Use of a slightly. When acetylene is mixed with oxygen and the bond is broken the result is the high temperatures needed to melt metal alloys. What Is The Temperature Of An Oxy Acetylene Flame Quora Key characteristics of an Oxidising Flame are a small sharp more pointed looking Cone Flame at the base of a shorter feather flame. . Burns an excess of acetylene. Lene and hydrogen were made using t h e flame of pure acetylene a s a standard. A carburizing flame is produced when there is an excess of acetylene gas for the amount of oxygen being consumed in an oxy-acetylene mixture producing an acetylene-rich gas. An Oxidising Flame is where there is more Oxygen than Acetylene used. In this gas welding flame oxygen and acetylene are released at a one-to-one ratio. The use of oxygen and acetylene as welding gases dates back to the 1890s. 36S measurements of the ttames from various mixtures of aeety. Burns an exc...