Usually used for diameters greater than 50mm
2020年11月27日Disadvantages are detection speed is slow, need to wet coupling agent, the system is complex. Therefore, in general, if there is no special note, the magnetic flux leakage detection of steel pipe usually refers to the magnetic field measurement method.
Sensitivity is moderate; shortcomings are: by the external magnetic field interference, uneven pipe material interference, the tube side of the blind area. Such as increasing the detection speed, the system will be more complex..Ultrasonic testing of the internal and external surface and internal defects are very sensitive. Therefore, 2344 steel Factory it is suitable for testing high quality requirements of seamless steel tubes, such as high pressure boiler tubes and high pressure fertilizer pipes, etc.The magnetic flux leakage testing technology of steel pipe is mainly divided into two kinds: magnetic particle detection method and magnetic field measurement method.7mm of the pipe.
Usually used for diameters greater than 50mm, wall thickness less than 12., can also be used in accordance with user requirements instead of steel pipe hydraulic test.Ultrasonic flaw detection is mainly used to detect the steel pipe inside and outside the surface and its internal longitudinal defects, according to user needs can also detect lateral defects. The speed of longitudinal detection is usually about 20 μm / min, and the speed of lateral detection is usually about 10 μm / min. Have a higher detection sensitivity, the cracks in the steel pipe, straight and other defects are more sensitive, but also to detect non-metallic inclusions and other volume-type defects. However, due to the slow detection speed, it is difficult to carry out rapid on-line inspection on the production line of steel pipe, so it is generally used as the off-line inspection method of high quality steel pipe, which is usually used for pipe with diameter greater than 50mm and wall thickness greater than 3mm.
Although the latter complex equipment, high cost and difficult to operate, but it is through the sensor to pick up the leakage magnetic field information, so easy to achieve automated testing, suitable for high-volume steel pipe automatic inspection. Advantages are: high sensitivity, can detect the tube end, can be quantitative detection. Its advantages are: detection speed, no coupling agent. High cost, low cost of consumables required.Using the magnetic flux leakage method to detect the outer surface of the pipe and a certain wall thickness of the internal surface defect sensitivity. The former is simple, but requires the naked eye to observe the magnetic marks, so it is difficult to achieve automation
Sensitivity is moderate; shortcomings are: by the external magnetic field interference, uneven pipe material interference, the tube side of the blind area. Such as increasing the detection speed, the system will be more complex..Ultrasonic testing of the internal and external surface and internal defects are very sensitive. Therefore, 2344 steel Factory it is suitable for testing high quality requirements of seamless steel tubes, such as high pressure boiler tubes and high pressure fertilizer pipes, etc.The magnetic flux leakage testing technology of steel pipe is mainly divided into two kinds: magnetic particle detection method and magnetic field measurement method.7mm of the pipe.
Usually used for diameters greater than 50mm, wall thickness less than 12., can also be used in accordance with user requirements instead of steel pipe hydraulic test.Ultrasonic flaw detection is mainly used to detect the steel pipe inside and outside the surface and its internal longitudinal defects, according to user needs can also detect lateral defects. The speed of longitudinal detection is usually about 20 μm / min, and the speed of lateral detection is usually about 10 μm / min. Have a higher detection sensitivity, the cracks in the steel pipe, straight and other defects are more sensitive, but also to detect non-metallic inclusions and other volume-type defects. However, due to the slow detection speed, it is difficult to carry out rapid on-line inspection on the production line of steel pipe, so it is generally used as the off-line inspection method of high quality steel pipe, which is usually used for pipe with diameter greater than 50mm and wall thickness greater than 3mm.
Although the latter complex equipment, high cost and difficult to operate, but it is through the sensor to pick up the leakage magnetic field information, so easy to achieve automated testing, suitable for high-volume steel pipe automatic inspection. Advantages are: high sensitivity, can detect the tube end, can be quantitative detection. Its advantages are: detection speed, no coupling agent. High cost, low cost of consumables required.Using the magnetic flux leakage method to detect the outer surface of the pipe and a certain wall thickness of the internal surface defect sensitivity. The former is simple, but requires the naked eye to observe the magnetic marks, so it is difficult to achieve automation
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