High temperature and erosion resistant centrifugal roller and manufacturing method thereof

Abstract

The invention discloses a high-temperature and scouring-resistant centrifugal roll, which comprises a roll base body made of ordinary steel and a protective layer on the outer periphery of the roll base body, and is characterized in that the protective layer is made of manganese steel. The invention also discloses a method for manufacturing the above-mentioned centrifugal roll. After the roll base body is obtained by processing ordinary steel, manganese steel welding wire is used to overlay weld the outer circumference of the roll with a carbon dioxide automatic welding machine. During welding, the inner hole of the roll Add cooling water to form the manganese steel protective layer of the centrifugal roll; then machine the centrifugal roll to obtain the required centrifugal roll with protective layer. Since the protective layer of the centrifugal roll of the present invention adopts manganese steel with thermal conductivity close to that of the roll base body, the cost of processing and repairing the centrifugal roll is greatly reduced, and the difficulty of combining the material of the protective layer and the roll base is reduced. At the same time, the reusable times of the roll blank increases, and the surface does not expand or crack when heated, which improves the cotton yield and product quality.

Description

technical field [0001] The invention relates to a centrifuge for processing high-temperature melt, in particular to a centrifugal roller on the centrifuge and a manufacturing method thereof. Background technique [0002] In the production of thermal insulation materials such as rock wool and mineral wool, the main process is that the high-temperature melt is centrifuged into fibers at high speed by a four-roller centrifuge, so the centrifuge is one of the main production equipment. As the main part of the centrifuge, the centrifugal roller must be resistant to high temperature and erosion. In order to ensure the use, all manufacturers use stainless steel welding wire (HICrl8Ni9Ti) to process the protective layer on the centrifugal roller. Based on the cost problem, the centrifugal roller blank body is generally processed by ordinary steel. [0003] This kind of centrifugal roller with stainless steel as the protective layer maintains a good level in terms of service time, b...

AI Technical Summary

Problems solved by technology

[0004] First, due to the high price of argon gas used in stainless steel welding wire and stainless steel shielded welding, the cost of processing or repairing such centrifugal rollers is very high;

[0005] Second, the roll blank is easily deformed by heat during production, and the reuse rate is low;

[0006] Third, the surface of the roller is easy to expand and crack after being heated, and the finish is not high, which affects the quality of the finished product

[0007] Due to the above-mentioned defects, the production cost is very high, and the cotton yield and product quality are reduced

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