Used 1250mm 6hi reverse cold rolling mill in Shanghai, China

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Used 1250 6hi reverse cold rolling mill in Shanghai, China

Product NO.657 written on Feb 12, 2026

Main Technical Parameters

1. Product Process Technical Parameters

1) Raw Material State: Hot-rolled steel coils that have been pickled and trimmed.

2) Raw Material Material: Ordinary carbon steel, high-quality carbon steel, low-alloy high-quality steel, silicon steel (SI ≤ 2.5%)

Representing steel grades: CQ, DQ, DDQ,

Non-oriented silicon steel grade: Medium grade 50W470 ～ 50W600

Low grade 50W700 ～ 50W1300;

3) Thickness: 2.0～3.0 mm (silicon steel)

2.0～5.5 mm (low carbon steel)

4) Width: 900～1300 mm

5) Coil ID: φ610 mm

6) Coil OD: φ1000～φ2100 mm

7) Max coil weight: 25 t

8) Unit coil weight: Max 22.4 Kg/mm

Average roll weight: Max18Kg/mm

10) Steel coil tower shape: ≤40mm

11) Strip steel convexity: ≤80μm

12) Strip steel cross-section wedge shape: ≤50μm

13) Strip steel surface protrusion points: ≤12μm

14) Scimitar bend: ≤5mm/2000mm

15) Width tolerance: Nominal width 0～+10 mm

2. Finished product requirements:

1) Thickness: 0.35～0.85 (silicon steel)

0.2～4.5 (low carbon steel)

2) Width:900～1300 mm

3) Roll ID: 610 mm Æ

4) Roll OD: φ1000～φ2100 mm

5) Max roll weight: 25 t

6) Finished product accuracy: Finished product thickness ±3%

3. Main equipment technical parameters of the unit

Unit name	1450mm six-roll UCM reversible cold rolling mill
Max rolling pressure	20000 KN
Max rolling torque	155 KN.m, 175 KN.m (motor overload 115%)
Max rolling speed	1000 m/min
Stripping speed	30 m/min
Max unwinding speed	400 m/min
Max rewinding speed	1050 m/min
Unwinding tension	8-80 KN
Winding Tension	8-230 KN
	High Speed Gear: 8-130 KN
	Low Speed Gear: 23-230 KN
Working Roller Size	Φ385/φ340×1450mm
Intermediate Roller Size	Φ440/φ390×1480mm
Support Roller Size	Φ1200/φ1050×1450mm
Rewinder roll diameter (expansion/contraction) and length	Φ630/φ570×1450mm (Nominal 610mm)
Reel diameter (expansion/contraction) and length	Φ610/φ587×1450mm
Frame column cross-section dimensions	760 × 620 mm, 471200mm²
Minimum opening degree	20 mm
Working roller positive/negative bending roller force (single roller single side)	360/-180 KN (Max)
Intermediate roller positive bending roller force (single roller single side)	450 KN (Max)
Middle roller lateral displacement	325 mm(Max)
Low-pressure hydraulic transmission system pressure	14 MPa
Balance bending roller hydraulic system pressure	25 MPa
Servo pressing hydraulic system pressure	25 MPa
Max acceleration and deceleration speed of the unit	60 m/min/sec
Downtime of the unit (from 1000m/min to 0m/min)
Normal Parking	25 seconds
Quick Parking	15 seconds
Emergency Parking	10 seconds

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