Comprehensive improvement of the surface quality of the diesel engine piston

An important requirement for the material for pistons concerns its parameters at different temperatures of piston operation at different ambient temperatures. The study uses penetration tests in quality control of diesel engine pistons used in passenger cars. The purpose of the tests was to determine, with the use of traditional quality management tools, the sources of incompatibility of castings detected in eddy current testing. The aim of the analysis was to reduce the number of non-compliant products or to eliminate them altogether.