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In order to analyze the effect of entry strip thickness, entry strip crown and intermediate roll shifting on strip profile and rolling force distribution, a three dimension finite element model of rolls-strip in UCM mill was established and employed. The results showed that the increases of entry strip thickness and entry strip crown would lead to the increase of exit strip crown and edge drop ...
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In temper rolling mills there are three common methods/actuators for flatness control, work roll crown, work roll bending and tilting of the roll gap. The most common method is the use of a constant work roll crown, which means that the work roll barrel has "a diameter profile", a …
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Qty. 1 Second-hand cold rolling mill Mfc.: MCC, ABB, IMS Type: 6-Hi Cold Rolling Mill Built: 2009 Stopped: 2017 Annual capacity: 220,000 Ton/Year Annual running time (Hour): 6480 Strip Width: 800~1250 mm Thickness Entry: 1.5~3.5 mm Exit: 0.2 – 1.2 mm De-Coiler OD: 1000~2000 mm De-Coil ID: 610 mm De-Coil Weight: Max. 25 T Coil OD: 1000~2000 mm Coil ID: 610 mm Coil Weight: Max. …
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only under so called "normal rolling conditions" and even these change continuously with progressive wear in the contact zone. Besides "normal rolling conditions" - a stable, theoretical assumption - mills experience many different changes in rolling conditions. After a roll change or a mill stop rolls need some time to return to stable
Jun 10, 2019· Company Profile. Key Features. YS-500Z Z-Purlin sheet metal forming machine made from top grade materials. Contact us to learn more about our other products or to get a custom quote. YS-914 Roof & Wall Cladding Roll Forming Machine is designed for manufacturing the high quality roof & wall cladding. This machine contains our experiences in 40 ...
eter. The rolling force was also measured by the load cell. 3.2. Surface Profile of the Strip The surface profile of the strip that had the chatter mark fVP chatter =× ×1000 60 l /( ), c Fig. 1. Schematic illustration of the 6-high cold rolling mill. Fig. 2. Surface profile of the strip with the chatter mark (a) from
Model: SF-460L. Forming speed: 20 ~ 30 M/min. Advantages. Changing the profile from C to Z (or Z to C) automatically. Changing the width and height through the control screen automatically. Material Thickness Guage (1.5~3.2) self-regulated. Integrate the inline punching device. Flying cut-off to …
From tests on several rolling mills, it has been established that the first intermediate rolls on 20-h mills cannot be shifted faster than 0.5 mm/m of rolled strip. For mills hav-ing larger rolls, it is doubtful if shifting speeds greater than 0.25 mm/m are possible. Thus, when rolling at threading speeds, eg, 20 m/min (65
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Jul 01, 2007· This paper considers some of the control issues in hot rolling mills. Hence to set the context, first we give a brief description of a typical process. The role of a hot strip mill process is to roll the slabs produced in a continuous casting process and produce strips of thickness 0.8–20 mm. Fig. 1 shows a typical layout of a hot strip mill.
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Reversing mills are generally used for smaller scale production of the cold rolled products. 2. COLD ROLLING MILL: The function of rolling mill is to reduce ingoing strip at room temperature by 50 to 90%. The reduction of strip thickness is caused by compressive stresses in contact region between work roll surface and strip.
Mabati Rolling Mills Limited (MRM) is the largest company of the Safal Group, and was its founding operation, starting with the metal coating plant established in Mombasa, Kenya, in 1962. MRM has a metal coating plant in Mariakani, near Mombasa, and a colour coating line in Nairobi, both providing the world class coil from which it manufactures ...
Modeling of thin strip profile during cold rolling on roll crossing and shifting mill . Abstract . Strip profile control in cold rolling of thin strip is a difficult and challenge problem found in industry. Currently using the novel type of strip rolling mill, such as the work roll crossing and shifting is the one of the main methods to control ...
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These mills are appropriate to control the strip shape, profile and flatness when the rolling process is applied to the rolling of thick strip, and the control of the strip shape, profile and flatness no longer present a serious challenge to rolling mill operation for relatively thick products. 11.
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A method is described for determining parameters of a model (13) with which at least one area of a rolling mill can be computationally simulated. The following steps are provided: the model (13) is given initial values for the parameters to be determined, the model (13) is supplied with input variables (EG) determined by measurements within the rolling mill, and at least one model is assigned ...