EXTRUDING DIE FOR MANUFACTURING SEMI-HOLLOW SHAPED MATERIAL

摘要

PROBLEM TO BE SOLVED: To provide an extruding die for manufacturing a semi-hollow shaped material, with which product quality is improved.;SOLUTION: The extruding die 1 includes a forming hole 3, a tong forming part 22, a tong opening forming part 23, a welled chamber 51, metal holes 55 and bridges 53. In the state of a front view, a distance Da from one end closed part 35a on the end face on the upstream side of the forming hole 3 to the wall face 54 of a bridge is set approximately equal to a distance Db from the other end closed part 35b of the forming hole 3 to the wall face 54 of a bridge.;COPYRIGHT: (C)2012,JPO&INPIT