USED ​​ROLLING MILL DATA

The power of the USED ROLLING MILL installed is equal to 5000 KW divided as follows:

Engine stand 1 2500 KW
Engine stand 2 2500 KW
Right reel 1660 KW
Left reel 1660 KW
Pay-off 505 KW

It is a 43" train capable, therefore, to process strips with maximum widths of 1100 mm, with the use of working cylinders having a maximum and minimum diameter of 280 mm and 250 mm respectively, intermediate cylinders of 470 mm and 430 mm respectively and support cylinders of 1150 mm respectively mm and 1050 mm.
Its main characteristics are:

Roll data USED ROLLING MILL
Maximum roll weight 23.8 tons.
Minimum roll weight 4.1 tons.
Maximum weight per millimeter 22.3 Kg / mm.
Minimum weight per millimeter 3.9 Kg / mm.
Maximum external diameter of the roll 2000 mm.
Minimum external diameter of the roll 1000 mm.
Internal diameter of the roll entering the line 610 mm.
Internal diameter of the roll exiting the line on the right reel 508 mm.
Internal diameter of the roll exiting the line on the left reel 610 mm.
Maximum workable roll width 1070 mm.
Minimum workable roll width 900 mm.
Minimum tape thickness at line input 1.5 mm.
Maximum line input tape thickness 3.5 mm.
Minimum tandem output tape thickness 0.30 mm.
Maximum tandem output tape thickness 2.5 mm.

Maximum speed on the 1st step 300 m.
/ min. Maximum train speed 1000 m.

/ min. Maximum head advancement speed 30 m.
/ min. Jog speed entry section 30 m.
/ min. Acceleration deceleration speed 1 m.
/ sec2 Stop speed 1.5 m.

/ sec2 Maximum working cylinder diameter 280 mm.
Minimum working cylinder diameter 250 mm.
Maximum diameter of intermediate cylinders 470 mm.

Maximum diameter of intermediate cylinders 430 mm.
Maximum support cylinder diameter 1150 mm.
Minimum diameter of support cylinders 1050 mm.

User
Power
No. of turns

Cage
reduction ratio 5,000
680
1:1
Pay-off
505
1427
1.7.42
reel
1660
1341
1:2.14
Left reel
1660
1341
1:2.14

INLET SECTION

The inlet section is made up of:
cradle transports rolls
rollers rotation
pay-off reel
snabber roll
leveler
centerer overtaking
table jogger
The

entry section OF THE USED ROLLING MILL has the task of preparing the incoming roll untied and conditioned with an accumulation quantity suitable to guarantee subsequent processing.




After having untied it from the binding straps, the rolls must be compacted on the provided saddles and prepared to be sent to the machine. The preparation consists of a light calendering which is performed on the pay-off reel through the invitation tables and the dedicated snubber roller.
The centering device is an electronic unit which hydraulically controls the position of the pay-off to keep the axis of the roll centered with the axis of the machine.
It is composed of a light source and cameras that follow the tape indicating its position. A system for measuring the external diameter of the roll guarantees the calculation of the existing coils on the pay-off to slow down at the end of the roll.
The leveling machine has the task of straightening the tail of the roll, from the calendering assumed by the unwinding carried out on the pay-off to allow its subsequent introduction onto the right reel of the machine and therefore the subsequent passes.





ROLLING CAGE

The cage section is c