Hot rolling work roll water scraping fuel injection system and method

Abstract

The invention discloses a hot rolling work roll water scraping fuel injection system which comprises a movable device and a water scraper blade installed on the movable device. The movable device can drive the water scraper blade to move towards the roller face of a working roller. A chamfer is arranged at the head of the water scraper blade. The chamfer is located on the intersection of the upper surface of the water scraper blade and the end face of the head. The chamfer is coated with a wear-resisting material. The chamfer makes contact with the working roller. A through hole which is through in the front-back direction is formed in the head of the water scraper blade. A groove is formed in the radial direction of the through hole. One end of the groove is communicated with the through hole. The other end of the groove is communicated with the outer side of the end face of the head of the water scraper blade. A roller-gap lubricating device is installed inside the through hole and the groove. The hot rolling work roll water scraping fuel injection system has the advantages that the roller-gap lubricating device is arranged inside the water scraper blade, the water scraper blade is cooled constantly by cooling water, collected by the water scraper blade, on the working roller, the water scraper blade is in the low-temperature (lower than 50 DEG C) state all the time, and therefore the roller-gap lubricating device is free from high-temperature radiation of hot rolling strip steel.

Description

technical field [0001] The invention belongs to the technical field of hot rolling, and in particular relates to a system and method for wiping and spraying oil for hot rolling work rolls. Background technique [0002] The use of wiper blades and roll gap lubrication is an essential technical means to ensure the smooth progress of hot rolling production. The wiper blades include inlet wiper blades and outlet wiper blades, whose function is to scrape off the cooling water on the surface of the work rolls, prevent the cooling water of the work rolls from splashing on the high-temperature strip, and ensure the temperature requirements of the hot-rolled strip steel. The roll gap lubrication device (including injection header and nozzle) is arranged on the entrance side of the work roll, and its function is to spray the oil-water mixture on the work roll at the entrance side to reduce the friction coefficient of the roll gap, so as to reduce rolling energy consumption and work R...

AI Technical Summary

Problems solved by technology

However, closing the inlet cooling water of the work roll 8 is not conducive to the sufficient cooling of the work roll 8. During hot rolling, the work roll 8 is in a higher temperature state and generates a thicker surface oxide film, which is prone to peeling off of the work roll 8 surface oxide film, affecting normal production

[0004] In addition, the existing roll gap lubricating device and the inlet wiper are installed on the frame, and the position is fixed and cannot be moved. Ensure that the contact position between the wiper blade and the work roll and the position where the oil-water mixture is sprayed onto the work roll surface are optimal, and it is difficult to maintain a stable and good wiper effect and roll gap lubrication effect; (2) When the hot rolling process occurs In the event of a broken belt winding accident, the steel strip is likely to hit the injection header, nozzle and wiper, and even cause damage to it in severe cases, affecting normal production

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