To provide a processing method and a processing system of seam welded steel pipe inner surface bead chips, for reducing the size of a pipe making line, by easily discharging the chips, even if a blow process of the inner surface bead chips is not arranged in the pipe making line, by not only smoothly and stably performing processing of the inner surface bead chips, even if a traveling speed of a seam welded steel pipe on the pipe making line is faster than 60 m/min.
A technology for discharging and removing generated belt-like chips outside the pipe, is improved by cutting an inner surface bead formed in a pressure contact seam of an upper inner surface of a traveling seam welded steel pipe on the pipe making line of the seam welded steel pipe for bringing its both ends into pressure contact by a squeeze roll, by molding a steel strip in a cylindrical shape. A cutting position of the inner surface bead is changed in response to a traveling speed of the seam welded steel pipe, and its change is moved to the downstream side in the pipe making direction along a manufacturing line in response to an increase in the traveling speed, and the chips are guided to the upstream side in the pipe making direction, and are cut by extracting upward from a steel strip position existing in a semicylindrical state.
WAKABAYASHI KIYOSHI
KIHARA SHOJI
MORIOKA NOBUHIKO
ONISHI TOSHIO
Masaki Yamada
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