Unequal-channel angular self-bending extrusion die and method for designing and manufacturing the same and extruding method thereof
AssigneeShandong University of Technology
InventorsGuangming Zhu, Fanlei Min, Zheng Chang, Huiping Liu
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Abstract
Provided are an unequal-channel angular self-bending extrusion die and a method for designing and manufacturing the same and extrusion method thereof and includes following steps: designing a symmetrical streamlined extrusion die based on sine function; making the medial axis of the die cavity of the symmetrical streamlined extrusion die twisted and deformed on a certain plane; establishing the die cavity wall surface equation of the unequal-channel angular self-bending extrusion die; setting a working belt structure downstream the die cavity of the unequal-channel angular self-bending extrusion die.
Claims15
A method for designing an unequal-channel angular self-bending extrusion die, comprising steps of:
- designing a symmetrical streamlined extrusion die based on a sine function, wherein wall surfaces of two sides of a die cavity of the extrusion die are symmetrical streamlined;
- making a medial axis of the die cavity of the symmetrical streamlined extrusion die twisted and deformed in a certain plane, to form an arched curve, wherein the arched curve remains symmetrical along an extrusion direction, has no offset at both ends of the curve and is tangent to an axis;
- establishing a wall surface equation of the die cavity of the unequal-channel angular self-bending extrusion die according to a medial axis of the arched curve;
- and
- setting a working belt structure behind the die cavity of the unequal-channel angular self-bending extrusion die, with a wall surface of the working belt structure parallel to the extrusion direction.
Dependencies are inferred from the claim text.