The closed porous groove two-high mill is the most common form of small rolling mill. In recent years, when designing this kind of rolling mill, the reduction device is often placed between the upper beam and the upper bearing seat of the rolling mill archway, which not only maintains the integrity of the archway, but also increases the thickness of the rolling mill, and adopts hydraulic balance and manual control of the upper roller. The worm gear structure carries out axial adjustment technology of the upper roller, as well as the technology of hydraulic trolley roll change and rolling mill lateral movement, so that the rolling line is fixed and unchanged. Its porous grooved roll can reduce the number of roll changes, thereby reducing the loss of roll change time. The closed two-high rolling mill is a reliable rough rolling and intermediate rolling mill, and most conventional finishing rolling mills also use this type of machine. In recent years, single-hole groove closed rolling mills have appeared in the world, that is, the roll adopts a short roll body, and a roll ring is assembled on the roll shaft. Only one rolling groove is carved on the roll ring, and the roll ring material is centrifugally cast with high strength and wear resistance. Ductile iron. Compared with ordinary closed two-high rolling mills, this kind of rolling mill is lighter in weight, almost half lighter; due to the use of single-hole grooves, the rolling line is constant and no pass centering device is needed; the roll body is short and double-supported. The rolling mill has high vacuum lens holde and can withstand high rolling force; the equipment takes up little space and is simple to operate; such as vertical roller mill, its structure is simple and lightweight.
Link to this article：Features of closed rolling mill
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