High-efficiency degreasing and cleaning device and method for strip steel

Abstract

The invention relates to a high-efficiency degreasing and cleaning device and method for strip steel. The device comprises an ultrasonic alkaline cleaning tank, an ultrasonic rinsing tank and a spraytank, wherein the ultrasonic alkaline cleaning tank, the ultrasonic rinsing tank and the spray tank are sequentially connected and internally provided with clamping and conveying rollers which are used for conveying the strip steel. The front segment of the ultrasonic alkali cleaning tank is an alkali liquid spraying section, wherein the alkali liquid spraying section is provided with alkaline liquid spraying heads, and the rear segment of the ultrasonic alkali cleaning tank is an ultrasonic cleaning section. The ultrasonic cleaning section is internally provided with ultrasonic vibrators, wherein the ultrasonic rinsing tank is also internally provided with ultrasonic vibrators. The ultrasonic vibrators are arranged at the upper and lower parts of the strip steel, or disposed on the side walls of tank bodies, and the ultrasonic vibrators are connected with an ultrasonic generator. The spray tank is internally provided with hot water spray heads, and overflow water in the spray tank flows into the ultrasonic rinsing tank. According to the high-efficiency degreasing and cleaning device and method for the strip steel, the surface quality of the strip steel can be obviously improved, and the problems of high investment, high operation cost, large amount of alkali mist and the like brought from an conventional electrolytic cleaning process can be solved.

Description

technical field [0001] The invention relates to the technical field of strip steel surface cleaning, and more specifically relates to a high-efficiency degreasing and cleaning device and method for strip steel. Background technique [0002] The surface quality of strip steel is one of the key factors affecting the improvement of product performance. Rolling oil, engine oil, dust, iron powder, etc. are attached to the surface of the cold-rolled steel strip. If the treatment is not clean, it will affect the subsequent treatment process, resulting in weakened decarburization effect in the annealing process, polluting the atmosphere in the furnace, and even causing carburization, resulting in Furnace roll nodules, eventually lead to the decline of strip surface quality, strip scratches. [0003] Cold-rolled strip steel generally adopts the combination of chemical cleaning + electrolytic cleaning + physical rinsing. Electrolytic cleaning has the advantages of fast cleaning speed...

AI Technical Summary

Problems solved by technology

CN206240948U, CN201669281U disclose the device that utilizes ultrasonic wave to strengthen strip steel cleaning, but this patent arranges ultrasonic vibrator on the side of strip steel, experimental result shows, under short-time ultrasonic contact, energy attenuation when sound wave penetrates high-speed running strip steel is very Large, there is almost no cleaning effect on the other side of the strip, and it is impossible to obtain strips with clean upper and lower surfaces. Therefore, the effectiveness and practicability of cleaning the strip surface cannot meet the requirements.

CN206676826U has a long cleaning process and also has the disadvantage of ultrasonic single-sided layout, and the production line is not suitable for cleaning high-tension large-section continuous strip steel

Equally, CN206670203U cleaning process is long, and adopts the scrubbing device that is difficult to maintain and easy to block the pipe section

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