Varjenje titana in njegovih zlitin

Krušič, Matic (author), Klobčar, Damjan (mentor)

Zaključna naloga obravnava temeljne osnove titana in njegovih zlitin, fizikalne lastnosti in uporabo v industriji. Tematika zajema tudi stroškovno primerjavo z ostalimi materiali s podobnimi lastnostmi. Na kratko so opisane različne metode varjenja titana in njegovih zlitin. Zajeto je tudi celotno metalurško ozadje titanovih zlitin. Prav tako je zajeta pravilna predpriprava materiala pred samim varjenjem in pomembnost čistoče površine. Eksperimentalni del zaključne naloge zajema vpliv vodika na kakovost zvarnih spojev. Varjenje je potekalo po TIG postopku z uporabo 0 %, 2,2 % in pa 7 % prisotnega deleža vodika v argonu. Pretok zaščitnega plina je bil konstanten in nastavljen skozi celotni eksperiment na 9,3 l/min. Kakovost zvarnih spojev smo testirali z vizualno analizo, rentgenom, upogibnim testom in nateznim preizkusom. S pomočjo testov smo dokazali, da z večanjem vsebnosti vodika v internem plinu povečujemo krhkost zvarnih spojev.

• Language: Slovenian
• Keywords: titan, titanove zlitine, varilne metode, varilni procesi, TIG varjenje, kakovosti zvara
• Work type: Final paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [M. Krušič]
• Year: 2019
• Number of pages: XIV, 32 f.
• PID: 20.500.12556/RUL-112755
• UDC: 621.791.75:546.82(043.2)
• COBISS.SI-ID: 16965147
• Publication date in RUL: 12.11.2019

Secondary language

• Language: English
• Title: Welding of titanium and its alloys

Abstract

In this study, we discuss the fundamental basics of titanium and its alloys, physical properties and usage in industry. We discuss different welding methods of titanium and its alloys, the correct preliminary preparation of material before welding and the significance of cleanliness on the surface of material. In the experimental part of this study we examine the role of hydrogen in titanium alloy weldments. We used TIG welding process with different shielding gasses which consisted of 0 %, 2.2 % and 7 % of hydrogen presence in argon inert gas. Our flow of shielding gasses was constant and set on 9.3 l/min. The qualities of welds were tested with visual control, industrial radiology, along with bend and tensile test. Our tests results showed us that presence of hydrogen affects welds and make them fragile.

• Keywords: titanium, titanium alloys, welding methods, welding processes, TIG welding, weld quality