Surface strengthening coating of agricultural machinery transmission components and preparation method thereof

Abstract

The invention provides a strengthened coating on the surface of a transmission component of an agricultural machine. The strengthened coating comprises the following raw materials in parts by weight:10-13.5 parts of high entropy alloy powder, 31-40 parts of hard alloy powder, and 46.5-59 parts of shape memory alloy powder. A preparing method comprises the following specific preparing steps of atfirst, separately grinding the nickel-base high entropy alloy powder, the hard alloy powder and the shape memory alloy powder in fine powders by a ball grinding mill; and then mixing the three alloy fine powders, adding an organic binding agent, sufficiently and uniformly mixing at a room temperature, smearing and heating, thereby obtaining the strengthened coating. The high entropy alloy powder,the hard alloy powder and the shape memory alloy powder are smashed, and are uniformly bound together by the organic binding agent, wherein the hardness of high entropy alloy and the hardness of hardalloy are higher, the high entropy alloy and the hard alloy are mainly used for improving the wear resistance of the transmission component of the agricultural machine, however the shape memory alloyis added to facilitate improving the toughness of the coating and prevent brittle rupture and falling of the coating due to too hard high entropy alloy and hard alloy, so that the service life of thetransmission component of the agricultural machine is effectively prolonged.

Description

technical field [0001] The invention belongs to the technical field of alloy coating and its preparation, and in particular relates to a surface strengthening coating of an agricultural machinery transmission component and a preparation method thereof. Background technique [0002] With the rapid development of science and technology, research on new materials in the field of materials has become a new direction of research. Composite materials have become a research hotspot because of their excellent performance, and through the application of external additives, in-situ generation of various nitrides, carbonization Composite materials prepared by methods such as compounds, oxides and borides have been successfully applied in industry and actual production. [0003] Agricultural machinery transmission components are generally used as key wear-resistant parts in agricultural machinery, and their material properties have an important impact on their working life, working effi...

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Problems solved by technology

[0003] Agricultural machinery transmission components are generally used as key wear-resistant parts in agricultural machinery, and their material properties have an important impact on their working life, working efficiency and farming effect of agricultural machinery; in order to improve the hardness and wear resistance of the surface of agricultural machinery transmission parts, at the same time Keep the core with sufficient strength and toughness to effectively prolong the service life of agricultural machinery transmission components. Usually, the surface of the agricultural machinery contacting parts is subjected to high-temperature heating treatment. First, the entire agricultural machinery transmission components are quenched, and then the surface is subjected to low temperature Tempered martensite is obtained by tempering treatment, but its hardness is low and its wear resistance is poor, which cannot fully meet the requirements of the surface wear resistance of agricultural soil-contacting parts in actual agricultural production operations. In order to improve the hardness and wear resistance of the parts surface A common technical solution in the industry is to prepare reinforced coatings on the surface of components. The use of coating materials is especially important for agricultural machinery transmission components, which directly affects their service life.

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