90m Rolling Mill HJ-FMG9004

• Customization: Available
• Rolling Shape: Ribbon, Bar, Pipe, Wire
• Product: Profile, Rolling Beam, Steel Billet, Steel Sheet/Coil ,Wire Rod ,Deformed Steel Bar
• Model NO.: HJ-FMG9004
• Roller Number: Two or Four High
• Layout: Top Crossed 45 Degree
• Type: Hot or Cold Rolling Mill
• Material Specification: Dia 16-20mm
• Material Temperature: 850*C Degree Celsius
• Produce Specification: Dia 5.5-16mm
• The Kinds of Rolling Steel: Carbon Steel, Low Alloy Steel, High Alloy Steel,
• Speed of The Exit of Tenth Frame: 75 M/S
• The Form of Mill: Cantilever Roller Loop Mill
• DC Motor Working Speed: 900~1100 R/Min
• Transport Package: Seaworthy Packing or as Customers′request
• Specification: ISO9001, SGS, BV
• Trademark: Hangji
• Origin: Shaanxi, China
• HS Code: 8455213000
• Production Capacity: 30 Sets/Month

Product Description

The purpose of the equipment
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 Φ17 ~ Φ21mm of rolling, rolling become Φ5.5 ~ Φ16mm finished wire. The working speed of 90m/s is insured. The specification of end product is Æ5.5mm. 



Structural characteristics of finishing mill

1. 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 Æ200mills and seven Æ150 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.
2. Roll frame is composed of roller box, bevel gearbox and spare parts of bevel gearbox.
3. 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.
4. 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.
5. 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.
6. 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.
7. 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.
8. The adjustment of roll gap is to rotate feed screw with left and right thread and nut. When the two eccentric rotated relatively, the distance of two rollers changed with the symmetrical eccentric relative movement of eccentric locking collar, so the location of former roller line and guide can be maintain.
9. 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.

Equipment performance
parameters

Material specification	Φ16~20mm
Material temperature	>850ºC
Produce specification	Φ5.5~16mm
The kinds of rolling steel	Carbon steel, low alloy steel, high alloy steel, high-quality carbon structural steel
Speed of the exit of tenth frame	75m/s

 Equipment performance
The form of mill: Cantilever roller loop mill
The quantity of frame: ten (first~fifth frame are Φ200 mill,sixth~tenth frame are Φ150mill)
Design method:  top crossed 45°, ten frames concentrated transmission.
Size of roll loop:   Φ200 mill:(Φ210.5--Φ189.5)×Φ120.65×72mm
Φ150 mill:(Φ158.8-Φ142.9)×Φ87.76×62mm
Strength of rolling:     Φ200 mill:152kN
Φ150mill:107.8kN
Space of rolling:  Φ200 mill:2.86kNm
Φ150 mill:1.61kNm
Transmission motor:  DC motor
                  Power: 1600kW×three or 4500 kW AC inverter motor
                   Rotating speed: 1000~1300 r/min
                   Working rotary speed: 900~1100r/min
The speed ratio of mill group:

The number of frame	Total speed ratio
No1  Φ200 mill	1.01206818
No2  Φ200 mill	0.80487113
No3  Φ200 mill	0.66878989
No4  Φ150 mill	0.40239947
No5  Φ150 mill	0.32262096
No6  Φ150  mill	0.25726428
No7  Φ150 mill	0.20520449
No8  Φ150 mill	0.16346826
No9  Φ150 mill	0.13058466
No10 Φ150 mill	0.10499989

Lubrication: thin oil concentration lubricated
            System oil pressure: 0.35~0.6MPa
            Consumption: 1500L/min
            Oil: Mobil 525
 Cleanliness: 10m
           Cooling for roll: 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: Φ200 mill(three),Φ150mill(seven), guild fittings, speed increasing box, support base, flap, waterproof slot, buffer tank, the protective cover, couplings and pipework of finishing mill.