نبذة مختصرة : U ovom diplomskom radu odrađena je optimizacija parametara laserskog zavarivanja čelika P92, čija je primjena relativno specifična s obzirom na karakteristike kao što su velika toplinska otpornost, otpornost na oksidaciju, velika čvrstoća i tvrdoća te mu je glavna primjena u elektranama s fosilnim gorivima. U prvom dijelu rada detaljno je objašnjen rad lasera, osnovni dijelovi, princip rada i glavna podjela lasera. Također, detaljno su opisani laseri koji se najčešće koriste kao što su: Nd:YAG, CO2, rubinski, He-Ne, dušikov i drugi laseri. U drugom dijelu rada (eksperimentalnom) provedena je Taguchi temeljena siva relacijska analiza kako bi se optimirali parametri zavarivanja, određen je S/N omjer za pojedine parametre i geometrijske karakteristike te je naposljetku izvedena analiza varijance (ANOVA) . ; In this work, the optimization of laser welding parameters of P92 steel was performed, which application is relatively specific considering its characteristics such as high heat resistance, oxidation resistance, high strength and hardness, and its main application is in power plants with fossil fuels. In the first part of the work, the operation of the laser, the basic parts, the principle of operation and the main division of the laser are explained in detail. Also, the most commonly used lasers are described in detail, such as: Nd:YAG, CO2, ruby, He-Ne, nitrogen and other lasers. In the second part of the work (experimental), a Taguchi gray relational analysis was performed in order to optimize the welding parameters, the S/N ratio was determined for individual parameters and geometric characteristics, and finally an analysis of variance (ANOVA) was performed.
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