gear coupling GZF200-760. for rolling mills sleeve and shear pin. gear coupling. GZF200-760. Torque: 31,500 Nm - 1,600,000 Nm. Rolling Mill Gear Coupling - GZF TypeModel：GZF200-760Torque range:31500-1600000 N·M. Compare this product Remove from comparison tool.
Get PriceJun 30, 2021· A rolling mill driving system is a multiple degree of a freedom torsional vibration system [].The torsional vibration of a driving system causes the rolling speed to change dynamically, providing instability factors at rolling interface and impacting the strip quality [2, 3].Therefore, it is necessary to explore the torsional vibration caused by the structural problems of the main drive system.
Get PriceThe speed of rollers in large rolling mills is an very important aspect to be measured. In this type of application the rpm of each motor is measured and compared to setpoints. Characteristics such as Speed, Torque, Power, operating voltage and current are important for selection of motors. Power is the capability of the motor to do some work.
Get PriceCharacteristics of DC motors. Generally, three characteristic curves are considered important for DC motors which are, (i) Torque vs. armature current, (ii) Speed vs. armature current and (iii) Speed vs. torque. These are explained below for each type of DC motor. These characteristics are determined by keeping the following two relations in mind.
Get Pricetechnology for rolling mill applications. As a result, TMEIC provides customers with an unparalleled choice of technology, including: 1. Proven AC drive solution for each type of rolling mill application, ranging from large torque, slow-speed roughing mills to the high-speed, wide tension range aluminum foil mills.
Get PriceThe basic structure of a rolling mill is shown in Fig. 1. Due to the operational characteristics of rolling mills, it is not possible to prevent torques that exceed the capacity of the UJ during operation. When the multiple in-take of rolled material happens during rolling operation, an .
Get Pricetechnology for rolling mill applications. As a result, TMEIC provides customers with an unparalleled choice of technology, including: 1. Proven AC drive solution for each type of rolling mill application, ranging from large torque, slow-speed roughing mills to the high-speed, wide tension range aluminum foil mills.
Get PriceOct 16, 2020· Fig 1 Structure of a typical automation system for hot strip mill process. Level 0 – It is the lowest level of control and includes, for example, the control loops for hydraulic capsules used to position the rolls in the rolling mills and for the main electric motors powering the mill.. Level 1 – It is primarily concerned with in-piece control. At this level, the quality parameters such as
Get PriceIt was found that the rolling speed, the nonlinear friction and the thickness of the strip have strong influences on the stability of rolling mill [18-20]. T p, T g are the input torque and the load torque, Liu H. Analysis of vertical-horizontal coupling vibration characteristics of rolling mill rolls based on strip dynamic deformation
Get PriceDec 31, 2015· WANG Q Y, JIANG Z Y, ZHAO J W, et al. Multi-factor coupling system characteristic of the dynamic roll gap in the high-speed rolling mill during the unsteady lubrication process[J]. Tribology International, 2013, 67(11): 174–181.
Get PriceThe mechanical rolling conditions in hot strip mills are precisely defined by various variables, which are taken directly froth the rolling schedule (separation force, torque. speed. strip thickness) or calculated from figures of the rolling schedule and dimensions of the mill (strip reduction, roll diameter etc.).
Get PriceTorque speed characteristics of rolling mills torque–speed characteristics electric equipment speed is defined as how fast the motor performs its work for example a service online torque speed of vertical roller mills rolling mill speed calculation formula pdf calculating roll .
Get PriceThe speed–torque characteristics of the induction motor are quite important in the selection of the induction motor drive. These characteristics can be effectively determined by means of the equivalent circuit of the induction motor. In cases, where the load fluctuates over a given cycle, as in rolling mills, etc., the raise of motor is
Get PriceSpeed – Torque Characteristics (N v/s T) Since a series motor develops high starting torques at low speeds and low torque at high speeds, therefore, speed – torque characteristics of a DC series motor is a hyperbola. High starting torque enables, even a small series motor to start a heavy load. Application of DC Series Motor
Get PriceThe working roll diameter is 500 mm Determine the rolling load on the rolling stand if the coefficient of friction is 007 Also determine the rolling torque Solution: Example 2: A billet of area of section 150 mm x 150 mm is rolled to 120 height in a rolling mill with 600 mm roll diameter at .
Get PriceApr 13, 2021· The inverse relationship between speed and torque means that an increase in the load (torque) on the motor will cause a decrease in speed. This means that the torque-speed curve is a descending line, with a negative slope. The torque-speed curve begins at the crossing of the Y axis, where torque is maximum and speed is zero.
Get PriceThe speed of rollers in large rolling mills is an very important aspect to be measured. In this type of application the rpm of each motor is measured and compared to setpoints. Characteristics such as Speed, Torque, Power, operating voltage and current are important for selection of motors. Power is the capability of the motor to do some work.
Get PriceThe rolling torque calculating section 101 may be arranged to calculate the total torque according to the known rolling theory in the equal peripheral speed rolling operation on the basis of the rolling conditions such as characteristics of rolling mill, the entry and exit thickness of the rolled material, the rolling load, and the hardness of
Get PriceApplications Finishing stand motors for cold rolling mills, coiler motors for cold and hot rolling mills Power rating 0.6 – 3 MW Speed 200 – 1500 rpm Torque < 62 kNm Shaft height 630 – 800 mm Compact rolling-mill drives (medium size) Design IM 1001 Applications Drive for coilers, finishing stands, cold/hot rolling mills Power rating 1.2
Get PriceThe speed reducer plays a role in matching the rotational speed and transmitting torque between the driving link and the working machine or the actuator and is widely used in the rolling mill. The working characteristics of the speed reducer are low speed, heavy load, large impact load, frequent impact times, and continuous operation.
Get Price At zero torque characteristics passes through the point corresponding to ideal no load speed, no as in the case of motoring. From the characteristics curves, it is clear that, higher the armature circuit resistance,the higher is the speed at which the motor has to run for a given brakingvtorque.
Get PriceE l e c t r i c Drives (EEE 522) EIE, CE, C o v e n a n t University, Ota | Adekitan A. 1 4.0 Speed/Torque characteristics of electric drives Dc motors are extensively used in variable speed drives and position control systems where good Dynamic response and performance are most required. Control of dc motors especially the separately excited, is very straight forward.
Get PriceThe working roll diameter is 500 mm. Determine the rolling load on the rolling stand if the co-efficient of friction is 0.07. Also determine the rolling torque. Solution: Example 2: A billet of area of section 150 mm x 150 mm is rolled to 120 height in a rolling mill with 600 .
Get PriceJun 30, 2021· A rolling mill driving system is a multiple degree of a freedom torsional vibration system [].The torsional vibration of a driving system causes the rolling speed to change dynamically, providing instability factors at rolling interface and impacting the strip quality [2, 3].Therefore, it is necessary to explore the torsional vibration caused by the structural problems of the main drive system.
Get PriceThe speed reducer plays a role in matching the rotational speed and transmitting torque between the driving link and the working machine or the actuator and is widely used in the rolling mill. The working characteristics of the speed reducer are low speed, heavy load, large impact load, frequent impact times, and continuous operation.
Get PriceThe mechanical rolling conditions in hot strip mills are precisely defined by various variables, which are taken directly froth the rolling schedule (separation force, torque. speed. strip thickness) or calculated from figures of the rolling schedule and dimensions of the mill (strip reduction, roll diameter etc.).
Get PriceThe speed–torque characteristics of the induction motor are quite important in the selection of the induction motor drive. These characteristics can be effectively determined by means of the equivalent circuit of the induction motor. In cases, where the load fluctuates over a given cycle, as in rolling mills, etc., the raise of motor is
Get PriceApplications Finishing stand motors for cold rolling mills, coiler motors for cold and hot rolling mills Power rating 0.6 – 3 MW Speed 200 – 1500 rpm Torque < 62 kNm Shaft height 630 – 800 mm Compact rolling-mill drives (medium size) Design IM 1001 Applications Drive for coilers, finishing stands, cold/hot rolling mills Power rating 1.2
Get PriceThe speed–torque characteristics of the induction motor are quite important in the selection of the induction motor drive. These characteristics can be effectively determined by means of the equivalent circuit of the induction motor. In cases, where the load fluctuates over a given cycle, as in rolling mills, etc., the raise of motor is
Get PriceJan 06, 2016· A hoisting speed of 0.5 m/s corresponds to a drum speed of 19 rev/min, so a suitable gear ratio would be say 80:1, giving a maximum motor speed of 1520 rev/min. The load torque, as seen at the motor side of the gearbox, will be reduced by a factor of 80, from 2500 to 31 Nm at the motor.
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