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采用弹性有限元法对８０ＭＮ挤压机用大型扁挤压筒的结构与尺寸进行了初步设计，获得了能满足强度条件的基本尺寸和相对热装过盈量范围：扁挤压筒采用三层过盈配合结构形式，整体外径１８００ｍｍ，长１６００ｍｍ；内孔宽度６５０～７００ｍｍ，高度２４０～２５０ｍｍ；内层套的外径８８０～９５０ｍｍ，中层套的外径１３００～１５００ｍｍ；各层相对热装过盈量为２．０～２．６‰
The structure and size of large flat extrusion cylinder for 80MN extruder were preliminarily designed by using the elastic finite element method. The basic dimensions and the relative hot-fitting interference margin were obtained according to the strength conditions: the flat extrusion cylinder adopted three layers The overall outer diameter of 1800mm, length 1600mm; inner width of 650 ~ 700mm, height 240 ~ 250mm; Interference is 2.0 ~ 2.6 ‰