Wire drawing experiment device and method

Abstract

The invention provides a wiredrawing experiment device and method. The wiredrawing experiment device comprises a heating device, a wiredrawing die base, a tension adjusting device and a wire guide wheel which are sequentially arranged between an original wire roller and a take-up device. The heating device is provided with a heating device for heating the metal wire, and a temperature sensor is further arranged near the metal wire; the temperature sensor adopts a thermocouple, a platinum resistance thermometer and an infrared temperature sensor. The heating device comprises a heat preservation shell, and a resistance heating device or an inductance coil heating device or a laser heating device is arranged in the shell in the moving direction of the metal wire. By means of the device and method, the optimal machining parameters of the metal wires of different materials and different machining diameters can be obtained, and the optimal machining parameters comprise the heating temperature, the temperature distribution field, the wire drawing speed and other optimized technological parameters. And the influence of other disturbance factors on the experiment result can be reduced as much as possible, so that the correlation between the experiment result and main input parameters is higher.

Description

Technical Field

[0001] The present invention relates to the field of wire drawing process experiments of special metal wires, and in particular to a wire drawing experimental device and method. Background Art

[0002] In the prior art, there is a method of drawing after heating to draw difficult-to-process metal wires, such as the drawing of tungsten wires. For example, the patent document CN118417348A records a refractory metal wire hot drawing device and its process. The inventor found that the heating method is not only effective for refractory metal wires, but also for other metal wires. The heating wire drawing method can effectively improve production efficiency and reduce wire drawing defects. With the improvement of production efficiency, the production cost of metal wires can be effectively reduced, or by optimizing the wire drawing process parameters, metal wires with special quality requirements can be produced to improve economic benefits, such as wires for high-end audio or headphones, wires for robots, and wires for chips. These application scenarios put forward higher requirements for metal wires. However, how to obtain better wire drawing parameters currently depends mainly on the experience of workers, which makes the production process fail to achieve optimization. Experimental devices and methods are needed to obtain the optimal wire drawing process parameters. At present, there is no suitable experimental device and method to guide how to obtain the optimal wire drawing process parameters. The content of the background technology is used to help technicians understand the present invention, and it is not an admission of the prior art. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a wire drawing experimental device and method, which can help technicians obtain optimized wire drawing process parameters and guide production personnel to improve production efficiency in the best way while ensuring quality requirements.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a wire drawing experimental device, comprising a heating device, a wire drawing die seat, a tensioning adjustment device and a wire guide wheel which are sequentially arranged between an original wire roller and a wire taking-up device; The temperature raising device is provided with a heating device for heating the metal wire, and a temperature sensor is also provided near the metal wire; The temperature sensor adopts a thermocouple, a platinum resistance thermometer and an infrared temperature sensor.

[0005] In a preferred solution, the heating device comprises a heat-insulating shell, in which a resistance heating device, an induction coil heating device or a laser heating device is arranged along the moving direction of the metal wire.

[0006] In a preferred solution, the resistance heating device or the induction coil heating device is divided into multiple groups, each group of resistance heating devices or the induction coil heating devices is arranged along the moving direction of the metal wire, and each group of resistance heating devices or the induction coil heating devices is connected to an independent control system so that there are different temperature zones in the shell; In a preferred solution, the temperature gradually increases from upstream to downstream, the temperature in the middle is the preset heating temperature, and the temperatures of the upstream and downstream are adjusted to increase or decrease according to the temperature in the middle.

[0007] In a preferred embodiment, the laser heating device includes a plurality of laser heating heads arranged along the moving direction of the metal wire, and also includes a curved reflector plate surrounding the metal wire, wherein the curved reflector plate is arranged to reflect light toward the metal wire; In a preferred solution, the temperature gradually increases from upstream to downstream, the temperature in the middle is the preset heating temperature, and the temperatures of the upstream and downstream are adjusted to increase or decrease according to the temperature in the middle.

[0008] In a preferred solution, an adjustable guide wheel is provided between the heating device and the wire drawing die seat, for adjusting the position of the metal wire to align with the hole of the wire drawing die; In the preferred solution, the structure of the adjustable guide wheel is that the support shaft is supported on the bearing seat, and a fixing rod is provided at the lower part of the bearing seat, and the fixing rod is fixedly connected to the frame in an adjustable manner through the guide wheel fixing nut to adjust the height position of the metal wire; Two opposite adjustable radiating wheels are sleeved on the supporting shaft, and a plurality of trapezoidal radiating wings are radially arranged on the adjustable radiating wheels along the circumference, one end connected to the adjustable radiating wheel is longer in length, and the other end is shorter in length, the two adjustable radiating wheels are slidably sleeved on the supporting shaft, and the radiating wings of the two adjustable radiating wheels are relatively staggered and inserted, and the projection of the overall structure on the vertical plane is in an "x" shape; A guide wheel boss is provided at the end of the adjustable radial wheel away from the radial wing, and a guide groove is provided on the outer wall of the guide wheel boss. The adjustable nut sleeve is slidably sleeved on the guide wheel boss, and a limited sliding structure is formed by radially arranged sliding pins and guide grooves to limit the axial position between the adjustable nut sleeve and the guide wheel boss. A thread is provided on the outer wall of the supporting shaft, and the adjustable nut sleeve is threadedly connected to the supporting shaft. The adjustable nut sleeve is rotated to fine-tune the horizontal and vertical positions of the metal wire.

[0009] In a preferred solution, the structure of the wire drawing die seat is that a wire drawing die is arranged in a "U"-shaped die seat body, and a heating device is arranged in the die seat body, and the heating device is used to heat the wire drawing die to a working temperature; In the preferred solution, a temperature sensor is also provided on the mold base; In a preferred solution, a vibration sensor is also provided on the die base body for evaluating the wire drawing quality; In a preferred embodiment, a spray hole is also provided on the mold base body for spraying out the coolant, or spraying out the coolant and the protective gas at the same time; In a preferred solution, the structure of the tensioning adjustment device is that a tensioning adjustment wheel is provided below between the first limiting wheel and the second limiting wheel, and the metal wire is used to pass below the first limiting wheel and the second limiting wheel and above the tensioning adjustment wheel; The tensioning adjustment wheel is connected to the adjustment rod located below. A permanent magnet is arranged on the adjustment rod. Multiple groups of electromagnetic coils are arranged around the adjustment rod. The tensioning force on the metal wire can be adjusted by adjusting the input power of the electromagnetic coil without being affected by gravity and inertia.

[0010] In a preferred solution, the structure of the wire-taking device is as follows: the wire-taking wheel is connected to a plurality of driving mechanisms through a transmission mechanism, and the driving mechanism includes a plurality of speed reducers with different transmission ratios or wire-taking motors with different powers, so as to achieve a larger adjustable range of speed and torque; The diameter of the conductor reel and take-up reel is about 10cm; The guide wheel and take-up wheel are positioned so that the wire undergoes a bend in opposite directions.

[0011] An experimental method using the above-mentioned wire drawing experimental device comprises the following steps: S1. Heat the wire drawing die seat to the wire drawing working temperature so that the wire drawing die is in the working position after being deformed by heat; S2, heating the heating device to a temperature below the recrystallization temperature, complete annealing temperature, homogenization annealing temperature or subcritical annealing temperature of the metal wire; S3, adjusting the working position of the adjustable guide wheel to align with the hole of the wire drawing die; S4. Adjust the tension of the tension adjusting wheel according to the material and diameter of the metal wire; S5. Setting different temperatures of the heating device and speeds of the take-up wheel to conduct experiments; S6. Collecting quality data of the metal wire after drawing; S7, establishing a relationship between the quality data of the metal wire and the material of the metal wire, the diameter before drawing, the diameter after drawing, the diameter difference, the heating temperature and the drawing speed; The optimal wire drawing control parameters are obtained through the above steps.

[0012] The preferred solution also includes the following steps: S01, collecting vibration parameters of the wire drawing die seat; S02, establishing a relationship between the vibration parameter and the quality data and wire drawing parameters of the metal wire; Through the above steps, the quality of the metal wire can be quickly evaluated by the vibration parameters under different wire drawing parameters.

[0013] The wire drawing experimental device and method provided by the present invention, by adopting the above scheme, have the following beneficial effects: 1. The device and method of the present invention can obtain the optimal processing parameters of metal wires of different materials and different processing diameters, including optimized process parameters such as heating temperature, temperature field distribution, and wire drawing speed. By obtaining these parameters, the production quality and production efficiency of metal wire drawing can be improved, especially the balance between production quality and production efficiency can be achieved.

[0014] 2. The device of the present invention can minimize the influence of other disturbance factors on the experimental results, thereby making the experimental results more correlated with the main input parameters.

[0015] 3. The method of the present invention associates the vibration parameters with the quality data of the metal wire, which can improve the efficiency of the experiment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described below in conjunction with the accompanying drawings and embodiments: Figure 1 It is a schematic diagram of the overall structure of the wire drawing experimental device of the present invention.

[0017] Figure 2 It is a structural schematic diagram of the wire drawing die seat of the present invention.

[0018] Figure 3 It is a schematic structural diagram of the temperature increasing device of the present invention.

[0019] Figure 4 This is another preferred structural schematic diagram of the temperature increasing device of the present invention.

[0020] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure.

[0021] Figure 6 It is a structural schematic diagram of the tension adjustment device of the present invention.

[0022] Figure 7 It is a structural schematic diagram of the wire take-up device of the present invention.

[0023] Figure 8 It is a schematic diagram of the side structure of the adjustable guide wheel of the present invention.

[0024] Fig. 9 It is a schematic diagram of the main structure of the adjustable guide wheel of the present invention.

[0025] In the figure: original wire roller 1, heating device 2, shell 21, induction coil 22, temperature sensor 23, laser heating head 24, curved reflector 25, adjustable guide wheel 3, fixing rod 31, guide wheel fixing nut 32, adjustable radial wheel 33, radial wing 34, sliding pin 35, guide wheel boss 36, adjustable nut sleeve 37, supporting shaft 38, bearing seat 39, wire drawing die seat 4, wire drawing die 41, spray hole 42, die seat body 43, temperature sensor 44, heating device 45, vibration sensor 46, tensioning adjustment device 5, first limiting wheel 51, second limiting wheel 52, tensioning adjustment wheel 53, adjusting rod 54, electromagnetic coil 55, permanent magnet 56, wire wheel 6, wire taking-up device 7, driven wheel 71, driving wheel 72, first reducer 73, first wire taking-up motor 74, transmission rod 75, wire taking-up wheel 76, second reducer 77, second wire taking-up motor 78, metal wire 8, frame 9. DETAILED DESCRIPTION

[0026] Embodiment 1: like Figures 1 to 9 A wire drawing experimental device includes a heating device 2, a wire drawing die seat 4, a tensioning adjustment device 5 and a wire guide wheel 6, which are sequentially arranged between an original wire roller 1 and a wire taking-up device 7; The temperature increasing device 2 is provided with a heating device for heating the metal wire 8, and a temperature sensor 44 is also provided near the metal wire 8; The temperature sensor is a thermocouple, a platinum resistance thermometer and an infrared temperature sensor. With this structure, the temperature rise of the metal wire 8 can be accurately controlled, including accurately controlling the temperature rise rate and reducing temperature fluctuations to obtain accurate experimental data.

[0027] The preferred solution is Figure 3 , 4 In the embodiment, the heating device comprises a heat-insulating housing 21, and a resistance heating device, an induction coil heating device or a laser heating device is arranged inside the housing 21 along the moving direction of the metal wire 8. Preferably, the heating device is as close to the metal wire 8 as possible without affecting the threading and processing of the metal wire 8.

[0028] For alternative solutions, see Figure 3In the embodiment, the resistance heating device or the induction coil heating device is divided into multiple groups, each group of resistance heating devices or induction coil heating devices is arranged along the moving direction of the metal wire 8, and each group of resistance heating devices or induction coil heating devices is connected to an independent control system so that there are different temperature zones in the shell; the control system refers to a system that provides energy for the resistance heating device or the induction coil heating device and adjusts the input power, including a control system that adjusts the input voltage and / or current, and the control system itself belongs to the prior art. Optionally, PID (Proportional-Integral-Derivative Control) is used for precise temperature control. In the preferred embodiment, the temperature gradually increases from upstream to downstream, the temperature in the middle is the preset heating temperature, and the temperature of the upstream and downstream is adjusted according to the temperature in the middle.

[0029] Another option is Figure 4 , 5 In the embodiment, the laser heating device includes a plurality of laser heating heads 24 arranged along the moving direction of the metal wire 8, and also includes a curved reflector 25 surrounding the metal wire 8, and the curved reflector 25 is arranged to reflect light to the metal wire 8; the laser heating head 24 preferably adopts a laser heating head for metal rust removal, and the heating temperature of the laser heating head 24 is controlled by controlling the output power. Preferably, the heating temperature is precisely controlled by outputting the square wave pulse width, that is, by controlling the on-off gap. The curved reflector 25 is a metal sleeve with a curved cross section and extending along the axis of the metal wire 8. The shape of the curved surface is designed to use the position of the laser heating head 24 as the light source, and set the reflected light path to the position of the metal wire 8.

[0030] In a preferred solution, the temperature gradually increases from upstream to downstream, the temperature in the middle is the preset heating temperature, and the temperatures of the upstream and downstream are adjusted according to the temperature in the middle. The specific temperature is set according to the material of the metal wire.

[0031] The preferred solution is Figure 8 , 9 In the figure, an adjustable guide wheel 3 is provided between the heating device 2 and the drawing die seat 4, which is used to adjust the position of the metal wire 8 to align it with the hole of the drawing die 41; this structure can avoid uneven force on the metal wire 8 due to carelessness in the path of the metal wire 8 and the hole of the drawing die 41, thereby avoiding inconsistent deformation of the metal wire 8 and causing the finished metal wire to curl.

[0032] The preferred solution is Fig. 9 In the structure of the adjustable guide wheel 3, a support shaft 38 is supported on a bearing seat 39, a fixing rod 31 is provided at the lower part of the bearing seat 39, and the fixing rod 31 is fixedly connected to the frame 9 in an adjustable manner through a guide wheel fixing nut 32 to adjust the height position of the metal wire 8; Two relatively adjustable radial wheels 33 are sleeved on the supporting shaft 38, and a plurality of trapezoidal radial wing pieces 34 are radially arranged along the circumference of the adjustable radial wheels 33. One end connected to the adjustable radial wheel 33 is longer, and the other end is shorter. The two adjustable radial wheels 33 are slidably sleeved on the supporting shaft 38, and the radial wing pieces 34 of the two adjustable radial wheels 33 are relatively staggered and plugged in, and the projection of the overall structure on the vertical plane is "x"-shaped; it is difficult to accurately process the "V"-shaped bottom structure of the "x"-shaped wheel in the prior art, but the structure of the present invention can accurately carry ultrafine metal wires, such as metal wires of 33 microns to 100 microns.

[0033] A guide wheel boss 36 is provided at one end of the adjustable radial wheel 33 away from the radial wing 34, and a guide groove is provided on the outer wall of the guide wheel boss 36. The adjustable nut sleeve 37 is slidably sleeved with the guide wheel boss 36, and a radially arranged sliding pin 35 and the guide groove constitute a limited sliding structure to limit the axial position between the adjustable nut sleeve 37 and the guide wheel boss 36. A thread is provided on the outer wall of the supporting shaft 38, and the adjustable nut sleeve 37 is threadedly connected to the supporting shaft 38. The adjustable nut sleeve 37 is rotated to fine-tune the horizontal and vertical positions of the metal wire 8. With this structure, the position of the metal wire 8 can be accurately adjusted to align with the hole of the wire drawing die 41. It is particularly suitable for drawing ultra-fine wires, such as wires with a diameter of less than 0.1 mm. The adjustable radial wheel 33 is an important component of the test device for controlling the wire drawing accuracy.

[0034] The preferred solution is Figure 2 In the invention, the structure of the wire drawing die seat 4 is that a wire drawing die 41 is arranged in a die seat body 43 of a "U"-shaped structure, and a heating device 45 is arranged in the die seat body 43, and the heating device 45 is used to heat the wire drawing die 41 to the working temperature; the inventor found that during the working process of the wire drawing die 41 in the prior art, the hole of the wire drawing die 41 is affected by thermal expansion and contraction, and the position will change. This change causes the metal wire 8 to be non-concentric with the metal wire guided by the guide wheel during the wire drawing process, so that the metal wire is bent and deformed during the wire drawing process, affecting the quality of the finished metal wire 8, that is, when not under stress, the finished metal wire naturally becomes a curled state. In this example, the wire drawing die 41 is heated to the working temperature by preheating, so that the wire drawing die 41 is pre-deformed in advance, so that the hole of the wire drawing die 41 is kept flush with the bearing position of the guide wheel during the processing, and the influence of thermal expansion and contraction of the wire drawing die 41 on the experimental data is reduced. Since the wire drawing process usually does not involve a particularly long length, and the wire drawing die 41 is usually in a process of rapid temperature increase, the above-mentioned solution can effectively improve the accuracy of the experimental results.

[0035] The preferred solution is Figure 2 In the embodiment, a temperature sensor 44 is also provided on the die base body 43; it is used to feedback the temperature of the wire drawing die base 4 for automatic control.

[0036] The preferred solution is Figure 2 In the embodiment, a vibration sensor 46 is also provided on the die base 43 to evaluate the wire drawing quality; the vibration sensor 46 preferably adopts a triaxial or biaxial acceleration sensor, and through the collected vibration frequency and amplitude data, the vibration parameters can be associated with the quality data of the metal wire 8, especially the quality defect data, that is, by detecting the vibration parameters, it can be determined whether the metal wire 8 has quality defects and what kind of quality defects have occurred. The efficiency of the experiment can be improved. The quality defects of the metal wire 8 include surface scratches, dimensional deviations, bends or twists, cracks, local hardening, etc.

[0037] The preferred solution is Figure 2 In the drawing die, a spray hole 42 is provided on the die base 43 for spraying coolant, or spraying coolant and protective gas at the same time; the spray hole 42 faces the inlet position of the hole of the wire drawing die 41.

[0038] The preferred solution is Figure 6 In the structure of the tensioning adjustment device 5, a tensioning adjustment wheel 53 is provided below between the first limiting wheel 51 and the second limiting wheel 52, and the metal wire 8 is used to pass below the first limiting wheel 51 and the second limiting wheel 52 and above the tensioning adjustment wheel 53; The tensioning adjustment wheel 53 is connected to the adjustment rod 54 located below. The adjustment rod 54 is provided with a permanent magnet 56. A plurality of groups of electromagnetic coils 55 are provided around the adjustment rod 54. The input power of the electromagnetic coils 55 is adjusted to adjust the tension on the metal wire 8 without being affected by gravity and inertia. The tension adjustment in the prior art usually uses counterweight gravity or magnetic force to adjust the tension. However, for ultra-fine wires, this method has low control accuracy and is difficult to overcome the influence of the deadweight and inertia of the structure. In this example, the scheme of controlling the tension from below with electromagnetic force is adopted, which can accurately adjust the tension, especially can output a small tension, so as to be suitable for experiments with metal wires as thin as 33 microns in diameter, and can avoid being affected by the deadweight and inertia of the structural parts, greatly reducing the interference with the experimental data.

[0039] The preferred solution is Figure 7 In the embodiment, the structure of the wire-taking device 7 is as follows: the wire-taking wheel 76 is connected to a plurality of driving mechanisms through a transmission mechanism, and the driving mechanism includes a plurality of reducers with different transmission ratios or wire-taking motors with different powers to achieve a larger adjustable range of speed and torque; with this structure, a combination of different rotation speeds and different torques can be output, and it can adapt to different processing diameters of the metal wire 8 and the difference in diameter before and after processing, thereby greatly improving the applicability of the experimental device.

[0040] The diameters of the wire wheel 6 and the take-up wheel 76 are about 10 cm. With this structure, the influence of the bending required in the processing technology on the experimental data is reduced.

[0041] The positions of the wire wheel 6 and the take-up wheel 76 allow the wire 8 to be bent once in the opposite direction. This structure reduces the influence of the bending direction required in the processing technology on the experimental data, and compensates for the previous bending by bending twice in the opposite direction.

[0042] Embodiment 2: An experimental method using the above-mentioned wire drawing experimental device comprises the following steps: S1, heating the wire drawing die holder 4 to the wire drawing working temperature so that the wire drawing die 41 is in the working position after being deformed by heat; S2, heating the temperature increasing device 2 to a temperature below the recrystallization temperature, complete annealing temperature, homogenization annealing temperature or subcritical annealing temperature of the metal wire 8; S3, adjusting the working position of the adjustable guide wheel 3 to align with the hole of the wire drawing die 41; S4, adjusting the tension of the tension adjustment wheel 53 according to the material and diameter of the metal wire 8; S5, setting different temperatures of the heating device 2 and the rotation speed of the take-up wheel 76 to conduct experiments; S6, collecting quality data of the metal wire 8 after drawing; S7, establishing a relationship between the quality data of the metal wire 8 and the material of the metal wire, the diameter before drawing, the diameter after drawing, the diameter difference, the heating temperature and the drawing speed; The optimal wire drawing control parameters are obtained through the above steps.

[0043] The preferred solution also includes the following steps: S01, collecting vibration parameters of the wire drawing die seat 4; S02, establishing a relationship between the vibration parameter and the mass data and wire drawing parameters of the metal wire 8; Through the above steps, the quality of the metal wire 8 is quickly evaluated by using the vibration parameters under different wire drawing parameter conditions.

[0044] The above-mentioned embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The embodiments and features in the embodiments of the present application can be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A wire drawing experimental device, characterized in that: It comprises a heating device (2), a wire drawing die seat (4), a tensioning adjustment device (5) and a wire guide wheel (6) which are sequentially arranged between an original wire roller (1) and a wire take-up device (7); The temperature increasing device (2) is provided with a heating device for heating the metal wire (8), and a temperature sensor (44) is also provided near the metal wire (8); The temperature sensor adopts a thermocouple, a platinum resistance thermometer and an infrared temperature sensor.

2. A wire drawing experimental device according to claim 1, characterized in that: The heating device comprises a heat-insulating shell (21), wherein a resistance heating device, an induction coil heating device or a laser heating device is arranged inside the shell (21) along the moving direction of the metal wire (8).

3. A wire drawing experimental device according to claim 2, characterized in that: The resistance heating device or the induction coil heating device is divided into a plurality of groups, each group of the resistance heating device or the induction coil heating device is arranged along the moving direction of the metal wire (8), and each group of the resistance heating device or the induction coil heating device is connected to an independent control system so that there are different temperature zones in the shell; The temperature gradually increases from upstream to downstream. The temperature in the middle is the preset heating temperature. The temperatures of the upstream and downstream are adjusted according to the temperature in the middle.

4. A wire drawing experimental device according to claim 2, characterized in that: The laser heating device comprises a plurality of laser heating heads (24) arranged along the moving direction of the metal wire (8), and also comprises a curved reflector (25) surrounding the metal wire (8), wherein the curved reflector (25) is arranged to reflect light towards the metal wire (8); The temperature gradually increases from upstream to downstream. The temperature in the middle is the preset heating temperature. The temperatures of the upstream and downstream are adjusted according to the temperature in the middle.

5. The wire drawing experimental device according to claim 1, characterized in that: An adjustable guide wheel (3) is provided between the heating device (2) and the wire drawing die seat (4) for adjusting the position of the metal wire (8) so as to align it with the hole of the wire drawing die (41); The structure of the adjustable guide wheel (3) is as follows: a support shaft (38) is supported on a bearing seat (39); a fixing rod (31) is provided at the lower part of the bearing seat (39); the fixing rod (31) is fixedly connected to the frame (9) in an adjustable manner through a guide wheel fixing nut (32) to adjust the height position of the metal wire (8); Two opposite adjustable radiating wheels (33) are sleeved on the support shaft (38), and a plurality of trapezoidal radiating wings (34) are radially provided on the adjustable radiating wheel (33) along the circumference, one end connected to the adjustable radiating wheel (33) is longer in length, and the other end is shorter in length, the two adjustable radiating wheels (33) are slidably sleeved on the support shaft (38), and the radiating wings (34) of the two adjustable radiating wheels (33) are relatively staggered and plugged, and the projection of the overall structure on the vertical plane forms an "x" shape; A guide wheel boss (36) is provided at one end of the adjustable radial wheel (33) away from the radial wing (34), and a guide groove is provided on the outer wall of the guide wheel boss (36). The adjustable nut sleeve (37) is slidably sleeved with the guide wheel boss (36), and a radially arranged sliding pin (35) and the guide groove form a limited sliding structure to limit the axial position between the adjustable nut sleeve (37) and the guide wheel boss (36). A thread is provided on the outer wall of the support shaft (38), and the adjustable nut sleeve (37) is threadedly connected to the support shaft (38). The adjustable nut sleeve (37) is rotated to finely adjust the horizontal and vertical positions of the metal wire (8).

6. A wire drawing experimental device according to claim 1, characterized in that: The structure of the wire drawing die seat (4) is as follows: a wire drawing die (41) is arranged in a die seat body (43) of a "U"-shaped structure, and a heating device (45) is arranged in the die seat body (43), and the heating device (45) is used to heat the wire drawing die (41) to a working temperature; A temperature sensor (44) is also provided on the mold base (43); A vibration sensor (46) is also provided on the die base (43) for evaluating the wire drawing quality; The mold base (43) is also provided with a spray hole (42) for spraying out cooling liquid, or spraying out cooling liquid and protective gas simultaneously.

7. The wire drawing experimental device according to claim 1, characterized in that: The structure of the tension adjustment device (5) is as follows: a tension adjustment wheel (53) is provided below the first limiting wheel (51) and the second limiting wheel (52); the metal wire (8) is used to pass below the first limiting wheel (51) and the second limiting wheel (52) and above the tension adjustment wheel (53); The tensioning adjustment wheel (53) is connected to an adjustment rod (54) located below. A permanent magnet (56) is provided on the adjustment rod (54). A plurality of groups of electromagnetic coils (55) are provided around the adjustment rod (54). The tensioning force on the metal wire (8) is adjusted by adjusting the input power of the electromagnetic coils (55) without being affected by gravity and inertia.

8. The wire drawing experimental device according to claim 1, characterized in that: The structure of the wire-taking device (7) is as follows: the wire-taking wheel (76) is connected to a plurality of drive mechanisms via a transmission mechanism, and the drive mechanisms include a plurality of speed reducers with different transmission ratios or wire-taking motors with different powers, so as to achieve a larger adjustable range of speed and torque; The diameter of the guide wheel (6) and the take-up wheel (76) is about 10 cm; The guide wheel (6) and the take-up wheel (76) are positioned so that the metal wire (8) undergoes a bend in the opposite direction.

9. An experimental method using the wire drawing experimental device according to any one of claims 1 to 8, characterized in that The following steps are involved: S1, heating the wire drawing die seat (4) to a wire drawing working temperature so that the wire drawing die (41) is in a working position after being deformed by heat; S2, heating the heating device (2) to a temperature below the recrystallization temperature, complete annealing temperature, homogenization annealing temperature or subcritical annealing temperature of the metal wire (8); S3, adjusting the working position of the adjustable guide wheel (3) to be aligned with the hole of the wire drawing die (41); S4, adjusting the tension of the tension adjustment wheel (53) according to the material and diameter of the metal wire (8); S5, setting different temperatures of the heating device (2) and rotation speeds of the take-up wheel (76) to conduct experiments; S6, collecting quality data of the metal wire (8) after drawing; S7, establishing a relationship between the quality data of the metal wire (8) and the material of the metal wire, the diameter before drawing, the diameter after drawing, the diameter difference, the heating temperature and the drawing speed; The optimal wire drawing control parameters are obtained through the above steps.

10. The experimental method of a wire drawing experimental device according to claim 9, characterized in that The following steps are involved: S01, collecting vibration parameters of the wire drawing die seat (4); S02, establishing a relationship between the vibration parameter and the mass data and wire drawing parameters of the metal wire (8); Through the above steps, the quality of the metal wire (8) is quickly evaluated by using the vibration parameters under different wire drawing parameter conditions.

Images