| 摘要 |
PURPOSE:To directly monitor the internal surface of a steel tube and to improve the quality of a product by running a remotely-controlled monitoring device main body which is controlled to run in the opposite direction from the pipe production in an electric resistance welded tube in the pipe production and stopping it corresponding to an external necessary position, and then collecting information on the shape of an internal bead part, heat treatment temperature, etc., there. CONSTITUTION:The remotely-controlled monitoring device main body 11 is inserted into the electric resistance welded tube P1 which is being manufactured between a sizing stand 9 and a cutting machine 10 from the tip of the electric resistance welded tube in the opposite direction from the pipe production at a faster speed than the tube production. At the same time, an external controller 25, etc., equalize the speed of the main body 11 to the pipe producing speed so that the main body stops at the position of, for example, an external postannealer 7. An information collecting means 19 provided to the main body 11 collects information on the shape of the internal bead part of the steel tube P1, heat treatment temperature, etc., and this information is transmitted to the outside by a transmitter receiver 22 to control, for example, an internal bead cutting device and the annealer 7 according to the information.
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