Effect of die approach angle and drawing speed on the quality of 4043 aluminum alloy wire
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Abstract
The purpose of this research is to study the effects of the die approach angle size and the drawing speed on the quality of 4043 aluminum alloy wire. Initial specimens, with a diameter of 2.0 millimeters, were tested by drawing through the dies with 3 different die approach angle sizes: 16°, 18°, and 20°. The insert die was made of tungsten carbide grade K20 (ISO) and inserted into the casing draw made of material graded D2 (AISI). The design defined that the die characteristic conformed to the ISO2084 standard. The drawing speed values studied were in 3 levels: 0.10, 0.25 and 0.40 meter/second. While forming, Renoform MZA30 lubricant was used to obtain a finished wire diameter of 1.9 millimeters. In the conducting research, it was the application of experimental design by 32 full factorial experiment. The results showed that the drawing force was proportional to the die approach angle but inversely proportional to the drawing speed. Drawing an initial workpiece through a die with a smaller die approach angle yields a better mean surface roughness of the finished wire than drawing through a die with a large die approach angle. Drawing through a die with a large die approached angle results in redundant plastic deformation which increased residual stress in the wire, thereby increasing the strength of the finished wire, especially for wire drawings that use high drawing speed.
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