Cutting Metal Thickness over 500mm
Cutting metal with a thickness of more than 500 mm is a rather complicated technological process. There is a misconception that in order to cut a large thickness, you just need to increase the diameter of the cutting oxygen channel, add the cutting oxygen pressure, and add the power of the heating flame. But this is not the case. The fact is that the process of oxy-fuel cutting is the process of oxidation (combustion) of iron in an oxygen atmosphere. And the fuller and better this reaction pass, the faster and to a greater thickness the metal is cut through. And the main thing in this matter is the uniform heating of the metal throughout its entire thickness. And with a thickness of more than 300 mm with an ordinary mouthpiece, it is very difficult to do this.
For uniform heating of thick metal, two-flame metallurgical nozzles are used, which provide a minimum temperature drop between the upper and lower edges of the cut metal, due to the heating of the inner surface of the cut with an internal flame.
Also, the pressure of the cutting oxygen must not be raised above 4-5 Bar, because a powerful jet of cold oxygen (the temperature of which, due to a sharp expansion, may even be negative), will cool the cut trunk in its lower part and the oxidation reaction of iron will slow down and the metal cut through-thickness will worsen. Therefore, the pressure of the cutting oxygen is lowered. For example, cutting metal with a thickness of more than 1000 mm is carried out at a pressure of 2.5-3.0 Bar.
Plazmamax provides oxy-fuel and plasma-cutting equipment used to produce trusses, bridges, cranes, railways, power lines, fencing lights, and wagons. Our equipment can also be used to construct oil and metallurgical plants, with the added benefit of applying high-quality protective, anti-corrosion coatings.