Composite extrusion device and extrusion method for fiber-reinforced circular tubular material

Abstract

The invention discloses a fiber-reinforced round tube round tube section compound extrusion device and an extrusion method thereof. The compound extrusion device comprises a compound extrusion die anda fiber pull device, wherein the compound extrusion die comprises a guide plate, an upper die and a lower die; a first diversion hole is formed in the guide plate; at least one diversion bridge is arranged in the first diversion hole; a second diversion hole is formed in the upper die; at least one second diversion bridge is arranged in the second diversion hole; the second diversion bridge is connected with a die core; a fiber feed channel is formed in the guide plate and / or the upper die; an outlet is parallel to a section extrusion direction; a welding chamber, a die hole and an air knifecommunicated with one another are arranged on the lower die; the die core stretches into the die hole. According to the compound extrusion device and the extrusion method thereof disclosed by the invention, the sections can be continuously reinforced at a specified position of a cross section of the sections, and continuous compound extrusion is realized. Meanwhile, compared with the traditional fiber granule mixed blank, the conventional blank is used in the invention, the production cost is reduced, and the wear resistance of the die is improved.

Description

technical field [0001] The invention relates to the technical field of metal extrusion, in particular to a composite extrusion device for fiber-reinforced circular tube materials and an extrusion method thereof. Background technique [0002] For economical and environmental reasons, particularly in the automotive and aerospace industries as well as in construction, the lightweighting strategy of profiles has become an important aspect of structural part design. On the one hand, reducing the overall weight of the vehicle will reduce fuel consumption and carbon dioxide emissions; on the other hand, from a safety point of view, structural parts require better mechanical properties. The development of hybrid structural parts is a feasible method to meet this demand. The design of hybrid structural parts can realize the combination of mechanical properties and physical and chemical properties of different materials. Currently, existing extrusion processes for producing hybrid st...

AI Technical Summary

Problems solved by technology

Among them, the profiles produced by discontinuous co-extrusion cannot be continuously reinforced; the co-extruded billet is the inner and outer package of two materials, which requires additional processing and manufacturing before extrusion, which is cumbersome and expensive to produce; the co-extruded fiber billet , it is necessary to uniformly integrate a large number of fine fibers into the interior of the billet when manufacturing the billet, which is difficult to manufacture and high in cost, and the mold wear is serious during extrusion

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