| 摘要 |
A die for extruding a pipe includes a die head having an inlet for receiving and a bore for mixing an extrudate, a punch placed axially inside the die head, and a die cavity mounted at an outlet thereof. An outer surface of the die cavity includes flat surfaces at points of contact of a first adjustment structure which includes a plurality of flat end bolts perpendicular to each other positioned around the die cavity for adjusting position of the die cavity. The die further includes an extended orifice shaped as a thin walled tube formed around the orifice, and a second adjustment structure located at a tip of the orifice to distort the orifice for maintaining uniform flow of extrudate, and a plurality of segments are located around the orifice to uniformly distribute the load of the second adjustment structure on to the outer circumference of the orifice. |
