27 KB2828 KB19 KB200020242012Gostimirović, MarinHadžistević, MiodragPejić, VlastimirSekulić, MilenkoTurisova, Renataletnik:46številka:6str. 601-606ISSN:1580-2949COBISSID:955818URN:URN:NBN:SI:doc-87R0PJRIenInštitut za kovinske materiale in tehnologijeMateriali in tehnologijematerialimehanske lastnostimikrostrukturaobdelovalnostrezanjerezkanjeInfluence of material properties on the machinability in face milling| Vpliv lastnosti materiala na obdelovalnost pri čelnem rezkanju|A workpiece material and its mechanical properties, chemical composition and microstructure have a significant influence on the material machinability in machining, i.e., on the machining-process output properties: productivity, machined surface quality and machining accuracy. Machinability improves when equal conditions are achieved: long tool life, increased productivity, better machined surface quality, lower forces and cutting temperatures, as well as favourable chip type. Cutting-process planning requires reliable cutting-force estimates, which can be currently obtained only from process-dependent machinability databases. This paper described research in the field of cutting forces in the face milling of eight different materials: steels C45 and C60, gray irons GJL150 and GJL200, silumine AlSi12Cu.00, copper EK2-Cu.00, bronze CuSn12.01 and brass CuZn40Pb.05. The results showed that the hardness, tensile-strength values, chemical composition and microstructure of a workpiece material have a significant influence on the main cutting force, and thereby on the cutting energy in machiningMaterial obdelovanca in njegove mehanske lastnosti, kemična sestava in mikrostruktura pomembno vplivajo na obdelovalnost materiala pri obdelavi ter na zmogljivosti procesa obdelave, kot so: produktivnost, kakovost obdelane površine in natančnost obdelave. Obdelovalnost se izboljša, če so zagotovljeni enaki pogoji. To omogoča dolgo trajnostno dobo orodja, večjo produktivnost, boljšo kakovost obdelane površine, manjše sile in nižje temperature pri rezanju ter ugodno obliko ostružkov. Načrtovanje rezalnega procesa zahteva zanesljivo oceno sil pri rezanju, kar je sedaj mogoče doseči le z bazami podatkov procesno odvisne obdelovalnosti. Članek obravnava raziskavo na področju sil pri čelnem rezkanju osmih različnih materialov: jekel C45 in C60, sivih litin GJL150 in GJL200, silumina AlSi12Cu.00, bakra EK2-Cu.00, brona CuSn12.01 in medenine CuZn40Pb.05. Rezultati so pokazali, da imajo trdota, natezna trdnost, kemična sestava in mikrostruktura materiala obdelovanca pomemben vpliv na sile pri rezanju in s tem na rezalno energijo pri obdelaviTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaInštitut za kovinske materiale in tehnologije