Composite shaping method of metal-based layer-shaped composite board and press forming mold thereof

Abstract

The invention discloses a compound molding method for a metal substrate layer shaped composite plate and an extrusion forming mould thereof. The method comprises the following steps: putting a heated metal blank into an extrusion cylinder of the extrusion forming mould, and pressing the metal blank to generate plastic deformation under the action of the pressure and become a plate band shape to be extruded out after passing through a plate forming passage; simultaneously, introducing a surface plate through a surface plate of a female die, extruding the plates from a die by the drive of a forming plate, and welding the plates when passing through a composite compression joint passage of the die to form a layered composite plate. The technical proposal has simple process, can effectively improve welding quality among the junction surfaces of the layered plates, and reduce the requirement on heating atmosphere.

Description

technical field [0001] The invention relates to the processing and forming technology of metal-based composite materials, in particular to a composite forming method of metal-based composite plate strips and an extrusion molding die for implementing the method. Background technique [0002] Metal copper and aluminum have good electrical and thermal conductivity, so they are widely used in electric power and heat transfer engineering. The world's aluminum resources are relatively abundant, but copper resources are relatively scarce. Substituting aluminum for copper is an important strategy for saving copper resources. However, aluminum has poor performance in welding, arc extinguishing, and wear resistance. Therefore, it is difficult to directly replace copper with aluminum in many occasions, such as switches, heat sinks, and transition plates. At this time, aluminum-copper composite materials can play an important role. role. At present, aluminum-copper composite materials...

AI Technical Summary

Problems solved by technology

The above-mentioned composite processes all have defects in varying degrees: the combination of aluminum and base metal copper in the spraying process is poor, and the strength of the composite metal is low; the complex process of rolling and annealing increases the cost of the product, and the cold rolling process The reduction rate of the second time is high, and the load-carrying capacity of the rolling equipment is high; the cold-rolling and hot-rolling composite process has a low oxidation and coloring temperature of copper (180°C), so the heating temperature of the copper strip cannot be very high, which limits The combined effect brought by heating before rolling is eliminated, and the process operation is complicated and the product cost is increased due to the need for secondary heating

[0004] Apart from the spraying and rolling process, there is currently no other method for preparing aluminum-copper composite sheets

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