PT Journal AU Kurylo, P Papacz, W Tertel, E TI The Importance of a Surface Layer of a Cast Iron Casting in the Design of Technological Processes SO Acta Mechanica Slovaca PY 2015 BP 12 EP 16 VL 19 IS 2 DI 10.21496/ams.2015.010 DE Surface layer; reaction zone; transition zone; hardness AB The paper defines the scope and character of the surface layer of castings made of selected types of cast iron with special consideration of on spheroidal cast iron. The study also showed that on the basis of the distribution of hardness along the casting core, it is possible to define the distribution of structures and the reach of the surface layer of a cast iron casting. ER