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FME Transactions
2013, vol. 41, br. 2, str. 130-137
jezik rada: engleski
vrsta rada: neklasifikovan

Identifikacija robustnih uslova za minimizaciju zone toplotnog uticaja i šljake kod CO2 laserskog sečenja
Univerzitet u Nišu, Mašinski fakultet

e-adresa: madic@masfak.ni.ac.rs

Projekat

Istraživanje primene savremenih nekonvencionalnih tehnologija u proizvodnim preduzecima sa ciljem povecanja efikasnosti korišcenja, kvaliteta proizvoda, smanjenja troškova i uštede energije i materijala (MPNTR - 35034)

Sažetak

U ovom radu predstavljena je Tagučijeva optimizaciona metodologija za identifikaciju robustnih uslova u cilju minimizacije zone toplotnog uticaja i šljake kod SO2 laserskog sečenja AISI 304 nerđajućeg čelika. Eksperiment je planiran i izvršen na osnovu standardnog Tagučijevog ortogonalnog niza L27 u kome su četiri parametra laserskog sečenja kao što su snaga lasera, brzina sečenja, pritisak pomoćnog gasa i pozicija fokusa menjani na tri nivoa. Na osnovu analize varijanse, srednjih vrednosti i grafika interakcija identifikovani su značajni parametri kao i optimalna kombinacija njihovih nivoa. Rezultati su pokazali da je pozicija fokusa najznačajniji parametar koji utiče na širinu zone toplotnog uticaja i visinu šljake, dok se uticaj pritiska pomoćnog gasa može zanemariti. Utvrđeno je da su rezultati Tagučijeve predikcije pod optimalnim uslovima laserskog sečenja u dobroj saglasnosti sa rezultatima konfirmacionog eksperimenta.

Ključne reči

CO2 laser cutting; Taguchi optimization methodology; heat affected zone; burr height

Reference

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