Napovedovanje dobe trajanja zvarnih spojev za različne vrste protikorozijskih zaščit

Menič, Boris (author), Klemenc, Jernej (mentor)

Delo obravnava problem vpliva protikorozijskih zaščit na visoko trdnostna jekla pri dinamičnem obremenjevanju. Opisani so tipi korozije in njihovi vplivi ter najpogostejše protikorozijske zaščite jekel v avtomobilski industriji. Cilj je bil ugotoviti ali protikorozijska zaščita z galvanskim cink-nikljanjem in barvanje s kataforezo vpliva na dobo trajanja zvarjencev. Z utrujanjem vzorcev smo ugotovili, da obstaja vpliv Zn-Ni zaščite, medtem ko je vpliv kataforeze zanemarljiv. Dobo trajanja jekel z različnimi protikorozijskimi zaščitami smo napovedovali tudi s programom FEMFAT.

• Language: Slovenian
• Keywords: dinamična trdnost, visoko trdnostna jekla, Wöhlerjeva krivulja, galvansko cink-nikljanje, elektroforetično barvanje
• Work type: Master's thesis
• Typology: 2.09 - Master's Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Publisher: [B. Menič]
• Year: 2018
• PID: 20.500.12556/RUL-102869
• UDC: 620.1:539.3(043.2)
• COBISS.SI-ID: 16425243
• Publication date in RUL: 09.09.2018

Secondary language

• Language: English
• Title: Estimating durability of dynamically loaded weld joints with anticorrosion protection

Abstract

This master thesis discusses an impact of the anti-corrosive protection on dynamically loaded high-strength steel. The main types of corrosion, its effects, and most common anti-corrosive protection of steel in the automotive industry are described. The main objective was to see if the zinc-nickel electrodeposited coating and the cataphoresis coating affect the dynamically loaded welded specimens. The conclusion was that there is an effect of the zinc-nickel coating, however, the cataphoretic coating has no effect. The duration of the steel with various anti-corrosive protection has been predicted by the FEMFAT software.

• Keywords: fatigue strength, high strength steels, Wöhler curve, zinc-nickel electrodeposition, electrophotetic painting