1 、 Choosing the cutting speed

Cutting speed is a key factor in achieving a high quality end result. If the cutting speed is too slow, the cut will be wider, less precise, and rougher.

On the other hand, if the cutting speed is too high, it may cause cutting failure with sparks around it, the cutting section will be rough and some parts may not be cut completely.

The feed rate can be judged from the cutting spark. Sparks will diffuse downward in normal cutting, and when the speed is too high, sparks will build up. In the event that the sparks do not spread but rather coalesce, this indicates that the feed rate is too low.

2.Effect of nozzle

The airflow condition will be different depending on the different nozzle designs, which will directly affect the quality of the cut.

The nozzle fulfills 2 main functions:

* Prevents debris from bouncing up and damaging the lens.

* Helps control the area and size of the makeup gas diffusion.

Nozzle height

Take care that the nozzle is at a suitable height. The distance between the nozzle and the workpiece should be between 0.8mm and 1.2mm.

Too low a height can cause the sheet metal and die to collide, and too high a height will cause the gas to diffuse, causing a large amount of debris at the bottom of the cut.

Nozzle diameter

In general, when the nozzle diameter is small, the gas velocity is high, and the melt removal ability is strong. It is suitable for thin plate cutting, so a fine cutting section can be achieved.

When the diameter of the nozzle is large, the gas velocity is low and the melt removal ability is poor. It is suitable for cutting thick plates at low speed.

3. Selection of laser power

If the laser power is too small, the heat is insufficient and the temperature of the molten product near the bottom edge is lower, and the viscosity is higher, so that the high-pressure air flow cannot fully expel.

If the laser power is too high, the heat input is too large, so that the melting range of the workpiece is greater than the air flow can expel, so the molten metal is not removed completely.

4. Choice of make-up gas

Auxiliary gas can not only remove slag in time, but also play the role of cooling the workpiece and cleaning the lens. Different auxiliary gases can be used to change the cutting speed and the quality of the groove surface.

How to choose auxiliary gases?

5.Effect of ceramic ring

The ceramic ring is an important part of the cutting head of the metal laser cutting machine. Its main function is to transmit the electrical signals collected by the nozzle of the laser head.

When it comes to the ceramic ring, try:

Choose the gold-plated copper needle ceramic ring. This will give you better signal conductivity while cutting.

Check the quality of the ring. The conical surface of the upper part of the ceramic body must be highly smooth and free from bumps or scratches.

Check the quality of the assembly. The stainless steel part must be tightly bonded to the ceramic body and there must be no lift, deformation or gap.

Always try to keep these factors in mind when laser cutting metal to obtain high quality results and position yourself as one of the best on the market.