Tension In general rolling with low tension in roughing mill is a fundamental condition to ensure the stable rolling quality 2 3 This paper proposes the fuzzy control structure for the roughing mill in Slovakia Steel Mills a s Str225ske The given roughing mill consists of six rolling stands STD individually driven by motors. If you are interested in our company's products, we welcome your consultation 7/24 hours, and we are committed to creating the most suitable solution for you.Get Price
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For optimized rolling between stands loopers maintain a loop to ensure that there is no tension in the rolled material We maufacture side loopers Looper and tension control is important in hot strip mills because they affect the strip quality as well as strip threading Loopers are arranged in the finishing mill area for tension free rolling.
Shape control that has a closed loop of a shape roll and a rolling mill as shown in Fig 9 This has enabled high speed and stable rolling without relying on operator skills 3 1 Shape analysis Figure 10 shows the concept of shape analysis The average rolling tension and the tension deviation for each rotor are determined from the load applied to.
Strip Tension Control System Three Stage AGE for Tandem Cold Mill Feed forward AGC for Tandem Cold Mill Flow Stress Feed Forward AGC Width Change and Control in Rolling Mills Main Objectives and Methods of Width Change Width Reduction by Rolling Slab Sizing Mills Width Reduction by Pressing Long tool Sizing Presses.
CISDI is China global engineering service provider We independently developed and realized technical integration of process equipment hydraulic and control system for the most advanced three roll mandrel mill in the world We can also supply automation system integration for mandrel pipe mill Main control models for mandrel pipe mill automation control system include geometrical model.
Rolling mill using different system for tension inferential control The finished studies prove that size alignment is provided with the tension control system affecting speed of the further stands The paper verifies that the characteristics of the rolling mill including aligning ability depend on the rolling speed It is a good practice to.
Tension Measuring Method and the Effect of Tension Control In hot rolling such as that in a hot strip mill a section mill or a bar mill the tandem rolling in which a slab is rolled at the same time by more than two stands is put into operation mainly for the improvement of productivity quality and yield.
Dec 17 2009018332Simulating a Multi Stage Rolling Mill Process Part 3 Tension Control From the series Simulating a Multi Stage Rolling Mill Process Alec Stothert MathWorks This webinar is the third in a three part series that highlights the use of MathWorks products for modeling and control of a multistage rolling mill process In this webinar you will.
This paper focuses on interstand tension control problem in 5 stand tandem cold rolling mills Tension dynamics can be described by a nominal model perturbed by parametric uncertainties.
Sep 01 2016018332Sheet Rolling Mill processes involve progressive thickness reduction of continuous sheet metal in multiple stages Some of the control variables of interest are exit thickness throughput and the tension in the sheet as it passes from one stage to the other.
Including hydraulic screwdowns hydraulic roll bend and tension control This book does not focus on these specific rolling mill manufacturers and their various methods of manufacturing and patentability My intent in this book is to show the modern rolling techniques that.
According to the Hill rolling force formula taking particular account of the influence from horizontal vibration of rolled piece in roll gap a dynamic rolling force model is analyzed Considering the interaction between vibration of strip and roll the dynamic vibration model of rolling mill is established On this basis the time delayed feedback is introduced to control the vibration.
Jun 19 2017018332As the bar progresses through a continuous mill where the bar is rolled in multiple stands simultaneously the stand speed must be controlled to ensure tension free rolling The main methods of controlling the tension in the mill is with a tension free rolling speed control system and manually monitoring the current drawn by each motor as the.
Metal rolling is a large scale complex manufacturing process Tension control in such a process plays an important role for assuring both high product quality and safe process operation Although there have been many looper control technologies developed for finishing rolling processes looperless interstand tension control of roughing and intermediate rolling mills has had much less progress.
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.
Jul 01 2007018332An 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.
Jul 31 1979018332A tension control method for a rolling mill according to claim 3 characterized in that a speed correction quantity of a looper motor at the time when the tension control method with the looper is to be changed over to the looperless tension control method is held whereby said looperless tension control method is changed over to.
In order to solve the above problems a state feedback H control method based on a discrete time model for looper tension control systems in hot rolling mills is presented.
Data collected at the end of a rolling with used rolls will not be accurate when rolling on new rolls Tension control In a continuous mill speed matching the stand to achieve a constant mass flow through the mill assures a low cobble rate and fewer defects.
Dec 29 1981018332Tension control method for a rolling mill 1979 07 31 Morooka et al 728 4033492 NA 1977 07 05 Imai 72205 3848443 AUTOMATIC CONTROL METHOD AND APPARATUS FOR A ROLLING MILL 1974 11 19 Peterson 72205 3399556 Strip tension control for a rolling mill 1968 09 03 Bensema et al 7221 3332263 Computer control system for metals.
Width deviation compensation using tension control is limited to low frequency width deviations By default the strip width in a hot strip mill is deter mined by edging and rolling the strip in the roughing mill The width deviation after the finishing mill arises from the width deviation in front of the finishing mill.
Course Description TelePro periodicallly offers a rolling mill automation technology training program at its offices in St Charles Illinois The program is a detailed treatment of mill automation system design and practical real world implementation issues.