(1) rolling mill: its main equipment includes rolling mill work stand, universal joint shaft and balancing device, gear base, the main coupling, reducer, motor coupling and motor and front and rear winder, unwinding machines.
(2) rolling mill lubrication requirements: dry oil lubrication, such as tropical steel rolling mill in the furnace input Kun Tao, pusher, the feeder, Li Kun, base, rolling Kun Tao, mill work Kun, mill pressure By means universal joint shaft and holder, cut the first machine, looper, guides, output Kun Tao, rolled machines, coiling machines, washing machines, turning spindles, shears, disc cutting, crushing machine, chop Board so for oil lubrication; thin oil circulation lubrication, such as Baosteel 2030 five-stand tandem cold rolling mill, for example, strip cooling and lubrication systems, and to the oil emulsion system uncoiler, five machines, feeding Kun, scroll scissors, guide Kun, Kun steering and winder, gear oils, mill and other equipment lubrication, each frame of film bearing systems; high-speed high-precision rolling bearings with oil mist lubrication and oil lubrication.
(3) rolling mill technology commonly used lubricating and cooling medium: In the rolling process, in order to reduce the friction between rolling Kun and rolled, rolling force and reduce power consumption, so easy to extend rolled, controlled rolling temperature, improve Rolled product quality, must be added to the process lubrication cooling medium between the rolling Kun and rolled contact surface.
The basic requirement for lubrication and cooling medium rolling mill process are: appropriate oily; good cooling capacity; good oxidation stability, rust and physical and chemical indicators of stability; good filtration properties; for rolling Kun and products surface with good rinse cleaning action; cold-rolled strip annealing performance good; no damage to human health; accessible oil sources, and low cost.
Rolling mill technology lubrication and cooling medium variety, different needs of different media rolled; here briefly as follows: Rolled aluminum, aluminum foil, with a kerosene additive for cooling and lubricating medium.
Wuhan Iron and Steel 1700 cold rolling mill, rolling emulsion summer 45-50 ℃, winter 50-55 ℃, the mass fraction of 1.2 to 4.5 with the emulsion%, the highest mass fraction of 7%, 30% or more commonly used. Rolled strip higher concentration, rolled thick with concentration lower. The use of emulsified oil inspection once every eight hours PH value, the mass fraction of iron soap indicators, weekly comprehensive laboratory analysis.
2) rolling mill used lubricating oil, grease
(1) rolling mill often selected lubricating oil, grease:
Small power gear reducer: LAN68, L-AN100 total loss system oil or load industrial gear oil; small mill: L-AN100, L-AN150 total loss systems in load industrial gear oil or oil; high loads and harsh Conditions gear, worm, sprocket: in heavy-duty industrial gear oil; mill live transmission gear and pressure device, shearing machine, pushing Beds: rolling oil, medium, heavy-duty industrial gear oil; rolling mill oil film bearing: Film bearing oil; dry oil lubrication system, bearing: No. 1, No. 2 lithium grease or lithium complex grease; heavy machinery, rolling mill: the 3rd, the 4th, the 5th lithium grease or lithium complex grease; dry oil centralized lubrication systems, mill Kun said: calender fat (the 1st for the winter, the 2nd for summer) or extreme pressure lithium grease, the heavy-duty industrial gear oil; dry oil lubrication system, gearbox, coupling 1700 Mill: lead-calcium complex grease, medium and heavy-duty industrial gear oil.
