Squeezing roller sleeve and manufacturing method thereof

Abstract

The invention relates to a squeezing roller sleeve and a manufacturing method thereof. The squeezing roller sleeve comprises a roller sleeve base body and an insert, wherein the roller sleeve base body and the insert are combined in an imbedding manner; the strength of the roller sleeve base body is lower than that of the insert; the toughness of the roller sleeve base body is higher than that of the insert; the roller sleeve base body is in a cylindrical shape; and the insert is arranged on the outer circumferential face of the roller sleeve base body. The manufacturing method of the squeezing roller sleeve includes the following steps that the insert is prefabricated, the casting mold of the squeezing roller sleeve is manufactured, the squeezing roller sleeve is formed through an imbedding process, and heat treatment is performed on the squeezing roller sleeve. The abrasion resistance and the anti-fatigue performance of the squeezing roller sleeve are good, the service life is long, and the production cost is low.

Description

technical field [0001] The present invention relates to a squeeze sleeve for a rolling machine and a method for manufacturing the squeeze sleeve. Background technique [0002] Roller compactors are common host equipment in pre-grinding, combined-grinding and final-grinding systems. [0003] first according to figure 1 The working principle of the conventional squeeze roll will be described. figure 1 In , two squeeze rolls with the same structure are arranged side by side with a certain distance from each other. The outer peripheral surface of the roller body 2 of the squeeze roller is provided with multiple rows of roller teeth 1 arranged at equal intervals along the circumferential direction. The columns formed by the teeth 1 of the two squeeze rolls are staggered, so that each bar tooth row on one squeeze roll corresponds to the gap between two adjacent roll teeth rows on the other squeeze roll . [0004] The material P falls between the two squeeze rollers from above...

AI Technical Summary

Problems solved by technology

Since the materials of the two parts are different, the shrinkage / expansion rate of the material is also different during cooling or heat treatment after casting, so that undesired stress residues are easily generated between the joints of opposite materials in the roll body, making extrusion The actual wear resistance and fatigue resistance of the pressure roller are reduced, which affects the service life. In addition, the equipment and process of this casting method are very complicated, requiring metal molds, the yield is low, and the overall fracture often occurs during use, resulting in high production costs. and unstable quality

Images