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Cooling method of online roller
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A cooling method and roll technology, applied in the direction of roll, metal rolling, metal rolling, etc., can solve the problem that the cooling method cannot meet the requirements of the use of the roll, etc.
Inactive Publication Date: 2015-12-02
铜陵市大成轧辊有限责任公司
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Problems solved by technology
[0002] During the rolling process, the instantaneous temperature of the roll can reach 700-800°C. After a certain period of water cooling, the temperature is 80-100°C. During the rolling process, the strip steel has a certain offset, resulting in the temperature distribution of the roll. At this time, the shape of the roll is changed due to the influence of temperature, so the roll must be cooled to normal temperature before grinding the roll to avoid the influence of the temperature of the roll, and the existing cooling method cannot meet the requirements of the use of the roll Require
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Embodiment 1
[0012] An on-line cooling method for rolls, the weight percentage of roll components is: C: 0.9%, Si: 0.9%, Mn: 0.6%, Cr: 6.8%, Mo: 0.6%, V: 0.2%, Ni: 0.25%% ,P:0.01%,S:0.017%The rest are Fe and impurities,
[0013] The steps are:
[0014] 1) Cool the on-line hot rolls with cooling water until the roll machine stops and the rolls are hoisted, then stop cooling,
[0015] 2) Put the roll into the cooling tank to cool for 50 minutes and then take it out.
[0016] 3) Forced cooling of the rolls on the roll laying platform by means of cooling water.
Embodiment 2
[0018] A method for cooling an online roll, the roll composition weight percent is: C: 0.9%, Si: 0.9%, Mn: 0.6%, Cr: 6.8%, Mo: 0.7%, V: 0.2%, Ni: 0.35%, P:0.01%, S:0.017%, the rest are Fe and impurities,
[0019] The steps are:
[0020] 1) Cool the on-line hot rolls with cooling water until the roll machine stops and the rolls are hoisted, then stop cooling,
[0021] 2) Put the roll into the cooling tank to cool for 50 minutes and then take it out.
[0022] 3) Forced cooling of the rolls on the roll laying platform by means of cooling water.
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Abstract
The invention discloses a cooling method of an online roller. The roller comprises components according to weight percentages: 0.9% of C, 0.9% of Si, 0.6% of Mn, 6.8% of Cr, 0.6%-0.7% of Mo, 0.2% of V, 0.25%-0.35% of Ni, 0.01% of P, 0.017% of S and the balance of Fe and impurities. According to the cooling method of the online roller, the online roller is cooled by cooling water, the roller can be naturally cooled when the roller is replaced, and finally, the offline roller is subjected to forced cooling by the cooling water, so that the roller can be rapidly and effectively cooled to a normal temperature.
Description
technical field [0001] The invention relates to an online cooling method for rolls. Background technique [0002] During the rolling process, the instantaneous temperature of the roll can reach 700-800°C. After a certain period of water cooling, the temperature is 80-100°C. During the rolling process, the strip steel has a certain offset, resulting in the temperature distribution of the roll. At this time, the shape of the roll is changed due to the influence of temperature, so the roll must be cooled to normal temperature before grinding the roll to avoid the influence of the temperature of the roll, and the existing cooling method cannot meet the requirements of the use of the roll Require. Contents of the invention [0003] The object of the present invention is to provide a cooling method for replacing hot rolls. [0004] The technical scheme adopted in the present invention is: [0005] An on-line cooling method for rolls, the weight percentage of roll components i...
Claims
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Application Information
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