rolling mills parameters

آخرین محصولات

Metal Shaping: The Impact of Rolling Mills and Rolling …

Implementation of predictive maintenance systems utilizing sensors, data analytics, and machine learning algorithms enables early detection of equipment faults and …

Calculation of stiffness parameters and vibration analysis of …

The elastic deformation of rolling mill elements during the rolling process is important. By knowing the displacement of rolls, the optimum gap between the work rolls can be calculated. In present research, a vibration model with two degrees of freedom is proposed for a cold sheet rolling mill and the stiffness parameters of different mill …

Calculating Power Parameters of Rolling Mill …

The authors assess the feasibility of using the known formulas and analyse the impact of the front and rear tensions on the power parameters of rolling mill. The problem of developing an automatic tension control system for …

Effect of rolling parameters on cold rolling of thin strip …

In some cold rolling mills, a problem has been found that the sides of work rolls touch and deform when thin strip is rolled. The problem of work roll contact at the edges, which forms a new deformation feature in rolling, is analysed. ... In this paper, the authors focus on the research of the effects of rolling parameters on specific force ...

Rolling force prediction in cold rolling process based on …

The rolling force mathematical model determines the quality of the cold-rolled products and parameter preset accuracy. The front slip and rolling moment models are based on the rolling force model, which is also the basis for calculating other mill setting parameters such as roll slits. Figure 4 shows the deformation zone of the cold-rolled ...

Statistical Dynamics of the Rolling Mills

Uncertainty of technology and equipment parameters is particular for the rolling mills dynamics. Contact friction produces a wide band stochastic impacts which cause chatter vibration in the ...

Products | POMINI Long Rolling Mills

Solutions to improve productivity, product range, energy consumption and other key parameters Service Spare parts, maintenance services and small upgrade packages After-sale support provided to operators of lines supplied by …

Calculating Power Parameters of Rolling Mill

Digital models for pressure-based metal treatment are also necessary for calculating the rolling-mill power parameters during the development of new assortments at the operating mills. The models of deformation zones present the basis for developing the multivariable control systems of process conditions of continuous mills. This research is ...

Rolling Process: Definition, Working, Rolling Mills, …

Rolling is a metal forming process in which the deformation takes place under the application of Compressive forces between the rollers. In this …

The influence of rolling mill process parameters on roll …

This study analyzes the impact of operational parameters of hot rolling mill in the degradation process of a roll surface by thermal fatigue. A methodology was developed to determine a coefficient that could identify when operational parameters become crucial to initiate this degradation process. This new coefficient, named the …

(PDF) A Review on Productivity and Quality Improvement …

TABLE 1 TYPICAL PARAMETERS AT ROLLING STAGES Temperature Unit Roughing Deg C 1000-1100 Intermediate Finishing 950-1050 850-950 range Speed range m/sec 0.1-1 1-10 10-120 Inter-stand time Milli- 1600- 1000-1300 5-60 range second 10300 Strain rate range per 0.90-10 10-130 190-2000 second The ultimate dimensional quality of the …

Stability analysis of rolling mill system for flexible rolling …

The joint influence of mechanical, process and product parameters on rolling mill systems is emphasized. • The effect of system parameters on rolling mill stability was elucidated. • A two-parameter dynamics approach was applied to reveal the dynamical stability in a multiparameter coupled state. •

Numerical Simulation and Parameter Design of Strip Cold Rolling …

With the rapid development of rail vehicles, 301L strip has become the main material of the rail vehicles, and its flatness quality has got much attention. Meanwhile, 20-roll mill becomes the most important cold rolling equipment for 301L strip forming, because of its high precision and wide application. To study the flatness control theory of …

(PDF) A Review on Productivity and Quality Improvement through

PDF | On May 4, 2018, Amit Bankar and others published A Review on Productivity and Quality Improvement through Optimization of Input Parameters in the Indian Rolling Mills | Find, read and cite ...

Modeling and Optimization of Process Parameters during

SAE 1541 grade steel bars are widely used in automobile sector, mining, shipping and forging industry due to their affordability and adaptability. Steel industries have been striving for productivity and better yield of hot-rolled bar products. The roll separating force, driving torque, end crop length and drive energy are the important response …

Fundamentals of Roll Cooling and Control of Flatness at …

In the process of Rolling the most significant aspect is the generation of heat through friction and deformation in the roll bite and in a typical Cold Tandem Mill, work roll temperatures normally fall in the range of 55oC – 70oC with strip recoil temperatures and inter-stand strip temperature rarely exceeding 160 oC depending on product.

Online Parameter Estimation for Adaptive Feedforward Control …

Abstract. A new adaptive disturbance feedforward control strategy of the strip thickness in a hot strip rolling mill with online parameter estimation is proposed. The feedforward control strategy makes use of the measured strip temperature and strip entry thickness. To avoid that these disturbances cause a nonuniform strip exit thickness, the …

Rolling Mills: 6 Different Types of Rolling Mills [Images & PDF]

Why Roll at High Temperatures? To lower the strength of a metal and improve its plasticity so that significant thickness reductions can occur. To achieve the proper starting point …

Understanding Rolling Process in Long Product Rolling Mill

Rolling – The important parameters for rolling in the roughing, intermediate, and finishing group of stands in the rolling mill are temperature, percentage of reduction in area, inter-pass time and strain rate. ... A wire rod rolling mill, for example, gradually reduces the cross-sectional area of a starting billet (e.g., 150 mm square, 10 …

Rolling Mills Selection Guide: Types, Features, Applications

Other parameters include maximum separation force at 1000 feet per minute (fpm), total column area, and estimated floor space. Rolling mills include both small, manually …

Dynamics and stability analysis of rolling mill system

Sun et al. [21] investigated the stability of the rolling mill system when subjected to roll system crossover and inter-roll eccentricity. They analyzed the impact of various …

Virtual commissioning and process parameter …

rolling mill is the mismatch between the equipment and pro-cess parameters. By analyzing the interaction between pro-cess parameter uctuations and the operational state of the rolling mill, a relationship model between the operational state of the rolling mill and the rolling process parameters is established.

Hot Rolling

The production hall for the rolling mill was assumed to cover an area of 73.5 m 2 and the volume of the administrative building to be 40 m 3. The service life of the buildings was 50 years. The rolling mill is made of 57.7 t non-alloyed and low-alloyed steel and stands on a concrete foundation having the same mass. The operating life of the ...

(PDF) The influence of rolling mill process parameters on roll …

Maintenance for productivity Rolling models

Roll gap model Mill model Tension practices Model parameters Set-up values Adaption parameters Measured values Thickness, 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 …

(PDF) Bayes for rolling mills: From parameter estimation to …

4.2 Parameter estimation Considering a rolling mill, parameter estimation serves mainly to model-based thickness controller. After structure estimation of the process model for the particular mill, initial values of parameter estimates and their admissible ranges had to be stated. Flat prior pdfs with the mean in the middle of the range proved ...

Productivity Optimization of Cold Rolling Mills

The rolling speed at which the productivity is maximum is conventionally called the critical rolling speed v cr.The value of v cr depends on the coefficients c 1 –c 7, which are determined by the parameters of each group of mills (thickness and width of rolled products, roll change rates, rolling cycle components, etc.).The study of the …

Flat Rolling Fundamentals

The authors present different types of rolling mills and the defining physical analytical parameters.They also discuss the effects of hot rolling on steel and the role of lubrication and thermomechanical treatments to minimize these effects. This book presents qualitative and quantitative advances in cost-effective steel production.

Design and optimization of rolling mills pass based on …

The rolling mills are designed by using the parameter combination and the actual rolling test is carried out on the LG30 type. The test parameters are kept the same as those of the simulation. Multiple sections on the production tube are obtained to measure and calculate the outer diameter precision and wall thickness precision of each section.

Characteristic recognition of chatter mark vibration in a …

Detecting chatter mark vibration in rolling mills operating under normal working conditions is difficult. A novel characteristic recogni-tion method of chatter mark vibration, where the non-dimensional parameters are calculated with time varying signals and kurtosis under normal rolling mill operating conditions, is presented in this paper.

محصول