A cold rolling mill is a machine that uses pressure to process metal materials. The cold rolling mill uses a motor to drag the steel bar, and the load-bearing roll and the work roll of the cold rolling mill jointly apply force to the two sides of the steel bar. It is a new type of steel cold rolling processing equipment. The cold rolling mill can achieve the purpose of rolling cold-rolled ribbed steel bars of different diameters by changing the size of the gap between the two rolls.
The cold rolling mill can process hot-rolled wire rods and hot-rolled coils with a diameter of 6.5 mm to 12 mm into cold-rolled ribbed steel bars with a finished diameter of 5 mm to 12 mm. The cold-rolled ribbed steel bar rolled by the cold rolling mill is a replacement product of the cold-drawn low-carbon steel wire in the prestressed concrete member. In the cast-in-place concrete structure, the grade I steel bar can be replaced to save steel. It is one of the better cold-worked steels of the same kind. If speed regulation is not required during the rolling process of the cold rolling mill, an AC motor can be used; if speed regulation is required during the rolling process of the cold rolling mill, a DC motor can be used.
Lubrication of cold rolling mills has three parts:
1. It is the gear lubrication of each gearbox, some have a lubrication system for each main gearbox, and some share a lubrication station for several main gearboxes;
2. It is the lubrication of the bearing, some are grease lubrication, and some are oil and gas lubrication;
3. It is the process lubrication during rolling.
The bearings selected for the special reducer for cold rolling mills are generally selected from FAG. Advantages and characteristics of cold rolling mills: Cold rolling mills are made by cold-drawing and cold-rolling grade I hot-rolled Q235 round steel to produce spiral-shaped steel bars. mechanical equipment. In the process of rolling cold-rolled ribbed steel bars, the cold-rolling mill equipment can simultaneously cold-work the warp and weft directions of the base metal. On the premise of retaining the relative balance and stability of the product in the central area of the original cross-section, it can improve the resistance to position and compression. At the same time, it still retains sufficient elongation properties, so that the geometric parameters of cold-rolled ribbed steel bars (rolling thickness, section width-to-thickness ratio, area reduction and pitch) and four material indicators (tensile strength, conditional yield value) , elongation and cold bending) can be used in important industrial and civil buildings with a safety level, saving steel and reducing building prices. The cold rolling mill is composed of a working structure and a transmission structure. Among them: 1. The working mechanism is composed of frame, roll, roll bearing, roll adjustment mechanism, guide device, rolling seat and other parts. 2. The transmission mechanism is composed of a gear frame, a reducer, a roll, a coupling shaft, a coupling and other parts.
Post time: Mar-11-2022