Hot saw cutting type continuous rolling method and apparatus thereof
AssigneeNKK Corporation
InventorsSusumu Okawa, Giichi Matsuo
Life of this patent
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Abstract
A hot saw cutting type continuous rolling method comprises casting two strand billets continuously; cutting the billets to predetermined length by hot saws; directly feeding billet portions obtained by cutting onto a rolling line via a line connecting device; continuously welding and joining the billets portions by a flash butt welder to form a continuous billet; grinding and removing burrs at the welded portion of the continuous billet by a grinding machine; and continuously rolling the billet by a rolling mill group, after heating the continuous billet to a higher temperature by an induction heater. A hot saw cutting type continuous rolling apparatus is provided for performing the above-described method.
Claims5
A hot saw cutting type continuous rolling method comprising the steps of:
- casting two strand billets continously;
- cutting the billets to predetermined length by hot saws;
- directly feeding billet portions obtained by cutting to a billet rolling line through means of a line connecting device;
- continously welding and joining the billets portions by a flash butt welder to form a continuous billet;
- grinding and removing burrs at the welded billet portion by a grinding machine;
- heating the continuous billet to a higher temperature by an induction heater;
- and
- continuously rolling the billet by a rolling mill group.
A hot saw cutting type continuous rolling apparatus comprising:
- a continuous casting machine for casting two strand billets;
- traveling-type hot saws disposed on their respective casting lines;
- a line connecting device including means for alternately performing transverse feeding of billet portions obtained by cutting, disposed between the casting lines and a rolling line;
- a traveling-type flash butt welder for continuously welding and joining the billet portions to form a continuous billet, disposed at a downstream side of the line connecting device;
- a traveling-type grinding machine for removing burrs at the welded portion of the continuous billet, disposed at a downstream side of the traveling-type flash butt welder;
- an induction heater for heating the continuous billet to a higher temperature, disposed at a downstream side of the traveling-type grinding machine;
- and
- a rolling mill group for rolling the continuous billet which was heated to said higher temperature.
A hot saw cutting type continuous rolling apparatus comprising:
- a continuous casting machine for casting two strand billets;
- traveling-type hot saws disposed on their respective casting lines;
- a line connecting device including means which rotates by a predetermined angle for alternately performing transverse feeding of billet portions obtained by cutting, disposed between the casting lines and a rolling line;
- a traveling-type flash butt welder for continuously welding and joining the billet portions to form a continuous billet, disposed at a downstream side of the line connecting device;
- a traveling-type grinding machine for removing burrs at the welded portion of the continuous billet, disposed at a downstream side of the traveling-type flash butt welder;
- an induction heater for heating the continuous billet to a higher temperature, disposed at a downstream side of the traveling-type grinding machine;
- and
- a rolling mill group for rolling the continuous billet which was heated to said higher temperature.
Dependencies are inferred from the claim text.