Tenova I2S Model ZR22BE-52 20 High Sendzimir Rolling Mill (14686)
Max coil width: 1250mm
Material: stainless steel, Titanium alloy, etc
Machine was made in 2011, which looks quite new.
ZR22BE-52 SENDZIMIR REVERSING COLD ROLLING MILL
STOCK # 14686

Max coil width: 1250mm
Material: stainless steel, Titanium alloy, etc
Machine was made in 2011, which looks quite new.

I2S USA (Model ZR22BE-52) 20-High Sendzimir Reversing Rolling Mill Introduction
Overview
The I2S 20-high reversing rolling mill is designed for cold rolling of
stainless steel, with an annual production capacity of 100,000–150,000 tons
per year per mill. The mill is supplied as a complete package by I2S USA,
covering both mechanical and electrical/control systems. Its function
is to reduce the thickness of annealed and pickled strip, while producing
a smooth, bright surface finish and good flatness.

The ZR22BE-52 mill is a specific design from Sendzimir Design Company.
It is based on the optimized roll system of the ZR22B mill, with a
specific increase in roll gap opening capability, which led to the new
designation. This improvement is achieved by increasing the piston stroke
of the upper and lower hydraulic cylinders and allowing additional eccentric
rotation of the B&C and F&G backup roll assemblies. The roll gap opening of
the ZR22BE is increased by approximately 4mm compared to the ZR22B. The ZR22BE
also offers a larger roll gap opening than the ZR21B mill.

The ZR22BE-52 mill is equipped with the following functions: hydraulic roll
gap adjustment, crown adjustment, rolling line height adjustment, side eccentric
adjustment, intermediate roll shifting, and automatic gauge control (AGC) and
automatic flatness control (AFC).

I. I2S (ZR22BE-52) Mill Equipment Capacity Parameters
Parameter Specification
Strip thickness Min. finished thickness 0.2mm / Max. entry thickness 6.0mm
Strip width 800–1300mm
Coil diameter Mandrel Φ610mm (with sleeve Φ830mm) – Φ2200mm
Max. coil weight 25t (including sleeve/interleaving paper)
Tension 300kN (at 800m/min) – 500kN (at 480m/min)
Max. rolling speed 800m/min
Max. rolling force 9000kN
Main drive motor 4000kW
Uncoiler/recoiler motors 4000kW
Cooling system Oil cooling type; strip cooling spray 9000L/min;
bearing cooling 3000L/min
Filtration capacity 15800L/min
Oil mist system 130000m³/h
II. I2S (ZR22BE-52) Mill Main Equipment Components
1) Coil Storage Saddles
Located in front of the recoilers, symmetrically arranged about the
mandrel centerline at three equally spaced positions for coil storage.
Additionally, a semi-automatic strapping machine is installed at the
center of the No. 2 saddle to apply radial strapping to finished coils.

2) Coil Transfer Car
The function of the coil transfer car is to transport coils from the saddles
to the recoiler mandrel, or to remove finished coils from the recoiler mandrel
and deliver them to the saddles. The coil transfer car can also deliver sleeves
to the mandrel or remove sleeves from the mandrel.

3) Recoilers (Coilers)
Located on both sides of the mill housing and integrally connected to the mill base. They are of cantilever design with a movable outer support arm. After the coil is loaded onto the mandrel, the outer support arm closes to provide rigid support. The mandrel has an inverted four-pyramid wedge block design, which together with four segmented expansion plates forms a complete solid cylinder. Hydraulic cylinders at the center of the mandrel control the expansion/contraction of the segments to grip the coil. The recoilers maintain constant tension during rolling for unwinding or rewinding. Max. unwinding/rewinding speed: 800m/min; max. unwinding/rewinding tension: 500kN; mandrel expanded standard diameter: Φ607mm.

4) Mill Platforms and Ancillary Equipment
Located on both sides of the mill housing and rigidly bolted to the housing.
The platforms are equipped with wipers (scraper rolls), shear,
thickness gauges (X-ray or isotope type), tensiometers, pinch rolls,
and deflector rolls.

5) Mill Housing
The mill housing is of one-piece cast steel construction, annealed and
stress-relieved, and precision-machined to ensure accurate fit of the
backup bearing assemblies. The design feature is that under load, housing
deflection is uniformly distributed across the housing width, achieved by
thick side sections and tapered top and bottom structures. This configuration
is easy to manufacture (as most surfaces are either vertical or horizontal)
and provides excellent rigidity.

ZR22BE-52 (I2S) type, 20-high monolithic mill housing.
Max. rolling speed: 800m/min; threading speed: 30m/min;
max. rolling force: 9000kN (rated 8000kN); full dynamic all-hydraulic
screwdown system; screwdown control accuracy: ±0.001mm;
control response time:

This machine is listed for sale by Machinery International Corp located in Woodbridge, Connecticut