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有效摩擦挤压是利用挤压筒与坯料间摩擦力挤压的一种工艺方法。这个摩擦力与金属流动的方向一致,有效地促进了挤压筒内壁区的金属流动,使金属受到压缩,向模口流动。这样,在模口区内存在静压力,它在金属挤压过程中始终起作用。在普通的挤压中,金属变形特别是铝合金变形的不均匀性,使挤压制品在长度方向和截面上的机械性能不一致,从而导
Effective friction extrusion is the use of extrusion tube and blank friction between a process. This friction and metal flow in the same direction, effectively promote the inner wall of the extrusion tube metal flow, the metal is compressed, to the die flow. In this way, there is static pressure in the die area, which is always active during metal extrusion. In ordinary extrusion, the deformation of the metal, especially the deformation of the aluminum alloy, causes the mechanical properties of the extruded product in the longitudinal direction and the cross-section to be inconsistent,