Abstract: In a continuous annealing process, the annealing furnace is comprised of two adjacent chambers, one for heating and the other for cooling with a door therebetween. The strip coil to be annealed is brought into the heating chamber, such as by a vehicle on a rail, the heating chamber closed, and the coil heated. After heating, the interconnecting door is opened and the heated coil is moved into the cooling chamber by the vehicle, the cooling chamber is closed and the coil is cooled. Concurrently, the next charge of coil is moved into the heating chamber and heated. Since heat from the previous cycle is still in the heating chamber, the amount of heat required for the next cycle is less and heating efficiency is substantially increased. Also, no movement of other equipment is necessary since only a horizontally movable vehicle is necessary to move the coil from one chamber to the next.

Abstract: In a continuous annealing process, the annealing furnace is comprised of two adjacent chambers, one for heating and the other for cooling with a door therebetween. The strip coil to be annealed is brought into the heating chamber, such as by a vehicle on a rail, the heating chamber closed, and the coil heated. After heating, the interconnecting door is opened and the heat coil is moved into the cooling chamber by the vehicle, the cooling chamber is closed and the coil is cooled. Concurrently, the next charge of coil is moved into the heating chamber and heated. Since heat from the previous cycle is still in the heating chamber, the amount of heat required for the next cycle is less and heating efficiency is substantially increased. Also, no movement of other equipment is necessary since only a horizontally movable vehicle is necessary to move the coil from one chamber to the next.

Abstract: The present invention discloses a full-automatic flash welding apparatus wherein the trailing edge of the preceding strip and the leading edge of the succeeding strip are automatically accurately positioned, rigidly clamped and simultaneously cut off, the new trailing and leading edges are automatically machined and then butt welded, and thereafter the flash on the upper and lower surfaces of the joined strips is automatically removed.

Abstract: A butt welding device wherein the trailing edge of a first or preceding strip and the leading edge of a second or succeeding strip are clamped in position, simultaneously cut off, and joined together by flash butt welding and thereafter the flash and upset are removed by machining.