Extruding-bending integral forming method for magnesium alloy profiles

Abstract

The invention relates to a technical method used for extruding-bending-integral forming of a magnesium alloy sectional material, pertaining to the technical field of plasticity processing. A set of three-wheel roll bending device is arranged near a discharge port of the original horizontal extruding machine, magnesium alloy ingot blanks are molded into the sectional material through hot extrusion, the sectional material is put into the roll bending mechanism directly before being cooled, bending moment is carried out to the sectional materials by the three roll wheels that are arranged on a same surface so as to achieve bending and molding, and the movement and position of the roll wheels are controlled to gain a bending angle and a bending radius that are required. The invention can realize the extrusion, bending and continuous molding of the magnesium alloy sectional material under the condition of only heating original ingot blanks, thereby having high production efficiency and low cost.

Description

technical field [0001] The invention relates to a forming method in the technical field of plastic processing, in particular to an extrusion-bending integrated forming method for a magnesium alloy profile. Background technique [0002] Magnesium alloy, as the lightest metal structural material so far, is gradually being used in the fields of machinery, automobiles, electronics and aerospace, showing great application prospects. At present, the magnesium alloy parts actually used are mainly die castings. Due to the inherent shortcomings of the casting process, it cannot meet the strength and size requirements of various occasions. The deformed magnesium alloy has compact structure, flexible size, and comprehensive mechanical properties. Excellent and many other advantages, can meet the use requirements of a variety of structural parts, so the development of wrought magnesium alloy and its processing technology is of great significance. Commonly used deformation processing te...

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Problems solved by technology

[0003] After searching the literature of the prior art, it was found that a European invention patent (patent application number: EP0706843B1, Method and device for the production of curved workpieces, name: curved pieces) was applied for a process and equipment for making automobile frame curved pieces production method and equipment), the method is that the extruded profile is directly affected by the guide wheel with a certain movement track, the front end of the profile moves together with the guide wheel, and the end of the profile is constrained by the edge of the extrusion die outlet to form a For bending parts, since the bending deformation mainly occurs at the exit of the extrusion die, the wear of the die is very serious. In addition, due to the high strain rate during bending deformation, it is difficult to ensure the shape of the section of the bending part for thin-walled cavity profiles.

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