Step 1: Oxy/Fuel Pressure Settings
Using to much pressure with MagneGas is not optimum when setting the gauges. What we look for is lower pressures with the gas setting to obtain a hotter, more workable flame temperature. The Oxygen side helps to achieve the desired exothermic setting, but also acts as the pressure that blows melted material away from the cut area. With this in mind, for a basis, we usually start with the settings on MagneGas between 2 and 5 psi. The only variable is “built-in” restrictions in your line set-up (multi-hose, splices, flashbacks, and check valve connections), which may present a small limitation. Your settings should be around 4lbs and 40lbs.
When set correctly, fuel should be a feathery flame
Step 2: Fuel Flow
We have the best success when there is not an abundant amount of fuel flow, as this affects performance and longevity. Correctly setting the fuel also ensures that the proper exothermic reaction occurs. After ignition, adjust our fuel to a slight sounding, feathery flame. The optimum setting should appear like this. More fuel will not create more heat, and it will only provide wasted flow.
Step 3: Introducing Oxygen
Slowly introduce the oxygen into the flame, and you will start to see the primary flames appear. As you add more, the primaries will change colors. Do this slowly until you have this procedure perfected. The first color you will see is a white-ish colored flame with minimal sound, use this for thin/fragile metalworking procedures. As you add more oxygen, the primary will turn blue, this is preferred for standard cutting and gouging procedures and is a mild sound. If you apply even more oxygen, you will achieve a purple primary setting, with a louder sound of the flame. This setting best performs for brazing.
Step 4: Starting the Cut
Very little pre-heat is necessary with our fuel. If the flame primaries are close enough to the surface corner, it should, almost instantly, molten. If this does not start in a 3-5 second period, please re-adjust the settings or look for tip imperfections. We highly suggest that you utilize the half on/half off method so that a pressure pop or piercing does not occur when starting the cut. Then adjust Oxygen flow with the exhaust handle to apply only necessary pressure to remove molten slag based upon your preferred cut speed. We highly recommend a rate in which the cut sounds as if you are ripping sheets apart. Utilize the Tip Chart for suggested recommended pressures and speed settings.
Our fuel is mostly agnostic. Most cutting torch types and tips can be utilized for most applications. Call your local MagneGas Welding Supply Store for additional information.