What is the typical maximum temperature of an oxy-acetylene flame in gas welding?
3100 degree Celsius
In gas welding the neutral oxy-acetylene flame produces the highest temperature of the common fuel-gas flames.
Burning acetylene with oxygen reaches a peak temperature of about 3100 °C at the inner cone.
This intense heat is what allows the flame to melt steel for fusion welding.
Values of 2000, 2400, or 2900 °C are below the actual peak of the oxy-acetylene flame.
Hence, the answer is 3100 degree Celsius.
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