Wear-resistant tooth roller of tooth roller crusher and production method of wear-resistant tooth roller

Abstract

The invention discloses a wear-resistant tooth roller of a tooth roller crusher and a production method of the wear-resistant tooth roller. The wear-resistant tooth roller comprises a roller drum and roller teeth fixedly arranged on the outer surface of the roller drum. The wear-resistant tooth roller is characterized in that the roller teeth are fixedly connected with the outer surface of the roller drum in a welding way; counter bores are drilled in the top surfaces of the roller teeth, and a high-carbon and high-chromium wear-resistant welding wire is welded into the bores and fills the bores to form an impact-resistant column of the roller teeth; and a wear-resistant layer is overlaid on each of the outer surfaces of the roller teeth and the roller drum by using the high-carbon and high-chromium wear-resistant welding wire to form a wear-resistant tooth roller working surface capable of prolonging the service life of the tooth roller crusher. According to the method, the roller drum and the roller teeth are produced in different steps; then, the roller teeth with wear-resistant protective layers are fixedly connected with the outer surface of the roller drum in the welding way; and a wear-resistant protective layer is overlaid on the rest outer side surface of the roller drum, so that the wear resistance of the roller teeth is greatly improved, and the service life of each roller tooth is greatly prolonged. By using the method, worn and scrapped old tooth rollers can also be repaired and recycled, so that wastes are utilized, resources are saved, and the cost is reduced.

Description

technical field [0001] The invention relates to a toothed-roll crusher, in particular to a method for manufacturing the toothed roll of the toothed-roll crusher. Background technique [0002] The toothed roller crusher mainly uses two toothed rollers, the high extrusion force and shear force generated by the relative rotation of the two toothed rollers to crush the material, that is, after the material enters the crusher, the high extrusion force of the two rollers in the opposite direction And under the action of shear force, the material is broken. It has a very good crushing effect for materials with high viscosity and low specific gravity. Because the teeth of the toothed roller crusher protrude outside, and contact with the material at high speed for a long time and drive the material to move, the wear of the teeth is very serious, and the roller The wear resistance of the teeth determines the working efficiency of the toothed roller crusher. If the roller teeth wear m...

AI Technical Summary

Problems solved by technology

However, because the toothed roller crusher works at a high speed and has a large impact, the welded metal of the generally good wear-resistant electrode is relatively brittle and cannot withstand large impacts.

If the surfacing wear-resistant layer is thicker, the wear-resistant layer will fall off after receiving a large impact during work; if the wear-resistant layer is welded thinner, it will wear out quickly, which cannot provide long-term wear-resistant protection and working time

However, if the cobalt-based and nickel-based materials with good wear resistance and toughness are selected for surfacing welding, the cost is too high and it is not economical.

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