公开(公告)号：WO1981003441A1

公开(公告)日：1981-12-10

申请号：PCT/JP1981000114

申请日：1981-05-26

Applicant: SUMITOMO LIGHT METAL IND LTD ,  HAYASHI H ,  MOHRI E

Inventor： SUMITOMO LIGHT METAL IND LTD

IPC: B21C35/00

CPC classification number: B21C35/04 ,  B21C23/205 ,  B21C25/02 ,  B21C35/06

Abstract: Indirect extrusion process for a metal billet. In indirect extrusion by a free die process, a surface skin of the billet is removed simultaneously with the extrusion process by using a two stage die (8), so that the container cleaning cycle after extrusion becomes unnecessary. A shear support (3) is provided fixed separately from said container (2) on the extrusion ram (4) side, and after the extrusion cycle is complete, a shear (shearing device) (14) or said shear support (3) shears off and removes a discard unitarily and tightly stuck in said die (8). This method can shorten the extrusion cycle, and damage to essential parts of the extrusion machines can be avoided.

Abstract translation: 金属坯料的间接挤压工艺。 在通过自由模具的间接挤出中，通过使用两级模具（8），与挤出工艺同时移除坯料的表面表皮，使得挤出后的容器清洁循环变得不必要。 剪切支撑件（3）在挤压柱塞（4）侧与所述容器（2）分开设置，并且在挤出循环完成之后，剪切（剪切装置）（14）或所述剪切支撑件（3）剪切 关闭并且一体地且紧紧地卡在所述模具（8）中的废弃物。 该方法可以缩短挤出循环，可以避免对挤出机的主要部件造成损坏。