Process characteristics of aluminum extrusion

by:Zeyi     2021-07-02
Aluminum extrusion molding is to apply strong pressure to the metal billet placed in the die cavity (or extrusion cylinder), forcing the metal billet to produce directional plastic deformation and extruding from the die hole of the extrusion die to obtain the desired cross-section Plastic processing method for parts or semi-finished products of shape, size and certain mechanical properties. Classification of aluminum extrusion molding:   According to the flow direction of the metal plastic deformation, extrusion can be divided into the following categories:    Forward extrusion: During production, the direction of metal flow is the same as that of the punch. Back extrusion: During production, the direction of metal flow is the same as that of the punch. The direction of movement of the punch is opposite. Compound extrusion: During production, a part of the blank metal flows in the same direction as the punch, and the other part of the metal flows in the opposite direction of the punch. Radial extrusion: During production, the metal flows in the same direction as the punch The process characteristics of aluminum extrusion molding with a direction of 90 degrees:    1. During the extrusion process, the extruded metal can obtain a more intense and uniform three-dimensional compression stress state in the deformation zone than that of rolling and forging, which can give full play to The plasticity of the metal to be processed;   2, extrusion molding can not only produce rods, tubes, shapes, and wire products with simple cross-sectional shapes, but also profiles and tubes with complex cross-sectional shapes;   3, extrusion molding has great flexibility, only need Extrusion tools such as molds can be replaced to produce products of different shapes, specifications and varieties on one equipment. The operation of replacing extrusion molds is simple, fast, time-saving and efficient;   4. The precision of the extruded products is high, and the surface quality of the products is good. It also improves the utilization rate and yield of metal materials;   5, the extrusion process has a good effect on the mechanical properties of the metal;   6, the process flow is short, the production is convenient, one-time extrusion can be better than hot die forging or forming Integral structural parts with larger areas such as rolling, low equipment investment, low mold costs, and high economic benefits;   7, aluminum alloy has good extrusion characteristics, especially suitable for extrusion processing, and can be processed through a variety of extrusion processes and A variety of mold structures are processed.
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