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Cambering of four high cold mill with the view of ,per. related technology cant be copied to tandem cold rolling with heavy reduction rate which is aimed at managing complex seas. the patent, entitled back-up not suitable for high cold tandem mill. so, the emphasis of field breakthrough is schematic diagram of back-up roll contour curve.
per. related technology cant be copied to tandem cold rolling with heavy reduction rate which is aimed at managing complex seas. the patent, entitled back-up not suitable for high cold tandem mill. so, the emphasis of field breakthrough is schematic diagram of back-up roll contour curve.
smartcrown work roll contour of a 4-hi tandem back-up rollers for multi-roll cold rolling mills. strip thickness control of cold rolling mill with roll. roll necks due to irregularities in the mill rolls andor roll bearings 11. these irregularities cause cyclic deviations in the strip thickness at the output of a mill
kucsera et al. hot rolling mill hgc thickness control improvement another way to determine the thermal expansion of the work roll is the modelling of
oct 24, 2001 while operating tandem cold rolling mills, it is observed that the products to be rolled and surface conditions of the rolls vary continuously. one has to efficiently calculate and control the various process variables of a tandem cold rolling mill to maintain high levels of product quality and productivity and to minimize the overall rolling cost.
backup rolls and torsion vibration of the drive system are this paper is concerned with chatter in tandem cold rolling mills, which has been recognised to have close relation with friction conditions in roll bites. however, the relation between rolling conditions and the assuming the contour of the roll gap is parabolic and the
related technology cant be copied to tandem cold rolling with heavy reduction rate which is aimed at managing complex seas. the patent, entitled back-up roll configuration curve which cooperate with the working roll configuration curve of continuous variable crown mill, the application number is cn.1 the patent
rolling. rolling mill configuration and four high stand of reversing cold mill are shown in figure and respectively. figure rolling mill configuration types of roll chocks the roll chocks are broadly categorized into types which is shown in fig op back up roll chock top work roll chock bottom work roll chock
the work roll and backup roll were taken as elastic continuous bodies, the effect of shear and moment of inertia were taken into consideration, and then the dynamic model of rolls was built. the two models were coupled together, and the dynamic model of rolling mill was built.
EA EP EP EP 02342 EP 02342 EP EP EP EP authority EP european patent office prior art keywords roll rolls rolling mill rolling crown prior art date legal status (the legal status
coupled pickling line & tandem cold mill high-capacity production of high-quality products for a wide range of products, the required strip thickness, flatness and surface quality can be achieved more economically by linking the pickling and cold-rolling processes.
journal of biomimetics, biomaterials and biomedical engineering materials science. defect and diffusion forum
the hofc work roll curve was designed using matlab. It has great flatness control ability, for the roll diameter in the position of the roll length can be altered with the changing of angle and index parameters. combined with the data from a hot strip factory, the elastic deformation of the hofc work roll was analyzed following the influence coefficient method.
sep 30, 2020 In the rolling process, the job is drawn through a set of rolls due to interface friction, and the compressive forces reduce the thickness of the workpiece or change in its cross-sectional area.. the types of rolls used in rolling mills are depended upon the shape, size and the gap between the rolls and their contour. because of workability and limitations in equipment, rolling is done in the
tandem cold-rolling mill cold-rolling mill slitting line cut-to-length line automatic for perfect cooling and contour control we provide pulse-modulated work roll spray bars. dsr backup roll technology, smartcrown roll technology and 6-high stand design.
2.2 mathematical model. the control block of the hgc system can be seen in fig. where denotes the hgc reference and denotes the actuator piston position.. the operation principle of a valve-controlled hydraulic cylinder is shown in fig. where and is the return pressure and supply pressure, respectively. and are the areas of the cavity and the rod cavity
where is unloaded roll gap; is rolling force; is the mill stiffness or mill modulus.the strip thickness reference has to be created first during the lock-on process by calculating the average values of the actual roll gap and the actual rolling force.
keywords: cold rolling mill, work roll and back-up roll chock, mill housing, modeling introduction rolling mill chocks are the maximum stressed bearing component in a manufactured item, and so are most liable to consistent the financial losses incurred as a result of chock failure will be far greater than the actual value of the chock.
aluminum hot rolling mill high-quality product, maximum yield, superior flexibility primetals technologies provides a full range of aluminum hot rolling mills for both new and revamp projects. with our flexible mill configuration, high-quality strip can be rolled in capacities between 100,000 to 800,000 tonnes per annum.
may 30, 2013 fig roll configurations in rolling mills. two-high mill roll configuration this is the most commonly used rolling mill configuration. In this configuration, there are two horizontally mounted rolls. the rolling mill motor drives either both rolls or only one roll with the top roll rotating due to the friction between the roll and the work piece.
20-high cold rolling mill. feature highlights of the 20-high rolling mill. wide range of thickness and width for different type of steel strips. thickness: 0..2 mm; width: 1250 mm. rolling process brief. the rolling process varies depending on customers requirement for strip thickness.
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