Fabrication-Oxyacetylene-Cutting

Group results         Written evaluation

1/ Oxyacetylene cutting systems are also used to cut components from steel plates.

2/ This process uses a mixture of oxygen and the fuel gas acetylene, to preheat the metal to its ignition temperature, wich for steel, is 700 to 900 degrees centigrade.

3/ At this temperature a bright red heat, but this is still well below the materials melting point.

4/ A jet of pure oxygen is then directed into the preheated area, instigating a vigorous exothermic chemical reaction between the oxygen and the metal to form iron oxide or slag.

5/ The oxygen jet blows away the slag, enabling the jet to pierce and continue to cut through the material.

6/ Full text