Uporovno bradavično varjenje žice na kontaktni element

Ogrič, Jan (author), Klobčar, Damjan (mentor), Trdan, Uroš (comentor)

Zaključna naloga obravnava optimizacijo odstranjevanje izolacijske zaščite iz bakrene žice in varjenje žice na kontaktni element pri uporovnem bradavičnem varjenju. Za lažje razumevanje so najprej predstavljene osnove bradavičnega varjenja. Izdelana je bila parametrična analiza, pri kateri smo spreminjali glavne parametre pri odstranjevanju izolacije z žice in kasneje varjenje žice na kontaktni element. Izdelane vzorce smo vizualno pregledali ter jim izmerili električno upornost. Z optimizacijo parametrov smo ugotovili, da iz 0,180 kW vnesene energije v času 450 ms uspešno odstranimo izolacijo z žice. Pri varjenju pa smo ugotovili, da so optimalni parametri varjenja za uporabljeno žico in kontaktni element naslednji: sila pritiska na žico z 12 N, jakost varilnega toka je 180 A in čas varjenja je 440 ms. Pri varjenju ni prišlo do uparjanja, nastane pa zvarni spoj, ki ima v območju varjenja v celoti odstranjeno izolacijo. Poleg tega ima izmerjeno električno upornost blizu nominalne vrednosti, ki je 3,6 ?.

• Language: Slovenian
• Keywords: varjenje, odstranjevanje izolacijske zaščite, uporovno, bradavično varjenje, parametri bradavičnega varjenja, merjenje upornosti, vizualna kontrola
• Work type: Bachelor thesis/paper
• Typology: 2.11 - Undergraduate Thesis
• Organization: FS - Faculty of Mechanical Engineering
• Place of publishing: Ljubljana
• Publisher: [J. ogrič]
• Year: 2023
• Number of pages: XX, 47 str.
• PID: 20.500.12556/RUL-144611
• UDC: 621.791.762(043.2)
• COBISS.SI-ID: 144271619
• Publication date in RUL: 03.03.2023

Secondary language

• Language: English
• Title: Resistance projection welding of wire to contact element

Abstract

The thesis deals with the optimization of the removal of the insulation protection from the copper wire and the welding of the wire to the contact element in resistance nipple welding. For easier understanding, the basics of nipple welding are presented first. A parametric analysis was made, in which we changed the main parameters when removing the insulation from the wire and later changing the wire to the contact element. The manufactured samples were visually inspected and their electrical resistance measured. By optimizing the parameters, we found that we could successfully remove the insulation from the wire from 0.180 kW of input energy in 450 ms. When welding, we found that the optimal welding parameters for the used wire and contact element are as follows: the pressure force on the wire is 12 N, the welding current is 180 A and the welding time is 440 ms. During welding, no evaporation occurs, but a weld joint is formed, which has the insulation completely removed in the welding area. In addition, it has a measured electrical resistance close to the nominal value of 3.6 Ω

• Keywords: welding, removing insulation from wire, projection welding, parameter for projection welding, resistance measurment, visual control