Method and device for removing inner surface oxidized iron sheet of steel pipe on line
A technology of iron oxide scale and inner surface, which is applied in workpiece surface treatment equipment, metal processing equipment, metal rolling, etc., can solve problems such as overacid corrosion, grinding, shot blasting difficulties, lengthen the production cycle of steel pipes, etc., and achieve cost improvement , Reduce the effect of the finishing process
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[0026] As shown in the figure, a method for removing the oxide scale on the inner surface of steel pipes is the third roller table and the fourth roller table of the outgoing roller table between the walking reheating furnace 9 and the high-pressure water descaling box 8. A water spray car 1 equipped with a water spray device was designed and manufactured. The water spray car 1 is controlled by the push-pull cylinder 1-3 of the car, and the nozzle 1-1 is controlled by a high-pressure pneumatic shut-off valve, and a hot metal detector is installed at the end of the steel pipe. 4 After detection, the water spray car 1 runs, the high-pressure pneumatic shut-off valve is opened, the nozzle 1-1 on the water spray car 1 sprays a certain flow of high-pressure water into the inner hole of the steel pipe, and the water spray car 1 runs for a certain distance with the steel pipe. After the PLC program controls to extend the water spraying time, the water spraying trolley 1 stops spraying ...
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