1. Lubrication of ironmaking and sintering equipment

Ironmaking and sintering equipment, such as coking machines, pushing coke machines, limestone and ore sintering equipment, large blowers, ore hopper traction steel wire ropes and other furnace top equipment, chemical furnaces, blast furnaces, belt conveyors, etc., are mostly exposed to atmospheric and dust, corrosive smoke and dust environments, and are prone to corrosion, abrasive wear, and cavitation. Lubrication should be applied to the corresponding bearings, gears, worm gears, hydraulic systems, wire ropes, etc. Due to frequent exposure to the air filled with coal powder, coking machinery must be sealed and lubricated, such as the hydraulic systems of furnace door switches, bottom turning carts, and water spray quenching carts. Generally, non combustible hydraulic fluids such as water ethylene glycol should be used; Belt conveyor shafts should be lubricated with lithium based or composite calcium based grease. The coke pusher operates indirectly and is subjected to impact loads, in coal dust and high temperature environments. It is necessary to use extreme pressure lithium grease with good heat and water resistance, or use anti oxygen and anti rust extreme pressure lubricating oil for circulating lubrication. The hydraulic system also needs to use flame-retardant hydraulic fluid. Due to the presence of dust and corrosive smoke, some machinery for gas purification and chemical by-product recovery should use anti oxygen and anti rust turbine oil as lubricants for gas exhaust machines, and a circulating lubrication system with filters should be applied. Limestone and ore sintering equipment often operates under dust, vibration, and high temperature conditions, so composite calcium based, composite lithium based, bentonite, or composite aluminum based lubricating grease should be used. Large blast furnaces, ore hopper traction steel wire ropes, and other top equipment can generally be lubricated using a dry oil lubrication system with No. 0 or No. 1 extreme pressure lithium grease. Top machinery can use phosphate ester refractory liquid as the hydraulic medium. The iron ladle car has a high load and temperature, and needs to be lubricated with extreme pressure lithium grease with a drop point greater than 125 ℃.

2. Lubrication of steelmaking equipment

The operation of modern steelmaking furnaces is controlled by computers, with a high degree of automation. The equipment used requires corresponding lubrication systems and lubricants. In the oxygen converter equipment, the blowing oxygen converter is supported by a limit rotation shaft, and the supporting rolling bearings are lubricated with molybdenum disulfide lithium grease. Static pressure bearings and polytetrachloroethylene oil pads can also be lubricated with grease. Lubrication of industrial gear oil in the drive device of the converter for heavy or heavy-duty loads. There are many lubrication points for the main auxiliary equipment such as exhaust fans, motors, loading cranes, and cranes, which are lubricated with corresponding lubricating grease and dry oil lubrication systems. The driving gears are commonly lubricated with oil bath lubrication. The rolling bearings of the continuous casting machine, including the casting machine turntable, overhead crane, mold swinging device, and ingot taking platform, are generally lubricated with composite aluminum based grease at high temperatures. The lubrication of the mold uses lubricants to prevent mold wear and adhesion. The hydraulic medium for continuous casting is commonly water ethylene glycol or phosphate ester type medium. 3. Oil for metallurgical equipment.

1) Sintering equipment: belt conveyor: 150 industrial gear oil; Disc feeder: 150 industrial gear oil; Elastic slide of sintering machine: No.1 composite aluminum based grease; Bearing of sintering machine smoke exhaust machine: HL32 hydraulic oil; Wheel bearings of sintering machine trolley: composite aluminum base grease; Raw material grab crane: using 150 industrial gear oil; Use No. 2 universal lithium grease for wheel bearings;

2) Ironmaking equipment: blast furnace steam turbine blower: HL32 hydraulic oil; Electric mud cannon machine: 320 industrial gear oil for gear transmission; Da Ni Si Gan and thrust bearings: No. 2 universal lithium grease; Blast furnace feeding winch: 220 industrial gear oil; Steel wire rope for feeding winch: ZM type steel wire rope grease; Concentrated lubrication of the sealing device for the furnace top fabric and the large and small bell pull rods: filtered waste engine oil; Weighing vehicle: running axle pads, using axle oil; Air compressor: No. 100 reciprocating compressor oil 150 industrial gear oil; Centralized lubrication system: No.1 composite aluminum based grease; Hydraulic system: L-HL32 hydraulic oil; Hot air stove: L-CKC100 industrial gear oil is used for various valves, and semi fluid lithium grease is used for all open gears.

3) Steel making equipment: open hearth reversing valve worm gear: 460 industrial gear oil; Rolling bearing of open-pit blower: No. 2 universal lithium grease; Metallurgical cranes (iron tank cranes, ingot casting cranes, and ingot stripping cranes): 320 and 460 industrial gear oils are used for each part, No. 1 composite aluminum based grease is used for the centralized lubrication system, ZM type steel wire rope grease is used for steel wire ropes, semi fluid lithium based grease is used for open gears, and 320 and 460 industrial gear oils are used for worm gears; Mixing iron furnace: use 320 and 460 industrial gear oil, and use No.1 composite aluminum base grease for centralized lubrication system; Raw material cranes (magnetic cranes, grab cranes): use 150 industrial gear oil, use No. 2 universal lithium grease for wheel bearings, and use ZM type steel wire rope grease for steel wire ropes.

4) Rolling equipment: thin oil system on the rolling line: 460 industrial gear oil (medium and heavy load); Concentrated on dry oil lubrication system: No.1 composite aluminum based grease; Main motor bearing thin oil lubrication system: 32, 46 anti-wear hydraulic oil (oil film bearing oil); Open gear: semi fluid lithium grease. Note: Industrial gear oil can use L-CKB, L-CKC type or L-CKC, L-CKD (medium to heavy load) industrial closed gear oil.