When the fiber laser cutting machine is cutting, i’ts very important to select the different cutting gasesaccording to the material of the cutting plate. Therefore the choice of gas and pressure has a great impact on the quality of fiber laser cutting machines.

What are the auxiliary gases used in آلات قطع ألياف الليزر?

Auxiliary gases used in fiber cutting machines are mainly including oxygen, nitrogen and air. Using Nitrogen  to cut copper, aluminum, and stainless steel. Hoevery carbon steel needs to cut with oxygen generally. When using air cutting, there a 10 kW air compressor is required, and a 7.5 KW dryer and a tertiary filter are required too.

Effect of gas and pressure on cutting quality

1) The cutting gas helps to dissipate heat and assist combustion, and blows off the melt to obtain a better quality cut section.

2) When the pressure of the cutting gas is insufficient, the following effects will affect on the cutting quality. The melting will occur during cutting, and the cutting speed cannot meet the production efficiency.

3) When the pressure of the cutting gas is too high,  the cutting surface will be rough, and the slit will be wide; at the same time, will melt the cut section partially, and  cannot form a good cutting section.

تأثير ضغط غاز القطع على التثقيب

1) عندما يكون ضغط الغاز منخفضًا جدًا ، لا يخترق الليزر بسهولة ورقة القطع ، ويزيد وقت التثقيب ، مما يؤدي إلى انخفاض الإنتاجية.

2) عندما يكون ضغط الغاز مرتفعًا جدًا ، فإن نقطة الاختراق تذوب لتشكيل نقطة انصهار كبيرة ، مما يؤثر على جودة القطع.

3) When laser drilling, punching of the thin plate is applicalbe to the a higher gas pressure generally . And the punching of thick plate adopts the specific punching method . Thereby eliminating the disadvantage of the low air pressure to protect the lens.

4) When the laser cutting machine cuts ordinary carbon steel, the thicker the material, the lower the pressure of the cutting gas. When cutting stainless steel, the cutting gas pressure increases relatively with the thickness of the material.

In short, you needs to adjust the cutting gas and pressure according to the actual situation . In specific applications, also need to select the different cutting parameters according to the specific conditions.