A preparation device and method for a lightweight high-strength composite pin

Abstract

The invention discloses a preparation device and method of a light-weight high-strength composite pin shaft. The preparation device comprises a die, wherein the die comprises a left half die and a right half die, the left half die and the right half die are buckled to form an extrusion channel, the extrusion channel comprises an extrusion die opening, an inner groove extrusion deformation channel,an alloy powder injection channel and a part outlet which are connected in sequence, the inner groove extrusion deformation channel comprises a violent plastic shearing deformation channel, and a groove can be formed in the side wall of a part through the inner groove extrusion deformation channel. The composite pin shaft part manufactured by adopting the device and method is subjected to extrusion and strenuous plastic shearing deformation, the strength and the plastic toughness of the core base body are improved, the extruded core base body is subjected to alloy powder injection, so that metallurgical bonding is realized at the inner groove of the core base body and the alloy powder layer, high metallurgical bonding strength is achieved, the core base body and the alloy powder layer arenot easy to separate, and the strength, the hardness and the wear resistance of the part are improved by the alloy powder layer on the surface of the core base body.

Description

technical field [0001] The invention relates to the technical field of pin shaft preparation, in particular to a preparation device and method for a lightweight high-strength composite pin shaft. Background technique [0002] The pin shaft is a kind of standardized fastener, which can be statically fixed and connected, and can also move relative to the connected parts. It is mainly used at the hinge of two parts to form a hinge connection. The pin shaft is the most common part in construction machinery, with a large amount and a wide range of applications. In use, the pin shaft usually needs to bear large shear force and high bending load, and the failure mode is mostly severe wear or fatigue fracture. In addition, due to the large proportion of steel, the mass of traditional steel pins is large. When used in large quantities, not only the transportation cost is high, but also the storage and assembly costs are high, which is not conducive to the promotion and application o...

AI Technical Summary

Problems solved by technology

Since the pin shaft is made of aluminum alloy as a whole, it is prone to problems such as low strength and poor wear resistance during use

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