Heat treating process of workpiece TS.18- DT.83

Tema diplomskog rada je postupak toplinske obrade strojnog dijela TS.18-DT.83. U prvom dijelu rada opisan je pojam čelika te komponente koje su osnova svakoga čelika. U sljedećoj cijelini obrađen je pojam toplinske obrade, dijagram stanja, mikrostrukturalne promjene, utjecaj određenih kemijskih elemenata na izgled dijagrama stanja te TTT dijagrami. Središnja tema diplomskog rada je toplinska obrada poboljšavanje. Prije samog kraja opisani su pojmovi tvrdoća tj. načini na koji se ispituju. Krajnji dio opisuje toplinsku obradu poboljšavanja kroz praktični primjer odnosno na strojnom dijelu TS.18-DT.83 je proveden proces poboljšavanja na kojem je postignuta granica razvlačenja 1000 N/mm2.Main topic of this graduate thesis is The heat treatment process of the machine part TS.18-DT.83. In first part of the thesis is described the notion of steel and the components that are the basis of each steel. In next part we get to know the term of heat treatment, phase diagram, microstructural changes, the influence of certain chemical elements on the appearance of the state diagrams and TTT diagrams. The core part of this thesis is heat treatment quenching and tempering. Before very end are described terms of hardness, ie. the ways in which they are examined. The final part describes thermal enhancement treatment througt a practical example ie. on the machine part TS.18-DT.83 was conducted an quenching and tempering process on which was achieved the stretching limit of 1000 N / mm2