DEFORMATIONS AFTER HEAT TREATMENT AND THEIR INFLUENCE ON CUTTING PROCESS

This paper deals with the influence of heat treatment on the deformation of parts and the following machining process. The regime of heat treatment significantly affects such aspects of material as structure, hardness and induced stress. Different process of heat treatment results in different deformation of parts and changes considering their dimensions. All these aspects are connected with the consecutive cutting operations such as grinding or hard turning, their stability, precision of produced parts, etc. Deformation of parts is also connected with the structure of material before heat treatment, placement in the furnace, regime of heat treatment and stress distribution around the parts. The results of the experimental study presented in this paper illustrate the connection between different heat treatment regimes and the following processing of parts.Original Abstract: Ovaj se clanak bavi utjecajem toplinske obrade na deformacije dijelova i strojnom obradom koja slijedi. Rezim toplinske obrade znatno utjece na takva gledista materijala kao sto je struktura, tvrdoca i inducirano naprezanje. Razlicit proces toplinske obrade rezultira razlicitim deformacijama dijelova i promjenama s obzirom na njihove dimenzije. Sva su ova gledista povezana s uzastopnim operacijama rezanja, kao sto je brusenje ili grubo tokarenje, njihovom stabilnosti, preciznosti proizvedenih dijelova, itd. Deformacija dijelova takoder je povezana sa strukturom materijala prije toplinske obrade, postavljanjem u peci, rezimom toplinske obrade i raspodjelom naprezanja oko dijelova. Rezultati ovog eksperimentalnog istrazivanja prikazani u ovom clanku pokazuju povezanost izmedu razlicitih rezima toplinske obrade i obrade dijelova koja slijedi.