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Used welded pipe mills production line, the formation mechanism of thin-walled pipe forming bulge

Used welded pipe mills production line, the formation mechanism of thin-walled pipe forming bulge

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  • Release time:2021-11-15 11:30
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【概要描述】The used welded pipe mills production line is the manifestation of forming instability of thin-walled pipes, one of which is the bulge, and the bulge formation mechanism is like this.

Used welded pipe mills production line, the formation mechanism of thin-walled pipe forming bulge

【概要描述】The used welded pipe mills production line is the manifestation of forming instability of thin-walled pipes, one of which is the bulge, and the bulge formation mechanism is like this.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2021-11-15 11:30
  • Pvs:
Detail

The used welded pipe mills production line is the manifestation of forming instability of thin-walled pipes, one of which is the bulge, and the bulge formation mechanism is like this.

 

(1) Excessive plastic extension of the edge. According to the welding pipe forming theory of used welded pipe mills production line, in the process of forming a flat tube into an open tube to be welded, a point on the edge gradually rises as the tube advances, and at the same time it moves closer to the rolling center surface. The trajectory of this point theoretically has a minimum value Lmin. Lmin can only be temporarily longer than the bottom of the tube blank in a certain area of forming by △L, and △L will return to match the bottom of the tube blank with the end of forming. Length (traditionally speaking is zero). However, the forming bottom line and the rolling center line formed by the roll pass can not be an absolute straight line in fact, and the influence of factors such as tube springback, roll pass, operation adjustment and so on. In fact, the plastic extension of the edge of the tube blank in the forming process of the welded pipe is inevitable, and it is an objective existence, which can be fully proved from the deformation of the first pass and its edge elongation.

 

Used welded pipe mills production line

 

(2) The tension on the edge of the tube blank decreases sharply in the later stage of forming. The state of the longitudinal edge of the tube blank is determined by the properties of the pulling force and the restoring force: when the previous pulling force is within the elastic limit, the restoring force is the forwarding form of the previous pulling force, and forms a pair of balance forces necessary for forming with the pulling force. The edge is acted on by this pair of balancing forces, so that the edge will not easily shake and jump, that is, there will be no waves or bulges; when the previous pulling force exceeds the pulling force required for the longitudinal extension of the tube blank or due to other process reasons, operation reasons, and raw material reasons When the tensile force exceeds the elastic limit, plastic deformation of the edge will occur. Moreover, if there is no new longitudinal tensile force added, the nature of the restoring force has essentially been transformed into longitudinal compressive stress, and the edge of the tube blank will be unstable under the action of longitudinal compressive stress, and the edge will wave or even form a bulge.

 

Used welded pipe mills production line

 

It can be seen that the forming mechanism of the thin-walled tube forming bulge of the used welded pipe mill production line is: during the forming process of the tube blank, the edge is affected by various factors and undergoes elastoplastic extension, and the edge will produce bulge when there is not enough longitudinal tension; Plastic extension and loss of longitudinal tensile stress are internal and external causes of bulging, and both are indispensable. If plastic extension occurs, but there is a large enough longitudinal tensile stress on the edge, it will not produce bulge. Similarly, if the edge does not produce longitudinal plastic extension, even if there is not enough tensile stress, it will not form a bulge. This understanding is an important result of the development of welded pipe forming theory, and it is also the theoretical basis for various advanced forming equipment, advanced forming processes and advanced forming adjustment methods.

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Advantages of Stainless Steel Electrolytic Tubes:
1. Corrosion Resistance: Stainless steel electrolytic tubes have excellent resistance to corrosion, which makes them ideal for use in harsh environments, including acid and alkaline conditions.
2. Durability: They are highly durable and can withstand high temperatures and pressures, making them long-lasting and reliable.
3. Hygienic Properties: Stainless steel is easy to clean and maintain, making it suitable for applications that require strict hygiene standards, such as in the food and pharmaceutical industries.
4. Strength: These tubes have high mechanical strength and can endure significant amounts of stress without deforming.
5. Recyclability: Stainless steel is recyclable, which makes these tubes environmentally friendly.
6. Aesthetic Appeal: They have a shiny and attractive appearance, which is beneficial for applications where aesthetics are important.

Disadvantages of Stainless Steel Electrolytic Tubes:
1. Cost: Stainless steel electrolytic tubes are generally more expensive than tubes made from other materials.
2. Weight: They can be heavier compared to alternative materials like aluminum or plastic, which may be a disadvantage in some applications.
3. Work Hardening: Stainless steel has a tendency to work harden, which can make machining and forming operations more difficult.
4. Thermal Conductivity: Stainless steel has relatively low thermal conductivity compared to other metals like copper, which can be a limitation in certain applications requiring efficient heat transfer.

Overall, the selection of stainless steel electrolytic tubes depends on the specific requirements of the application, balancing their benefits with their drawbacks.
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
Detail
Analyzing  advantages and disadvantages of stainless steel electrolytic tube

Advantages of Stainless Steel Electrolytic Tubes:
1. Corrosion Resistance: Stainless steel electrolytic tubes have excellent resistance to corrosion, which makes them ideal for use in harsh environments, including acid and alkaline conditions.
2. Durability: They are highly durable and can withstand high temperatures and pressures, making them long-lasting and reliable.
3. Hygienic Properties: Stainless steel is easy to clean and maintain, making it suitable for applications that require strict hygiene standards, such as in the food and pharmaceutical industries.
4. Strength: These tubes have high mechanical strength and can endure significant amounts of stress without deforming.
5. Recyclability: Stainless steel is recyclable, which makes these tubes environmentally friendly.
6. Aesthetic Appeal: They have a shiny and attractive appearance, which is beneficial for applications where aesthetics are important.

Disadvantages of Stainless Steel Electrolytic Tubes:
1. Cost: Stainless steel electrolytic tubes are generally more expensive than tubes made from other materials.
2. Weight: They can be heavier compared to alternative materials like aluminum or plastic, which may be a disadvantage in some applications.
3. Work Hardening: Stainless steel has a tendency to work harden, which can make machining and forming operations more difficult.
4. Thermal Conductivity: Stainless steel has relatively low thermal conductivity compared to other metals like copper, which can be a limitation in certain applications requiring efficient heat transfer.

Overall, the selection of stainless steel electrolytic tubes depends on the specific requirements of the application, balancing their benefits with their drawbacks.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com

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Analyzing of the workflow of a laser tube cutting machine
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Analysis of the workflow of a laser tube cutting machine:

Workflow Analysis of a Laser Tube Cutting Machine

1.Loading Automated Loading: High-end laser tube cutting machines often feature automated loading systems that can handle multiple tubes at once, which increases efficiency.
Manual Loading: Some systems require manual loading, particularly in smaller or less automated setups.

2.Positioning Alignment: The tube is aligned and secured in place to ensure precise cutting. This can be achieved through mechanical clamps or automated systems that adjust the position based on pre-programmed parameters.
Initial Calibration: The machine checks the initial position of the tube using sensors and adjusts accordingly. This step ensures the accuracy of the cuts.

3.Cutting Laser Generation: The laser source generates a high-intensity beam focused on the tube.
Movement System: CNC (Computer Numerical Control) systems guide the laser along the programmed path to cut the tube according to the desired specifications.
Cooling: Cooling systems protect the laser and the workpiece from overheating during the cutting process.

4.Quality Monitoring Real-time Monitoring: Advanced machines use cameras and sensors to monitor the cutting process in real time, checking for defects and ensuring quality.
Feedback Loop: Errors detected are communicated back to the control system, which can make real-time adjustments to the cutting parameters.

5.Sorting and Unloading Automated Sorting: After cutting, sections of the tube are sorted automatically based on their size, shape, or another criterion.
Unloading: The finished pieces are then unloaded, either manually or using an automated system, and prepared for the next stage of processing or delivery.

6.Post-processing (if necessary)
Deburring: Some cut tubes might require deburring to remove sharp edges.
Cleaning: The workpieces could require cleaning to remove any residual material or dirt.

7. Inspection Dimensional Inspection: Quality control checks the dimensions of the cut pieces to ensure they match the required specifications.
Surface Inspection: The surface quality is also inspected to ensure there are no defects or damages that might affect the product's functionality or appearance.

8. Packaging and Shipping Packaging: The finished tubes are packaged to prevent damage during transportation.
Shipping: The packaged tubes are then prepared for shipping to the customer or for further processing.

SummaryThe laser tube cutting machine's workflow involves several steps that ensure precision, efficiency, and quality. From loading the raw tubes to cutting, monitoring, and final inspection, each stage is crucial for delivering a high-quality product. Automated systems enhance the speed and accuracy of these processes, making laser tube cutting an efficient method for manufacturing tubular components.

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
Detail
Analysis of the workflow of a laser tube cutting machine:

Workflow Analysis of a Laser Tube Cutting Machine

1.Loading Automated Loading: High-end laser tube cutting machines often feature automated loading systems that can handle multiple tubes at once, which increases efficiency.
Manual Loading: Some systems require manual loading, particularly in smaller or less automated setups.

2.Positioning Alignment: The tube is aligned and secured in place to ensure precise cutting. This can be achieved through mechanical clamps or automated systems that adjust the position based on pre-programmed parameters.
Initial Calibration: The machine checks the initial position of the tube using sensors and adjusts accordingly. This step ensures the accuracy of the cuts.

3.Cutting Laser Generation: The laser source generates a high-intensity beam focused on the tube.
Movement System: CNC (Computer Numerical Control) systems guide the laser along the programmed path to cut the tube according to the desired specifications.
Cooling: Cooling systems protect the laser and the workpiece from overheating during the cutting process.

4.Quality Monitoring Real-time Monitoring: Advanced machines use cameras and sensors to monitor the cutting process in real time, checking for defects and ensuring quality.
Feedback Loop: Errors detected are communicated back to the control system, which can make real-time adjustments to the cutting parameters.

5.Sorting and Unloading Automated Sorting: After cutting, sections of the tube are sorted automatically based on their size, shape, or another criterion.
Unloading: The finished pieces are then unloaded, either manually or using an automated system, and prepared for the next stage of processing or delivery.

6.Post-processing (if necessary)
Deburring: Some cut tubes might require deburring to remove sharp edges.
Cleaning: The workpieces could require cleaning to remove any residual material or dirt.

7. Inspection Dimensional Inspection: Quality control checks the dimensions of the cut pieces to ensure they match the required specifications.
Surface Inspection: The surface quality is also inspected to ensure there are no defects or damages that might affect the product's functionality or appearance.

8. Packaging and Shipping Packaging: The finished tubes are packaged to prevent damage during transportation.
Shipping: The packaged tubes are then prepared for shipping to the customer or for further processing.

SummaryThe laser tube cutting machine's workflow involves several steps that ensure precision, efficiency, and quality. From loading the raw tubes to cutting, monitoring, and final inspection, each stage is crucial for delivering a high-quality product. Automated systems enhance the speed and accuracy of these processes, making laser tube cutting an efficient method for manufacturing tubular components.

For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com

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4.Operational Time
Utilization Rate: How often and for how long the machine is operated directly impacts total energy consumption.
Idle Time: Machines may consume energy even when not actively cutting, depending on the design and standby modes.
5.Maintenance and Consumables
Lens and Mirrors: Regular maintenance and replacement of optical components are necessary, adding to operational costs.
Assist Gases: Gases like oxygen, nitrogen, or compressed air are used in the cutting process and add to operating expenses.
6.Labor Costs
Operational Efficiency: Skilled operators can optimize machine performance, reducing waste and downtime.
Automation: Automated systems may reduce labor costs but require initial investment and maintenance.
7.Capital Depreciation
Machine Depreciation: Over the machine’s lifespan, depreciation costs contribute to overall operating costs. Higher initial investment means higher depreciation.
These calculations can be adjusted based on actual usage, efficiency, and local energy prices.

ConclusionThe energy consumption and operating costs of a laser tube cutting machine depend on multiple factors, including the type of laser, machine efficiency, material being cut, operational time, and maintenance requirements. By optimizing each of these factors, it’s possible to manage and reduce the overall operating costs effectively.
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4.Operational Time
Utilization Rate: How often and for how long the machine is operated directly impacts total energy consumption.
Idle Time: Machines may consume energy even when not actively cutting, depending on the design and standby modes.
5.Maintenance and Consumables
Lens and Mirrors: Regular maintenance and replacement of optical components are necessary, adding to operational costs.
Assist Gases: Gases like oxygen, nitrogen, or compressed air are used in the cutting process and add to operating expenses.
6.Labor Costs
Operational Efficiency: Skilled operators can optimize machine performance, reducing waste and downtime.
Automation: Automated systems may reduce labor costs but require initial investment and maintenance.
7.Capital Depreciation
Machine Depreciation: Over the machine’s lifespan, depreciation costs contribute to overall operating costs. Higher initial investment means higher depreciation.
These calculations can be adjusted based on actual usage, efficiency, and local energy prices.

ConclusionThe energy consumption and operating costs of a laser tube cutting machine depend on multiple factors, including the type of laser, machine efficiency, material being cut, operational time, and maintenance requirements. By optimizing each of these factors, it’s possible to manage and reduce the overall operating costs effectively.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com

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Laser tube cutting machines are intricate systems designed to cut metal tubes with high precision using laser technology:

1.Laser Source:This is the core component that generates the laser beam used for cutting. It can be of different types, such as CO2, fiber, or Nd:YAG lasers, each providing varying power levels and suitable for different materials and thicknesses.
2.Beam Delivery System: This system directs the laser beam from the laser source to the cutting head. It usually consists of mirrors and lenses ensuring the beam remains focused and consistent in power and quality.
3.Cutting Head:Includes a focusing lens, a nozzle, and sometimes a height sensor. The focusing lens concentrates the laser beam to a fine point for precise cutting. The nozzle directs assist gases (like oxygen or nitrogen) towards the cutting point, helping to clear molten material and enhance cutting quality.
4.Assist Gas System: Supplies gases (usually oxygen, nitrogen, or compressed air) required for the cutting process. Different gases are used based on the material being cut to achieve optimal cutting quality and speed.
5.Chuck and Rotary Axis: Holds and rotates the tube to position it accurately under the laser beam. These chucks can be adjusted to accommodate different tube sizes and shapes, ensuring secure and precise handling.
6.CNC Control System: The brain of the operation, this computer numerical control system runs the software that guides the laser cutting process. It handles the movement of the cutting head, the rotation of the chuck, and the application of assist gases per the programmed design.
7.Material Handling System: Includes loading and unloading mechanisms that manage the tubes before and after cutting. Automated systems can greatly enhance productivity by reducing manual intervention.
8.Cooling System: Maintains the temperature of the laser source and other critical components to ensure they operate efficiently and avoid overheating.
9.Exhaust and Filtration System: Removes fumes and particulates generated during the cutting process, ensuring a clean working environment and protecting sensitive components from contamination.
10.Safety Features: Includes protective barriers, interlock switches, and emergency stop buttons to ensure operator safety during machine operation.

Each of these components must function optimally and in harmony to achieve precise and efficient tube cutting with minimal wastage and high-quality outputs.
For more information, please pay attention to the website of Jinyujie Mechanical and Electrical Used Pipe Mill Supplier:www.usedpipemill.com

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Laser tube cutting machines are intricate systems designed to cut metal tubes with high precision using laser technology:

1.Laser Source:This is the core component that generates the laser beam used for cutting. It can be of different types, such as CO2, fiber, or Nd:YAG lasers, each providing varying power levels and suitable for different materials and thicknesses.
2.Beam Delivery System: This system directs the laser beam from the laser source to the cutting head. It usually consists of mirrors and lenses ensuring the beam remains focused and consistent in power and quality.
3.Cutting Head:Includes a focusing lens, a nozzle, and sometimes a height sensor. The focusing lens concentrates the laser beam to a fine point for precise cutting. The nozzle directs assist gases (like oxygen or nitrogen) towards the cutting point, helping to clear molten material and enhance cutting quality.
4.Assist Gas System: Supplies gases (usually oxygen, nitrogen, or compressed air) required for the cutting process. Different gases are used based on the material being cut to achieve optimal cutting quality and speed.
5.Chuck and Rotary Axis: Holds and rotates the tube to position it accurately under the laser beam. These chucks can be adjusted to accommodate different tube sizes and shapes, ensuring secure and precise handling.
6.CNC Control System: The brain of the operation, this computer numerical control system runs the software that guides the laser cutting process. It handles the movement of the cutting head, the rotation of the chuck, and the application of assist gases per the programmed design.
7.Material Handling System: Includes loading and unloading mechanisms that manage the tubes before and after cutting. Automated systems can greatly enhance productivity by reducing manual intervention.
8.Cooling System: Maintains the temperature of the laser source and other critical components to ensure they operate efficiently and avoid overheating.
9.Exhaust and Filtration System: Removes fumes and particulates generated during the cutting process, ensuring a clean working environment and protecting sensitive components from contamination.
10.Safety Features: Includes protective barriers, interlock switches, and emergency stop buttons to ensure operator safety during machine operation.

Each of these components must function optimally and in harmony to achieve precise and efficient tube cutting with minimal wastage and high-quality outputs.
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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