Abstract
Rapid development of mechanical cultivation demands satisfactory wear performance and lower soil adhesion on the soil-engaging components of terrain machinery. A thick 2Cr13 hard coating was used in conjunction with surface textures in this sector. The results showed that 2Cr13 coating and surface texture decreased the friction coefficient and wear rate enormously. The surface wettability of the coating was reduced by a dimpled-surface texture. The adhesion test suggested that dimples greatly decreased the adhesion force by decreasing the friction component and the decrement increased with the increase of dimple size. The adhesion force increased with the soil moisture and then decreased when exceeding the moisture content threshold.
Highlights
Efficient, low cost mechanical cultivation is an important component of modern agriculture.it makes high demands on the soil-engaging component of terrain machinery because of soil abrasion and soil adhesion
The results suggested the microreduce the friction coefficient which has been reported in YT15 cemented carbides [29]
The sample with 300 μm experiment is finished, the sample is cleaned with an ultrasonic wave, and the data is weighed and dimples presented the lower coefficient of friction (COF) but possessed a larger contact area compared with the sample with recorded again
Summary
Low cost mechanical cultivation is an important component of modern agriculture. Studies on the plastic-coated furrower revealed lower draft force and soil adhesion due to its self-scouring ability and low frictional characteristics [10] The thickness of these coatings is less than 100 μm which is too thin for the abrasive wear caused by the hard abrasiveness of soil. The effects of surface strengthening and bionic engineering on wear behaviors of soil-engaging components are studied separately. The combination of surface strengthening and surface bionic engineering has not been explored in soil-engaging components, and it is expected to increase the wear resistance and decrease soil adhesion simultaneously. The combination of surface coating strength and surface texture is expected to increase the wear resistance and decrease the soil adhesion of the soil-engaging components. The friction behavior and soil adhesion are explored to gain understanding of the mechanism of friction-reduction and adhesion-reduction of the surface texture
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