Hammer based on functionally graded composite material and preparation method thereof

Abstract

The invention discloses a hammer based on a functional gradient composite material. The hammer based on the functional gradient composite material comprises a hammer base body, and is characterized in that the operation end of the hammer is provided with a ceramic particle reinforced composite layer with the content of WC being above 50% as a wear-resisting layer; the surface layer tissue in the middle of the hammer is composed of a fine-needle-shaped tempered martensite and fine carbide particles, wherein the carbon content is 0.8%-1.0%; the transition layer tissue is composed of the fine-needle-shaped tempered martensite and a lath-shaped tempered martensite, and the heart part tissue adopts a lath-shaped tempered martensite with the carbon content of 0.2%; the pin hole part tissue of the fixed end of the hammer mainly adopts a tempered sorbate. The invention also discloses a preparation method. The obtained hammer based on the functional gradient composite material has the advantages of high performance and long service life, is high in production cost and profit, a great number of steel materials can be saved for the crusher industry of China, energy consumption can be reduced, the energy conservation and environment protection in the industry can be promoted, and the core competitiveness can be improved.

Description

technical field [0001] The invention relates to the technical field of pulverizer hammer production, in particular to a hammer based on gradient functional composite materials and a preparation method thereof. Background technique [0002] Hammer mills are widely used in feed, grain, food, medicine, chemical and other industries. The hammer mill is a mechanical device that uses a high-speed rotating hammer to crush materials, and the hammer is the core component of all kinds of mills. The high-speed rotation of the main shaft makes the angular speed of the hammer end reach 50-100m / s. The surrounding sieve and tooth plate form a crushing chamber. After the material enters the crushing chamber from the feeding hopper, it is impacted by the high-speed hammer, the impact of the tooth plate and the sieve, and the friction between the sieve and the hammer. After being gradually crushed to a certain fineness, it is discharged from the sieve hole and sent out of the machine by a th...

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Problems solved by technology

[0005] In view of the above-mentioned technical status, the object of the present invention is to provide a hammer and its preparation method to solve the problems of poor wear resistance and low service life of the above-mentioned hammer

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