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Investigations on the joint properties of the friction welding of aluminium alloy tube to tube plate using an external tool

Korkmaz E., Gülsöz A., Meran C.

Journal of Achievements in Materials and Manufacturing Engineering

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2017

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Vol. 81, nr 2

70--75

EN

Purpose: Aluminium and its alloys are frequently used in structural applications due to their good welding ability as well as their high strength and corrosion resistance. Several developments have been observed on the welding of aluminium in last decade. The manufacturing of heat exchangers, economizers and boilers is highly cost progress due to tube to tube plate welding’s. The purpose of this study is investigation of friction weldability of tube to tube plate aluminium alloys using an external tools (FWTPET) which is a relatively newer solid state welding process used for joining tube to tube plate. Design/methodology/approach: First, preliminary experiments were carried out to determining suitable the tool rotational speed, pressure load and temperature. An experimental setup has been designed and manufactured to keep the pressure load constant during the preliminary tests. Then, by changing the weld mouth on the plate, the gap between the tube and the plate, and the tube projection parameters, the effects of all parameters on shear strength values, micro hardness values and the formation of internal structure of the weld zone were investigated. Findings: It was founded that aluminium tubes can successfully weld to tube plates with using an external tools. Also it is seen that vertical force between tool and sample, tube protection and temperature are very important parameters which are effect of welded joint properties. Practical implications: FWTPET which is new welding method has been used in industrial field in last few years. Originality/value: In the beginnings studies concentrate on non-ferrous metals such as Al, Cu, Mg etc. So this studies on FWTPET have remarkable importance.

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Urządzenie do automatycznego spawania wkładów kominowych

Laudacka A.

Spajanie Metali i Tworzyw w Praktyce

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2007

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nr 4(19)

33

PL

Zakład Elektromechaniczny ELKO-77 z Pruszkowa działa na polskim rynku spawalniczym od 30 lat. Specjalizacją firmy jest mechanizacja i wyposażenie w źródła prądu indywidualnych stanowisk spawania, ciecia plazmowego i zgrzewania oporowego w oparciu o własne opracowania konstrukcyjno-technologiczne.

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Laserowe spawanie rur. Problemy technologiczne i sterowanie

Sikorski G., Nowak S., Żaba K.

Rudy i Metale Nieżelazne

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2006

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R. 51, nr 11

677-681

PL

Przedstawiono informacje dotyczące metod śledzenia wiązki lasera podczas laserowego spawaniu rur — metody mechanicznej i optycznej za pomocą czujników CCD. Przedstawiono również wyniki pomiarów pracy ruchy głowicy lasera przy zastosowaniu czujnika mechanicznego i optycznego.

EN

It is essential to track welded junction in the process of tube laser welding. During the process of shaping the slot tube of a strip joint during movement toward welding zone moves also on the Y-axis. Every welding system must be equipped with joint-contact watching system and that is why welding head together with laser beam will be able to follow on Y-axis, right after the edge of welded material. Nowadays two methods of joint watching are used, one is mechanical, and the other one is optical (electronic). Mechanical method is watching the joint by "jumping roll", which is placed in a slit of a joint. The roll following the edges of welded material is giving the signals of movement to welding head. The second method used for few years in production of tubes is the CCD sensing system.