Plate temperature control method for high temperature rolling in single-stand rolling mill
A control method and single-stand technology, which is applied in the field of plate temperature control of high-temperature rolling in a single-stand rolling mill, to ensure stable production operation, meet production process control, and improve product quality.
Active Publication Date: 2016-03-30
BAOSHAN IRON & STEEL CO LTD
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Problems solved by technology
[0006] The purpose of the present invention is to solve the above-mentioned deficiencies in the temperature control of the strip steel plate used in the high-temperature rolling of the existing single-stand rolling mill, thereby providing an innovative method for controlling the plate temperature of the high-temperature rolling of the single-stand rolling mill
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[0021] The steps, working principles and essential features of the method for controlling sheet temperature for high-temperature rolling in a single-stand rolling mill of the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments.
[0022] In general, the present invention is used to control the sheet temperature when a single-stand rolling mill conducts high-temperature rolling of strip steel, wherein the single-stand rolling mill is provided with a cooling pipe, and the cooling pipe is on the strip steel inlet side and the single-stand rolling mill. There is a nozzle on the outlet side of the strip (such as figure 1 As shown, when the rolling direction is from left to right, the positions 1 and 2 are the inlet side nozzles, and the positions 3 and 4 are the outlet side nozzles), and the emulsion can be sprayed through the nozzles to cool the strip. The invention mainly increases the cooling of the outlet ...
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The invention discloses a method for controlling the temperature of steel plates of high-temperature rolling of a rolling mill with a single rack. The method includes the following four steps. S100: during the milling course, when the head of strip steel reaches the spraying position of strip steel entrance side spray openings, the entrance side spraying openings are opened, the strip steel is sprayed with emulsion, and the spraying flow of the entrance side spraying openings is in direct proportion to the milling speed. S200: when the head of strip steel reaches the spraying position of strip steel exit side spraying openings , the exit side spraying openings are opened, and the head of the strip steel is sprayed with emulsion with the initial flow. S300: the temperature of the head of the strip steel sprayed with emulsion in the step S200 is checked and the actual temperature is obtained. S400: according to the difference value of the actual temperature and the target temperature, compensation flow is calculated with the following formula. With the method for controlling the temperature of steel plates of high-temperature rolling of a rolling mill with a single rack, the temperature of steel plates of strip steel at the exit can be accurately controlled.
Description
technical field [0001] The present invention relates to temperature control in strip steel rolling, and more particularly, to a plate temperature control method for high-temperature rolling in a single-stand rolling mill. Background technique [0002] Single-stand rolling mills (including 4-high, 6-high, and 20-high layouts) are especially suitable for high-strength, ultra-thin strips due to their high stand rigidity, small minimum rollable thickness, and strong shape control capabilities. It can be used in the field of high-grade steel such as special steel, stainless steel and silicon steel. [0003] A cooling pipeline is arranged in the single-stand rolling mill, which is used for cooling the strip by spraying the emulsion. In order to meet the rolling process requirements of different steel grades, the single-stand rolling mill includes two emulsion spray modes, low temperature rolling and high temperature rolling. Among them, the high temperature rolling adopts the me...
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IPC IPC(8): B21B37/74
Inventor 周桂岭张军沈明华朱华群徐坡宿德军李勇林润杰王红兵沈志萍洪昌君玉林峰杨华国
Owner BAOSHAN IRON & STEEL CO LTD