Englisch | Englisch The film shows the process of chip formation on a polished and etched or etch-polished specimen of GG 20 lamellar cast iron. The formation of tear chips is typical of this material whose perlitic structure is shot through with graphite lamellae. Despite increasingly plastic deformation of the material at increasing cutting speeds with distinctly incipient build-up at the cutting edge, the chips formed in the cutting of this material retain nevertheless their irregular tear chip character. |