Manufacture and bench qualification of a road vehicle steering knuckle produced by pressing an aluminium alloy in the semiliquid state

Abstract

Road vehicle steering knuckles in aluminium alloy AS7U3G rheocast in the semiliquid state were pressed and subjected to a series of tests to determine the mechanical and metallurgical characteristics of this material. Bench qualification tests were then run in the form of fatigue tests simulating the most severe condition envisaged in the design stage. The results showed that the design dimensions were satisfactory in relation to the observed strength of the components.