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How to place the impedance in the high frequency welded pipe equipment?
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- Release time：2022-08-23 11:30
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【概要描述】When describing the placement plan of the resistor in the high frequency welded pipe equipment, two positioning standards are used, one is based on the contour of the resistor, and the other is based on the magnetic rod contour inside the resistor.
How to place the impedance in the high frequency welded pipe equipment?
【概要描述】When describing the placement plan of the resistor in the high frequency welded pipe equipment, two positioning standards are used, one is based on the contour of the resistor, and the other is based on the magnetic rod contour inside the resistor.
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- Release time：2022-08-23 11:30
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Detail
When describing the placement plan of the resistor in the high frequency welded pipe equipment, two positioning standards are used, one is based on the contour of the resistor, and the other is based on the magnetic rod contour inside the resistor. There are certain differences between the two benchmarks.
In the induction welding process of high frequency welded pipe equipment, the induced current of the welded pipe blank is mainly distributed near the inner and outer perimeter edges of the fusion surface of the pipe blank. The current density in other areas of the billet is lower.
A large number of experiments have shown that under the precondition of placing a magnetic rod (impedance), the current density is higher in the interval from the middle line of the squeeze roller to the front end of the induction coil; in the induction coil area, the current density decreases rapidly, behind the induction coil At the end position, the current density is reduced to 3% of the highest value. After removing the magnetic rod (resistor) in the tube blank, the current density on the side of the tube blank is greatly reduced, and the average current density in front of the induction coil is reduced by about 47%.
Placing a magnetic rod in the tube blank can make the induced current in the tube blank concentrate on the fusion surface, increase the current density on the edge of the tube blank on the fusion surface, and thereby improve the induction welding efficiency and save the power of high frequency welded pipe equipment. If the magnetic bar is not used or the magnetic bar fails, higher output power of the second-hand high frequency welded pipe equipment must be consumed to maintain manufacturing.
It should be noted that if the magnet bar is packaged inside the resistor, there should be a certain distance between the front end of the resistor and the front end of the magnet bar. Some references take the front of the resistor as the placement standard, and align the front end of the resistor with the center of the squeeze roller line, so that the front of the magnet bar may be located behind the squeeze roller line, which will reduce the efficiency of welding. The magnetic rod in the impedance device is the key part that affects the distribution of induced electricity. When placing the impedance device, the contour of the magnetic rod should be the standard.
Practical experience believes that the length of the magnetic rod should be 3.5 times the width of the induction coil, but this kind of insight is less versatile. When clarifying the length of the magnet bar, it should be based on the distribution of the induced current in the radial direction of the welded pipe. In the induction welding process of high frequency welded pipe equipment, the amount of induced current is mainly distributed from the centerline of the squeeze roller to the rear end of the induction solenoid coil. Aligning the front of the magnet bar with the two ends of the axis of the extrusion forming roller, and overlapping the development of the back end of the magnet bar and the back end of the induction coil, can make most of the induced current in the tube blank be concentrated on the fusion surface of the welded pipe by the effect of the magnet bar . The minimum length of the magnet bar can be determined based on the front and rear development parts of the induction electromagnetic coil.
Specific description of the placement of impedance devices in high frequency welded pipe equipment:
When placing the impedance device, the contour of the magnetic rod inside the impedance device should be used as the placement standard. In the axial direction of the welded pipe, the front of the magnetic bar must be aligned with both ends of the center line of the squeeze roller. If the front end of the magnetic bar is located behind the center line of the squeeze roller, the high efficiency of induction welding will be reduced. The length of the magnet bar should not be less than the distance between the center line of the squeeze roller and the rear end of the induction solenoid coil.
In the vertical direction of the cross section of the welded pipe, the resistance of the resistance close to the fusion surface of the welded pipe can improve the high efficiency of induction welding. The cross-sectional area of the magnetic rod inside the impedance is more than 50% of the inner wall section of the welded pipe to meet the manufacturing regulations. Optimizing the magnetic rod group into a hollow structure has less impact on the efficiency of induction welding.
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1. Transporting Pipe Materials
The primary function of the roller conveyor motor is to drive the rollers, transporting pipe materials from one process to the next. During pipe welding production, the pipe material needs to go through multiple stages, including uncoiling, forming, welding, cooling, sizing, and cutting. The roller conveyor motor ensures smooth and continuous movement of the pipe material by controlling the rotation of the rollers, preventing jams or deviations.
2. Ensuring Production Continuity
In used pipe welding machines, the stable operation of the roller conveyor motor is key to ensuring production continuity. If the motor fails, it may cause interruptions in material transportation, affecting the efficiency of the entire production line. Therefore, the reliability and durability of the roller conveyor motor are particularly important, especially in used equipment, where regular maintenance and care are essential.
3. Controlling Pipe Material Speed
The roller conveyor motor controls the speed of the rollers through a speed regulation device, thereby adjusting the transportation speed of the pipe material. During the welding process, the transportation speed of the pipe material must match the welding speed to ensure weld quality. The precise control capability of the roller conveyor motor directly affects welding results and production efficiency.
4. Improving Processing Accuracy
The smooth operation of the roller conveyor motor helps reduce vibrations and deviations during material transportation, thereby improving processing accuracy. In used pipe welding machines, the performance of the roller conveyor motor may decline due to equipment aging, so regular inspection and maintenance are necessary to ensure its operational precision.
5. Adapting to Multiple Specifications
Roller conveyor motors are typically equipped with speed regulation functions, allowing them to adapt to the production of pipes with different specifications. For example, when producing thin-walled and thick-walled pipes, the motor needs to adjust its speed to meet different processing requirements. This flexibility enables used pipe welding machines to fulfill diverse production needs.
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Modern roller conveyor motors are often designed for high efficiency and energy savings, reducing energy consumption and improving production efficiency. In used pipe welding machines, if the motor is aging or its performance declines, energy consumption may increase. Therefore, it is recommended to upgrade or replace the motor to enhance the overall energy efficiency of the equipment.
7. Reducing Equipment Wear
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8. Automation Control
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9. Safety
The stable operation of the roller conveyor motor is also closely related to production safety. If the motor fails, it may lead to material pile-ups, equipment jams, or even injuries. Therefore, in used pipe welding machines, the safety of the roller conveyor motor cannot be overlooked.
10. Maintenance and Care
In used pipe welding machines, the maintenance of the roller conveyor motor is particularly important. Since the equipment has been used for a certain period, the motor's performance may have declined. Regularly checking the motor's insulation, lubrication, and operating temperature can extend its service life and ensure stable equipment operation.
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1. Diameter Adjustment
After the welding of steel pipes is completed, due to thermal and mechanical stresses during the welding process, the diameter of the pipes may become uneven or fail to meet standards. The expanding machine adjusts the diameter of the pipes through mechanical or hydraulic means, ensuring it meets design specifications. This process not only improves the dimensional accuracy of the pipes but also ensures their interchangeability and compatibility in use.
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During the welding process, steel pipes may develop defects such as ovality, bending, or other shape irregularities. The expanding machine corrects these defects by applying uniform pressure, making the cross-section of the pipes more circular and thereby enhancing their overall quality and appearance.
3. Improvement of Mechanical Properties
During the expanding process, the inner and outer surfaces of the pipes are subjected to uniform stress, which helps eliminate residual stresses generated during welding and improves the mechanical properties of the pipes. For example, expanding can enhance the compressive and bending strength of the pipes, making them more suitable for use in high-stress environments.
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The expanding machine can also polish the inner and outer surfaces of the pipes to some extent during the expanding process, removing burrs and oxide scales generated during welding. This improves the surface quality of the pipes, which is particularly important for applications requiring high surface quality, such as fluid or gas transportation.
5. Increased Production Efficiency
In the production line of used welded pipe machines, the use of an expanding machine can significantly improve production efficiency. Through automated or semi-automated expanding operations, manual intervention is reduced, production cycles are shortened, and production costs are lowered. Additionally, the high-precision operation of the expanding machine reduces the scrap rate, enhancing the overall efficiency of the production line.
6. Adaptability to Multiple Specifications
Expanding machines typically feature adjustable expanding ranges and pressure settings, allowing them to accommodate the production of pipes with different diameters and wall thicknesses. This flexibility enables used welded pipe machines to produce pipes of various specifications, meeting the diverse needs of customers.
7. Extended Equipment Lifespan
In used welded pipe machines, the use of an expanding machine can also extend the lifespan of other equipment. By correcting the shape and dimensions of the pipes, wear and damage to subsequent processing equipment are reduced, thereby prolonging the lifespan of the entire production line.
8. Environmental Protection and Energy Efficiency
Modern expanding machines often incorporate energy-saving designs and eco-friendly materials, reducing energy consumption and environmental pollution. In the production process of used welded pipe machines, the use of high-efficiency expanding machines not only lowers production costs but also aligns with the environmental requirements of modern industry.
Conclusion
The role of the expanding machine in used welded pipe machines cannot be overlooked. It not only improves the dimensional accuracy and shape quality of steel pipes but also enhances their mechanical properties, improves surface quality, boosts production efficiency, adapts to multiple specifications, extends equipment lifespan, and meets environmental and energy-saving requirements. Therefore, the expanding machine is an indispensable key piece of equipment in the production process of used welded pipe machines.
From the above analysis, it is clear that the expanding machine plays multiple roles and holds significant importance in used welded pipe machines. Whether from the perspective of product quality, production efficiency, or economic benefits, the expanding machine is a critical component.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier：www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier（Please click the link→) :second-hand pipe mill
1. Diameter Adjustment
After the welding of steel pipes is completed, due to thermal and mechanical stresses during the welding process, the diameter of the pipes may become uneven or fail to meet standards. The expanding machine adjusts the diameter of the pipes through mechanical or hydraulic means, ensuring it meets design specifications. This process not only improves the dimensional accuracy of the pipes but also ensures their interchangeability and compatibility in use.
2. Shape Correction
During the welding process, steel pipes may develop defects such as ovality, bending, or other shape irregularities. The expanding machine corrects these defects by applying uniform pressure, making the cross-section of the pipes more circular and thereby enhancing their overall quality and appearance.
3. Improvement of Mechanical Properties
During the expanding process, the inner and outer surfaces of the pipes are subjected to uniform stress, which helps eliminate residual stresses generated during welding and improves the mechanical properties of the pipes. For example, expanding can enhance the compressive and bending strength of the pipes, making them more suitable for use in high-stress environments.
4. Surface Quality Enhancement
The expanding machine can also polish the inner and outer surfaces of the pipes to some extent during the expanding process, removing burrs and oxide scales generated during welding. This improves the surface quality of the pipes, which is particularly important for applications requiring high surface quality, such as fluid or gas transportation.
5. Increased Production Efficiency
In the production line of used welded pipe machines, the use of an expanding machine can significantly improve production efficiency. Through automated or semi-automated expanding operations, manual intervention is reduced, production cycles are shortened, and production costs are lowered. Additionally, the high-precision operation of the expanding machine reduces the scrap rate, enhancing the overall efficiency of the production line.
6. Adaptability to Multiple Specifications
Expanding machines typically feature adjustable expanding ranges and pressure settings, allowing them to accommodate the production of pipes with different diameters and wall thicknesses. This flexibility enables used welded pipe machines to produce pipes of various specifications, meeting the diverse needs of customers.
7. Extended Equipment Lifespan
In used welded pipe machines, the use of an expanding machine can also extend the lifespan of other equipment. By correcting the shape and dimensions of the pipes, wear and damage to subsequent processing equipment are reduced, thereby prolonging the lifespan of the entire production line.
8. Environmental Protection and Energy Efficiency
Modern expanding machines often incorporate energy-saving designs and eco-friendly materials, reducing energy consumption and environmental pollution. In the production process of used welded pipe machines, the use of high-efficiency expanding machines not only lowers production costs but also aligns with the environmental requirements of modern industry.
Conclusion
The role of the expanding machine in used welded pipe machines cannot be overlooked. It not only improves the dimensional accuracy and shape quality of steel pipes but also enhances their mechanical properties, improves surface quality, boosts production efficiency, adapts to multiple specifications, extends equipment lifespan, and meets environmental and energy-saving requirements. Therefore, the expanding machine is an indispensable key piece of equipment in the production process of used welded pipe machines.
From the above analysis, it is clear that the expanding machine plays multiple roles and holds significant importance in used welded pipe machines. Whether from the perspective of product quality, production efficiency, or economic benefits, the expanding machine is a critical component.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier：www.usedpipemill.com
JinYuJie-Used Pipe Mills Supplier（Please click the link→) :second-hand pipe mill
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Wechat: 13392281699
Email: zty@usedpipemill.com
Company address:No. A99, East Lecong Avenue, Lecong Town, Foshan City, Guangdong Province
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