Automatic Welding, 2019, №09



2019 №09 (06)

DOI of Article 10.15407/as2019.09.07

2019 №09 (08)

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Avtomaticheskaya Svarka (Automatic Welding), #9, 2019, pp. 52-56

Calculation of the radius of transition of the weld to base metal of aluminium alloy welded joints

A.V. Moltasov, I.N. Klochkov

E.O. Paton Electric Welding Institute of the NAS of Ukraine, 11 Kazimir Malevich Str., 03150, Kyiv, Ukraine. E-mail: office@paton.kiev.ua

The objective of the work was establishing a mathematical dependence between the radius of the weld transition to base metal and ratio of weld height to its width in butt welded joints of aluminium alloys. During investigations, the authors used the published data on geometrical dimensions of butt joints of aluminium alloys of the second, fifth, sixth and seventh series to DSTU ISO 209-1:2002 made by consumable and nonconsumable electrode argon-arc welding, as well as consumable electrode pulsed-arc welding. When plotting the sought dependencies regression analysis was conducted with application of MathCAD system. An analytical formula was obtained in the form of a polynomial with fractional powers to determine the radius of weld transition to base metal, as a function of the ratio of reinforcement height to its width on the joint face side. It is found that the proposed formula can also be recommended for determination of the radius of transition of the weld back bead to base metal. 19 Ref., 3 Tabl., 2 Fig.
Keywords: butt welded joint, aluminium alloys, gas-shielded welding, weld geometry, radius of weld transition to base metal, back bead, regression analysis

Received: 21.05.2019

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