Effect of Annealing on The Forming Ability for Brass Sheet

Abstract

This research deals with the effect of annealing on the cold forming of brass sheets. In this research two methods were chosen one of them is an experimental work and the other is a numerical work. The material used is a brass sheet. Sets of specimens are prepared and treated to perform the tests which include tensile test, forming process, and the microscopic examination. The forming is performed in the cold state for blanks using a die with a hemispherical punch to produce drawn parts like cups. These parts are varying in their depths according to the condition of heat treatment (annealing). It was noticed from the experimental results that the annealing at a temperature (of 600°C) has a major effect on the forming ability of the sheet; also using two steps of cold forming with intermediate annealing at the mentioned temperature can produce deeper drawn part as compared with that obtained by one stage. A numerical simulation had been made for the forming process using the finite element method (FEM) and the commercial software (ANSYS9) to confirm the experimental work The numerical results show an agreement with the experimental results.