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Method and apparatus for descaling and cleaning rolled stock such as slabs, thin slabs, hot strip or roughed strip

机译:用于对诸如板坯,薄板坯,热轧带钢或粗轧带钢的轧制材料进行除鳞和清洁的方法和设备

摘要

In a method for descaling and cleaning rolled stock such as slabs, thin slabs, hot strip or roughed strip in the rolled-hot or cold state, in which the upper and lower faces of the rolled stock are impinged, as the latter passes through a scale scrubber (7), by extremely high-energy water jets directed towards them at an impact angle and emerging from the nozzles or nozzle heads at high speed and in the process the scale layers (FeO; Fe3O4; Fe2O3) are to a very large degree removed, it is proposed, for optimal cleaning of the rolled stock of broken-off scale particles and other solids including the water used for breaking off these particles, that the nozzles or the nozzle heads are enclosed by a housing (25), except for a gap (27) at a small distance from the surface (8) of the rolled stock, that air is extracted from the housing (25) by applying a vacuum and, in an air flow which is thereby produced and enters through the gap (27), a mixture of water, detached scale and other solid particles is entrained, extracted and carried away out of the region of the rolled stock. A vacuum of between 600 and 800 mbar is applied to the housing (25). IMAGE
机译:在一种用于对热轧或冷轧状态的诸如板坯,薄板坯,热轧带材或粗轧带材等轧制材料进行除鳞和清洁的方法中,当轧制材料的上表面和下表面通过时,该轧制材料受到上下碰撞。污垢洗涤塔(7),通过以冲击角指向它们并从喷嘴或喷嘴头高速喷出的高能水射流,在此过程中,污垢层(FeO; Fe3O4; Fe2O3)很大为了最佳地清洁卷起的水垢颗粒和其他固体(包括用于分解这些颗粒的水),建议将喷嘴或喷嘴头用外壳(25)封闭,以达到最佳清洁效果。对于距轧件的表面(8)一小段距离的间隙(27),通过施加真空将空气从壳体(25)中抽出,并由此产生并进入空气流(27),水,超标水垢和其他固体粉末的混合物物品被夹带,提取并带出轧制区域。壳体(25)的真空度为600至800 mbar。 <图像>

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