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Four-high reversing cold rolling mill

Features and applications

1. Suitable for mild steel, stainless steel, and special steel.
2. Transmission method: working rollers transmission and supporting rollers transmission. Control methods: common electric pressing down and hydraulic pressing down through AGC system.
3. Equipped with hydraulic bending working rollers which can fast adjust the gibbous degree of rollers to change the distribution of touching pressure between rollers in order to control the plate form.
4. With simple construction, easily maintenance,and less investment.
5. It is equipped with AGC system to get high precision,which is especially suitable for rolling high precision requirements of cold rolled strips.

Components

Entry tension reel(unloading car) → front device → four-high rolling mill → rear device → exit tension reel(unloading car)etc.Uncoiler and head straightening machine could be equipped as per user’s needs.

Technical parameters

450 rolling machine
φ175
φ450x450
φ140
φ450x450
Input thickness 2.0-3. 1.0-2.0
Product thickness 0.3-1.0 0.2-0.6
Stip width 250-350 250-350
Transmission Working roll support roll
Rolling force 3000 3000
Pressdown method electric hydraulic electric hydraulic
Speed(m/s) 1-3 4-6 1.5-4 4-8

500 rolling machine
φ175
φ500x500
φ140
φ500x500
Input thickness 2.0-3.0 1.0-2.0
Product thickness 0.3-1.0 0.2-0.6
Stip width 300-400 300-400
Transmission Working roll support roll
Rolling force 4000 4000
Pressdown method electric hydraulic electric hydraulic
Speed(m/s) 1-3 4-6 1.5-4 4-8

550 rolling machine
φ180
φ520x550
φ140
φ520x550
Input thickness 2.0-3.0 1.0-2.0
Product thickness 0.3-1.0 0.2-0.6
Stip width 360-450 360-450
Transmission Working roll support roll
Rolling force 5000 5000
Pressdown method electric hydraulic electric hydraulic
Speed(m/s) 1-3 4-6 1.5-4 4-8


650 rolling machine
φ200
φ600x650
φ165
φ600x650
Input thickness 2.0-4.0

1.0-2.5
Product thickness 0.3-1.5 0.2-0.6
Stip width 450-580 450-580
Transmission Working roll support roll
Rolling force 6000 6000
Pressdown method electric hydraulic electric hydraulic
Speed(m/s) 1-3 4-6 1.5-4 4-8

750 rolling machine
φ220
φ650x750
φ175
φ650x750
Input thickness 2.0-4.0 1.5-3.0
Product thickness 2.0-4.0 1.5-3.0
Stip width 550-680 550-680
Transmission Working roll support roll
Rolling force 7000 7000
Pressdown method electric hydraulic electric hydraulic
Speed(m/s) 1-3 4-6 1.5-4 4-8

900 rolling machine
φ230
φ750x900
φ180
φ750x900
Input thickness 2.0-2.75 1.0-2.75
Product thickness 2.0-2.75 1.0-2.75
Stip width 600-800 600-800
Transmission Working roll support roll
Rolling force 8000 8000
Pressdown method electric hydraulic electric hydraulic
Speed(m/s) 1-3 4-6 1.5-4 4-8
prev :HC Six-high cold rolling mill
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