A double-sided variable channel strong-plastic variable extrusion method and forming die for a rib-like member

Abstract

The invention relates to a double-side variable channel strong plastic variable extrusion method of a rib plate type component and a forming mold, and belongs to the technical field of metal plastic machining. The blank is firstly subjected to two-time large-corner shearing deformation through the double-side variable channel structure on an extruding and pressing ring; and then repeated small-corner shearing deformation is achieved through a circular bead structure of a left female mold and a right female mold; and finally refined crystal grains are obtained, and a strong plastic variable extrusion forming of the rib plate component is realized through a large-plastic deformation quantity; and the forming mold comprises an upper mold assembly, a lower mold assembly, a combined female mold, an extrusion cylinder and the extruding and pressing ring, wherein the upper mold assembly is connected with the upper structure of a press machine, and the lower mold assembly is connected with thelower structure of the press machine. According to the method and the mold, the material crystal grains can be greatly refined, and the material crystal grains can cooperate with the forming mold toachieve one-step forming of the high-precision rib plate component; in addition, the male mold, the extrusion cylinder, the extruding and pressing ring, the combined female mold and other key parts ofthe forming mold can be replaced the size with the size according to the formed part, so that the forming of parts with different sizes can be realized, the plastic deformation quantity can be effectively controlled in the forming process, and the service life of the mold can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of metal plastic processing, and relates to an extrusion forming method and a mold for a rib-like member, in particular to an extrusion method and a forming mold for processing high-performance rib-like parts. Background technique [0002] Ultra-fine-grained metal components have excellent properties such as excellent strength and good plasticity, and are one of the important ways to promote the application of ultra-fine-grained metal materials and manufacture high-performance parts. Traditional hot forging and isothermal forging can refine the structure and eliminate casting defects while forming the metal, so as to obtain better mechanical properties. However, due to the uneven deformation and small amount of deformation, traditional thermal processing is difficult to obtain a relatively uniform ultra-fine grain structure, and it is still insufficient in fully exploiting the performance potential of materi...

AI Technical Summary

Problems solved by technology

However, due to the uneven deformation and small amount of deformation in traditional thermal processing, it is difficult to obtain a relatively uniform ultra-fine grain structure, and there are still deficiencies in fully exploiting the performance potential of materials.

Images