Flame cutting of Steel Profiles
Flame cutting is ideal for cutting steel profiles from carbon and low alloy steels with a thickness of 6mm to 270mm. Accuracy achieved is +/- 1mm to 3mm depending on thickness of metal. High speed, high accuracy multi-head CNC flame cutting produces accurate and repeatable pieces, perfect for achieving highly repeatable steel profiles.
This process is the best choice for inexpensive cutting of carbon steel and most alloy steels. Flame cutting does create a heat affected zone (HAZ) around the cut that may require removing by an additional machining stage (see below).
How does it work?
Flame cutting a steel profile uses a combination of gases – typically oxygen and propane – to create a controlled flame that heats the metal to melting point and blasts away the molten, oxidised slag to create a slot right through the metal. Thicknesses of over 400mm can be flame cut.
What are the Advantages of Flame Cutting?
CNC Flame cutting uses multiple-torches, this means that the process is ideal for high volume production runs of steel profiles that need repeatable accuracy.
Flame cutting is an ideal process to be paired with a secondary machining process such as lumsden grinding which can apply additional machining to Heat Affected Zones (HAZ) and can deliver an improved final product.
How does Flame cutting differ from laser cutting?
Flame cutting is capable of cutting much thicker profiles than laser cutting, whilst a flame cutter can cut profiles up to 400mm or more and laser cutter is limited to around 25-30mm. Laser accuracy is greater that flame cutting, whilst flame cutting is accurate to 1-3mm, laser cutting can be accurate to better than 1/10 mm.
See also information on our precision surface grinding services