ZGM type repairable metal ceramic composite grinding roller and manufacturing method

Abstract

The invention discloses a ZGM type repairable metal ceramic composite grinding roller and a manufacturing method. The composite grinding roller comprises a substrate, a plurality of ceramic composite grinding roller skins, a clamping block and a plurality of reinforcing parts. The multiple mutually spliced ceramic composite grinding roller skins are assembled to the outer substrate face of the substrate. Clamping grooves are formed in the inner sides of the ceramic composite grinding roller skins. A plurality of through holes distributed in the circumferential direction are formed in the inner side face of the substrate. One ends of the reinforcing parts are connected with the ceramic composite grinding roller skins through the clamping grooves in a clamped mode. The other ends of the reinforcing parts penetrate through the through holes and are fixedly connected through nuts. The clamping block is arranged on the side portion of one of the ceramic composite grinding roller skins. Through the ZGM type repairable metal ceramic composite grinding roller and the manufacturing method, the prepared high-abrasion-resistance composite grinding roller has long service life and reparability, the grinding roller manufacturing method is simple, the machining period is short, and the cost is effectively lowered.

Description

technical field [0001] The invention relates to the field of new materials, in particular to a ZGM type repairable cermet composite grinding roller and a manufacturing method thereof. Background technique [0002] Coal mill is one of the important equipment of thermal power plant. Grinding roller and liner are the key core components of coal mill. The quality, especially the wear resistance, directly affects the pulverization efficiency, pulverized coal quality, grinding Roll consumption and production costs. Under the working conditions of milling, any grinding roller material in the past will have serious wear and tear. When the wear reaches a certain limit, the outer circle of the grinding roller is too small and it will be scrapped. At present, both at home and abroad are vigorously researching the preparation process of grinding rollers, such as composite casting, centrifugal casting and surfacing welding, etc. The purpose is to manufacture a new composite grinding rol...

AI Technical Summary

Problems solved by technology

However, the existing grinding roller structure and technology have defects such as cracking, falling off, and irreparability, resulting in high service life and cost, and poor coal grinding effect. For example, the one-time casting grinding roller of Makoto Company is expensive and impossible. Repair; India Vega secondary casting molding grinding roller, easy to break, and even cause wear parts to fall off

[0003] Based on the above problems, this patent provides a manufacturing method of a ZGM type repairable metal-ceramic composite grinding roller, aiming at the difficulty and high cost of repairing the surface of the ZGM type grinding roller, realizing the high wear resistance and repairability of this type, and solving the problem During the production process of the coal mill, the grinding roller is easily damaged and difficult to replace

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