Electric heating – Metal heating – Of cylinders
Patent
1997-06-10
1999-08-24
Shaw, Clifford C.
Electric heating
Metal heating
Of cylinders
B23K 1301
Patent
active
059421320
ABSTRACT:
A method of producing steel pipes is provided which comprises the steps of providing a steel strip, processing the steel strip into a preheated open pipe, preheating the open pipe at its two opposite longitudinal edges at a temperature higher than about the Curie point, heating the open pipe at the two opposite edges at a temperature higher than about 1,300.degree. C. but lower than the melting point of the steel strip, pressure welding the resultant open pipe with a squeeze roll to thereby form a steel pipe, smoothing the steel pipe at its thick-walled portion formed on an outer surface of the welded seam, and subsequently cutting or winding the resulting steel pipe. An apparatus adapted to form the steel pipes is also provided.
REFERENCES:
patent: 3015018 (1961-12-01), Rudd
patent: 3523513 (1970-08-01), Maier et al.
patent: 3539760 (1970-11-01), Rudd
patent: 3539761 (1970-11-01), Rudd
patent: 3729124 (1973-04-01), Kedzior et al.
patent: 3944775 (1976-03-01), Worden
patent: 4223196 (1980-09-01), Erlandson et al.
patent: 4830258 (1989-05-01), Lentz et al.
patent: 5140123 (1992-08-01), Mitani
patent: 5567335 (1996-10-01), Baessler et al.
Amagasa Toshiaki
Hashimoto Yuji
Itadani Motoaki
Ohnishi Toshio
Sugano Koji
Kawasaki Steel Corporation
Miller Austin R.
Shaw Clifford C.
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