Mitsubishi Jukogyo Kabushiki Kaisha

Kawasaki Steel Corporation

Other

Mitsubishi Heavy Industries Limited

Kenichi Unoki

Chiaki Kato

Kazumasa Mihara

Toshitane Matsukawa

Noriyuki Kawada

Ritsuo Hashimoto

Masahiko Tada

Motomi Nakashima

Hiroshi Nakajima

Youichi Wakiyama

Noriyuki Kawata

Yasuo Hukada

A hot dip coating apparatus enables stable and continuous production of a coated steel strip having a high degree of uniformity of the coating quality over the breadth of the steel strip and clean coated surfaces free of deposition of dross. The hot dip coating apparatus has a bottom slit through which a steel strip to be coated is introduced and pulled upward through the coating tank, and an electromagnetic sealing device which applies a magnetic field to the molten metal in the coating tank so as to hold the molten metal inside the tank. The coating tank is provided at its top with an overflow dam for allowing the molten mental to overflow out of the coating tank. The apparatus also has a molten metal supply system which produces a circulating flow of the molten metal through the coating tank. The molten metal supply system has molten metal buffers which communicate with a molten metal supply passage and from which the molten metal is discharged towards the steel strip.

Hot dip coating apparatus

A hot dip coating apparatus and method, enables stable and continuous production of a coated steel strip having a high degree of uniformity of the coating quality over the breadth of the steel strip and clean coated surfaces free of deposition of dross. The hot dip coating apparatus has a bottom slit through which a steel strip to be coated is introduced and pulled upward through the coating tank, and an electromagnetic sealing device which applies a magnetic field to the molten metal in the coating tank so as to hold the molten metal inside the tank. The coating tank is provided at its top with an overflow dam for allowing the molten metal to overflow out of the coating tank. The apparatus also has a molten metal supply system which produces a circulating flow of the molten metal through the coating tank. The molten metal supply system has molten metal buffers which communicate with a molten metal supply passage and from which the molten metal is discharged towards the steel strip.

Hot dip coating apparatus and method

Method and apparatus for holding molten metal

A continuous casting device includes a pair of cooling rolls (1, 2) that rotate in opposite directions to each other. A pair of side weirs (11) have inner surfaces (11a) that covers the end surfaces (1a, 2a) of the cooling rolls (1, 2) and circular surfaces (12b) that covers the peripheral surfaces (1b, 2b) of the cooling rolls (1, 2). At least one of the side weirs (11) is movable in an axial direction of the cooling rolls (1, 2). The continuous casting device also includes electromagnets for forming a magnetic flux in a direction parallel with a contact surface of the side weirs (11) with the molten metal (4) the contact surface extending along the peripheral surfaces (1b, 2b) of the cooling rolls (1, 2) at the portions opposite to the peripheral surfaces (1b, 2b) of the cooling rolls (1, 2) of the side weirs (11).

Continuous casting device

In a molten metal holding apparatus in which an alternating magnetic flux is generated in the horizontal direction at a lower end portion of a molten metal and the molten metal 7 is held within an upper and lower opening container 6 by an electromagnetic force, solid conductors 8 which are not strong magnetic substances are attached to inner surfaces of both side plates 6x of a portion where the alternating magnetic flux passes through of the upper and lower opening container 6. Further, an apparatus including a circuit 3 to overlay a direct current on an exciting coil 2 or an exciting device 20 to let a direct current magnetic flux act is disclosed.

Molten metal holding apparatus

Growing community of inventors

Hiroshima, Japan

Kenichi Unoki