Estudo investigativo da viabilidade de um fluido lubrificante para estampagem em aço BH220

Abstract

This thesis aims to study three commercial lubricating fluids and extract the best results in order to enable the production of an optimized lubricating fluid to be manufactured on a large scale, with specifications and characteristics tailored for the stamping of bake hardening (BH220) steel with a thickness of 0.7mm for use in Class A panels in the automotive industry. The stamping tests were conducted on a hydraulic press with a constant tool geometry (cylindrical punch), varying the type of commercial lubricant used, including two synthetic and one vegetablebased lubricant. Investigative studies were performed on stamped material specimens under the action of the commercial lubricants, measuring roughness coefficients and friction coefficients, as well as material studies to obtain characteristics of the studied fluids such as wettability and contact angle. One of the synthetic fluids was chosen, and this work will serve as the basis for the manufacturing process of a new optimized lubricant for stamping. This initiative was motivated by the market's need for lightweight panel manufacturing in the automotive industry, particularly for future lightweight vehicle requirements.