Continuous rolling method of billet and apparatus therefor

Details Continuous rolling method of billet and apparatus therefor Continuous rolling method of billet and apparatus therefor

1997-04-30

1999-09-28

Heinrich, Samuel M.

Metal fusion bonding

Process

With shaping

228 57, B23K 3700, B21B 124

Patent

active

059573678

ABSTRACT:
A continuous rolling method includes the steps of: flash-butt welding a rear end of a preceding billet with a front end of a succeeding billet; grinding the welded portion to remove a burr on the welded portion; heating the continuous billet; and rolling the continuous billet through a series of rolling mills. The flash-butt welding step includes joining the rear end of the preceding billet with the front end of the succeeding billet by using the stationary welder and joining the billets having at least double the length of the preceding billet by using the travelling welder. A continuous rolling apparatus includes a stationary flash-butt welder, a travelling flash-butt welder, a travelling grinding machine, an induction heater and a series of continuous rolling mills.

REFERENCES:
patent: 4294394 (1981-10-01), Iida et al.
patent: 4850522 (1989-07-01), Nichols
patent: 5172846 (1992-12-01), Hayashi et al.
Patent Abstracts of Japan, vol. 016, No. 346 (M-1286), Jul. 27, 1992 & JP 04-105701 A (Hitachi Ltd.), Apr. 7, 1992, Abstract.
Patent Abstracts of Japan, vol. 003, No. 011 (C-035) Jan. 30, 1979 & JP 53-135863 A (Nippon Steel Corp.), Nov. 27, 1978, Abstract.
Stahl und Eisen, vol. 78, No. 16, Aug. 7, 1958, pp. 1130-1132, XP002028237, Weidemann, H.: "Das Auswalsen `Endlos` Zisammengeschweisster Knueppel"--Figures 2, 3.

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