Relationship between wire feed speed and metal transfer in GMAW

• Autorzy: Węglowski M. S. , Huang Y. , Zhang Y.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This paper presents the results of an investigation of the metal transfer. The main goal of the investigation was to check that using narrow band filter and high speed digital video camera can be used, without a back-lighting laser, to observe the metal transfer process. Presented are the influence of wire feed rate (welding current) on droplet diameter, droplet trajectory and velocity. Design/methodology/approach: The experiments were carried out on an automated welding table. A high speed video camera "Olympus i-SPEED" was used. For each welding wire feed speed the image of metal transfer and welding parameters (welding current, arc voltage and wire feed rate) were recorded. Findings: Results presented in this paper indicate that the wire feed has a sig.nificant influence on droplet diameter, droplet trajectory and droplet velocity. That method based on digital high speed camera and narrow band filter is very sensitive to the changes of welding conditions and should be used as a tool for monitoring of the GMAW process. Research limitations/implications: The high speed video camera is an expensive instrument and it can be used only as a laboratory tool in monitoring and optimizing of welding processes. Practical implications: The achieved experience allows directing further research on the metal transfer in GMAW and studying the possibilities of using this method in other welding processes. Originality/value: The new method for monitoring metal transfer based on narrow band filter and high speed digital camera does not require He-Ne laser to provide the back-lighting in order to observe the metal transfer process. This method is cheaper and easier to use. The original results of these investigations are mathematic descriptions of droplet flight trajectory and droplet velocity.

Słowa kluczowe

EN

welding; metal transfer; high speed camera; sensing

PL

przetapianie; przenoszenie metalu; szybka kamera; spawanie

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2008
• Tom: Vol. 29, nr 2
• Strony: 191--194
• Opis fizyczny: Bibliogr. 16 poz., wykr.

Twórcy

autor

Węglowski M. S.

autor

Huang Y.

autor

Zhang Y.

• Welding Department, ul. Bł. Czesława 16/18, 44-100 Gliwice, Poland,

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