1 A rolling system for producing an angle steel section from a steel strip characterisud by a heating apparatus for heating substantially the entire width of the steel strip while it is running a universal mill and a group of two high mills with grooved rolls that are disposed closely one behind another in a rolling direction wherein said universal mill is composed of a pair of.
The method of producing angles is generally divided into two types the first method is a hot rolling method using a mill having grooved rolls between which a continuous cast bloom is passed the other is a method of producing a light angle from a steel strip by means of a roll forming bending machine while the steel strip is still in hot or cold state.
The term 34steel strip34 is used herein to refer to a narrow bandlike sheet material produced by slitting a wide steel sheet in the longitudinal direction Figure 2 is a view showing a succession of passes pass schedule defined between two rolls for producing an angle by the hot rolling method In the production of the angle a continuous cast bloom billet used as a blank is hot rolled into the angled shape shown in Figure 1 by making seven eight or more passes between seven or eight pairs of grooved rolls.
Figure 3 is a view showing a method of producing an angle from a steel strip via a cold forming process In this method a blank sheet S is worked or processed by bending and hence is not subjected to a reduction in thickness Accordingly the outside radius r 2 of an angled corner portion is about twice the thickness of the blank sheet For example a stainless steel strip of 3 mm in thickness is formed into an angle having a flange thickness of 3 mm a corner portion of the angle has an outside radius r2 of about 6 mm The angle thus produced is not suitable for use in the kitchen.
This means that the use of a steel strip having the same thickness as the flanges of a rolled product is unable to realize rolling of an angle having a desired sharp edge To realize the dFsired rolling a steel strip having a thickness greater than thL hikness of the corner portion should be used.
Rolled material and Figure 4b is a view showing edge waves appearing on the rough rolled material As shown in Figure by using a two high mill the steel strip S indicated by the broken line of a thickness T greater than the thickness B of a corner portion of the angle as in Figure 1 is shaped into the rough rolled material M34 by reducing the thickness of the steel strip S at portions C corresponding to flanges of an angle.
However since the thickness of the steel strip is much smaller than the width when opposite sides of the steel strip being rolled undergo a great reduction in thickness except a portion a central portion for example wave like wrinkles called 34edge waves34 such as shown in Figure 4b are generated due to variations in widthwise elongation or spread of the steel strip The edge waves may still present as wave like deformations on the flanges of a finished angle even when finish rolling is completed As a result the angle is evaluated as a defective product.
LIST OF PARALLEL RATE CONTRACT FOR ITEM Angle Iron Fencing Pole S No Name of Tenderers Valid Up to Rate Contract No 1 Rate ConMs B K Rolling Mills Pvt Ltd H No 5 Sarkari Marg 3 Choubey Colony Raipur C G 17.
Dec 13 2018nbsp018332Angle iron is a common standard structural steel shape Angles are L shaped cross sections made by hot or cold rolling at the mill The most common angle iron used for manufacturing OEM products in the USA is A36 a standard Read more.
HOT ROLLING MILL PLANT FOR ROUND BAR MACHINE 12311 SPECIFICATIONS HOT ROLLING MILL PLANT FOR ROUND BAR Production capacity 45 tonshour 1 BILLET SIZE 160mm x 160mm x 3m 4m Long 6 3quot x 6 3quot x 10 13 Ft 120mm x 120mm x 3m 4m Long 4 7quot x 4 7quot.
The CD quotYour Own Personal Steel Rolling Millquot is a PDF document that contains the following material Twenty four detail and arrangement drawings with notes on these drawings This material is unchanged from the booklet quotSteel Rolling Millquot as in our original review.
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