Ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head and manufacturing method thereof

Abstract

The invention discloses a ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head and a manufacturing method of the ceramic particle multi-scale reinforced metalbase composite wear-resistant raking tooth head, and belongs to the field of part manufacturing. According to the manufacturing method, ceramic particles and alloy powder are compacted and sintered tomanufacture rod-shaped composite materials, the rod-shaped composite materials are embedded into a metal base through the combination of the powder metallurgy technology and the embedment casting technology, and the purpose that the metal base covers the uniformly-distributed rod-shaped composite materials is achieved. The ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head solves the problems that an ordinary raking tooth is prone to being worn, and a homogeneous composite wear-resistant part is poor in toughness, brittle and low in impact resistance. Compared with overall metallurgical sintering, the manufacturing method has the advantages that by means of the technology of combination of powder metallurgy and embedment casting, the dimensionalaccuracy of parts is guaranteed, the requirements of specific parts for using performance are met, the assembling working procedure is omitted, the manufacturing technology is simplified to a certainextent, the part manufacturing cost is greatly reduced, the organization is compact, the metallurgical bonding is good, and the ceramic particle multi-scale reinforced metal base composite wear-resistant raking tooth head can be applied to cleaning and screening vehicles for railway maintenance and parts of raking teeth of scraper loaders.

Description

technical field [0001] The invention belongs to the technical field of parts preparation, and in particular relates to a ceramic particle multi-scale reinforced metal matrix composite wear-resistant rake tooth head and a preparation method thereof. Background technique [0002] The cleaning truck for railway maintenance is mainly used for backfilling after loosening the rock slag on the railway bed. The rake bucket rock loader is an important mining equipment used for excavation and tunneling. The rake tooth is an important part of the two equipments. One of them is also an important part of some mining machinery and road maintenance machinery. The quality of the rake tooth head determines the speed of the work efficiency of this type of equipment. Rake tooth heads are subjected to different degrees of wear and impact under different working conditions, resulting in different degrees and different forms of failure, while ceramic particle reinforced metal matrix composites ha...

AI Technical Summary

Problems solved by technology

The wear resistance, hardness, and impact resistance of the rake teeth of this invention are significantly improved, but the thickness of the composite wear-resistant layer on the surface of the tooth head is limited, and most of them are ordinary alloys, which cannot fully utilize most of the structure of the tooth head, which restricts the extension of service life.

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