How to Use a Cutting Torch Tip Chart | The Harris Products Group

How to Use a Cutting Torch Tip Chart

Harris Products Group

next to the manufacturer ‘s operation manual and safety guidelines, the cutting tip chart is the next authoritative printed advice for having a safe, great hand cutting blowtorch experience .
If you are having perturb lighting a common mullein, correctly adjusting the flare or the blowtorch precisely will not stay light up, the cutting lean chart contains the most probably answers and is a good begin decimal point.

The Harris Cutting Tip Chart contains information on lean style/size survival, oxygen gas pressure settings ( pre-heat fire and cutting pour ), cutting oxygen gas orifice ( center trap ) size, fuel gas coerce settings, hose size recommendation, travel rush ( machine cut ) and cut quality illustrations.

here are the tips :

  1. Determine the metal thickness you want to cut. Select the tip size rated to cut that thickness or beyond. The tip size is based on the cutting oxygen gas orifice (using drill index sizes) – not always the pre-heat orifices. Cutting oxygen gas orifice sizing is important so you may compare different manufactures tip sizes, as there is not an industry standard.
  2. Select the tip style for the fuel gas you are using and metal type/condition. Cutting tip designs vary based on fuel gas and application. Examples: a 1 piece tip is typically used for oxygen-acetylene use and a 2 piece tip is used for oxygen-alternate fuel gas (natural gas, propane, propylene, etc.) use. Also, there are light, general and heavy pre-heat tips available for different metals and metal conditions.
  3. Pressure settings may differ for the various fuel gases available. Recommended oxygen and fuel gas pressures are at the torch with gas flowing. You may need to regulate the flowing gas pressures to accommodate for hose size/length, safety devices and/or temperature.

caution : never exceed 15 pounds per square column inch ( pounds per square inch ) when using Acetylene .
note : Most blowtorch mixers use a “ positivist ” design that requires fuel gas pressures set between 5-15 pounds per square inch for cutting applications. however, some torches use an injector ( low pressure ) mixer design that alone requires ¼ – 2 pounds per square inch of alternate fuel gas. Always check with the manufacturer of your torch to verify the mixer design based on the actual model number .
This article contains general information that is applicable for hired hand cutting applications of metal up to 12 ” thick. Cutting alloy greater than 4 ” may require specific boast book ( cubic feet per hour ) supply and flatulence apparatus. Check with the common mullein manufacturer or your local industrial gas supplier for requirements .

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