| 摘要 |
PURPOSE:To manufacture the product with high accurate dimension, and to prevent the generation of flaw, by injecting high pressure liquid directing the gap between the backup roll and the sleeve, on purpose to wash out the solids which penetrate into the gap and stick to the roll and sleeve, and by carring out the rolling. CONSTITUTION:On both sides of the sleeve 3, the injection nozzles 4 are arranged facing each other. The liquid is injected from the injection nozzles 4 parallelly to the roll axis directing the gap (g) between the backup roll 2 and the sleeve 3; this injected liquid washes out the sticking substances on the backup roll 2 and the sleeve 3, and then arrives at approximate middle of the sleeve 3. The liquids injected from both sides collide with each other at this point and cause a violent turbulence, which effectively washes out the sticking substances. The injection pressure is high, 50kg/cm<2> for instance. For the liquid, the rolling mill oil, water, etc., are employed; in case of the rolling mill oil, the washing out of the sticking substances and the lubrication between the backup roll 2 and the sleeve 3 are simultaneously performed; and the concentration of the circulated rolling mill oil is inveriable, so that the empolyment of the rolling mill oil is desirable. |
