上料缓存、辊轮传输、退火工艺、下料缓存四道工序,管件首先进入上料缓存工位,再通过上料机构进入辊轮输送,由辊轮输送线转运到退火工位,执行退火工艺,退火结束后的管件由辊轮输送线转运到下料工位处,并通过下料机构进入下料缓存架。适宜作为紫铜直管退火应用。(The invention provides a red copper straight pipe annealing device and method. The device mainly comprises a roller, an induction coil, a rack, a power supply, a control cabinet and a dust removal and purification device, wherein a group of induction coils, the rack, the power supply, the control cabinet and the dust removal and purification device are arranged on the side part of a roller conveying line; the roller is used for the transportation of pipe fitting, and induction coil and rack are the main execution device of annealing process, and power and switch board are as annealing device's main control unit to for annealing process provides output power, dust removal purification device is used for the purification treatment of device operation in-process smoke and dust. The annealing method comprises four procedures of feeding caching, roller transmission, annealing process and blanking caching, wherein the pipe fitting firstly enters a feeding caching station, then enters a roller transmission station through a feeding mechanism, is transported to the annealing station through a roller transmission line, executes the annealing process, and is transported to a blanking station through the roller transmission line after annealing and enters a blanking caching frame through a blanking mechanism. The method is suitable for annealing the red copper straight pipe.)

1. A red copper straight pipe annealing device is characterized in that: the device mainly comprises a roller (1), an induction coil and a rack (2), a power supply and control cabinet (3) and a dust removal and purification device (4), wherein a group of induction coil and rack (2) and power supply and control cabinet (3) are arranged on the lateral part of a roller (1) conveying line, and the dust removal and purification device (4) is arranged on one side of the induction coil and rack (2); wherein, running roller (1) is used for the transportation of pipe fitting, and induction coil and rack (2) are annealing process's main execution device, and power and switch board (3) are as annealing device's main control unit to for annealing process provides output power, dust removal purification device (4) are used for the purification treatment of device operation in-process smoke and dust.

2. The device for annealing the red copper straight pipe according to claim 1, wherein:

the induction coil and the rack (2) comprise an induction coil (2.1) and a rack, the lower part of the rack is provided with a position adjusting rotary wheel (2.2) and a telescopic cylinder (2.3), and the upper part of the rack is provided with the induction coil (2.1) and a heating inductor; the heating inductor adopts a quick replacement station to meet the requirements of pipe fitting changes of different specifications, and the induction coil (2.1) adopts a prefabricated part assembly type structure to facilitate maintenance and replacement; the induction coil (2.1) is formed by integrally winding a large-section rectangular copper pipe, and cooling water is introduced into the pipe; in order to protect the insulating strength of the induction coil, the surface of the induction coil (2.1) is coated with moisture-proof insulating enamel; be equipped with position control spinning wheel (2.2) on the rack and be manual elevating gear to install scale and upper and lower spacing protection mechanism, under manual mode, adjustment induction coil (2.1) position makes and treats that heating pipe spare is in induction coil (2.1) central point and puts, simultaneously, can be according to pipe fitting diameter parameter, through telescopic cylinder (2.3) switching induction coil and rack (2).

3. The device for annealing the red copper straight pipe according to claim 1, wherein:

the power of the induction heating power supply of the heating inductor is generally calculated according to the following formula:

wherein P represents the power (unit: kW), G represents the weight (unit: kg) of the pipe to be heated, and T represents the weight of the pipe to be heated₂The target heating temperature (unit:. degree. C.) of the pipe, T₁Denotes the initial temperature of the pipe (unit:. degree. C), t denotes the heating takt time (unit: sec), C denotes the average specific heat of the metal to be heated (unit: kJ/(k)g ℃)) and for red copper, C ═ 0.394 kJ/(kg ℃), the heating efficiency η took 0.6.

4. The device for annealing the red copper straight pipe according to claim 1, wherein:

the device for annealing the red copper straight pipe also comprises a temperature control system, wherein the temperature control system mainly comprises an infrared thermometer, a PLC (programmable logic controller) and a digital sampling module, and is in data communication with a heating power supply to complete heating temperature closed-loop control; that is, when the actual temperature of the pipe is detected to be higher than the set value, the heating power supply will automatically reduce the output power; on the contrary, when the actual temperature of the pipe fitting is detected to be lower than the set value, the heating power supply automatically improves the output power, and the temperature of the pipe fitting to be heated is ensured to meet the process requirements through the mechanism.

5. A method for annealing a red copper straight pipe is characterized by comprising the following steps: the device for annealing the red copper straight pipe according to any one of claims 1 to 4, wherein the method for annealing the red copper straight pipe comprises four working procedures of feeding caching, roller transmission, annealing process and blanking caching, and the specific flow is as follows: the pipe fitting at first gets into material loading station buffer memory, gets into the running roller through feed mechanism and carries again, transports the transfer chain by the running roller and transports the annealing station, carries out annealing process, and the pipe fitting after the annealing is transported the transfer chain by the running roller and is transported unloading station department to get into unloading buffer memory frame through unloading mechanism.

6. The method for annealing the red copper straight pipe according to claim 5, wherein the method comprises the following steps:

the annealing process of the red copper straight pipe adopts a continuous heating mode, namely, the pipe fittings are transported and heated on a roller wheel at the same time, and a temperature control system is designed, so that closed-loop control on the heating temperature can be realized, and the heating temperature is ensured to meet the process requirements; the pipe fitting heating temperature is adjusted by controlling the running speed of the roller and the power output power, when the pipe fitting heating interval is finished, the power output power is stopped, the normal running speed of the roller is recovered, and the heated pipe fitting is transported to the blanking station as soon as possible.

7. The method for annealing the red copper straight pipe according to claim 5, wherein the method comprises the following steps:

the operation mode of the red copper straight pipe annealing method is divided into an automatic mode and a manual mode, and the specific flow is as follows:

in an automatic mode, the system automatically adapts annealing process parameters such as power output power and running speed of rollers according to task information such as pipe diameter, thickness, length, stress relief position and temperature requirement issued by an information system, and calls an induction coil with matched specification parameters to finish a stress relief process, and the automatic mode is mainly used for large-batch and standard operation of pipe fitting specifications and the like, so that the productivity can be remarkably improved and the working environment can be improved;

in a manual mode, according to the requirements of pipe diameters, thicknesses, temperatures and the like of pipe fittings, the output power of a power supply is manually set, an induction coil matched with specification parameters is selected, a roller is controlled to operate to transfer the pipe fittings from a loading station to a stress relieving station, an annealing process is executed, after the annealing process is finished, the roller is controlled to operate to transfer the pipe fittings to a blanking station, and the manual mode is mainly used for the conditions of small-batch and temporary tasks of pipe fittings specifications and the like, and compared with an automatic mode, the flexibility and the efficiency are higher.

Technical Field

The invention relates to hardness adjustment, plasticity optimization and internal stress elimination of a red copper straight pipe in the field of materials, in particular to a device and a method for annealing the red copper straight pipe.

Background

Annealing is a heat treatment process for metals, which refers to slowly heating the metal to a certain temperature, holding for a sufficient time, and then cooling at a suitable rate. The purpose is to reduce hardness and improve machinability; the residual stress is eliminated, the size is stabilized, and the deformation and crack tendency is reduced; refining grains, adjusting the structure and eliminating the structure defects.

Red copper (i.e. pure copper) has excellent electrical conductivity, thermal conductivity and plasticity and good corrosion resistance, and is widely applied in the industries such as electronic industry, instruments and high-voltage switches, and the like, and the requirements on the surface hardness and the internal grain size of a red copper product in industrial production are severe, and the requirements cannot be met by a common annealing treatment process and a common annealing treatment device.

Disclosure of Invention

The invention provides a device and a method for annealing a red copper straight pipe, aiming at solving the problems of reducing the hardness, improving the plasticity, eliminating the internal stress and refining the crystalline structure of the red copper straight pipe. The method adopts an induction coil metal heating mode to anneal the red copper straight pipe through four procedures of feeding caching, roller transmission, annealing process and blanking caching, and solves the technical problem of red copper straight pipe annealing.

The technical scheme adopted by the invention for solving the technical problem is as follows:

a device for annealing a red copper straight pipe mainly comprises a roller, an induction coil, a rack, a power supply, a control cabinet and a dust removal and purification device, wherein a group of induction coils, the rack, the power supply and the control cabinet are arranged at the side part of a roller conveying line, and the dust removal and purification device is arranged at one side of the induction coils and the rack; the roller is used for transferring the pipe fittings, the induction coil and the rack are main executing devices of the annealing process, the power supply and the control cabinet are used as main control devices of the annealing device and provide output power supplies for the annealing process, and the dust removal and purification device is used for purifying smoke dust in the operation process of the device.

In order to further solve the technical problems to be solved by the invention, the induction coil and the rack comprise the induction coil and the rack, the position adjusting rotary wheel and the telescopic cylinder are arranged at the lower part of the rack, the induction coil and the heating inductor are arranged at the upper part of the rack, the heating inductor adopts a quick replacing station to meet the change of pipe fittings with different specifications, and the induction coil adopts a prefabricated part assembly type structure to facilitate maintenance and replacement; the induction coil is formed by integrally winding a large-section rectangular copper pipe, and cooling water is introduced into the pipe; in order to protect the insulating strength of the induction coil, the surface of the induction coil is coated with moisture-proof insulating enamel; the position adjusting rotary wheel is a manual lifting device and is provided with a graduated scale and an upper limiting protection mechanism and a lower limiting protection mechanism, the position of the induction coil is adjusted in a manual mode, the pipe fitting to be heated is located at the center of the induction coil, and meanwhile, the induction coil and the rack can be switched through the telescopic cylinder according to pipe fitting diameter parameters.

Further, the red copper straight pipe annealing method mainly comprises four working procedures of material loading caching, roller transmission, annealing process and material unloading caching, and the specific flow is as follows: the pipe fitting firstly enters a feeding cache station, then enters a roller for conveying through a feeding mechanism, is transported to an annealing station through a roller conveying line, executes an annealing process, and transports the annealed pipe fitting to a discharging station through the roller conveying line and enters a discharging cache frame through a discharging mechanism.

The positive effects are as follows: because the red copper straight pipe annealing device mainly comprises the roller, the induction coil, the rack, the power supply, the control cabinet and the dust removal and purification device, the red copper straight pipe annealing is carried out in an induction coil metal heating mode, and the heating inductor adopts a quick replacement station to meet the requirements of pipe fitting changes of different specifications; a red copper straight pipe annealing method mainly comprises four procedures of feeding caching, roller transmission, annealing process and blanking caching, and is specifically divided into an automatic mode and a manual mode; the continuous heating mode is adopted, and the temperature control system is arranged, so that closed-loop control of the heating temperature can be realized, and the heating temperature is ensured to meet the process requirements. The device and the method are suitable for annealing the red copper straight pipe.

Drawings

FIG. 1 is a schematic structural diagram of a red copper straight tube annealing device;

FIG. 2 is a process flow diagram of a red copper straight tube annealing method.

In the figure, 1 is a roller, 2 is an induction coil and a rack, 2.1 is an induction coil, 2.2 is a position adjusting rotary wheel, 2.3 is a telescopic cylinder, 3 is a power supply and control cabinet, and 4 is a dust removal and purification device.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

According to the figure, the device for annealing the red copper straight pipe mainly comprises a roller 1, an induction coil and a rack 2, a power supply and control cabinet 3 and a dust removal and purification device 4, wherein a group of induction coils and the rack 2 and the power supply and control cabinet 3 are arranged at the side part of a roller 1 conveying line, and the dust removal and purification device 4 is arranged at one side of the induction coil and the rack 2; wherein, running roller 1 is used for the transportation of pipe fitting, and induction coil and rack 2 are the main execution device of annealing process, and power and switch board 3 are as annealing device's main control unit to for annealing process provides output power, dust removal purification device 4 is used for the purification treatment of device operation in-process smoke and dust.

In order to ensure the stability of the structure of the invention, the induction coil and the rack 2 comprise an induction coil 2.1 and a rack, the lower part of the rack is provided with a position adjusting rotary wheel 2.2 and a telescopic cylinder 2.3, and the upper part of the rack is provided with the induction coil 2.1 and a heating inductor; the heating inductor adopts a quick replacement station to meet the requirements of pipe fitting changes of different specifications, and the induction coil 2.1 adopts a prefabricated part assembly type structure to facilitate maintenance and replacement; the induction coil 2.1 is formed by integrally winding a large-section rectangular copper pipe, and cooling water is introduced into the pipe; in order to protect the insulating strength of the induction coil, the surface of the induction coil 2.1 is coated with moisture-proof insulating enamel; be equipped with position control gyro wheel 2.2 on the rack and be manual elevating gear to install scale and upper and lower spacing protection mechanism, under manual mode, adjustment induction coil 2.1 position makes and treats that heating pipe spare is in induction coil 2.1 central point and puts, simultaneously, can switch induction coil and rack 2 through telescopic cylinder 2.3 according to pipe fitting diameter parameter.

In order to further ensure the stability of the structure of the invention, the power of the induction heating power supply of the heating inductor is generally calculated according to the following formula:

wherein P represents the power (unit: kW), G represents the weight (unit: kg) of the pipe to be heated, and T represents the weight of the pipe to be heated₂The target heating temperature (unit:. degree. C.) of the pipe, T₁The pipe initial temperature (unit:. degree. C.), t, C, and C were calculated, respectively, as the heating tact (unit: sec.), the average specific heat of the metal to be heated (unit: kJ/(kg. degree. C.), and the heating efficiency η was 0.6 for red copper (0.394 kJ/(kg. degree. C.).

In order to optimize the structure of the annealing device, the annealing device for the red copper straight pipe also comprises a temperature control system, wherein the temperature control system mainly comprises an infrared thermometer, a PLC (programmable logic controller) and a digital sampling module, and is in data communication with a heating power supply to complete heating temperature closed-loop control; that is, when the actual temperature of the pipe is detected to be higher than the set value, the heating power supply will automatically reduce the output power; on the contrary, when the actual temperature of the pipe fitting is detected to be lower than the set value, the heating power supply automatically improves the output power, and the temperature of the pipe fitting to be heated is ensured to meet the process requirements through the mechanism.

In order to optimize the structure of the invention, the red copper straight pipe annealing method mainly comprises four working procedures of material loading cache, roller transmission, annealing process and material unloading cache, and the specific flow is as follows: the pipe fitting at first gets into material loading station buffer memory, gets into the running roller through feed mechanism again and transports the transport, transports the transfer chain by the running roller and transports the annealing station, carries out annealing process, and the pipe fitting after the annealing transports transfer chain by the running roller and transports unloading station department to get into unloading buffer memory frame through unloading station mechanism.

In order to optimize the structural stability of the annealing process, the annealing process of the red copper straight pipe adopts a continuous heating mode, namely, the pipe fitting is transported and heated on a roller wheel simultaneously, and a temperature control system is designed, so that the closed-loop control of the heating temperature can be realized, and the heating temperature is ensured to meet the process requirement; the pipe fitting heating temperature is adjusted by controlling the running speed of the roller and the power output power, when the pipe fitting heating interval is finished, the power output power is stopped, the normal running speed of the roller is recovered, and the heated pipe fitting is transported to the blanking station as soon as possible.

In order to further optimize the structure of the invention, the operation mode of the red copper straight pipe annealing method is divided into an automatic mode and a manual mode, and the specific flow is as follows:

in an automatic mode, the system automatically adapts annealing process parameters such as power output power and running speed of rollers according to task information such as pipe diameter, thickness, length, stress relief position and temperature requirement issued by an information system, and calls an induction coil with matched specification parameters to finish a stress relief process, and the automatic mode is mainly used for large-batch and standard operation of pipe fitting specifications and the like, so that the productivity can be remarkably improved and the working environment can be improved;

in a manual mode, according to the requirements of pipe diameters, thicknesses, temperatures and the like of pipe fittings, the output power of a power supply is manually set, an induction coil matched with specification parameters is selected, a roller is controlled to operate to transfer the pipe fittings from a loading station to a stress relieving station, an annealing process is executed, after the annealing process is finished, the roller is controlled to operate to transfer the pipe fittings to a blanking station, and the manual mode is mainly used for the conditions of small-batch and temporary tasks of pipe fittings specifications and the like, and compared with an automatic mode, the flexibility and the efficiency are higher.

Example (b):

geometric data of red copper straight tube: a. outer diameter: phi 20 mm-phi 114 mm; b. wall thickness: 2 mm-7 mm; c. length: 0.5m to 6 m; d. straightness accuracy: less than or equal to 1 mm/m.

The red copper straight pipe annealing method is adopted, the heating speed of the inductance coil can reach 0.8m/min, the heating temperature can reach 400-750 ℃, the temperature control precision is +/-15 ℃, the heating position control precision is +/-10 mm for the pipe fittings in the application range, and the pipe fittings are transported by a roller conveying line.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.