Method and device for dynamically supplying coolant to a cooling device for cooling metal strip or other rolled stock
A technology for cooling equipment and metal strips, applied in metal processing equipment, workpiece cooling devices, metal rolling, etc., can solve the problems of quality loss, difficulty in realization, and damage to the cooling system in rolling strip sections, and achieve improved adjustability, Improving reaction time and reducing the effect of pressure shocks
Inactive Publication Date: 2015-07-08
SMS GRP GMBH
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Problems solved by technology
However this is difficult to achieve due to the huge volume of water used
In particular, the switching-on and switching-off processes cannot be carried out satisfactorily quickly with most existing configurations including regulating valves, so that the switching-on process of the cooling often takes more than 10 seconds to achieve the desired cooling rate
However, because in many cases the rolling stock moves through the equipment at a speed of several meters per second, a large strip length is not cooled at the desired cooling rate, resulting in a loss of mass in this strip section
[0004] A further disadvantage is the high forces acting on the piping system or the cooling device during switching of the cooling
Especially during the rapid switching process of the cooling water supply, there is a risk of strong pressure shocks damaging the cooling system
Such pressure peaks can even lead to failure of the cooling system and thus of the entire rolling mill
Method used
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[0030] For a better understanding first refer to figure 1 Shown prior art. Depicted in the figure is the overhead storage tank 4 used as a coolant reservoir. The coolant can usually be delivered to the distributor 6 or distribution pipe 6 via lines. From a distributor 6 coolant can be delivered to a plurality of spray beams 1 . Here, the spray beams 1 each comprise a plurality of outlets 7 for applying coolant to the metal strip. As shown, a measuring sensor 15 (eg for detecting the coolant pressure or coolant volume flow), a control valve 9 or a shut-off cock 8 can be arranged between the distributor 6 and the corresponding injection beam 1 . Through these elements, the flow of coolant directed into the respective spray beam 1 can be monitored and regulated.
[0031] figure 2 A schematic diagram of an embodiment according to the invention is shown. with according to figure 1 Similar to the prior art, the coolant is provided through the reservoir 4 . And according to ...
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The present invention relates to a method for dynamically supplying coolant to a cooling device, in particular at least one spray bar, for cooling metal strip or other rolled stock. According to the method, a pre-accelerated stream of coolant is provided, which passes by the cooling device (1) and is fed into a return (3). Furthermore, the presence and / or the temperature of a metal strip or other rolled stock to be cooled is monitored and, depending on the presence and / or the temperature of the metal strip or the other rolled stock, the stream of coolant is diverted to the cooling device (1), wherein, instead of passing by the cooling device (1) and being fed into a return (3), the stream of coolant is fed to the cooling device (1) for cooling the metal strip or the other rolled stock. The present invention also comprises a corresponding device for carrying out the method.
Description
technical field [0001] The invention relates to a method and a device for dynamically supplying coolant to a cooling plant for cooling a metal strip or other rolling stock. The cooling device may notably comprise one or more spray beams. Background technique [0002] Various systems are known from the prior art for supplying cooling water from overhead storage tanks for laminar cooling or pressure cooling in hot rolling mills. To cool the hot rolling stock, a considerable amount of cooling water is required in order to sufficiently define and rapidly cool the strip, depending on the requirements of the finished product. The volume of water required to achieve a specified cooling rate often moves on the order of hundreds or even thousands of cubic meters per second. This extremely large quantity of water is conveyed from the overhead storage tank to the spray beam, for example via a line system which can be throttled by a valve. [0003] exist figure 1 Such a system accor...
Claims
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Patent Timeline
Login to View More IPC IPC(8): B21B45/02B08B3/02
CPCB05B13/0207B21B45/0233B21B38/00B05B12/122B21B38/006B21B45/0215C21D1/667B05B12/12B05B1/20B08B3/022B21B45/0218B05B15/58B21B1/22B21B37/74B21B45/02
InventorJ·阿尔肯U·鲍姆加特尔U·克拉默W·富克斯R-F·雅格J·基斯林-罗马纽斯M·克鲁格F·特奥巴尔德
OwnerSMS GRP GMBH