The cold rolling mill uses a motor to drag the steel bar, and the bearing roller and working roller of the cold rolling mill are used to exert force on both sides of the steel bar. The purpose of rolling cold-rolled ribbed steel bars with different diameters is achieved by changing the gap between the two rollers.
① Load-bearing roller: The load-bearing roller of the cold rolling mill is the roller closest to the stand. This kind of roller plays the role of supporting steel bars in the production of ribbed steel bars, and distributes the gravity of steel bars and the gravity of work rollers evenly on the load-bearing rollers, thus forming ribs on the lower surface of steel bars.
② Work roll: The work roll of the cold rolling mill is on the backup roll farthest from the stand. Therefore, in the production of ribbed steel bars, this kind of roller mainly plays the role of rolling the steel bars lifted by the backup rollers, thus causing ribs on the upper surface of the steel bars.
Maintenance of cold rolling mill;
(1) Check whether the electrical system of the cold rolling mill is normal before each shift starts;
② Check whether the oil level of each oil tank is normal;
(3) Whether the oil injection part is filled with oil;
(4) Whether the master batch feeding is reasonable;
⑤ After checking the above items;
⑥ The electrical part of the cold rolling mill should always clean up dust and sundries;
⑦ Always check whether the fastening of moving parts is loose and reasonable.
⑧ In the production process, the cold rolling mill shall not be used beyond the scope, so as not to damage some mechanical parts of the cold rolling mill, and the rolling shall be carried out according to the rolling standard, so as to ensure the safe use of the cold rolling mill equipment and the qualified products.
Cold rolling mill is a new type of cold rolling equipment for steel bars. This machine can process hot-rolled wire rods and coils with diameters ranging from 6.5 mm to 12 mm into cold-rolled ribbed steel bars with finished product specifications ranging from 5 mm to12 mm. The cold-rolled ribbed steel bars rolled by cold-rolled mills are the updated products of cold-drawn low-carbon steel wires in prestressed concrete members, and can replace grade I steel bars to save steel in cast-in-place concrete structures, which is a better one among similar cold-worked steel products. If there is no need for speed regulation in the rolling process of cold rolling mill, AC motor can be used; If speed regulation is needed in the rolling process of cold rolling mill, DC motor can be used.