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Factors and various influences to ensure the quality of used HFW pipe equipments welded pipe products (2)

Factors and various influences to ensure the quality of used HFW pipe equipments welded pipe products (2)

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  • Release time:2022-04-04 11:30
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【概要描述】In the process of producing welded pipes with used HFW pipe equipments, how to ensure that the product quality meets the requirements of technical standards and the needs of customers, it is necessary to analyze the factors affecting product quality in the production process of steel pipes.

Factors and various influences to ensure the quality of used HFW pipe equipments welded pipe products (2)

【概要描述】In the process of producing welded pipes with used HFW pipe equipments, how to ensure that the product quality meets the requirements of technical standards and the needs of customers, it is necessary to analyze the factors affecting product quality in the production process of steel pipes.

  • Sort:Information
  • Auth:
  • Source:
  • Release time:2022-04-04 11:30
  • Pvs:
Detail

In the process of producing welded pipes with used HFW pipe equipments, how to ensure that the product quality meets the requirements of technical standards and the needs of customers, it is necessary to analyze the factors affecting product quality in the production process of steel pipes.

 

Through the statistics of unqualified products of a Φ76mm high-frequency welded steel pipe unit in a certain month, it is believed that the factors affecting the quality of steel pipe products in the production process include raw materials, welding process, roll adjustment, roll material, equipment failure, production environment and other reasons. seven aspects. Among them, raw materials account for 32.44%, welding process accounts for 24.85%, roll adjustment accounts for 22.72%, and the three together account for 80.01%, which are the main links. The four factors, such as roll material, equipment failure, production environment and other reasons, account for 19.99% of the impact on the quality of steel pipe products, which are relatively minor links. Therefore, in the process of steel pipe production, the three links of raw materials, welding process and roll adjustment should be controlled.

 

Used HFW pipe equipments

 

Control of Welding Seam Gap of Steel Pipe

After the steel strip enters the used HFW pipe equipments and is formed by the forming roller and the guide roller is oriented, a circular steel pipe blank with an opening gap is formed. Both ends of the welded joint remain flush. If the weld gap is controlled too large, the weld will be poorly welded and cause unfusion or cracking; if the weld gap is controlled too small, the weld will be burned due to excessive heat, and the molten metal will splash, which will affect the welding quality of the weld. 

 

Adjustment of the position of the high frequency induction coil

The induction coil should be placed on the same center line as the steel pipe, and the distance between the front end of the induction coil and the center line of the extrusion roller should be as close as possible to the specification of the steel pipe without burning the extrusion roller. If the induction coil is far from the squeeze roller, the effective heating time will be longer and the heat affected zone will be wide, which will reduce the strength of the steel pipe weld or not penetrate it; otherwise, the induction coil will easily burn the squeeze roller.

 

Control of Impedance Position

Impedance is one or a group of special magnetic rods for welded pipes. The cross-sectional area of the impedance should usually not be less than 70% of the cross-sectional area of the inner diameter of the steel pipe. Proximity effect is produced, and the eddy current heat is concentrated near the edge of the tube blank weld, so that the edge of the tube blank is heated to the welding temperature. The resistor should be placed in the heating section of the V-shaped area, and the front end should be at the center of the squeeze roller, so that its centerline is consistent with the centerline of the tube. If the position of the resistor is not well placed, the welding speed and welding quality of the welded pipe will be affected, and the steel pipe will be cracked.

 

High frequency welding process parameters - control of input heat

The heat input by the high-frequency power supply to the welded part of the steel pipe is called the input heat. When converting electrical energy into heat energy, the formula for the input heat is: Q=KI2 Rt (1) In the formula, Q—the heat input to the tube blank; K—energy conversion efficiency; I—welding current; R—circuit impedance; t—heating time.

Heating time: t=Lv (2), where L—the center distance from the front end of the induction coil or the electrode head to the squeeze roller; v—the welding speed.

 

Used HFW pipe equipments

 

When the heat input by the high frequency is insufficient and the welding speed is too fast, the edge of the heated pipe body cannot reach the welding temperature, and the steel still maintains its solid structure and cannot be welded, forming unfused or incompletely welded cracks; When the high-frequency input heat is too large and the welding speed is too slow, the edge of the heated pipe body exceeds the welding temperature, which is prone to overheating or even overburning, which will break down the weld and cause metal splashes to form shrinkage cavities. It can be seen from formulas (1) and (2) that the amount of high-frequency input heat can be controlled by adjusting the high-frequency welding current (voltage) or the welding speed, so that the weld of the steel pipe needs to be penetrated without being damaged. Weld through to obtain steel pipes with excellent welding quality.

 

When changing the steel pipe specifications, the entire set of rolls is generally replaced.

The method of roll adjustment is: use steel wire to draw a center line from the entrance to the exit of theused HFW pipe equipments, and adjust it so that the hole patterns of each frame are on a center line, and the bottom line of the forming meets the technical requirements. After changing the roll specifications, first make a comprehensive adjustment to the forming roll, guide roll, squeeze roll and sizing roll, and then focus on the adjustment of the closed hole pattern, guide roll and squeeze roll of the forming roll.

 

The function of the guide roller is to control the direction of the pipe seam of the steel pipe and the height of the bottom line of the pipe blank, ease the edge extension, control the rebound of the edge of the pipe blank, and ensure that the pipe seam is straight and not twisted into the extrusion roller. During the welding process, it is easy to cause welding defects such as torsion, lap welding and edge waves of the steel pipe seam.

 

The squeeze roller is the key equipment of the used HFW pipe equipments. Its function is to complete the pressure welding of the pipe body whose edge is heated to the welding temperature under the action of the extrusion force of the squeeze roller. In the production process, it is necessary to control the size of the opening angle of the extrusion roll. When the extrusion force is too small, the strength of the weld metal will decrease, and cracks will occur after being stressed; when the extrusion force is too large, the welding strength will be reduced, and the amount of external burrs will increase, which is likely to cause welding defects such as lap welding.

 

In the process of slow start of the used HFW pipe equipments, pay close attention to the rotation of the rolls in various parts, and adjust the rolls at any time to ensure that the welding quality and process dimensions of the welded pipe meet the specified requirements.

 

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A thorough evaluation before purchasing a used pipe welding machine
A thorough evaluation before purchasing a used pipe welding machine
Before purchasing a second-hand pipe welding machine, it is necessary to conduct a comprehensive evaluation to ensure the performance, cost performance and suitability of the equipment. Here are the key assessment steps:

1.Equipment condition check
Appearance inspection: Check whether the equipment has obvious damage, rust or deformation.
Core component inspection: Focus on inspecting key components such as welding joints, transmission systems, and electrical systems to ensure that there is no serious wear or failure.
Operation test: Conduct trial operation to observe whether the equipment runs smoothly and whether the welding quality meets the requirements.

2.Equipment history
Service life: Understand the use time of the equipment, usually the longer the service life, the higher the risk of failure.
Maintenance records: Check the maintenance and repair records of the equipment to determine whether it is well maintained.
Working environment: Understand the working environment before the equipment, harsh environment may lead to increased equipment wear.

3.Technical parameters
Production capacity: Confirm whether the production capacity of the equipment meets the demand, including welding speed, pipe diameter range, etc.
Accuracy requirements: Check the welding accuracy of the equipment to ensure that it meets the production standard.
Compatibility: Confirm whether the equipment can be adapted to existing production lines or raw materials.

4.Brand and model
Brand reputation: Choose a well-known brand, usually the quality and after-sales service is more guaranteed.
Model suitability: Ensure that the model is suitable for current production needs and avoid insufficient or excessive functions.

5.Price evaluation
Market conditions: Understand the market price of the same type of equipment, to avoid too high or too low prices.
Cost performance: Considering the equipment condition, performance and price, choose cost-effective equipment.

6.After-sales service
Warranty Period: Confirm whether the equipment is under warranty, or whether the warranty can be extended.
Technical Support: Find out if the supplier provides technical support or repair services.
Accessories supply: Confirm that equipment accessories are easy to obtain to avoid the risk of stopping production.

7.Legal and Compliance
Equipment legitimacy: Ensure that the source of equipment is legitimate, avoid buying stolen goods or illegal equipment.
Compliance: Verify that the equipment meets local safety standards and environmental requirements.

8.Supplier reputation
Supplier background: Choose suppliers with good reputation to reduce the risk of purchase.
User Reviews: View other users' reviews of suppliers to understand their service quality and equipment condition.

9.Transportation and installation
Transportation costs: Consider the transportation costs of equipment, especially large equipment.
Installation and commissioning: Confirm whether the supplier provides installation and commissioning services to ensure the normal use of the equipment.

10.Contract Terms
Clear terms: Ensure that key information such as equipment condition, price, warranty period, etc. is clear in the contract.
Return Policy: Understand the return policy to avoid the inability to return if the equipment does not meet the requirements.

Summary
The purchase of second-hand pipe welding machine needs to consider the equipment status, history, technical parameters, price, after-sales service and other factors to ensure that the equipment meets the production demand and is cost-effective.

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
Before purchasing a second-hand pipe welding machine, it is necessary to conduct a comprehensive evaluation to ensure the performance, cost performance and suitability of the equipment. Here are the key assessment steps:

1.Equipment condition check
Appearance inspection: Check whether the equipment has obvious damage, rust or deformation.
Core component inspection: Focus on inspecting key components such as welding joints, transmission systems, and electrical systems to ensure that there is no serious wear or failure.
Operation test: Conduct trial operation to observe whether the equipment runs smoothly and whether the welding quality meets the requirements.

2.Equipment history
Service life: Understand the use time of the equipment, usually the longer the service life, the higher the risk of failure.
Maintenance records: Check the maintenance and repair records of the equipment to determine whether it is well maintained.
Working environment: Understand the working environment before the equipment, harsh environment may lead to increased equipment wear.

3.Technical parameters
Production capacity: Confirm whether the production capacity of the equipment meets the demand, including welding speed, pipe diameter range, etc.
Accuracy requirements: Check the welding accuracy of the equipment to ensure that it meets the production standard.
Compatibility: Confirm whether the equipment can be adapted to existing production lines or raw materials.

4.Brand and model
Brand reputation: Choose a well-known brand, usually the quality and after-sales service is more guaranteed.
Model suitability: Ensure that the model is suitable for current production needs and avoid insufficient or excessive functions.

5.Price evaluation
Market conditions: Understand the market price of the same type of equipment, to avoid too high or too low prices.
Cost performance: Considering the equipment condition, performance and price, choose cost-effective equipment.

6.After-sales service
Warranty Period: Confirm whether the equipment is under warranty, or whether the warranty can be extended.
Technical Support: Find out if the supplier provides technical support or repair services.
Accessories supply: Confirm that equipment accessories are easy to obtain to avoid the risk of stopping production.

7.Legal and Compliance
Equipment legitimacy: Ensure that the source of equipment is legitimate, avoid buying stolen goods or illegal equipment.
Compliance: Verify that the equipment meets local safety standards and environmental requirements.

8.Supplier reputation
Supplier background: Choose suppliers with good reputation to reduce the risk of purchase.
User Reviews: View other users' reviews of suppliers to understand their service quality and equipment condition.

9.Transportation and installation
Transportation costs: Consider the transportation costs of equipment, especially large equipment.
Installation and commissioning: Confirm whether the supplier provides installation and commissioning services to ensure the normal use of the equipment.

10.Contract Terms
Clear terms: Ensure that key information such as equipment condition, price, warranty period, etc. is clear in the contract.
Return Policy: Understand the return policy to avoid the inability to return if the equipment does not meet the requirements.

Summary
The purchase of second-hand pipe welding machine needs to consider the equipment status, history, technical parameters, price, after-sales service and other factors to ensure that the equipment meets the production demand and is cost-effective.

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 
The connection between pipe welding mechanism and furniture industry,
The connection between pipe welding mechanism and furniture industry,
There is a close relationship between pipe (steel pipe manufactured by welding process) and the furniture industry, especially in modern furniture design and manufacturing, welded pipe is more and more widely used. The following are the main relationships and specific applications of the two:

1. Material basis: Welded pipe as the skeleton material of furniture
Structural support: Steel pipes made of welded pipes are often used in the frame structure of furniture, such as chair legs, table supports, bed frames, bookshelves, etc. Its high strength and stability can withstand large loads.
Lightweight design: Compared with solid steel, welded pipe is lightweight and low cost, suitable for furniture requiring portability or simple design (such as outdoor folding tables and chairs).

2. Design flexibility
Diversified modeling: Welded pipes can be processed into complex shapes through bending, cutting, welding and other processes to meet the curve or geometric design needs of modern furniture (such as streamlined bar chairs, creative shelves).
Industrial style: The exposed metal welded pipe structure is the iconic element of industrial furniture, often used in cafes, LOFT Spaces and other scenes.

3. Functionality and durability
Outdoor furniture: Galvanized welded pipes or steel pipes treated with anti-rust are often used in outdoor furniture (such as garden tables and chairs, balcony guardrail), with strong weather resistance.
Load-bearing requirements: The high strength characteristics of welded pipes are suitable for the production of storage shelves, shelves and other furniture requiring high load-bearing.

4. Production process coordination
Mass production: The efficient production mode of welded pipe mechanism is matched with the large-scale demand of furniture manufacturing, reducing raw material costs.
Customized processing: Furniture factories can customize welded pipes of different specifications (such as diameter and wall thickness) according to design requirements to improve product adaptability.

5. Environmental Protection and Sustainability
Material recycling: Steel can be recycled, in line with the design concept of environmentally friendly furniture.
Surface treatment: Spraying, painting and other processes can improve the beauty and durability of welded pipe furniture, while reducing the environmental burden.

6. Market trends
Modular furniture: The standardized interface of welded pipe structure is easy to assemble and disassemble, catering to the popular trend of modular furniture.
Cross-border combination: Welded pipes are often combined with wood, glass, plastic and other materials to create a mixed-match style (such as metal + wood dining tables).

Typical Application Case
Office furniture: Steel desk bracket, conference chair frame.
Home Decoration: Metal bookshelf, coat rack, lamp stand.
Public Facilities: Park benches, shopping mall display shelves.

Summary
The welded pipe mechanism provides the furniture industry with an economical, durable and flexible material solution that drives innovation in the function, aesthetics and sustainability of modern furniture. Its combination with furniture is not only an extension of industrial technology, but also an expansion of design language.

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
There is a close relationship between pipe (steel pipe manufactured by welding process) and the furniture industry, especially in modern furniture design and manufacturing, welded pipe is more and more widely used. The following are the main relationships and specific applications of the two:

1. Material basis: Welded pipe as the skeleton material of furniture
Structural support: Steel pipes made of welded pipes are often used in the frame structure of furniture, such as chair legs, table supports, bed frames, bookshelves, etc. Its high strength and stability can withstand large loads.
Lightweight design: Compared with solid steel, welded pipe is lightweight and low cost, suitable for furniture requiring portability or simple design (such as outdoor folding tables and chairs).

2. Design flexibility
Diversified modeling: Welded pipes can be processed into complex shapes through bending, cutting, welding and other processes to meet the curve or geometric design needs of modern furniture (such as streamlined bar chairs, creative shelves).
Industrial style: The exposed metal welded pipe structure is the iconic element of industrial furniture, often used in cafes, LOFT Spaces and other scenes.

3. Functionality and durability
Outdoor furniture: Galvanized welded pipes or steel pipes treated with anti-rust are often used in outdoor furniture (such as garden tables and chairs, balcony guardrail), with strong weather resistance.
Load-bearing requirements: The high strength characteristics of welded pipes are suitable for the production of storage shelves, shelves and other furniture requiring high load-bearing.

4. Production process coordination
Mass production: The efficient production mode of welded pipe mechanism is matched with the large-scale demand of furniture manufacturing, reducing raw material costs.
Customized processing: Furniture factories can customize welded pipes of different specifications (such as diameter and wall thickness) according to design requirements to improve product adaptability.

5. Environmental Protection and Sustainability
Material recycling: Steel can be recycled, in line with the design concept of environmentally friendly furniture.
Surface treatment: Spraying, painting and other processes can improve the beauty and durability of welded pipe furniture, while reducing the environmental burden.

6. Market trends
Modular furniture: The standardized interface of welded pipe structure is easy to assemble and disassemble, catering to the popular trend of modular furniture.
Cross-border combination: Welded pipes are often combined with wood, glass, plastic and other materials to create a mixed-match style (such as metal + wood dining tables).

Typical Application Case
Office furniture: Steel desk bracket, conference chair frame.
Home Decoration: Metal bookshelf, coat rack, lamp stand.
Public Facilities: Park benches, shopping mall display shelves.

Summary
The welded pipe mechanism provides the furniture industry with an economical, durable and flexible material solution that drives innovation in the function, aesthetics and sustainability of modern furniture. Its combination with furniture is not only an extension of industrial technology, but also an expansion of design language.

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 
Application of high precision steel pipe produced by pipe welding machine in modern industry
Application of high precision steel pipe produced by pipe welding machine in modern industry
The high-precision steel pipe produced by pipe welding machine is widely used in modern industry, and its production process and quality control requirements are strict. The following is a summary of the relevant technical points and application scenarios:

1. The characteristics of high-precision steel pipe
High dimensional accuracy: small outer diameter, wall thickness tolerance (usually up to ±0.05mm), low ellipticity.
Excellent surface quality: smooth weld without burrs, surface finish Ra≤0.8μm.
Stable mechanical properties: weld strength close to the base material, uniform compressive/tensile properties.
Applicable materials: stainless steel (304/316L), carbon steel, alloy steel (such as API series), etc.

2. Core production process
(1) Type of pipe welding machine
High-frequency welding (HFW) : high efficiency, suitable for medium thin wall pipe (Φ10~Φ600mm), need to cooperate with precision forming unit.
Laser welding: small heat affected zone, narrow weld (0.1~0.3mm), suitable for ultra-thin walls (such as 0.3mm) or special alloys.
TIG welding: For high alloy steel or thick wall pipe, higher weld purity.
(2) Key process links
Forming process: multi-roll continuous cold forming, dynamic adjustment of roll parameters to compensate for rebound.
Welding control:
High frequency welding: precise control of current frequency (100~400kHz) and extrusion amount.
Laser welding: focus position accuracy ±0.05mm, real-time depth monitoring (such as CCD vision).
Online detection:
Eddy current inspection (ET) : Detection of surface cracks.
Ultrasonic inspection (UT) : detection of internal defects (sensitivity Φ0.5mm equivalent flat hole).
Laser caliper: Outer diameter closed loop control (accuracy ±0.01mm).

3. Post-processing technology
Heat treatment: bright annealing (hydrogen nitrogen protection atmosphere) to eliminate stress, hardness fluctuation ≤3HRC.
Straightening: multi-roll precision straightening, straightness ≤0.5mm/m.
Surface treatment:
Electrolytic polishing (EP) : For medical/food grade stainless steel tubes, Ra up to 0.2μm.
Coating: hot dip galvanizing (zinc layer ≥80μm) or electroless nickel plating (uniform thickness ±2μm).

4. Typical application areas
Automobile manufacturing: fuel injection pipe (tolerance ±0.03mm), hydraulic pipe.
Semiconductor equipment: Ultra-high clean gas delivery pipe (inner wall EP treatment, particle ≤Class 5).
Medical instruments: endoscopic catheter (Φ1~5mm, wall thickness 0.1mm).
Energy industry: Instrument tubes for nuclear power plants (SA213-TP347H material, intergranular corrosion test passed).

5. Quality control standards
International standard:
ASTM A269 (Universal Seamless and Welded Austenitic Stainless Steel Pipe)
EN 10305-4 (Precision welded pipes for hydraulic systems)
Industry certification: ISO 9001, PED 2014/68/EU (Pressure Equipment Directive).

6. Technological trends
Intelligent production: AI algorithm optimizes welding parameters, and the yield is increased to more than 99.5%.
Composite process: laser + arc composite welding, both efficiency and quality (speed increased by 30%).
Green manufacturing: low energy high frequency power supply (efficiency ≥90%), waste acid recovery ≥95%.

Through the above process optimization and strict quality control, the high-precision steel pipe produced by the pipe welding machine can meet the demanding requirements of size, performance and reliability in high-end industrial fields. In actual production, the process route needs to be customized according to the material characteristics and uses, for example, medical tubes need to undergo additional passivation treatment and biocompatibility testing.

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
The high-precision steel pipe produced by pipe welding machine is widely used in modern industry, and its production process and quality control requirements are strict. The following is a summary of the relevant technical points and application scenarios:

1. The characteristics of high-precision steel pipe
High dimensional accuracy: small outer diameter, wall thickness tolerance (usually up to ±0.05mm), low ellipticity.
Excellent surface quality: smooth weld without burrs, surface finish Ra≤0.8μm.
Stable mechanical properties: weld strength close to the base material, uniform compressive/tensile properties.
Applicable materials: stainless steel (304/316L), carbon steel, alloy steel (such as API series), etc.

2. Core production process
(1) Type of pipe welding machine
High-frequency welding (HFW) : high efficiency, suitable for medium thin wall pipe (Φ10~Φ600mm), need to cooperate with precision forming unit.
Laser welding: small heat affected zone, narrow weld (0.1~0.3mm), suitable for ultra-thin walls (such as 0.3mm) or special alloys.
TIG welding: For high alloy steel or thick wall pipe, higher weld purity.
(2) Key process links
Forming process: multi-roll continuous cold forming, dynamic adjustment of roll parameters to compensate for rebound.
Welding control:
High frequency welding: precise control of current frequency (100~400kHz) and extrusion amount.
Laser welding: focus position accuracy ±0.05mm, real-time depth monitoring (such as CCD vision).
Online detection:
Eddy current inspection (ET) : Detection of surface cracks.
Ultrasonic inspection (UT) : detection of internal defects (sensitivity Φ0.5mm equivalent flat hole).
Laser caliper: Outer diameter closed loop control (accuracy ±0.01mm).

3. Post-processing technology
Heat treatment: bright annealing (hydrogen nitrogen protection atmosphere) to eliminate stress, hardness fluctuation ≤3HRC.
Straightening: multi-roll precision straightening, straightness ≤0.5mm/m.
Surface treatment:
Electrolytic polishing (EP) : For medical/food grade stainless steel tubes, Ra up to 0.2μm.
Coating: hot dip galvanizing (zinc layer ≥80μm) or electroless nickel plating (uniform thickness ±2μm).

4. Typical application areas
Automobile manufacturing: fuel injection pipe (tolerance ±0.03mm), hydraulic pipe.
Semiconductor equipment: Ultra-high clean gas delivery pipe (inner wall EP treatment, particle ≤Class 5).
Medical instruments: endoscopic catheter (Φ1~5mm, wall thickness 0.1mm).
Energy industry: Instrument tubes for nuclear power plants (SA213-TP347H material, intergranular corrosion test passed).

5. Quality control standards
International standard:
ASTM A269 (Universal Seamless and Welded Austenitic Stainless Steel Pipe)
EN 10305-4 (Precision welded pipes for hydraulic systems)
Industry certification: ISO 9001, PED 2014/68/EU (Pressure Equipment Directive).

6. Technological trends
Intelligent production: AI algorithm optimizes welding parameters, and the yield is increased to more than 99.5%.
Composite process: laser + arc composite welding, both efficiency and quality (speed increased by 30%).
Green manufacturing: low energy high frequency power supply (efficiency ≥90%), waste acid recovery ≥95%.

Through the above process optimization and strict quality control, the high-precision steel pipe produced by the pipe welding machine can meet the demanding requirements of size, performance and reliability in high-end industrial fields. In actual production, the process route needs to be customized according to the material characteristics and uses, for example, medical tubes need to undergo additional passivation treatment and biocompatibility testing.

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 
The relationship between pipe welding machine and automobile frame manufacturing
The relationship between pipe welding machine and automobile frame manufacturing
The relationship between pipe welding machine and automobile frame manufacturing is mainly reflected in the production process, material selection and process optimization. The following is a technical analysis of the relationship between the two:

1.The role of pipe welding machine in the manufacture of automobile frame
Pipe production: The welding pipe machine is used to manufacture high-precision welded steel pipes, which constitute the longitudinal beams, beams, anti-collision beams and other key components of the automobile frame. High frequency welding (HFW) or laser welding technology can produce steel pipes with uniform wall thickness and strength of more than 800MPa to meet the needs of lightweight.
Customized processing: Through flexible forming technology, the welding machine can produce special-shaped cross section pipes (such as rectangular, trapezoidal), adapt to the topology optimization design of different models of frames, improve space utilization and impact energy absorption efficiency.

2.The core requirements of the welding pipe process for automobile frames
Material properties: DP600/DP800 duplex steel or 22MnB5 thermoforming steel should be used, and online heat treatment (such as induction annealing) should be carried out after welding to ensure the microstructure consistency between the weld zone and the base material and avoid HAZ (heat affected zone) softening.
Dimensional accuracy: Diameter tolerance should be controlled within ±0.2mm, ellipticity ≤0.5%, to ensure the matching accuracy of the assembly and stamping parts (clearance <0.5mm).

3.Key technology breakthrough point
Laser-MAG composite welding: the penetration depth can reach 8mm, the welding speed is increased to 6m/min, the heat input is reduced by 30%, and the welding deformation of the frame is significantly reduced (≤1.5mm/m).
Online quality monitoring: high-speed CCD vision system (sampling rate 2000fps) with eddy current detection, to achieve real-time detection of weld defects, miss rate <0.01%.

4.Cost-performance balance
Compared with the stamping and welding structure, the welded pipe frame can reduce the weight by 15-20%, the material utilization rate is increased to 95%, and the manufacturing cost of the bicycle is reduced by about 1200 yuan. However, it is necessary to increase the investment in roller forming molds (about 2 million yuan/set).

5.Industry Application Cases
- An independent brand pure level station adopts 3D variable cross-section welded pipe subframe, with torsional rigidity increased to 27000Nm/°, 40% higher than the traditional structure, and the battery pack space utilization increased by 12%.

Conclusion
The penetration rate of welded pipe technology in the field of automotive frames is growing at a rate of 8% per year, and future development directions include:
Intelligent welded pipe system (digital twin model real-time control molding parameters)
Magnesium alloy /CFRP composite pipe welding process
Topological optimization driven continuous forming technology for variable thickness pipes

It is recommended to pay attention to the update of the ISO 15614 standard and the latest certification requirements for automotive welded pipe processes in ASME BPVC Section IX to ensure technical compliance.

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
The relationship between pipe welding machine and automobile frame manufacturing is mainly reflected in the production process, material selection and process optimization. The following is a technical analysis of the relationship between the two:

1.The role of pipe welding machine in the manufacture of automobile frame
Pipe production: The welding pipe machine is used to manufacture high-precision welded steel pipes, which constitute the longitudinal beams, beams, anti-collision beams and other key components of the automobile frame. High frequency welding (HFW) or laser welding technology can produce steel pipes with uniform wall thickness and strength of more than 800MPa to meet the needs of lightweight.
Customized processing: Through flexible forming technology, the welding machine can produce special-shaped cross section pipes (such as rectangular, trapezoidal), adapt to the topology optimization design of different models of frames, improve space utilization and impact energy absorption efficiency.

2.The core requirements of the welding pipe process for automobile frames
Material properties: DP600/DP800 duplex steel or 22MnB5 thermoforming steel should be used, and online heat treatment (such as induction annealing) should be carried out after welding to ensure the microstructure consistency between the weld zone and the base material and avoid HAZ (heat affected zone) softening.
Dimensional accuracy: Diameter tolerance should be controlled within ±0.2mm, ellipticity ≤0.5%, to ensure the matching accuracy of the assembly and stamping parts (clearance <0.5mm).

3.Key technology breakthrough point
Laser-MAG composite welding: the penetration depth can reach 8mm, the welding speed is increased to 6m/min, the heat input is reduced by 30%, and the welding deformation of the frame is significantly reduced (≤1.5mm/m).
Online quality monitoring: high-speed CCD vision system (sampling rate 2000fps) with eddy current detection, to achieve real-time detection of weld defects, miss rate <0.01%.

4.Cost-performance balance
Compared with the stamping and welding structure, the welded pipe frame can reduce the weight by 15-20%, the material utilization rate is increased to 95%, and the manufacturing cost of the bicycle is reduced by about 1200 yuan. However, it is necessary to increase the investment in roller forming molds (about 2 million yuan/set).

5.Industry Application Cases
- An independent brand pure level station adopts 3D variable cross-section welded pipe subframe, with torsional rigidity increased to 27000Nm/°, 40% higher than the traditional structure, and the battery pack space utilization increased by 12%.

Conclusion
The penetration rate of welded pipe technology in the field of automotive frames is growing at a rate of 8% per year, and future development directions include:
Intelligent welded pipe system (digital twin model real-time control molding parameters)
Magnesium alloy /CFRP composite pipe welding process
Topological optimization driven continuous forming technology for variable thickness pipes

It is recommended to pay attention to the update of the ISO 15614 standard and the latest certification requirements for automotive welded pipe processes in ASME BPVC Section IX to ensure technical compliance.

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