Integrated crushing tooth of grading crusher and manufacturing method thereof

Abstract

The invention discloses the integrated crushing tooth of a grading crusher and a manufacturing method thereof, which is characterized in that the integrated crushing tooth takes alloy high manganese steel as a main raw material and adopts an integrated lost foam casting process; the center of the integrated crushing tooth (3) is provided with a tooth roller hole (5) with a key slot (4); the outer wall of the integrated crushing tooth (3) is provided with an outer circular tooth (6); and a hard alloy bar (2) is cast on the outer circular tooth (6). The integrated crushing tooth manufactured by the invention has the advantages of good strength and toughness, and higher hardness and abrasion resistance, can carry out the cutting machining and is suitable for manufacturing the crushing tooth of a tooth sleeve type grading crusher.

Description

technical field [0001] The invention relates to a crushing tooth of a crusher, in particular to an integral crushing tooth of a grading crusher and a manufacturing method thereof. Background technique [0002] As we all know, classifying crushers are mainly suitable for coarse and intermediate crushing of brittle massive materials in coal, metallurgy, building materials, chemical and other industries. Especially in the coal industry, the use of three machines to crush the raw coal can be crushed directly after iron removal, impurity removal, and gangue removal. The crushed materials have uniform particle size and low over-grinding rate, thereby simplifying the coal preparation process and reducing the cost. investment and production costs. Therefore, since it was put on the market, it has been well received by many users. [0003] However, with the in-depth mining of coal resources, the quality of coal decreases, and the pressure of coal washing and processing increases. E...

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Problems solved by technology

[0003] However, with the in-depth mining of coal resources, the quality of coal decreases, and the pressure of coal washing and processing increases. Especially, the increase in gangue content and the hardness of raw coal bring unprecedented challenges. This requires the classification of crushers. The crushing teeth should not only have sufficient wear resistance, but also have relatively high toughness, and also be easy to process and replace.

Undoubtedly, in order to improve the wear resistance of the crushing teeth, the hardness of the material used must be increased, but as the hardness increases, the impact toughness will inevitably decrease, and at the same time, the greater problem is that the cutting process becomes more difficult. Broken teeth made of high-hardness materials cannot be machined at all

So far, it can be said that the material selection and manufacturing method of the crushing teeth of the grading crusher have not really been solved. The key to the problem is that it is difficult to solve the contradiction between the wear resistance, toughness and processability of the material.

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