| Chengdu Iron and Steel Co., Ltd, Pangang Group is a major producer of seamless steel pipe domestic manufacturers, The product specifications gradient, complex end-user products, mainly oil, electricity, chemicals, metallurgy, machinery and other industries, seamless steel pipe wall thickness is an extremely important characteristic parameters, Pipe manufacturers, but also give users control and ensure that the primary parameters. With the development of the national economy, these industries before delivery of seamless steel tubes of varying degrees of thickness measurement requirements. To satisfy the needs of the production line should gage length of the entire cross-section configuration automatic detection devices.Seamless Steel Pipe wall thickness of the domestic detection technology, especially in the research and development of technology and equipment-line thickness measurement and the use of the status quo shows: Seamless Steel Tube line thickness measurement technology researchers at the initial stage, but not the shape of products and applications. Currently a small number of imported equipment used, conditions of use and limited in scope, but also higher prices. Foreign development and application has been relatively high, development of the entire length of its cross-section pipe-line ultrasonic thickness measurement equipment used mainly directed to probe rotation with a combination of methods for thickness measurement, only a handful of spiral pipe and use a combination of methods for measuring static probe thick. The advantage is a smaller number of channels: instrument and probe can lower the cost of measurement components. Weaknesses are: to be seized pipe specifications, the size and shape of high precision mechanical design was difficult. High precision machining, pick up signals difficult, greatly increasing the design of mechanical components. Manufacturing cost and maintenance cost. General domestic production of the pipe and the complexity of the shape and size and precision. Obviously, the length of the entire cross-section of foreign direct line ultrasonic thickness measurement equipment, neither can meet the requirements of the economy.In view of the limited liability company Chengdu Iron and Steel Co., Ltd, Pangang Group actual steel production and demand, independent development of the entire length of seamless steel pipe section line ultrasonic thickness measuring device. Static probe can be used, the sum of the core pipe technology program, making complex system has been streamlined and has manufacturing, easy installation, high reliability and easy maintenance, pick up the signal on the need special skills, but also pipe specifications. Size and shape precision range for novelty and practicality.Independent development of the entire length of seamless steel pipe section line ultrasonic thickness measuring devices include mechanical systems, Water System, jet systems, control systems, measurement systems and systems software in five parts. This paper focuses on the research and development of mechanical devices to the system design.Mechanical systems from the main base, the guide roller, roller compactor, compress roll movements, ranging round, ultrasonic thickness measurement devices and adjustment institutions. All organizations are installed at the base, the overall use of equipment for the production line. In the design of mechanical systems to create a number of simple and practical technique or body-adaptive pressure, thickness suitcase floating bodies, synchronous movements, water sealing technology, clever design and practical work to improve the reliability of the device. Adaptability has expanded the scope of testing to meet the requirements of the different specifications of seamless steel pipe wall thickness testing, reduce the size and status of the accuracy of seamless steel tubes, the design, manufacture and operation and maintenance costs greatly reduced.The paper also introduces the other major components and systems theory. Its main function is to make the water cycle system fully escape the air, a large low-pressure flow of influent, pick up ultrasonic signals to ensure accuracy; Jet system from spray cans, position adjustment, electric pressure on top form, controlled by the PLC. Automatic Manual may, the main point is the over-marking paint; PLC control system as the core control, PLC, sensor, various input / output driver modules and related components; measuring system and a computer network as the core, from data acquisition and signal analysis and processing system (stations), data communications, Stations (also known as PC or server) and the control system can produce. Overall control and display system to use a computer, stable and reliable, intuitive, advanced. In the sensor designed and manufactured measurement software, a key technical breakthrough in a closed form.Developed the device manufacturers, installation, debugging, and then for no-load test and actual field test. The results showed that self-development the device of the entire length of seamless steel pipe-line ultrasonic thickness measuring technology performance and design requirements of the agreement, acceptance. Development is a success, and customer satisfaction. The device being developed at home and abroad were no major technical characteristics similar to the relevant literature, novelty. The device is a multidisciplinary collection into an integrated detection system, similar technology at home and abroad, high reliability with low failure rate, in the development, operation and maintenance costs, with the obvious advantage. In addition to the devices used in the pipe-line manufacturers, can be used off-line for the end-users of steel tube products, also a better value. Meanwhile compared with foreign equipment, the installation of both sets of prices are good or adaptive competitive edge. Therefore in this paper the development of the entire length of seamless steel pipe section line ultrasonic thickness measuring devices have a good market prospects.
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