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The function of 135m finishing mill group
The finishing mill group is composed of top crossed 45° High-speed wire-rod finishing mills.
The finishing mill group is located in high-speed wire-rod workshop. Through 10 unit rack the continuous micro-tension rolling mill will be transported upstream Æ 17 ~ Æ 21mm of rolling, rolling become Æ 5.5 ~ Æ 16mm finished wire. The working speed of 90m/s is insured. The specification of end product is Æ 5.5mm.
Structural characteristics of finishing mill
Finishing mill unit is combined with ten mills, speed increasing box, support base, arc coupling, waterproof slot, waterproof plate, the protective cover, piping and guide of finishing mill. Mill frame is composed of three Æ 200mills and seven Æ 150 mills, frame use top crossed 45° Composition form to achieve no twisting, no contact axis, little axis and shock for equipment, besides, it decrease the center of gravity height, the stability increased as well, in the mean time, the total weigh has decrease and it is easy to maintain. Ten frames are concentrated transmission.
Roll frame is composed of roller box, bevel gearbox and spare parts of bevel gearbox.
Roller box and bevel gearbox adopt outside combinational instruction, decrease the size of bevel gearbox to decrease the weight of finishing mill, decrease the space of mills to make their structure compact. Roller box used cantilever roll loop, there is eccentric locking collar in the box to adjust roll gap. Film bearing and roll shaft are inside eccentric locking collar, taper sleeve is used to fix roll loop which is in the end of roll shaft.
Bevel gearbox is composed of box, transmission box, spiral bevel gear roll and synchronized gears. All gears are hardened grinding gear, geartooth correction is needed. The accuracy level of spiral bevel gearbox is six and round bevel gearbox is five to insure the smooth working of high speed.
Roller box and bevel gearbox are connected by bolts, a part of roller box plug into the bevel gearbox to let two synchronized gears in bevel gearbox meshed. Roller box and bevel gearbox are fixed by two locating pin, the roller box with same specification can be changed.
The axial force of the roll shaft beared by a pair of thrust ball bearings, this ball bearing mounted on the axial clearance in the absence of the resilient washer, because the very small axial clearance ball itself, therefore the roll shaft to accurately positioned in the axial direction, which ensures accurate roll rolling precision, which is to ensure the dimensional accuracy of the workpiece.
The roller shaft near the film bearing is designed in the form with taper, so the roller shaft can bear uniform load distribution even it is bend. So the lifetime of roller can be improved.
Roller loop is tungsten carbide, it is connected on the cantilever roll shaft, we use the specific hydraulic changing roll equipment to replace roll loop, it is convenient and easy.
Lubrication of the group: Dilute oil concentration lubricated
System oil pressure: 0.35~0.6MPa
Consumption: 1500L/min
Oil: Mobil 525
Cleanliness: 10m
Cooling water of roll shaft
Water pressure: 0.6MPa
Consumption: Maximum is 10´ 30m3/h
Hydraulic pressure system of protective cover:
Working pressure: 20MPa
System flow: 35 l/min
Composition of machine: Æ 200 mills(three), Æ 150mills(seven), guild fittings, speed increasing box, support base, flap, waterproof slot, buffer tank, the protective cover, couplings and pipework of finishing mill.
Xi'an Weikeduo Electrical & Mechanical Equipment Co., Ltd. is a professional manufacturer of high-speed wire-rod, high-speed tray screw steel, hard-faced gearbox and relative homemade spare parts of all kinds. We have been in the line over 22 years and gather lots of technical and production experiences. Depending on the advanced techniques and constantly absorbing the hi-tech of domestic and international markets, we choose high technicians and completely precision equipment from domestic and overseas markets.
With a wide range, good quality, reasonable prices and stylish designs, our products are extensively used in electrical and mechanical industries.
Our company uses the specific manufacture way to achieve the excellent product with the best quality. Our purpose is to satisfy our clients. Our high-quality products have passed ISO9001 certificate and we update our level to international standards. According to GB/T19001, we build the metallurgical high speed finishing wire mill and hard-faced gearboxes quality administrational system.
Our trademark "Hangji" is the famous brand in China. In the meantime, short-stress line bar mil, high-speed wire-rod finishing rolling mill and finishing rolling mill have acquired the national patents.
High-speed wire-rod production lines include heating furnace, roughing finishing rolling mill, middle finishing rolling mill, pre-finishing rolling mill, finishing rolling mill, pinch roll, laying head, picker and other high precision equipment. It is the technology-intensive product that combines modern rolling techniques with machine, electron, hydraumatic, pneumatic and instrument. Only a few countries in the world can offer the complex, high precision and difficult technology.
Our company has built cooperative relationships with SMS Siemag AG, DEMAG and JPMorgan Chase, and digested and absorbed the advanced product manufacture techniques. We integrate the processing, test methods and special manufacture methods to build our own administration system, quality system and techniques system. Our products are widely recognized and trusted by users and can meet continuously developing economic and social needs.
We look forward to cooperate with you.
