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Used round tube forming machines induction heating welding seam heat treatment method
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- Release time：2022-04-08 11:30
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【概要描述】According to the steel types and mechanical properties listed in Table 2, the main heat treatment methods to improve the comprehensive performance of welds include normalizing treatment, normalizing + tempering treatment, quenching + tempering treatment and other methods. At present, domestic used round tube forming machines mostly use weld normalizing treatment in the production of welded pipes, and other heat treatment methods have not yet been used. The most advanced heat treatment of welded pipes is quenching and tempering. In foreign large-scale welded pipe production lines, normalizing treatment is often used, and quenching and tempering treatment is only used by individual companies in Japan, the United States and the European Union. Induction heating and tempering treatment of welds is the future direction of development.
Used round tube forming machines induction heating welding seam heat treatment method
【概要描述】According to the steel types and mechanical properties listed in Table 2, the main heat treatment methods to improve the comprehensive performance of welds include normalizing treatment, normalizing + tempering treatment, quenching + tempering treatment and other methods. At present, domestic used round tube forming machines mostly use weld normalizing treatment in the production of welded pipes, and other heat treatment methods have not yet been used. The most advanced heat treatment of welded pipes is quenching and tempering. In foreign large-scale welded pipe production lines, normalizing treatment is often used, and quenching and tempering treatment is only used by individual companies in Japan, the United States and the European Union. Induction heating and tempering treatment of welds is the future direction of development.
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Detail
Pipeline steels are mainly among the steels whose welds require heat treatment to improve their mechanical properties. Steels used for different strength grades and their room temperature requirements are listed in Table 2.
According to the steel types and mechanical properties listed in Table 2, the main heat treatment methods to improve the comprehensive performance of welds include normalizing treatment, normalizing + tempering treatment, quenching + tempering treatment and other methods. At present, domestic used round tube forming machines mostly use weld normalizing treatment in the production of welded pipes, and other heat treatment methods have not yet been used. The most advanced heat treatment of welded pipes is quenching and tempering. In foreign large-scale welded pipe production lines, normalizing treatment is often used, and quenching and tempering treatment is only used by individual companies in Japan, the United States and the European Union. Induction heating and tempering treatment of welds is the future direction of development.
(1) Induction heating and normalizing of welds. The normalizing of welds includes annealing, which is sometimes called stress relief annealing. The welding seam induction heating and normalizing treatment is to heat the weld seam to a temperature above Ac3, and then air-cool it to below 400 ℃ and water-cool it to room temperature after 900-950 ℃. The used round tube forming machines can eliminate the internal stress of welding, refine the grains of the weld, improve the microstructure, and improve the plasticity and impact toughness of the weld. Induction heating and normalizing treatment of welds is suitable for ordinary low-alloy steel and some low-alloy high-strength steels, equivalent to welded pipes below X60 steel grade. The induction heating annealing treatment of the weld is to heat the weld to 700-750 ℃ dual-phase region, and then air-cool to normal temperature, in order to eliminate the internal stress of the welding and improve the plasticity. Annealing treatment is mainly used for carbon steel and some ordinary low alloy steel welded pipes.
(2) Induction heating normalizing + tempering treatment of the weld seam. When the hardness of the weld seam is still high and the plasticity is still low after normalizing treatment, high temperature tempering treatment can be used to remedy. Induction heating and tempering treatment is to heat the weld to a temperature below Ac1, usually air-cooled at about 650°C. After high temperature tempering treatment, the martensite structure in the original steel is transformed into tempered sorbite and ferrite, the plasticity of the weld increases, and the hardness decreases and the strength changes little.
(3) Weld induction heating quenching + tempering treatment, this heat treatment method is also called quenching and tempering treatment. The online welding seam induction heating quenching and tempering treatment of used round tube forming machines is the most advanced heat treatment technology. After the quenching and tempering treatment, the comprehensive mechanical properties of the welded seam completely reach the level of the pipe body, and the performance of the welded seam and the pipe body is uniform. The core of realizing this heat treatment technology is to master the transverse magnetic field heating technology to ensure the uniform and accurate heating temperature. For low-alloy high-strength steel and micro-alloyed high-strength steel welds, the quenching heating temperature is 900-950 ℃, and the tempering heating temperature is 600-650 ℃. The quenching adopts spray cooling, and the tempering adopts air cooling and water cooling combined cooling. . When the quenching and tempering temperature is heated by longitudinal magnetic field, the accuracy of temperature control can reach ±10℃, which is the necessary temperature control level for high-strength welded pipes to maintain stable performance. The use of transverse magnetic fields to heat welds also requires high temperature control accuracy.
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Analysis of seven key factors affecting the effective power output of second-hand high-frequency welded pipe machines
Time of issue : 2024-08-25
High frequency welded pipe machine is widely used in modern industry, especially in the pipe manufacturing industry. It is highly favored by users for its high efficiency and precision. In order to better understand and master this technology, this article will use the keyword "second-hand welded pipe machine" and combine it with practical applications to analyze the seven key factors of its effective power output.
Firstly, we need to clarify the definition of 'second-hand welded pipe machine'. Second hand welded pipe machine refers to equipment that has been used but has been repaired and debugged before being put back into use. Due to its newer production technology and lower purchasing costs, it has become an ideal choice for many small and medium-sized enterprises. However, understanding the influencing factors of power output issues that arise during use, especially in high-frequency and high-intensity operating environments, is crucial.
1. The aging degree of the equipment itself: The components of the second-hand welding pipe machine will wear and age to varying degrees over time, which directly affects the stability of its power output. The maintenance and regular inspection of equipment can reduce this impact.
2. Operating environment: Factors such as humidity, temperature, and electromagnetic interference also have a significant impact on the operation of second-hand welded pipe machines. Maintaining a good working environment is crucial for the effective power output of equipment.
3. Debugging and Calibration: Before the second-hand welded pipe machine is put back into use, it needs to undergo strict debugging and calibration to ensure that all parameters reach their optimal state. This has a significant impact on the stability and power output of the device.
4. Operational skills: Proficient operational skills are the key to ensuring the efficient operation of second-hand welded pipe machines. Familiar with device characteristics and able to flexibly adjust operating parameters can significantly improve power output efficiency.
5. Power quality: Unstable power supply can cause fluctuations in the power output of second-hand welded pipe machines. The use of high-quality power equipment to ensure stable voltage and current is the foundation for ensuring the normal operation of the equipment.
6. Maintenance: Regular maintenance can effectively extend the service life of second-hand welded pipe machines and help stabilize power output. During maintenance, key parts such as welding joints, cooling systems, and electrical components should be carefully inspected.
7. Load adaptability: The power output of a second-hand welded pipe machine is not only affected by the equipment itself, but also by its matching with the load. Appropriate load distribution and reasonable production scheduling can comprehensively improve the operational efficiency of equipment.
In summary, a comprehensive understanding and mastery of the seven key factors mentioned above can significantly improve the effective power output of second-hand high-frequency welded pipe machines, extend equipment life, and lay a solid foundation for enterprises to save costs and improve production efficiency. Mastering these key points will undoubtedly result in twice the result with half the effort when choosing and using a second-hand welded pipe machine.
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
High frequency welded pipe machine is widely used in modern industry, especially in the pipe manufacturing industry. It is highly favored by users for its high efficiency and precision. In order to better understand and master this technology, this article will use the keyword "second-hand welded pipe machine" and combine it with practical applications to analyze the seven key factors of its effective power output.
Firstly, we need to clarify the definition of 'second-hand welded pipe machine'. Second hand welded pipe machine refers to equipment that has been used but has been repaired and debugged before being put back into use. Due to its newer production technology and lower purchasing costs, it has become an ideal choice for many small and medium-sized enterprises. However, understanding the influencing factors of power output issues that arise during use, especially in high-frequency and high-intensity operating environments, is crucial.
1. The aging degree of the equipment itself: The components of the second-hand welding pipe machine will wear and age to varying degrees over time, which directly affects the stability of its power output. The maintenance and regular inspection of equipment can reduce this impact.
2. Operating environment: Factors such as humidity, temperature, and electromagnetic interference also have a significant impact on the operation of second-hand welded pipe machines. Maintaining a good working environment is crucial for the effective power output of equipment.
3. Debugging and Calibration: Before the second-hand welded pipe machine is put back into use, it needs to undergo strict debugging and calibration to ensure that all parameters reach their optimal state. This has a significant impact on the stability and power output of the device.
4. Operational skills: Proficient operational skills are the key to ensuring the efficient operation of second-hand welded pipe machines. Familiar with device characteristics and able to flexibly adjust operating parameters can significantly improve power output efficiency.
5. Power quality: Unstable power supply can cause fluctuations in the power output of second-hand welded pipe machines. The use of high-quality power equipment to ensure stable voltage and current is the foundation for ensuring the normal operation of the equipment.
6. Maintenance: Regular maintenance can effectively extend the service life of second-hand welded pipe machines and help stabilize power output. During maintenance, key parts such as welding joints, cooling systems, and electrical components should be carefully inspected.
7. Load adaptability: The power output of a second-hand welded pipe machine is not only affected by the equipment itself, but also by its matching with the load. Appropriate load distribution and reasonable production scheduling can comprehensively improve the operational efficiency of equipment.
In summary, a comprehensive understanding and mastery of the seven key factors mentioned above can significantly improve the effective power output of second-hand high-frequency welded pipe machines, extend equipment life, and lay a solid foundation for enterprises to save costs and improve production efficiency. Mastering these key points will undoubtedly result in twice the result with half the effort when choosing and using a second-hand welded pipe machine.
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
Analysis of the problem of non squareness in the adjustment of square and rectangular tubes and the method of correcting vertical rollers
Time of issue : 2024-08-24
Product feature introduction
Economical and cost-effective
Firstly, the price of second-hand welded pipe machines is relatively low, which is their most intuitive advantage. For small and medium-sized enterprises, purchasing second-hand equipment can effectively reduce initial investment costs while ensuring the basic functions and production efficiency of the equipment. This makes second-hand square tube machines highly competitive and cost-effective in the market.
Multi functional and easy to maintain
Another major selling point of second-hand welded pipe machines is their versatility. After appropriate adjustments and maintenance, these machines can produce steel pipes of different specifications and shapes to meet diverse market demands. In addition, the maintenance cost of second-hand equipment is usually lower because at the time of purchase, suppliers often provide detailed usage records and maintenance guidelines for the equipment, making it easier for users to perform daily maintenance and repair minor faults.
The issue of 'non square' in the adjustment process
In the process of using a second-hand square tube machine to produce square and rectangular tubes, a common problem is the phenomenon of "square and rectangular tubes not being square". Specifically, this means that the produced square or rectangular pipes have uneven edges, angles, or lengths on each side, which can affect the quality and aesthetics of the product. The main reasons for this problem are improper machine tool parameter settings, roller wear, and differences in material quality.
Correction method of vertical roller
In order to solve the problem of "non square", the use of standing rollers is particularly important. Vertical roller is a tool used to adjust the shape of pipes. By setting the pressure and position of the vertical roller reasonably, the formed square tube can be calibrated to meet the standard requirements in terms of appearance. In the specific operation, the staff need to gradually adjust the angle and force of the vertical roller according to the actual deviation of the square tube, until the various dimensions of the square tube meet the standards.
Application scenarios and instance analysis
The second-hand welded pipe machine is not only suitable for standardized production, but also meets personalized customization needs. Taking construction sites and pipeline installation projects as examples, these fields often require steel pipes of different sizes and shapes. By adjusting the vertical rollers, the second-hand welded pipe machine can quickly produce square and rectangular pipes that meet specific requirements, greatly improving production efficiency and product quality.
Overall, second-hand square tube machines have become an ideal choice in the market due to their affordability, versatility, and ease of maintenance. By setting up and using vertical rollers reasonably, it is possible to effectively address the issue of "non square" in production and ensure product quality. These unique selling points not only make second-hand welded pipe machines shine in industrial manufacturing, but also bring significant economic benefits to enterprises.
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
Product feature introduction
Economical and cost-effective
Firstly, the price of second-hand welded pipe machines is relatively low, which is their most intuitive advantage. For small and medium-sized enterprises, purchasing second-hand equipment can effectively reduce initial investment costs while ensuring the basic functions and production efficiency of the equipment. This makes second-hand square tube machines highly competitive and cost-effective in the market.
Multi functional and easy to maintain
Another major selling point of second-hand welded pipe machines is their versatility. After appropriate adjustments and maintenance, these machines can produce steel pipes of different specifications and shapes to meet diverse market demands. In addition, the maintenance cost of second-hand equipment is usually lower because at the time of purchase, suppliers often provide detailed usage records and maintenance guidelines for the equipment, making it easier for users to perform daily maintenance and repair minor faults.
The issue of 'non square' in the adjustment process
In the process of using a second-hand square tube machine to produce square and rectangular tubes, a common problem is the phenomenon of "square and rectangular tubes not being square". Specifically, this means that the produced square or rectangular pipes have uneven edges, angles, or lengths on each side, which can affect the quality and aesthetics of the product. The main reasons for this problem are improper machine tool parameter settings, roller wear, and differences in material quality.
Correction method of vertical roller
In order to solve the problem of "non square", the use of standing rollers is particularly important. Vertical roller is a tool used to adjust the shape of pipes. By setting the pressure and position of the vertical roller reasonably, the formed square tube can be calibrated to meet the standard requirements in terms of appearance. In the specific operation, the staff need to gradually adjust the angle and force of the vertical roller according to the actual deviation of the square tube, until the various dimensions of the square tube meet the standards.
Application scenarios and instance analysis
The second-hand welded pipe machine is not only suitable for standardized production, but also meets personalized customization needs. Taking construction sites and pipeline installation projects as examples, these fields often require steel pipes of different sizes and shapes. By adjusting the vertical rollers, the second-hand welded pipe machine can quickly produce square and rectangular pipes that meet specific requirements, greatly improving production efficiency and product quality.
Overall, second-hand square tube machines have become an ideal choice in the market due to their affordability, versatility, and ease of maintenance. By setting up and using vertical rollers reasonably, it is possible to effectively address the issue of "non square" in production and ensure product quality. These unique selling points not only make second-hand welded pipe machines shine in industrial manufacturing, but also bring significant economic benefits to enterprises.
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
Analysis of the problem of non squareness in the adjustment of square and rectangular tubes by second-hand square tube machines and the method of correcting vertical rollers
Innovation of intelligent heat treatment for welds: detailed explanation of online quenching+tempering (Q+T) technology
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Company address:No. A99, East Lecong Avenue, Lecong Town, Foshan City, Guangdong Province
Wechat: 13392281699
Email: zty@usedpipemill.com
Company address:No. A99, East Lecong Avenue, Lecong Town, Foshan City, Guangdong Province
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