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扁挤压筒是挤压大型、扁宽、薄壁、复杂空心和实心型材必不可少的重要工具，也是大型扁宽薄壁型材生产的关 键技术之一。扁挤压筒的设计和制造属高新技术范畴，在我国尚属空白，国外也在研制之中。在充分分析世界各国的有 关资料之后，结合我国的具体情况，利用我国现有的８０ＭＮ挤压机上的Φ６５０ｍｍ圆挤压筒的外套和中套，对扁挤压筒 内套的结构设计、材料选择、强度计算以及加工制造工艺和装配工艺进行了系统的研究，改装成了６７０ｍｍ×２７０ｍｍ ×１６００ｍｍ扁挤压筒，经试挤获得了良好的效果，为我国研制扁挤压筒积累了经验。
Flat extrusion tube extrusion is large, flat width, thin-walled, complex hollow and solid profiles essential tool, but also large flat-width thin-walled profile production of one of the key technologies. Flat extrusion tube design and manufacture of high-tech areas, is still a blank in our country, foreign countries are also under development. After fully analyzing the relevant information of all the countries in the world and combining with the specific conditions of our country and utilizing the jacket and sleeve of Φ650mm round extrusion cylinder on the existing 80MN extruder in our country, the structural design, material selection of the inner sleeve of the flat extrusion cylinder , Strength calculation and manufacturing process and assembly process were systematically studied, and converted into a 670mm × 270mm × 1600mm flat extrusion cylinder. Good results were obtained by trial extrusion and accumulated experience for the development of flat extrusion cylinder in China.