Duboko izvlačenje lima od aluminijumske legure AlMg4,5Mn pri nemonotonom deformisanju sa promenljivom silom držanja

Abstract

The paper gives a part of experimental results obtained on a special laboratory computer device, which make possible both control of variable holding force and measurement of significant parameters. Used are cylindrical part geometry and two types of plastic forming process: single phased (monotonous) and two phased (nonmonotonous) with stretching in first phase. Tribologic conditions (besides variable holding force) defined are in tree ways: dry surfaces, oil application, oil and foil application. Used variable holding force is so called combined due to its decrease increase character. Improve deep drawing process performances to its aim. Process parameters are observed through: wrinkle/fracture limit diagrams, both holding and drawing forces, main sheet plain strain distributions, thinning strain distributions, drawing depth, appropriate estimates according to limit formability etc.