Method for preventing vibration of steel bar under high-speed rolling station of ultra-thin plate
A strip steel, high-speed technology, applied in the direction of metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of tension fluctuation, affecting the normal rolling of ultra-thin plates, and vibration of ultra-thin plates, so as to achieve significant rolling and lighten the thickness of ultra-thin plates Vibration and thin strip thickness difference control have remarkable effects
Active Publication Date: 2009-01-14
WISDRI ENG & RES INC LTD
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Problems solved by technology
For ultra-thin plates, the air flow will cause the ultra-thin plates to vibrate, which in turn will cause tension fluctuations, seriously affecting the normal rolling of ultra-thin plates
Method used
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[0015] As shown in Fig. 1, a kind of method that prevents the steel strip from vibrating under the high-speed rolling condition of the thin plate below 0.4mm, in the first stand (being the first stand 1 of the cold tandem rolling train; The rolling mill consists of 5 stands, i.e. the first stand 1, the second stand 2, the third stand 3, the fourth stand 4, and the fifth stand 5). At the entrance, a three-roller stabilizing device 6 is added, and the three-roller Stabilizer 6 comprises left lower roll 20, right lower roll 18 and an upper intermediate roll 19, upper intermediate roll is positioned at left lower roll, right lower roll middle above, and the upper intermediate roll of three-roll stabilizer is positioned at rolling line 21 (i.e. the first Above the strip center line between the first rolling mill 1 and the fifth rolling mill 5), the lower left roll 20 and the lower right roll 18 of the three-roller stabilizing device 6 are positioned under the rolling line 21, and th...
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The invention relates to a method for the vibration of band steel in high-speed rolling process, wherein said method is characterized in that: the first frame inlet of cold rolling machine is arranged with three-roller stabilizer which comprise left low roller, right low roller and upper middle roller; the upper middle roller is above the left and right low rollers, and above the rolling line; the left and right low rollers are under the rolling line; the band steel is through between the upper middle roller and left low roller and right low roller, the upper middle roller is lifted by hydraulic cylinder; when in normal rolling, the upper middle roller compresses the band steel; the last frame outlet of machine has single-roller vibration resistor; when in normal rolling, the vibration-resistant roller extends out driven by the hydraulic cylinder, to tension the bane steel.
Description
technical field [0001] The invention belongs to the field of high-speed rolling of ultra-thin plates, and in particular relates to a method for preventing chattering of strip steel under the working condition of high-speed rolling of ultra-thin plates. technical background [0002] The rolling speed of modern tandem cold rolling mills is generally between 1500m / min and 3000m / min. For tandem cold rolling mills that produce extremely thin plates (thin plates below 0.4mm), in terms of production efficiency, the normal production speed is higher than that of ordinary cold rolling mills. plate. In the process of rolling extremely thin plates, under the action of various disturbance forces, the rolling mill is prone to treble or quintuple frequency flutter, which is transmitted to the connected racks through the tension between the racks, causing system vibration and resulting in strip thickness. Severely out of tolerance or even broken belt, damage equipment. Therefore, stable ...
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IPC IPC(8): B21B39/02B21B39/14B21B1/40B21B28/00
Inventor 丁文红闵威陈行忠
Owner WISDRI ENG & RES INC LTD