No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
No. 1688, Gaoke East Road, Pudong new district, Shanghai, China.
Rolling Mill Sensors Tension Measuring Systems. The dependability and the accuracy of the TWS Tensiometer is a requirement in the heavy applications and harsh environment of the rolling mills. Full systems engineering applications are included with all TWS sys-tems. The system consists of high performance strain gage load cells constructed to ...
Tension. The tension applied to the strip also influences the rolling pressures developed within the bite. Higher entry tension lowers the starting point on the friction hill and so needs to be taken into account in the rolling model. Further learning. In summary, the calculation of rolling force is a complex and multi-disciplinary calculation.
KELK Offers a Complete Line of Tension Measuring Equipment to Suit All Roll Mill Applications. KELK tensiometers measure strip tension by sensing components of forces exerted on a dynamically balanced. sensing roll over which the strip is …
4 High Aluminium Cold Rolling Mill Tension Leveling Line. More rolling mills introduction We have rich experiences in metal coil cold rolling mill design and manufacture, cold rolling mill is for reducing metal coil plate thickness by cold …
Installation Of loopers in modern steel mill ensures tension free rolling mill bars which in turns decrease miss rolls and enhances production capacity. Loopers works with Automatic Sensor called LOOP SCANNER. It is an electronic device …
2 = Rewind tension V 2 = Rewind velocity Where: T 1 = Tension in the previous tension zone V 1 = Nip roll velocity E = Elasticity of the material A = Cross sectional area of the material The larger the elasticity (E), the less likely the material is to stretch. For most values of EA, use TORQUE CONTROL For stretchy material, where E is small ...
The inter-stand tension inferential control systems are used to stabilize the rolling motor torque. To stabilize the motor torque the electric drive system with the …
Tension Leveller Cold Rolling Mill Plant. Roller Leveller Cold Rolling Mill Plant. Scale Breaker Cold Rolling Mill Plant. Thin Gauge Leveller Cold Rolling Mill Plant. Pay Off Reel & Tension Reel Cold Rolling Mill Plant. Side Trimmer Cold Rolling Mill Plant. Multi Leveller Cold Rolling Mill Plant.
–Rolling at elevated temperatures to lower the strength of the material –Apply longitudinal tension to the strip during rolling –back tension on the pay-off reel or front tension on the take-up reel • Grind rolls with a camber to prevent crowning of the rolled strip • Radius of maximum camber point generally 0.25 mm
around the tension reel, specified reduction is carried out in the mill, and tension between the mill and each reel is establis hed; after that, rolling of the second pass is started. After this, rolling is repeated several times until reaching the thickness of product. There are cases in which a product is finished through odd-numbered
Flat Rolling Analysis Results – without front and back tension p p µp µp σ σ x x + dσ x Stresses on Slab in Entry Zone Stresses on Slab in Exit Zone p p µp µp σ σ x x + dσ x Using slab analysis we can derive roll pressure distributions for the entry and exit zones as: h 0 and h b are the same thing 2tan1 ff RR H hh − φ = ()0 0 2 ...
On the modern bar and wire mills inter-stand tension is controlled at rolling [1, 2]. For a variety of reasons, it is impossible to use tension direct control systems that is why tension value is ...
COLD ROLLING MILLS: STRIP TENSION. High consistency in rolling mill operation requires a high accuracy in tension measurement. The BLH Nobel strip tension systems for rolling mills measures the actual resultant strip tension force, as opposed to measuring the indirect force given by the electrical drives current, increasing measuring accuracy and reactivity.
Abstract A mathematical model of a strip-looper system of a hot strip tandem rolling mill is developed using Hamilton's principle and the Galerkin weighted residual method. Several nonlinearities are considered and the effects of bending and dynamic forces on the accuracy of the model are studied. Based on the model, an estimator for the strip tension is proposed.
5. Cluster Rolling Mills: In this type of rolling mill, there are two basic roles that are backed up by two or more rolls which are bigger than those two basic rolls. These backed up rolls give more pressure to the basic rolls to heavily press the strip.
tension, speed Roll force, torque, temperature CVC, HS, position bending Coil-data Operator-trims Scheduling 400 350 300 250 200 150 100 50 0 0 0.5 1 1.5 2 Log deformation Yield stress 3542 Rolling mill applications covered by ABB include: Single and multistand Mills Cluster and Sendzimir*) Mills Inline and continuous rolling mills Reversing ...
Abstract The inter-stand tension inferential control systems are used to stabilize the rolling motor torque. To stabilize the motor torque the electric drive system with the properties of the rolling motor torque supply may also be used. An alternate option may include torque stabilization by to the effect on speed of the previous, further or controlled mill stand.
The inter-stand tension inferential control systems are used to stabilize the rolling motor torque. To stabilize the motor torque the electric drive system with the properties of the rolling motor ...
and mass flow in hot rolling mills can be satisfied by proper control of the strip tension and looper angle. Figure 1 shows the tension and looper control in a typical finishing mill. Traditionally, looper angle control has been per-formed by changing the rotating speed of a main motor but there has been no tension feedback
If the mill rolls 800,000 tons per year, it runs at an average production rate of 114.16 tons/hour. If the utilization can be improved by 1 %, the available rolling hours is 365 x 24 x 0.81 = 7096.6, creating 87.6 extra rolling hours. At 114.16 tons/hour that …
An observer-based multivariable tension control, was developed to improve tension control accuracy at strip threading time and applied to aluminium hot rolling mills. The approach used control pairings such that the changing rolling speed of the upper stand controls strip tension while torque of a hydraulic looper controls looper angle; this ...
hot rolling mills. We thus consider tandem rolling mills equipped with loopers in this paper. Due to their easy setup, PI force controllers are still the most prevalent controllers for the position of looper rolls (Choi et al., 2007b). More advanced control systems use tension meters (Zhao et al., 2008) to measure the current strip tension.
Keywords: Nonlinear systems, Impedance control, Distributed parameter system, Hamilton's principle, Steel industry, Tandem rolling mill, Looper control, Strip tension control. 1. INTRODUCTION In the metals industry, tandem hot strip rolling mills are used for rolling out thick semi-finished products, e. g., slabs, to thinner flat products.
Find top tension levelling line manufacturers of India and get the best quote online. Browse list of tension leveling line manufacturers and contact directly. ... exporters and suppliers of precision engineered machines and equipment including Rolling Mills, Processing Lines, and other Miscellaneous Machines. Made from superior quality raw ...
KELK Strain Extensometers. Extensometers are simple, economical sensors attached to rolling mill housings to measure the strain in the housing posts resulting from roll force. Roll force can be derived from these measurements, but due to outside influences, these calculated results can never be as accurate as direct load cell force measurement.
Tension levellers are used after a rolling mill to correct some of the off-flatness caused by the rolling process. Mills may have flatness control systems to help mill operators minimise sheet defects from the rolling process, but some …
Turnkey Solutions for Steel Rolling Mills. Tension Leveling Lines . Tension Leveling Lines Next >> Product Description: Our company was established as a private limited company, suppliers and exporters of optimum quality Tension Leveling Lines. Manufactured under the supervision of expert professionals using cutting-edge technology, these ...
In a metal rolling process, rolls, stands, bearings, housing, motors, and other mechanical equipment are all a necessary part of the manufacturing operation. The place where all the equipment for metal rolling manufacture is …
