Borescope Camera Application:Precision seamless steel pipe is a kind of high precision steel pipe after cold rolling or cold drawing. At present, precision seamless steel pipe has been widely used in automobiles, motorcycles, electric power, machinery, hydraulic fittings, bearings, pneumatic components, Fuel tanks, coal mines, transportation, boiler equipment, pipelines, engineering and other fields. With the quality requirements of seamless steel pipe getting higher and higher, so the detection of precision seamless steel pipe has become an indispensable part of seamless steel pipe production, quality inspection, factory testing, acceptance.
The current testing of precision seamless steel pipe is mainly nondestructive testing, the most commonly used is ultrasonic testing and borescope camera test. The use of ultrasonic testing of seamless steel pipe, through the interaction of ultrasound and seamless steel pipe .on the reflection, transmission and refraction of waves to achieve the purpose of seamless steel pipe testing. However, ultrasonic testing of seamless steel pipe defects qualitative, quantitative, still need further study.
Recently, a number of seamless steel pipe manufacturers for the production of a batch of seamless steel tubes, their own ultrasonic testing and found no defects, the results of the customer acceptance, discovered the defects of seamless steel tubes, leading to the customer refused to receive. The seamless steel pipe manufacturers to ultrasonic testing of "qualified" products using high-performance micro borescope camera, will find tiny "spot", the scene will be seamless steel pipe sawing, these tiny "spot" is a defect of seamless steel pipe sunken. The incident is not by accident, there are many similar related incidents, so ultrasonic seamless steel pipe testing is not absolutely accurate.
It is precisely because of the limitations of ultrasonic testing of seamless steel tubes, the current seamless steel pipe testing began with other non-destructive testing program. Borescope camera seamless steel pipe is an important non-destructive testing of seamless steel pipe, ultrasonic testing can complement each other, ultrasonic testing can not find defects, with the help of borescope cameras (such as QBH borescope camera); Therefore, ultrasonic testing and industrial The combination of speculum detection has become the most important non-destructive testing method for seamless steel pipe.
The use of high-performance video borescope camera detection of seamless steel pipe, the industrial endoscopic lens tube directly into the seamless steel pipe, intuitive and accurate detection of seamless steel pipe internal surface quality, such as cracks, incomplete penetration, slag, side Incomplete wall welding, sag, leakage and other similar defects, the seamless steel pipe detection accuracy and speed, so the industrial endoscopy seamless steel pipe testing become an essential tool.
In summary, the current seamless steel pipe testing becomes a seamless steel pipe production, quality inspection, factory inspection, acceptance and other important parts, and borescope camera seamless steel pipe internal inspection, can reduce the manufacturing loss of raw materials in the product phase, Reduce the cost of customer returns loss, extend product life cycle, precise product performance and many other aspects of great significance.