Composite sintered wear-resistant plate, preparation method and special stirring-mixing device

Abstract

The invention belongs to the technical field of composite sintered wear-resistant plates and preparation methods, and discloses a composite sintered wear-resistant plate, a preparation method and a special stirring-mixing device. The composite sintered wear-resistant plate is mainly technically characterized by comprising a base plate, wherein a rough surface is formed at one side of the base plate; a copper powder layer is arranged at the outer side of the rough surface; a graphene powder-copper powder mixing layer is arranged on the outer side surface of the copper powder layer; and the weight ratio of graphene powder to copper powder is (1-2): 100; and the particle sizes of the graphene powder and the copper powder are 200-300 meshes. In this way, the graphene powder-copper powder mixing layer and the base plate are firmer in bonding, graphene is high in content and good in lubrication effect, prepared bearings and other products are low in friction coefficient, and the service lives are greatly prolonged; and during mixing for the graphene powder and the copper powder, a mixing tank is vacuumized at first, and then high-pressure gas is blown into the bottom of the mixing tank, and a stirring mechanism is started up, and in this way, more uniform mixing is achieved, the content of the graphene powder can be effectively increased, and the wear resistance of the composite sintered wear-resistant plate is improved.

Description

technical field [0001] The invention belongs to the technical field of composite sintered wear-resistant plates, processing equipment and preparation methods, and in particular relates to a composite sintered wear-resistant plate, a preparation method and a special stirring and mixing device. Background technique [0002] In the field of motor vehicle bearings, in order to improve the wear resistance, sintered wear-resistant plates are used, and a layer of wear-resistant copper powder or other powders are sintered on the steel plates. The strength and impact resistance of the steel plates are relatively strong, and the copper powder or other powders are wear-resistant Good performance, so its comprehensive performance is greatly improved. In order to improve wear resistance, graphene powder is added to copper powder. Due to the different densities of copper powder and graphene powder, the current mixer is used to mix copper powder and graphene powder, resulting in uneven mi...

AI Technical Summary

Problems solved by technology

Due to the different densities of copper powder and graphene powder, the current mixer is used to mix copper powder and graphene powder, resulting in uneven mixing of copper powder and graphene powder. Copper powder and graphene powder are easy to fall off, the product quality is poor, and the content of graphene is low, which does not achieve a good lubrication effect, high friction coefficient, and short service life

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