Keywords
single-point incremental forming
SPIF
work hardening
Zn-Cu-Ti alloy
How to Cite
Abstract
Single-point incremental forming (SPIF) is a method of forming sheet metal components in a variety of industries. SPIF involves the gradual deformation of the sheet metal using a pin tool. In this article, SPIF was used to form a Zn-Cu-Ti alloy square pyramid drawpieces with a wall angle of 60°. Zn-Cu-Ti alloy sheets are characterised by strong anisotropy associated with the hexagonal close-packed structure. The aim of the study was to determine the effect of SPIF process parameters on the strength properties of the drawpieces. Analysis of variance was used to statistically analyse the effect of SPIF process parameters on the yield strength, ultimate tensile strength and elongation of workpiece material after forming. Based on the analysis of variance, it was found that statistically significant parameters influencing SPIF-induced properties of drawpiece material (yield strength, ultimate tensile strength and elongation) were workpiece orientation, orientation of samples taken for testing in relation to the sheet rolling direction and tool rotational speed. Step size significantly affects the yield strength and ultimate tensile strength of drawpiece material.
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