Pre-Finishing Mill Unit

Equipment composition and use: Pre-finishing mill type: cantilever mill,rack number: 4 stands. Horizontal mill (2 stands), Vertical Looper (3 sets), vertical mill (2 stands), safety cover. Layout and Transmission mode: H-V-H-V, (DC) motor individual drives.
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Product Description

Pre-Finishing Mill Unit Equipment Composition and Use

Pre-finishing mill type: cantilever mill, rack number: 4 stands.

Horizontal mill (2 stands), Vertical Looper (3 sets), vertical mill (2 stands), safety cover.

Layout and Transmission mode: H-V-H-V, (DC) motor individual drives.

Pre-Finishing Mill Unit Main technical performance parameters of the equipment

1. Process parameters

(1) The specification of the entry rolling piece of the first stand: 28～31mm

Specification of the fourth outlet rolling stock: 16～20mm

(2) Rolled steel types: plain carbon steel, high-quality carbon steel, low alloy steel, welding rod steel, riveting steel

(3) Rolling temperature: 900～1050℃

(4) Maximum rolling force: ~240kN

(5) Maximum rolling torque: ~6.2kN·m

(6) Roller center distance: 255mm～291mm

(7) Roll gap adjustment: 18 mm

(8) Working pressure of roller installation: 40MPa

(9) Working pressure of unloading roll: 60MPa

(10) Roll cooling water

Consumption: 4x20 t/h Water pressure: 0.6MPa Water inlet temperature: <30℃

(11) Lubrication method

The rolling mill and reducer are all lubricated with thin oil.

Oil pressure: Lubrication point pressure 0.15~0.25MPa Total consumption: 400 l/min

Oil quality: Mobil 533

Fine filter: 25μ
The transmission parameter table of pre-finishing mill
 
Machine type Size
stands Tungsten carbide roll ring size Фmm Max. rolling forceKN Max. Rolling torque KN.M Rolling speed m/s Trimmed size Фmm Speed ratio Motor
4stands type Power KW Revolving speed r/min
90m 135m/sФ285 H cantilever roller ring structure unit 1HФ285 285/255×95 280 7.4 8 8 1.5 DC 450/600 600/1200
2VФ285 285/255×95 133.6 5.0 8 8 1.24 DC 450/600 600/1200
3HФ285 285/255×95 153 4.2 8 8 1.15 DC 450/600 600/1200
4VФ285 285/255×95 95.9 3 40 30 94 DC 450/600 600/1200