牵引挤压就是在水压机上增设牵引装置,边挤压边牵引制品,避免压出的型材出现波浪、扭拧、弯曲等缺陷,进而达到减少拉伸工序、降低废品率和提高产品质量的目的,特别对于断面宽薄而难以挤压合格的镁合金型材,牵引装置更有其特殊的意义。 Traction extrusion is to add a traction device on the hydraulic press, while squeezing the edge of the traction products, extrusion profiles to avoid the occurrence of wavy, twisting, bending and other defects, thus reducing the drawing process to reduce the rejection rate and improve product quality purposes, Especially for the section of the thin and difficult to squeeze qualified magnesium alloy profiles, traction device has its special significance.