挤压加工是把材料装入模具体内,通过挤压制出与模孔断面形状相同的长形工件的加工方法。特别适用于断面形状复杂的工件,例如制作铝窗型材和装有热交换用翅片的管子等。对那些在常温下挤压加工困难的材料,需要加热到一定的温度。在通常条件下,非常脆而不能塑性变形的材料,在适当的温度和压力下也能有很大的延展性。因为挤压加工时,变形 Extrusion processing is the material into the mold body, made by extrusion and die hole cross-section the same shape of the workpiece processing methods. Particularly suitable for the cross-sectional shape of the workpiece, such as the production of aluminum profiles and equipped with heat exchange tubes and other fins. For those at room temperature extrusion processing difficult materials, need to heat to a certain temperature. Under normal conditions, materials that are very brittle and not plastically deformable can also be very ductile at appropriate temperatures and pressures. Because of extrusion processing, deformation