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Hydraulic Power Unit Cold Roll Mill Gap Control

US3427839A - Hydraulic adjusting means for rolling mills ...

US3427839A US3427839DA US3427839A US 3427839 A US3427839 A US 3427839A US 3427839D A US3427839D A US 3427839DA US 3427839 A US3427839 A US 3427839A Authority US United States Prior art keywords pressure rolling control adjusting chock Prior art date Legal status (The legal status is an assumption and is not a legal conclusion.

Hot & Cold Rolling Mill Equipment Manufacturers | Mill ...

Typical upgrades to hot mill stands include the addition of roll bending for profile and shape control as well as the installation of hydraulic roll force systems for automatic gauge control. Customers are also looking to see production improvements by eliminating mill down time through shorter roll changes.

Chinese rolling mill for extra high grade aluminium strip

qing 2 cold rolling mill in China at the end of November, 1992. The order for ... control loops for hydraulic screw-down takes place over a high-speed bus link. The high-performance communication ... curately reproduces the roll-gap con-ditions . The feedforward precontroller pro-vides a setpoint correction signal every

laing Mill. - Group

controlled via the integrated control panel and thus reducing maintenance time. Accessories and options. – Roll-grinding unit OLFS – Roll removal device – Motor control cabinet – Central hydraulic unit – Bearing temperature monitoring – Vibration monitoring Roll quality and maintenance. Rolls are the centerpiece of a flaking mill.

PID neural network control of hydraulic roll gap control ...

The HGC system of 1676 mm tandem cold rolling mill from Bensteel cold rolling plant was studied, and the executing mechanism model of HGC system including hydraulic systems was built.

INDAR - Reversing Cold Strip Rolling Mill ARANIA - Euba ...

their associated thyristor converter units, digitally controlled. The automation system consists of a master control system for the mill setup, speed and torque setpoint generation, emergency strategy and auxiliary system control. Additionally, the AGC con-trol system is in charge of the Hydraulic Gap Control (HGC) and the thickness control.

Hägglunds Drive Systems - Bosch Rexroth Hägglunds Products ...

Powerful simplicity A Hägglunds direct drive system comprises a hydraulic motor and a flexibly placed drive unit, overseen by a control and monitoring system. This simple configuration withstands the challenges of virtually any application or From the bitter cold of Siberia to the blistering heat of Africa, Hägglunds direct drive systems withstand the challenges of any environment and any ...

4 High Reversing Cold Rolling Mill LUSOSIDER Paio Pires ...

units of production by the installation of latest generation visualization and control systems. The modifications carried out by Ingeteam Power Technology, S.A. include: Quarto Mill Nr. 1 - Speed master control - Automatic thickness control AGC - Hydraulic gap control HGC - Operation and visualization systems and data logger - Fault system ...

Solving Hydraulic System Overheating Problems

The hydraulic system was comprised of a diesel-hydraulic power unit, which was being used to power a pipe-cutting saw. The saw was designed for sub-sea use and was connected to the hydraulic power unit on the surface via a 710-foot umbilical. The operating requirements for …

About Jindal Steel & Power Ltd

The levelling force and the roll gap setting through hydraulic gauge control are calculated based on the strength, thickness, temperature etc. A plastification ratio of up to 80% can be offered depending on the tensile strength and thickness. The unit has automatic gauge control and shape system to ensure a high level of flatness. Residual

THE MECHANICS OF TENSION CONTROL

core diameter and 35 inch outside roll diameter, if taper tension was set to 50%, the tension will be linearly decreased from 3.5 inch core to 35 inch roll diameter so the tension will be half at the outside of the roll compared to the core. How do tension controls work? A word about the term drive

Strip Thickness Control of Cold Rolling Mill with Roll ...

the roll gap, or the roll bite) between the work rolls. In this region the metal is plastically deformed, and there is slipping between the strip and the work roll surface. The necessary compression force is applied by hydraulic rams, or in many older mills by a screw arrangement driven by an electric motor [6]. Figure 1.

Hot Rolling Mill Hydraulic Gap Control (HGC) thickness ...

HGC (Hydraulic Gap Control) cylinder. The AGC system provides the reference value for the HGC positioning system. Figure 1 Schematic structure of a hot rolling mill The thickness of the rolled material is measured by an X-Ray thickness gauge in the last pass. This measurement is possible within several meters distance from the

Used Hydraulic Presses for Sale • Reconditioned Hydraulic ...

24″ Daylight, 31″ X 22″ Bed (RL X FB), Denison Multipress Abex Low Profile & Small Footprint Press. Gap Frame Presses for Sale. Used Denison Multipress Hydraulic Press. Machine #5222. Jackson, MI Cooper Building. Sale Price: $19,500.

Betenbender — Red River Machinery Inc.-Air Compressors ...

1/8" (10 GA) Hydraulic Shears. A precision cut doesn't happen by chance. It takes a shear that can make a razor-sharp cut time after time. Betenbender overdriven and underdriven Hydraulic Shears are designed to do exactly that. Betenbender designs simplicity and safety into its shears-with an advanced hydraulic system, and flexible operation.

Automatic Gauge Control in Rolling Process Based on ...

Automatic rolling process is a high-speed system which always requires high-speed control and communication capabilities. Meanwhile, it is also a typical complex electromechanical system; distributed control has become the mainstream of computer control system for rolling mill. Generally, the control system adopts the 2-level control structure—basic automation (Level …

ABB in Metals Mycron Steel cold rolling mill Complete ...

ABB also replaced Mycron Steel’s force motor valve for cold rolling mill roll gap control with the latest servo valve system. Continuing production with an obsolete automation and drive system is done with great risk of component failure. In this project, ABB made a complete review of the system in

Continuous bloom caster supplied by Primetals Technologies ...

The continuous bloom caster is equipped with the DynaFlex hydraulic mold oscillator and LevCon mold level control. The combination of the Dynacs 3D secondary cooling system and the fully automated DynaGap 3D roll-gap control with Dynamic Soft Reduction in the strand-guiding system ensures blooms are cast with consistently high quality.

Three Roll Mills - Three Roll Mill Manufacturer from ...

The dispersion of medium to high viscous millbase can be achieved by our fully hydraulic Three roll mill. The shearing force created between the array of horizontally mounted counter rotating rolls helps in dispersion of the millbase like inks, industrial & decorative paints, artists' colours, chocolate, foodstuff, cosmetic products, etc.

Symptoms of Common Hydraulic Problems and Their Root Causes

The consequences of cavitation in a hydraulic system can be serious. Cavitation causes metal erosion, which damages hydraulic components and contaminates the fluid. In extreme cases, cavitation can cause mechanical failure of system components. While cavitation can occur just about anywhere within a hydraulic circuit, it commonly occurs at the ...

Plate Leveler | Steel Plantech

Quality Enhancement The SuPerLeveler™ utilizes the “dynamic crowning method” to control roll gap deviation throughout the entire steel plate, something that was not possible with conventional “preset levelers” (a method in which the amount of lateral deflection is set in accordance with the anticipated amount immediately before straightening begins).

Two-Roll Rubber Mixing Mill Selection Questionnaire

Two-Roll Rubber Mixing Mill Selection Questionnaire 1. www.rubbermachineryworld Two-Roll Mill Selection Questionnaire Page 1 of 4 QUESTIONNAIRE FOR 2-ROLL MILL REQUIREMENT Criterion Please Answer Descriptively if needed Production Requirement: _____ Tons/Hour ; _____ of 8 hour Shifts/Day What is your expectation from this Mill?

Gear unit Manufacturers & Suppliers, China gear unit ...

Cold Room , PU Sandwich Insulation Panels ... Vertical Mill Spare Parts , Cement Equipment Spare Part , Cement Machinery , Gear Box , Gear Unit: Mgmt. Certification: ISO 9001 ... 101s Series Hydraulic Power Steering Control Unit for Lift Trucks.

Press Transfer Lines - Pressmach: machines for forming ...

The mechanical arm is mainly composed of three parts: the gripper, the movement mechanism and the control system. The gripper is used to grip the workpiece (or tool). There are various structural forms of gripper according to the shape, size, weight, material and operation requirements of the object to be grasped, such as clamping type, holding ...

Rolling (metalworking) - Wikipedia

Rolling visualization. In metalworking, rolling is a metal forming process in which metal stock is passed through one or more pairs of rolls to reduce the thickness, to make the thickness uniform, and/or to impart a desired mechanical property. The concept is similar to the rolling of dough.

Dynamic modelling and simulation of a hot strip finishing mill

The backup roll supports the work roll to mitigate the deflection caused by the deformation force. Each stand has its own drive unit, the main drive, to power the work rolls. The distance between the work rolls, or the roll gap, is adjusted by positioning the backup rolls either by conventional electric screws or faster hydraulic actuators.

METALS HEAVY-PLATE LEVELER - ANDRITZ

A complex and delicate hydraulic control system is necessary to stabilize the adjusting process in the event of load changes. ... with a power take-off gear where all the shafts oper-ate at the same speed. This generates high stress in ... the features of a precision leveler for cold-rolled strip with those of a heavy-plate leveler: • High ...

How it works - Hydraulic Press Manufacturers and Hydraulic ...

Swaging machine works by using two as well as four split dies, which separate and close up to several times a minute. This action is achieved by mounting the dies into the machine's spindle, which is rotated by a motor. The spindle is mounted inside a cage containing rollers. The rollers are larger than the cage.

Rolling Mill Stand Controller – TelePro, Inc.

Automatic Gauge Control in Rolling Process Based on Multiple Smith ...

Arrangement for adjusting the roll gap in rolling mill ...

The roll gap can also be preadjusted with the power-assisted valve 14 through roll gap measuring units. The hydraulic adjusting arrangement according to the present invention can be used in all types of known rolling mill stands. The adjusting cylinders 2, 2' can …

Tao Liu 1, a,b * Dan Yan 2,c and Gang Chen 3,a,b

valve to control the piston displacement, pushing the upper support roll and the upper work roll up and down, eventually control the export thickness of strip[1]. Fig.1. The strip cold rolling system For the rolling mill with certain stiffness, the spring equation can be expressed as follows model[7]: M P ht S 0 = + (1) Where P is the rolling ...

Hydraulic gap control of rolling mill based on self-tuning ...

2.2 Mathematical model. The control block of the HGC system can be seen in Fig. 4, where r denotes the HGC reference and x p denotes the actuator piston position.. The operation principle of a valve-controlled hydraulic cylinder is shown in Fig. 5, where p 0 and p s is the return pressure and supply pressure, respectively. A 1 and A 2 are the areas of the cavity and the rod cavity ...

Example hydraulic maintenance schedule - daily, weekly, annual

Example hydraulic maintenance schedule - daily, weekly, annual. The need for hydraulic preventive maintenance is determined over time by operating conditions of the various hydraulic components. For example, a service interval of 10,000 hours (about 14 months) is generally recommended for piston pumps. The following schedules are intended as ...

Bharaj Machinery: Heavy Duty Rubber Mixing Mill With ...

Variable friction & variable ratio machine with hydraulic nip gap adjustment. Hydraulic nip gap adjustment equipped with peripherally drilled rolls variable friction & variable ratio. Fully automatic rubber mixing mill. Power saving machines, helps by saving 20 to 30% electricity.

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