diplomsko delo Visokošolskega strokovnega študijskega programa I. stopnje Strojništvo - Projektno aplikativni program
Marko Bahor (Author), Damjan Klobčar (Mentor), Drago Bračun (Co-mentor)

Abstract

Več-materialno oblikovno obločno navarjanje z žico je princip nanašanja kovin, kjer za pridobitev kakovostnih površin potrebujemo pravi pristop z uporabo več različnih modelov. S temi modeli, vpeljanimi za dodajna materiala iz malolegiranega in nerjavečega jekla, smo ustvarili ustrezne procesne parametre za ohranjanje enake višine navarov in njihovo prileganje parabolični obliki. Postopek aditivne proizvodnje je alternativa tradicionalnim obdelovalnim postopkom z odvzemanjem, s katerim izdelamo kompleksnejše oblike ter skrajšamo čas in stroške proizvodnje. Osredotočili smo se na izboljšanje kakovosti površine, kar je še posebej pomembno pri različnih materialih, kjer navarimo različne širine navarov. Pri iskanju optimalnega premika varilnega gorilnika, so se pri navarjanju prekrivnih navarov pojavile razlike med teoretičnimi izračuni in eksperimentalnimi ugotovitvami. Nanje so vplivale lastnosti uporabljenih materialov in površinska napetost v talini. Ugotovljeno je bilo, da je pomemben dejavnik, ki vpliva na navarjanje, tudi medvarkovna temperatura.

Keywords

diplomske naloge;navarjanje;oblikovno obločno navarjanje z žico;varjenje MIG/MAG;varilni parametri;optimalna razdalja prekrivanja;malolegirano in nerjavno jeklo;3D sestavljanje slik;

Data

Language: Slovenian
Year of publishing:
Typology: 2.11 - Undergraduate Thesis
Organization: UL FS - Faculty of Mechanical Engineering
Publisher: [M. Bahor]
UDC: 621.791.75:669.14:620.179.2(043.2)
COBISS: 193639683 Link will open in a new window
Views: 36
Downloads: 9
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Other data

Secondary language: English
Secondary title: Optimizing the overlap of layers from different materials to achieve flat surfaces
Secondary abstract: Multi-material wire and arc additive surfacing is a principle of metal deposition, where to obtain quality surfaces, we need the right approach using several different models. With these models, implemented for low-alloy and stainless steel, we have created adequate process parameters for maintaining the same height of the weld beads and their parabolic shape. The additive manufacturing method is an alternative to the traditional machining process with subtraction, with which we produce more complex shapes and reduce the time and cost of production. We focused on improving quality of the surface, which is especially important for dissimilar materials, where we weld different widths of welds. While experimenting the optimal welding torch movements in overlapping weld surfacing, differences between theoretical calculations and experimental findings appeared. Those were influenced by the properties of the used materials and the surface tension in the molten pool. An important influencing factor for weld surfacing was found to be also the interpass temperature.
Secondary keywords: weld surfacing;wire arc additive manufacturing;MIG/MAG welding;welding parameters;optimal overlap distance;low-alloyed and stainless steel;3D stitching;
Type (COBISS): Bachelor thesis/paper
Study programme: 0
Embargo end date (OpenAIRE): 1970-01-01
Thesis comment: Univ. v Ljubljani, Fak. za strojništvo
Pages: XX, 54 str.
ID: 23349833
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