How to use the torch of the flame cutting machine

Cutting torch using CNC flame cutting machine

The cutting principle of the CNC flame cutting machine is the same as the ordinary "gas cutting" - the principle of hand-held cutting is to use the oxygen block flame to burn the cut portion of the steel piece to be cut to red heat, and then blow it in. The high-pressure pure oxygen flow causes the cut portion to be burned intensely in oxygen, melted into a liquid, and washed away by the air stream, thereby achieving the cutting purpose.

The CNC flame cutting machine cutting torch is the main tool used in gas cutting. The difference between the "cutting gun" and the "torque gun" is that there is one more pure oxygen flow injection pipe and one more gate, and the rest of the construction principle and welding torch It is also similar in general.

How to use the "cutting gun" of CNC flame cutting machine: first unscrew the acetylene gas switch, and slightly unscrew some oxygen switches. After ignition, adjust the supply of oxygen to make the oxyacetylene flame become neutral flame (that is, acetylene and oxygen) The amount is appropriate). When cutting, first use this oxy-acetylene flame to burn a red hot point at a certain point to be cut, and then unscrew the high-pressure pure oxygen flow switch, so that the metal is violently burned into a liquid in the oxygen flow, washed away, and then the torch is turned along. The line ready to be cut moves to cut the metal off.

When the CNC flame cutting machine is cut, the angle of the cutting gun, the cutting speed and the oxygen pressure are required. The inclination of the cutting gun is mainly related to the thickness of the workpiece. When cutting a steel plate of 5 to 20 mm thick, the torch is perpendicular to the workpiece and does not have to be tilted. The cutting gun is placed straight, the better the cutting quality, and the smaller the slit. When the workpiece is to be cut to a thickness of less than 5 mm, it can be tilted forward to cut. If the workpiece is cut to a thickness of more than 30 mm, the cutting gun should be tilted backwards to cut. After the cutting, the cutting torch is moved while the cutting gun is turned into a workpiece perpendicular to the workpiece, and waits until the cutting is fast. Then tilt the torch slightly inside until it is cut.

The speed of the cutting speed depends on the thickness of the workpiece. The thinner the workpiece, the faster it should be, and vice versa. The amount of pressure supplied to the high pressure oxygen stream is also related to the thickness of the cut workpiece. If the oxygen supply is insufficient, it will not cut through; if the pressure is too large, it will cause wasted oxygen.

When finished, first turn off the high pressure oxygen flow switch, then turn off the acetylene gas switch, and then turn off the oxygen switch after the oxyacetylene flame is blown out.