Repaired continuous casting roller axial additive preparation method

Abstract

The invention discloses a repaired continuous casting roller axial additive preparation method, and belongs to the technical field of repairing of mechanical parts. The preparation method comprises the steps that 1, roller faces are turned, specifically, roller face corrosion fatigue layers of continuous casting rollers are removed; 2, end faces are turned, specifically, the two end faces are turned by certain sizes correspondingly; 3, patches are welded, specifically, spot welding of the patches is conducted on the two turned axial end faces of the continuous casting rollers; 4, roller face overall surfacing is conducted, specifically, overall submerged arc surfacing of an abrasion-resistant alloy layer is conducted on the roller faces of the continuous casting rollers; 5, machining reshaping is conducted, specifically, machining reshaping is conducted on the air-cooled continuous casting rollers; 6, inspection is conducted, specifically, surface dye penetrant inspection is conductedon the machined continuous casting rollers, and whether the working surfaces of the continuous casting rollers have defects such as cracks or not is detected; and 7, packaging is conducted, specifically, anti-rust oil is painted and brushed on the continuous casting rollers passing the inspection, and the continuous casting rollers are packaged for standby application. According to the repaired continuous casting roller axial additive preparation method, the number of repairable times of the continuous casting rollers can be increased, and material waste is reduced.

Description

technical field [0001] The invention relates to a preparation method for repairing continuous casting rolls by adding axial materials, and belongs to the technical field of repairing mechanical parts. Background technique [0002] The continuous casting roll is an important part of the continuous casting machine, which bears the functions of carrying and driving the billet and the movable billet mold. In use, the continuous casting rolls are in continuous contact with the red-hot slab that has not yet solidified inside, not only repeatedly subjected to the alternating cold and heat shock cycles of local high-temperature heating and water cooling, but also subjected to the alternating bulging force and static pressure of the slab. Mechanical stress, harsh working conditions. After using for a period of time, the roller surface often has different degrees of network cracks, oxidation corrosion, burning, wear and other conditions, which lead to failure, which seriously affects...

AI Technical Summary

Problems solved by technology

After repairing for 2~5 times, the length of the continuous casting roll will be 5~8mm shorter than the standard size, resulting in an increase in the gap between the end face of the continuous casting roll and the bearing seat, and impurities such as billet oxide skin can easily enter the bearing in the bearing seat, thereby causing Bearing short-term grinding failure

Due to the relatively thin wall thickness of the end face of the continuous casting roll, traditional surfacing and manual welding for additive manufacturing of the end face can easily lead to deformation of the end face, affecting the sealing and assembly of the continuous casting roll, and the repair yield and efficiency are low in actual production