UNIT 5 WELDING Welding - IGNOU
Figure 5.1 : Establishment of Flame in Oxy-acetylene Welding 5.3.1 Neutral Flame A neutral flame is obtained when equal amount of O 2 and C 2H 2 are mixed and burnt at the outlet of welding torch. The flame consists of two sharply defined zones inner white flame cone outer envelope of blue colour as shown in Figure 5.2. In this flame none of
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