Читать книгу Welding Metallurgy - Sindo Kou - Страница 56

Example 1.1 A 1100 Al (commercially pure Al) sheet was welded by GTAW with a 1100 Al filler wire, as shown in Figure E1.1. (a) What is wrong with the weld? (b) Were the filler metal droplets able to enter the weld pool properly? Why or why not? (c) Which polarity of GTAW was used for welding? (d) How can the problem be overcome?

Figure E1.1 GTAW process used to weld A 1100 Al sheet with a 1100 Al filler wire.