| 摘要 |
To provide a tube coating installation for coating the outside of a steel tubular article moving continuously in its axial direction, having a tube advancing device, a tube heating station, an epoxy-resin coating station, a coupling-agent coating station, a coupling-agent heating station, a polyethylene coating station, a polyethylene cooling station, a coating-thickness measuring device, a pore-testing device, a tube-marking device and a tube-separating device, the coating-thickness measuring device using a measuring head which can be rotated about the axis of the tube to measure the coating thickness of the coating formed by epoxy resin, coupling agent and polyethylene, in which installation an exact measuring of the coating thickness even in the event of temperature fluctuations in the coating is made possible by a measuring head for a coating-thickness measuring device, the measuring head (28) of the coating-thickness measuring device (20) has an eddy-current sensor (39) for measuring the outer contour (40) of the tubular article (3) and a laser distance sensor (41) for measuring the outer contour (42) of the coating (22). |
