How to classify rolling mills?
According to the purpose: semi-finished mill and finished mill. Semi-finished mills include: various types of rolling mills, billet mills and small and medium-sized mills. Finished mills include section mills, sheet mills, tube mills and special purpose mills. The size of the semi-finished mill and the section mill is usually expressed by the nominal diameter of the rolls, that is, the pitch diameter of the herringbone gear. The size of the steel plate mill is expressed by the length of the roll body and is divided into thick plate, medium plate and thin plate mill according to the thickness of the rolled steel plate. The steel tube mill is generally indicated by the outer diameter of the rolled steel pipe.
According to the layout: there are seven. Single-stand rolling mill, transverse rolling mill, tandem rolling mill, semi-continuous rolling mill, continuous rolling mill, cross-country rolling mill, and cloth rolling mill.
According to the number of rolls: there are five categories. That is, two-roller, three-roller, four-roller, multi-roller, and universal.
What are the main ancillary equipment for rolling mills?
1) The roller table is divided into a work roller and a transport roller. The former is arranged before and after the rolling mill to feed the rolling stock into the rolling mill and the rolling stock is taken out of the rolling mill; the latter refers to between the rolling mills and between the rolling mill and the auxiliary equipment. Rollers, which take on the task of conveying the rolling stock.
2) Lateral moving equipment, used in the rolling mill and the section rolling mill to move the rolling stock laterally when the rolling stock is rolled in different frames and different hole types. Commonly used lateral transfer equipments include push-bed, claw or chain type steel transfer machines, and cross roller conveyors that can be transported longitudinally and laterally.
3) Lifting equipment, used to reverse the rolling stock during the rolling process of the section steel and the roughing mill. Common turning equipment for steel rolling mills include turning doors, turning rolls, turning machines, and the like. The roughing mill achieves turning steel by means of the flip hook on the pusher bed and the movement of the pusher itself.
The auxiliary equipment of the rolling mill is indispensable during the rolling process. The number of auxiliary equipment and the reasonable use of it not only directly affect the production capacity of the rolling mill, but also have an important impact on the working conditions of workers.