Cold rolling mill
Cold rolling is the way of rolling production below the recrystallization temperature. In general casting, hot rolling, foil rolling before, is a connecting device; according to the requirements of process and can be divided into cold roughing mill, rolling mill and finishing mill three; according to the operation mode is not reversible and reversible; according to the number of roller can be divided into two rollers, three rollers, four roll and multi roll cold rolling mill, and the current mainstream models for the four roll and six roll rolling mill, the main products of our company are not four roller reversing cold rolling mill.
Four roller cold rolling mill production process: equipment, rolling coil unwinding unit for opening, transported to the host and after rolling, strip tension in rolling process, which mainly include the expansion drum, a movable support, speed reducer, drive roller, harmomegathus cylinder head and transmission parts, the gear box in the control system, which can freely slide coil center and machine center line. Two motors are driven in series, and the mechanical variable gear is adopted to ensure the tension of the strip with different thickness.
Four is the main body of the whole body rolling mill, coil decoiling machine entrance pinch deflector roll, five roll flattening device for conveying to the host by rolling, four rolls and show high hardness of the flat light roller can be rolled flat plate to ensure bright, roll tilting, bending roll, roll segment the plate to ensure the cooling, need, upper and lower supporting roller roller cleaning device and the air roller cleaning device, ensuring the rolling strip clean; arch and lifting high strength pressure sensitive cylinder and high precision displacement sensor and pressure sensor in the thickness control system (AGC), plate system (AFC) under the control of the strip thickness accuracy for rolling out qualified, to provide a reliable guarantee; rolling line adjusting device to maintain constant rolling line, and displayed on the operating table; smoke hood generating device in rolling smoke discharged timely, can bring clean work ring Exit. The main drive system of rolling mill, the high power motor drive and gear reducer with high precision, universal coupling transmission, can provide stable and reliable power supply for the quick change joint roller; roll changing device and universal shaft bracket and roller system is simple and quick, can greatly shorten the downtime of mill roll changing time; X ray mill is located in the export of advanced thickness, can accurately measure the thickness of the strip; disc cutting edge machine can edge online shearing strip, so that the finished sheet edge neat; cut the band edge by coiled or broken edges, ensure the normal hydraulic rolling cut; cut head and tail end of the strip can be cut into strips; the guide device can be rolled out on the coiler mandrel. The middle guide plate and guide roller set in the whole rolling mill can make the rolling mill carry on smoothly.
The coiling unit can roll out the rolled strip and produce the pre tension in the rolling, so that the rolled strip can be tightened and rolled up. It mainly comprises a drum, movable bearing, gear box, push plate, cylinder and a transmission part. The motor is driven in series, and the mechanical variable gear is adopted to meet the tension needs of the strip with different thickness.
When the end of the rolling strip thickness less than 6 mm, can export volume belt device can assist the reel at the beginning of fast and convenient coiling strip into the lateral transport volume; lifting car, transport volume side lifting car set, can make the material convenient transportation, greatly improve the degree of automation rolling mill.
Performance table of cold rolling mill (as of September 2017)