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Factors and various influences to ensure the quality of used high frequency welded pipe machine welded pipe products（1）
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- Release time：2023-02-19 11:30
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【概要描述】In the process of producing welded pipes with used high frequency welded pipe machine, 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 high frequency welded pipe machine welded pipe products（1）
【概要描述】In the process of producing welded pipes with used high frequency welded pipe machine, 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.
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- Release time：2023-02-19 11:30
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In the process of producing welded pipes with used high frequency welded pipe machine, 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.
The influence of raw materials on the welding quality of steel pipes
The main factors affecting the quality of raw materials are the unstable mechanical properties of the steel strip, the surface defects of the steel strip and the large deviation of geometric dimensions. Therefore, key control should be carried out from these three aspects.
Influence of mechanical properties of steel strips on the quality of steel pipes
The commonly used steel grades for welded steel pipes are carbon structural steel, the main grades are Q195, Q215, Q235, SPCC, SS400, SPHC and so on. The yield point and tensile strength of the steel strip are too high, which will make the forming of the steel strip difficult, especially when the pipe wall is thick, the resilience of the material is large, and the steel pipe has a large deformation stress when welding the used high frequency welded pipe machine. the weld is prone to cracks. When the tensile strength of the steel strip exceeds 635 MPa and the elongation is less than 10 %, the welding seam of the steel strip is prone to cracking during the welding process. When the tensile strength is lower than 300MPa, the surface of the steel strip is easy to wrinkle due to the soft material during the forming process. It can be seen that the mechanical properties of the material have a great influence on the quality of the steel pipe, and the quality of the steel pipe should be effectively controlled from the aspect of material strength.
Influence of Surface Defects of Steel Strip on the Quality of Steel Pipe
Common surface defects of steel strips include camber, wavy, slitting edge, etc. camber and wavy generally appear in the rolling process of cold-rolled steel strip, which is caused by improper control of reduction. In the process of steel pipe forming, the camber bend and wave shape will cause the strip to deviate or turn over, which is easy to cause lap welding of the steel pipe weld and affect the quality of the steel pipe. The gnawing edge of the steel strip (that is, the phenomenon that the edge of the steel strip is jagged and uneven) generally occurs on the slitting belt, which is caused by the blunt or unsharp edge of the slitting machine disc. Due to the gnawing of the steel strip, there is always a local lack of meat, which makes the steel strip prone to cracks and cracks during welding and affects the stability of the weld quality.
Influence of the geometrical dimensions of the steel strip on the quality of the steel pipe
When the width of the steel strip is less than the allowable deviation, the extrusion force when welding the steel pipe is reduced, so that the welding seam of the steel tube is not firmly welded, and cracks or open pipes appear; when the width of the steel strip is greater than the allowable deviation, the welding of the steel pipe will The extrusion force increases, and welding defects such as sharp nose, lap welding or burr appear at the welding seam of the steel pipe. Therefore, the fluctuation of the width of the steel strip not only affects the accuracy of the outer diameter of the steel pipe, but also seriously affects the surface quality of the steel pipe. For the steel pipe that requires the wall thickness difference of the same section not to exceed the specified value, that is, the steel pipe that requires a high degree of uniformity of wall thickness, the fluctuation of the thickness of the steel strip will transfer the excess of the allowable value of the thickness difference of the same coil of steel strip to the wall thickness difference of the finished steel pipe. , so that the thickness of a large number of steel pipes exceeds the allowable deviation and is discarded. The thickness fluctuation not only affects the thickness accuracy of the finished steel pipe, but at the same time, due to the different thickness of the steel strip, the extrusion force and welding temperature of the steel pipe are unstable during welding, resulting in unstable weld quality during welding of the steel pipe. In addition, due to the existence of interlayer, impurities, trachoma and other material defects in the steel, it is also an important factor affecting the quality of the steel pipe. Therefore, before the steel strip is welded, the surface quality and geometric dimensions of each roll of steel strip should be checked. If the quality of the steel strip does not meet the standard requirements, do not carry out production, so as to avoid unnecessary losses.
Influence of high frequency welding on the quality of steel pipes
In the process of high-frequency welding of steel pipes in used high frequency welded pipe machine, the control of welding process and process parameters, the placement of induction coils and impedance resistors, etc. have a great influence on the welding quality of steel pipe welds.
Influence of roll adjustment on steel pipe quality
It can be seen from the causal analysis diagram of steel pipe waste that roll adjustment is an operation process of steel pipe. In the production process of used high frequency welded pipe machine, when the rolls are damaged or severely worn, some of the rolls need to be replaced on the unit, or a certain variety has been continuously produced in sufficient quantities, and the entire set of rolls needs to be replaced. At this time, the rolls should be adjusted to obtain good steel pipe quality. If the rolls are not well adjusted, it is easy to cause defects such as twisting, lap welding, edge waves, bulges and indentations or scratches on the surface of the pipe body, large ovality of the steel pipe, etc. Skill.
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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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Wechat: 13392281699
Email: zty@usedpipemill.com
Company address:No. A99, East Lecong Avenue, Lecong Town, Foshan City, Guangdong Province
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