Cold Rolling Equipment

Strip Reversing Mill Stand

Five-stand Cold Continuous Rolling Mill Unit

Strip Reversing Mill Stand：

Single-stand reversing cold rolling mill unit is used to process the pickled and trimmed hot-rolled coil of carbon steel with various materials and a thickness of 1.2～6.0mm (under normal temperature) into cold-rolled coils of various specifications with required thickness and surface roughness through several times of rolling. We can reasonably configure the units according to the customer’s demand for finished strip steel.

Basic Configurations of The Unit：

Full-hydraulic AGC computer automatic control system.

A human-machine interface is available for the main operation platform to complete dynamic screen display.

Rolling process parameters setting, fault alarm and printing of reports.

Full digital AC or DC drive of the unit.

Roll section cooling automatic control.

Pre-setting setting and control of working roll positive and negative bending rolls, intermediate roll traverse movement.

Automatic adjustment of strip speed and tension.

Protection of Strip broken, failure warming, accurate stop of working roll, coiler accurate stop of jaw position.

Automatic alignment of uncoiling machine (CPC).

Unit NameTechncial Specification		900 single-stand reversing cold rolling mill unit	1200 single-stand reversing cold rolling mill unit	1250 single-stand reversing cold rolling mill unit	1450 single-stand reversing cold rolling mill unit	1500 single-stand reversing cold rolling mill unit
Form		Single-stand reversing (6-roll)	Single-stand reversing (6-roll)	Single-stand reversing (20-roll)	Single-stand reversing (6-roll)	Single-stand reversing (6-roll)
Nominal capacity		80,000 tons / year	200,000 tons / year	75,000 tons / year	250,000 tons / year	250,000 tons / year
Maximum rolling speed		1200 m/min	1200 m/min	800 m/min	1200 m/min	1200 m/min
Rolled material	Material	Q195-Q345, 08AL, IF	Q195-Q345, 08AL, IF	Carbon structural steel, high quality carbon structural steel, low alloy steel	Low carbon steel, medium carbon steel, low alloy steel, electrical steel	Plain carbon steel, high quality carbon steel, low alloy steel
	Plate thickness (in/out)	1.8-4.0/0.2-1.25mm	1.5-3.0/0.2-0.8mm	0.35-3.1/0.12-1.2mm	1. 5-3/0.35-2.0mm	1. 8-2.0/0.2-0.65mm
	Plate thickness	450-750mm	600-110mm	700-1100mm	900-1300mm	900-1350mm
	Coil weight	8t	20t	20t	25t	25t
Rolling force		9MN	15MN	6MN	18MN	20MN

Five-stand Cold Continuous Rolling Mill Unit：

Five-stand cold continuous rolling mill unit is used to process the pickled and trimmed hot-rolled coil of carbon steel with various materials and a thickness of 1.2～6.0mm (under normal temperature) into cold-rolled coils of various specifications with required thickness and surface roughness through rolling of five stands. We can reasonably configure the units according to the customer’s demand for finished strip steel.

Basic Configurations of The Unit：

Automatic rolling up, threading, drifting and waste cutting and treatment at inlet section of the pickling unit

Automatic laser welding machine is available at inlet section of the pickling line.

Three loops for closed loop drive of wire ropes are available for the unit, and the loop car can walk freely without strip steel.

A two-bend and one-leveling tension leveler is provided at the pickling process section, which is subjected to shallow tank turbulent pickling.

Turret-style disc shear is available at the pickling outlet, and two correction devices are provided at the disc shear inlet to ensure edge cutting accuracy.

The rolling mill is a five-stand full six-roll continuous cold rolling mill, with the function of positive and negative bending roller function with working roll, positive bending roller of intermediate roll, traverse movement of intermediate roll and automatic adjustment of rolling line elevation by wedge, as well as stand drifting rolling and dead zone control of S5 rolling mill working roll bending roller. Automatic control of rolling mill hydraulic roll seam, roll seam presetting, pressing and tilting control, rolling force control, single-side rolling force control, AGC gain adaptation, rolling mill eccentric compensation, acceleration compensation of inlet tension roller, rolling mill stiffness correction and plastic stiffness correction of rolled piece and various compensation function. S1 and S5 stand hydraulic roll seam is provided with the function of feed-forward control and feedback control. The tension roller in front of the stand is controlled as No. 0 stand to adjust S1 mill roll gap.

Carrousel coiler is adopted by the unit.

The rolling mill and coiler are subject to AC centralized transmission. Quick roll change of working roll and intermediate roll.

The back-up roll bearings are lubricated with thin oil, and the working roll and intermediate roll bearings are lubricated with dry oil.

The rolling mill is provided with the functions of broken belt protection, accident alarm and accurate stop of working roll, automatic sleeve mounting and dynamic specification change.

Unit NameTechncial Specification		1250 pickling continuous cold rolling mill unit	1420 pickling continuous cold rolling mill unit	1450 pickling continuous cold rolling mill unit	1550 pickling continuous cold rolling mill unit	1780 pickling continuous cold rolling mill unit
Form		Six-stand continuous rolling	Six-stand continuous rolling	Five-stand continuous rolling	Five-stand continuous rolling	Five-stand continuous rolling
Nominal capacity		870,000 tons / year	1,000,000 tons / year	600,000 tons / year	1,100,000 tons / year	1,500,000 tons / year
Maximum rolling speed		1700 m/min	1700 m/min	400 m/min	1350 m/min	1350 m/min
Rolled material	Material	CQ, DQ, HSS	CQ, DQ, HSS	Stainless steel	Hot-rolled low carbon steel, ultra low carbon steel, etc.	Q195, Q235, 45#
	Plate thickness (in/out)	2.0-4.5/0.18-2.0mm	2.0-4.5/0.18-2.0mm		2. 0-6.0/0.2-2.0mm	2. 0-6.0/0.3-3.0mm
	Plate thickness	700-1100mm	700-1300mm	750-1320mm	750-1430mm	800-1630mm
	Coiler weight	22t	25t	28t	28.6t	30t
Rolling pressure		18MN	20MN	20MN	22MN	25MN

Hot Rolling Equipment

The leader of heavy plate and hot strip mill equipment upgrade

We have a solution design team and a project management team that masters core technology of complete set of technical equipment for hot-rolled strips, and are concentrated on the upgrading and reconstruction of complete set of technical equipment for strips including hot continuous rolling, wide and thick plate and steekle mill. We hold the full-life cycle service concepts of providing complete set of equipment upgrading and reconstruction from traditional spare parts to customized equipment for all customers through integrated solution of process, machine, electricity, liquid as well as advanced and quality services.