The effect of welding fixtures on welding distortions

• Autorzy: Vural M. , Muzafferoglu H. F. , Tapici U. C.
• Konferencja: 12th International Scientific Conference CAM3S'2006, 27-30th November 2006, Gliwice-Zakopane
• Języki publikacji: EN

Abstrakty

EN

Purpose: of this paper is to examine the effect of welding fixture used to prevent the distortions during cooling process utilizing a robot controlled gas metal arc welding method on cooling rate and distortions of welded structures. Design/methodology/approach: Using a specially designed welding fixture for a welded steel structure, six different types of AISI 1020 steel specimens are tested in three different welding speeds and two different cooling conditions either at fixture or without using fixture. Findings: designed fixture is reduced amount of distortions. The preheating effect of previous weld on the next weld has increased distortions on the other side of part. Increase in distortions is directly proportional to the increase in welding speed which affects the weld heat input. Research limitations/implications: the study can be repeated on more complex structures and fixtures. Practical implications: the study has shown that the fixture design has an important effect on cooling rate of the welded parts. Originality/value: most of papers in literature is about fixture design methodology, but this paper is an example of demonstration for a practically applied welding fixture.

Słowa kluczowe

EN

welding distortion; welding fixture; weld sequence; welding speed; GMAW

PL

dystorsja spawalnicza; pozycjonowanie przy spawaniu; ścieg; spawanie GMAW; GMAW

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2007
• Tom: Vol. 20, nr 1-2
• Strony: 511--514
• Opis fizyczny: Bibliogr. 7 poz., fot., rys., tab.

Twórcy

autor

Vural M.

autor

Muzafferoglu H. F.

autor

Tapici U. C.

• Mechanical Engineering Department, Istanbul Technical University, Inonu Caddesi, No: 87 34437 Istanbul Turkey,

Bibliografia

• [1] R. Hunter, A. Vizán, J. Pérez, J. Rios, Knowledge model as an integral way to reuse the knowledge for fixture design process, Journal of Materials Processing Technology, Volumes 164-165 (2005) 1510-1518.
• [2] T. Xitang, S. Qingyu, Preventing welding hot cracking by welding with an intensive trailing cooler, Journal of Materials Processing Technology, Vol. 97, Issues 1-3 (2000) 30-34.
• [3] M.A. Wahab, M.J. Painter, M. H. Davies, The prediction of the temperature distribution and weld pool geometry in the gas metal arc welding process, Journal of Materials Processing Technology, Vol. 77, Issues 1-3 (1998) 233-239.
• [4] A. Carpinteri, C. Majorana, Fully three-dimensional thermomechanical analysis of steel welding processes, Journal of Materials Processing Technology, Vol. 53, Issues 1-2 (1995) 85-92.
• [5] V.S.R. Murti, P.D. Srinivas, G.H.D. Banadeki, K.S. Raju, Effect of heat input on the metallurgical properties of HSLA steel in multi-pass MIG welding, Journal of Materials Processing Technology, Vol 37, Issues 1-4, (1993) 723-729.
• [6] Y. Kasuga, T. Jimma, Y. Yamaguchi, Analysis of temperature and membrane stresses on welding and cooling in the process of producing 304 stainless-steel pipes, Journal of Materials Processing Technology, Vol. 31, Issues 1-2 (1992) 295-306.
• [7] U.Ç. Tapıcı, Fixture design for robotic welding application and analysis of welding distortions, Ms.S Thesis, Istanbul Technical University, Institute of Science and Technology, 2006.