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| dentification and detection system for head and tail of seamless steel pipe |
| WANG Xiaowen,LIU Tao，TONG Kai |
| NCS Testing Technology Co.，Ltd.，Beijing 100081，China |
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Abstract Seamless steel pipes are widely used in many industrial sites such as oil pipe, boiler pipe and highpressure transmission pipe, and the production demand is very large. Due to the control restrictions in detection, the spacing between steel pipes is usually 36 m. In order to improve the productivity and reduce the blind area at pipe ends, the automatic flaw detection process needs to adopt the continuous feeding mode, that is, the steel pipes are continuously transmitted one by one. Because of the small gap, it is difficult for the traditional sensor to distinguish the end signal of the steel pipe and send it to the ultrasonic flaw detector, resulting in the detection results cannot match the corresponding steel pipe well, which also has a corresponding impact on the automatic sorting and blanking. In order to improve this phenomenon, a steel pipe head and tail detection device was designed. When the steel pipe ran to the entrance of the detection host, that was, when the head and tail of two steel pipes collided with each other, the detection device would send an arrival signal of new steel pipe within 0.1 s. It notified the PLC control system to make corresponding signal processing, and sent it to the automatic flaw detection system to start flaw detection.
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Received: 11 October 2021
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2022, Vol. 40 
