Hebei Juliang Technology Co., Ltd. is one of the leading manufacturers and suppliers of cnc flame cutting machine in China. Please feel free to buy CE approved machinery made in China here from our factory. All customized machines are with high quality and competitive price.
What Is a CNC Flame Cutting Machine?
A CNC flame cutting machine uses a controlled combustion process - oxygen and a fuel gas like propane or acetylene - to cut carbon steel. The machine heats the steel to its kindling temperature, then releases a high-pressure stream of cutting oxygen that oxidizes the metal and blows the molten slag out of the cut. The CNC system guides the torch along the programmed path, automating what was once a manual process.Flame cutting is not a new technology. But for shops processing thick carbon steel - 50mm, 100mm, even 300mm - it remains the most practical option.
usage scenario
Shipbuilding - Cutting hull plate sections and structural components. The plates are thick - often 50mm or more - and flame cutting is the standard process.The machine handles plates up to 6 meters wide and 20 meters long.
Pressure vessel and boiler fabrication - Cutting thick-walled carbon steel plate, often with beveled edges for welding preparation. The material is typically 20mm to 100mm or more. Flame cutting handles the thickness economically.
Heavy equipment manufacturing - Cutting components for mining equipment, construction machinery, and agricultural implements. The thick sections require flame cutting.
Steel service centers - Processing heavy plate for customers. The machine runs batches of parts, cutting multiple shapes from each sheet.
Structural steel fabrication - Cutting plates for building frames and bridges. The machine cuts bevels for weld preparation directly on plate edges.
Difference between the two
The choice between flame and plasma comes down to thickness and economics. Here is what the data shows.
On materials up to 25mm, plasma is significantly faster - up to 12 times faster on thin gauge material and about twice as fast on 25mm steel.- Plasma also produces cleaner cuts with less dross and a smaller heat-affected zone.
But on steel over 75mm thick, flame cutting is the more economical choice.The equipment costs less - a plasma system can cost about ten times more than an oxy-fuel system.
Flame cutting also handles thicknesses that plasma cannot touch economically. A CNC flame cutting machine can cut carbon steel from 6mm up to 300mm or more.On 150mm plate, plasma is impractical. Flame cutting is the standard.
Maintenance
Daily – Check torch consumables (nozzles, electrodes, swirl rings). Clean the guide rails. Remove slag and debris from the cutting table.
Weekly – Clean and lubricate the rack-and-pinion drives. Inspect the drive system for unusual noise or vibration. Check the torch height control.
Monthly – Inspect the guide rails for wear and alignment. Check the gear and rack occlusion state. Tighten main bolts. Check electrical connections.
Common wear items – Plasma nozzles and electrodes, oxy-fuel tips, guide rail wipers.
Most common issue – Gas quality. Moisture or oil in the gas lines damages consumables and affects cut quality.
FAQs
How does the machine cut curved shapes and circles?
The CNC controller interpolates the X and Y axes simultaneously to follow the programmed path. The machine maintains accurate positioning through servo motors and encoder feedback. For tight curves, the control system automatically reduces the cutting speed to maintain edge quality and prevent the arc from lagging behind the motion.
What thickness can a CNC flame cutting machine handle?
Standard configurations cut from 6mm to 150mm. Optional sconfigurations handle up to 300mm. The machine is designed for thick carbon steel processing where plasma becomes less economical.
Can a flame cutting machine cut stainless steel or aluminum?
No. Flame cutting works only on carbon steel and low-alloy steel. Stainless steel and aluminum do not oxidize in the same way and require plasma cutting.
The machine needs these maintenance tasks:
- Daily: Torch tip and guide rail checks.
- Weekly: Drive system cleaning and lubrication.
- Monthly: Inspection of guide rails, drive gears, and electrical connections.
Pay close attention to gas quality, especially oxygen purity; it's the most common cause of problems.
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