A method for cleaning the roll surface of twin-roll thin strip continuous casting

Abstract

A method for cleaning the roll surface of twin-roll thin strip continuous casting. The roll surface cleaning device includes two brush rolls, which are respectively arranged parallel to the crystallization rolls and are in the shape of a column, and slender metal wires are planted as bristles on the outer periphery of the brush rolls; There is a bearing seat at the end; a pressure sensor is installed at the rear of the bearing seat; two motors are respectively connected to two brush rollers; two hydraulic cylinders act on the bearing seat through the pressure sensor to drive the brush roller to stick to or leave the crystallization roller; Servo valves are set in the control circuits of the hydraulic cylinders; displacement sensors are set on the hydraulic cylinders; a controller, a pressure sensor, a displacement sensor and the servo valves of the two hydraulic cylinders are electrically connected to the controllers; the method includes cleaning the roller surface with the brush roller , the product of its ratio to the rotation speed of the crystallization roller multiplied by the planting density of the brush roller is greater than 1, and the bristle bending e of the brush roller is kept at 0.5% to 2.5%. The invention improves the cleaning effect of the crystallization roller by the roller surface cleaning device, ensures uniform distribution of the oxide film on the crystallization roller surface, and improves the quality of the casting belt.

Description

technical field [0001] The invention relates to a continuous casting process, in particular to a method for cleaning the roll surfaces of twin-roll strip continuous casting. Background technique [0002] As a short-flow metallurgical technology, twin-roll strip continuous casting technology has a typical production process: molten steel is directly cast in a space surrounded by two crystallization rolls that rotate in opposite directions and have a cooling function and side sealing plates The molten pool is formed, the molten steel is cooled and then solidified on the surface of the crystallization roll, and finally a thin strip steel is formed at the smallest gap of the crystallization roll, and the thin strip steel is coiled after hot rolling and cooling, and is directly manufactured into a hot rolled finished coil. [0003] During the solidification process of molten steel, many metals or non-metals will evaporate and form oxides to deposit on the metal substrate, and for...

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