Abstract
Drawing in one-piece drawing dies is the primary and usually single-option method of pressure metal treatment used in manufacturing of various wires both in Russia and abroad. One of the drawbacks of this method is complexity and almost no capability of achieving regular deformation across the wire cross-section. One of the options to solve this issue is using oval one-piece drawing dies. However, this issue is understudied. Mathematical modeling was used for comparative analysis of the deformed state and wire drawing forces in round and oval one-piece drawing dies. Two drawing routes were modeled for this purpose. In the first route, a round workpiece 16.00 mm in diameter was drawn through conventional round one-piece dies. In the second route, a round workpiece 16.00 mm in diameter was first drawn through an oval one-piece die and then through a round one-piece die. The equality of drawings in these routes were ensured over equal areas by passes. The final diameter in both routes was 12.80 mm. It has been shown that as compared to the conventional round die, drawing in a round die results in intensive treatment of central wire layers, which reduces deformation irregularity across the wire cross-section, and in this case the drawing force rises.
Keywords:
wire, drawing, one-piece drawing die, modeling, accumulated deformation degree, oval and round one-piece drawing die, drawing force, comparison.