Διεξαγωγή μετωπικών συγκολλήσεων FCAW διφασικών χαλύβων FCA με χρήση του αυτοματοποιημένου συγκολλητικού βραχίονα IGM RT 330.1

Μικερόζης, Γρηγόρης; Mikerozis, Grigoris

dc.contributor.author	Μικερόζης, Γρηγόρης	el
dc.contributor.author	Mikerozis, Grigoris	en
dc.date.accessioned	2014-10-21T08:56:07Z
dc.date.available	2014-10-21T08:56:07Z
dc.date.issued	2014-10-21
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/39278
dc.identifier.uri	http://dx.doi.org/10.26240/heal.ntua.7674
dc.rights	Default License
dc.subject	Συγκολλήσεις	el
dc.subject	Χάλυβες FCA	el
dc.subject	Ρομποτικός βραχίονας	el
dc.subject	FCAW	en
dc.title	Διεξαγωγή μετωπικών συγκολλήσεων FCAW διφασικών χαλύβων FCA με χρήση του αυτοματοποιημένου συγκολλητικού βραχίονα IGM RT 330.1	el
heal.type	bachelorThesis
heal.classification	Ναυπηγική τεχνολογία	el
heal.classificationURI	http://localhost:8080/healp/data/11/19/5
heal.language	el
heal.access	free
heal.recordProvider	ntua	el
heal.publicationDate	2014-09-15
heal.abstract	Εκτέλεση συγκολλήσεων πολλαπλών περασμάτων σε χάλυβες υψηλής αντοχής σε κόπωση με τη βοήθεια του ρομποτικού βραχίονα IGM RT330.1. Επιπροσθέτως, παρατίθεται μελέτη και ανάλυση της μικροδομής των συγκολληθέντων ελασμάτων καθώς και μελέτη της μικρό-σκληρότητας τους	el
heal.abstract	The present thesis examines and analyzes thoroughly, the matter of welding of dual phase (ferrite-bainite) FCA steels. The concerned procedures were conducted by means of an automated welding arm, which is in possession of the Shipbuilding Technology Laboratory of N.T.U.A. The implemented process, especially characterized by use of tubular electrodes, is Flux Cored Arc Welding. The structure of the thesis consists of a theoretical and an experimental section. The theoretical part includes a detailed reference, on the matter of fusion welding processes, with particular focusing upon the issue of GMAW & FCAW methods. Furthermore, it embodies a chapter of analytical description of the properties and characteristics of the category of Fatigue Crack Arrester steels. Additionally, a complete, concise and functional handbook was written, with the sole purpose of imparting all the existent knowledge, regarding the utilization of the robotic arm. On the contrary, the latter section is separated in two main parts. The first part is related to the execution of individual deposited layers of weld metal (Bead on Plate welds) on the surface of FCA steel plates and its role in parametric optimization of the main welding processes. The term parametric optimization incorporates procedures of finding applicable values for the parameters of a welding framework. The second part and the one of utmost importance, delves into the execution of multiple passes welding procedures for the concerning category of steels. The plates to be welded are divided in two segments, according to their dimensions. The role of deposition material is fulfilled by an alloy of congener chemical composition, as that of the parent metal, which is provided through the form of a wire, while the process is protected by a gas mixture of Ar-18% CO2. Both parts are subjected to metallographic observation and micro-hardness tests. Finally, substantial conclusions, which have arisen through the overall course of research, are notated.	en
heal.advisorName	Παντελής, Δημήτριος	el
heal.committeeMemberName	Τσούβαλης, ΝΙκόλαος	el
heal.committeeMemberName	Βοσνιάκος, Γεώργιος	el
heal.academicPublisher	Εθνικό Μετσόβιο Πολυτεχνείο. Σχολή Ναυπηγών Μηχανολόγων Μηχανικών. Τομέας Θαλάσσιων Κατασκευών. Εργαστήριο Ναυπηγικής Τεχνολογίας	el
heal.academicPublisherID	ntua
heal.numberOfPages	214 σ.
heal.fullTextAvailability	true