Magnesium alloy asymmetric continuous large-deformation extrusion machining mold

Abstract

The invention discloses a magnesium alloy asymmetric continuous large-deformation extrusion processing die, and belongs to the field of non-ferrous metal plastic forming. The asymmetric continuous large-deformation extrusion processing die comprises an upset-extruding cavity at the upper part and an extruding cavity at the lower part, and a forming channel hole can be designed to be in an asymmetric type. The extrusion deformation of one side of a casting material is large while the extrusion deformation at the other side is small, so that the deformation is intensified. Die cores are detachable, and various types of die cores which can be suitable for different sizes are designed, so that different production requirements can be met. After one casting material is deformed, the casting material can be quickly replaced with the next casting material, so that continuous production is realized. The die is mainly used for realizing continuous extrusion forming of a sheet of a magnesium alloy sheet-shaped casting material, and the magnesium alloy sheet-shaped part which is uniform in structure and optimized in performance can be obtained through the processing technology.

Description

technical field [0001] The invention belongs to the field of non-ferrous metal plastic forming. Background technique [0002] As an important emerging engineering material, magnesium alloy has received more and more attention. But the existing use situation is far from exerting its potential advantages, and the actual industrial application is very small. The crystal structure of magnesium alloy is a close-packed hexagonal structure, and its plastic formability at room temperature is poor, so it is greatly restricted in practical applications. Magnesium alloy products are divided into cast magnesium alloys and wrought magnesium alloys. Wrought magnesium alloys mainly refine the structure and improve performance through thermal deformation, such as rolling and extrusion. Compared with cast magnesium alloys, wrought magnesium alloys have better comprehensive mechanical properties, meet various requirements in industrial applications, and have more development potential and a...

AI Technical Summary

Problems solved by technology

Due to the small amount of deformation and limited grain refinement ability of the traditional plastic deformation process, problems such as uneven structure and even cracks are prone to occur. In order to obtain a magnesium alloy with a uniform and fine structure and optimized performance, multiple extrusions are usually required. , which leads to a substantial increase in production costs

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