The invention belongs to the technical field of material
extrusion, and discloses a parallel double-channel ECAP-Conform method and device. The device comprises bolts,
extrusion wheels with rectangular grooves at the edge, compaction wheels, upper dies, lower dies, material blocking blocks, an
extrusion die and the like; a strip material or a rod material with a certain length is used as a prefabricated blank material; the under the action of three-surface active
friction force generated by the blank material making contact with the rectangular grooves at the edges of the extrusion wheel I andthe extrusion wheel II, the blank material rotates
clockwise or anticlockwise through the quarter circle along with the wheel; a material blocking block which protrudes into the rectangular grooves at the edges of the extrusion wheels is used for blocking the blank material; and the blank in the rectangular cavity is forced to rotate through the channel cross angles of the two ECAP under the shearing action, so that the two shearing deformations are completed. According to the method and device, two shearing deformations are completed in a continuous equal-channel cross angle extrusion process, the two shearing deformations mainly act on the two surfaces of the blank correspondingy, the ECAP deformation of the path C is equivalent to the two shearing deformations, the production efficiency is high, and the structure performance of the extruded material is more uniform.