The Hot Rolling Process The primary function of the Hot Strip Mill is to reheat semi-finished steel slabs of steel nearly to their melting point, then roll them thinner and longer through 12 successive rolling mill stands driven by motors totaling 77,000 hp,
In rolling mills, intermediate steel products are given their final shape and dimension in a series of shaping and finishing operations. Most of the slabs are heated in reheating furnaces and rolled into final shape in hot– or cold–rolling or finishing mills.
Rolling mill roll the hot rolling produces thinner cross sections than cold rolling processes with the same number of stages. Hot rolling will reduce the average grain size of a metal, while maintaining an equipped micro structure.
Cold Rolling CSI’s cold reduction mill is a series of five rolling mills, or ‘stands’; hence the name “5-Stand”. ... A ‘Shape meter’ roll between the last stand and the tension reel measures the tension in the strip across its ... transportation to the next production unit, or onto a coil handling system for transportation to the ...
HOT STRIP MILL — HIGHEST PERFORMANCE FOR NEW AND EXISTING STEEL MILLS The demand for hot rolled strip is growing in multiple ways. ... Looper Shape Meter (LSM) ... APFC controls the entire length of strip profile and shape in the hot rolling finishing mill by means of high-precision setup functions and dynamic control (dynamic profile setup ...
Shape rolling design. Rolling mills are often divided into roughing, intermediate and finishing rolling cages. During shape rolling, an initial billet (round or square) with edge of diameter typically ranging between 100–140 mm is continuously deformed to produce a certain finished product with smaller cross section dimension and geometry ...
Laser Systems for Automation and Quality Control in Steel Mills. LAP Croptimizer Dimension-measurement and Crop Shears ... and cold rolling mills. The system provides: – Width and shape (sables, necking) – Over-all length – Flatness, waviness – Crop shape at front and rear ... analogue meter on the right bottom of the screen displays the
The rolling mill shown can be converted to a powered machine by mounting an electric motor into the base and constructing an appropriate power train for it. A variation on a rolling mill called a beading machine is used by sheet metal workers to form sheet stock.
The shape meter has good performance and stability, which can effectively avoid the scratch of steel strip surface, accurately detect real online strip shape and provide accurate online shape datum for shape control system.
The flatness is defined in I-units One I-unit corresponds to a difference in length of 10 µm per meter of strip length. The levelness describes the topography of the strip surface, i.e. the deviations in height observed when the strip lies on a level surface.
Mitsubishi Heavy Industries Technical Review Vol. 51 No. 3 (September 2014) 27 ... marketing contact type inline strip shape meters for hot rolling in order to enable continuous ... mills. The inline strip shape meter is designed to accurately measure the shape of a strip, even under a harsh, hot, humid and dusty environment. This shape meter ...
The shape meter has been test chronically on the 1250 mm cold strip mill of Angang Steel Company Limited and the test result indicates that the measuring signal is stable and reliable and the closed-loop control of shape is implemented.
In the case of reversing mills, the Shapemeter rolls are mounted on the left and right sides of the mill, so flatness readings are available when rolling in either direction. To keep the cost reasonable and to avoid complications caused by slip rings, etc., each sensor is a stationary load cell.
A reversing mill is a two-high rolling mill in which the direction of rotation of the rolls can be reversed to allow the work to pass through from either side (SI units) A 30-mm-thick plate made of low carbon steel is to be reduced to 25 mm in one pass in a
The production of seamless forged rings is often performed by a process called ring rolling on rolling mills. These mills vary in size to produce forged rings with outside diameters of just a few inches to over 300 inches and in weights from a single pound up to over 300,000 pounds.
Product description. ANDRITZ Sundwig is an experienced rolling mill manufacturer and has built flatness measurement and flatness control systems under licence from the VDEh-Betriebsforschungsinstitut (BFI) for more than 30 years, registered under the shape…
Keywords— cold rolling, flatness defects, shape defects, stainless steel, wide strips I. ... hot rolling mill. Usually the widest material should be rolled first. Fig 12. ... expansion of steel is roughly 1 mm per meter per temperature rise of 100°C. Thus, for a roll diameter of 200 mm, a ...
Home / what is i unit of shape meter rolling mill what is i unit of shape meter rolling mill Simply complete the form below, click submit, you will get the price list and a GBMachine representative will contact you within one business day.
Continuous Rolling Mill Ask Price Mandrel Bars for seamless tube production We are also one of the leading suppliers of Mandrel Bars to the Seamless Steel Pipe producers like ISMT, Jindal SAW, Maharashtra Seamless & BHEL.
Rolling of Metals • Rolling –reducing the thickness or changing the cross- ... •Where F is in Newtons, L is in meters, and N is rpm of roll •Power per roll (English units) ... •Bloom may next go to shape rolling •Slabs may be rolled into plates and sheet .
Some other processes that use rolls are ring rolling, thread rolling, gear rolling, roll piercing, and roll forging. Besides flat rolling and shape rolling, identify some additional bulk forming processes that use rolls to effect the deformation.
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