Grinding sheet for disc grinder and manufacturing method thereof

Abstract

The invention provides a grinding sheet for a disc grinder and a manufacturing method thereof. The grinding sheet comprises grinding teeth and grinding sheet base body which are respectively processed twice for forming, wherein the grinding teeth which are arranged into a plurality of concentric circles are uniformly distributed on the grinding sheet base body around a center shaft of the grinding sheet base body, pulp baffle plates are arranged among the grinding teeth, and the pulp baffle plates positioned on a same circle form spiral pulp baffling lines on the surface of the grinding sheetbase body. The manufacturing method of the grinding sheet comprises the following steps: firstly, manufacturing the grinding teeth needed by the grinding sheet, and carrying out the surface processing of the grinding teeth; then processing a mould according to the designed form of the grinding sheet, installing the grinding teeth and the pulp baffle plates on the mould, and then casting or vulcanizing the mould provided with the grinding teeth; forming the grinding sheet base body, and simultaneously fixing the grinding teeth on the grinding sheet base body; and finally cooling a taper to finish the manufacturing process. The grinding sheet has good pulp grinding effect and long service life; in addition, the grinding sheet adopts a post forming method, thereby greatly reducing the material cost of the grinding sheet and the waste of materials.

Description

technical field [0001] The invention relates to the technical field of medium-consistency hydraulic disc grinders, in particular to a disc grinder and a manufacturing method thereof. Background technique [0002] The grinding disc is a key part of the medium-consistency hydraulic disc mill and is a wearing part. Therefore, in addition to the good refining effect, the grinding disc must also have good wear resistance and resistance to certain impacts in production. The mechanical toughness of the load also requires that the grinding disc must have a long service life, so as to maintain the long-term stability of the pulp quality during production and reduce the fluctuation of pulp quality. In actual production, the key factor affecting the long-term stability of the refining effect is actually the quality of the grinding teeth of the grinding disc. Most of the grinding plate structure is an integrated structure of grinding teeth and grinding plate base, which makes the grind...

AI Technical Summary

Problems solved by technology

In actual production, the key factor that affects the long-term stability of the refining effect is actually the quality of the grinding teeth of the grinding disc. Most of the grinding plate structure is an integrated structure of grinding teeth and grinding plate base, which makes the grinding teeth and grinding plate base must be made of the same material, which is very unfavorable for the cost control of high-life grinding discs

However, the current grinding discs are usually integrally cast with cast iron or alloy steel. Although cast iron is cheap, stable, and not easily deformed, its biggest disadvantages are low hardness, poor wear resistance, and short service life; at the same time, due to the One-time casting is used, which is prone to problems such as low yield of grinding discs and waste of materials, so the price of high-life grinding discs is higher

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