With the incomparable advantages of large cutting format, fast cutting speed and thicker plates, the high-power 6000W metal CNC fiber laser cutting machine has been widely recognized in the market. However, because the high-power cutting technology is still in the primary stage of popularization, some operators are not very proficient in the skills of high-power 6000W metal CNC optical fiber laser cutting machine.

The high-power laser cutting engineer of Jinan rebound CNC Machine Co., Ltd. has summarized a series of solutions to the poor effect of high-power laser cutting through long-term testing and research, which can be used as a reference for all friends who need CNC plasma cutting machine and CNC fiber laser cutting machine.

When we find that the cutting effect is not good, we should first investigate the following reasons:

1. All lenses in the laser head of metal CNC optical fiber laser cutting machine are clean without pollution;

2. The water temperature of the water tank of the metal CNC fiber laser cutting machine is normal, and the laser has no condensation;

3. The metal numerical control optical fiber laser cutting machine has excellent cutting gas purity, smooth gas path and no air leakage.

Question 1: cutting with stripes

Possible causes:

1. The nozzle type is incorrect and the nozzle is too large;

2. The air pressure is not set correctly, and the set air pressure is too high, resulting in over burning and stripes;

3. If the cutting speed is wrong, too slow or too fast cutting speed will also cause full overburning.

terms of settlement:

1. Replace the nozzle. Replace the nozzle with small diameter, such as 16mm carbon steel bright face cutting. High speed nozzle D1 can be selected 4mm； High speed nozzle D1 can be selected for 20mm carbon steel bright surface 6mm；

2. Reduce cutting air pressure and improve end face cutting quality;

3. Adjust the cutting speed of the metal CNC optical fiber laser cutting machine to match the power with the cutting speed properly, so as to achieve the effect shown in the right figure below.

Problem 2: there is tumor residue at the bottom

Possible causes:

1. The nozzle is too small and the cutting focus does not match;

2. The air pressure is too small or too large, and the cutting speed is too fast;

3. The material of the plate is poor, the quality of the plate is poor, and it is difficult to remove the tumor slag with a small nozzle.

terms of settlement:

1. Replace the large-diameter nozzle and adjust the focus to the appropriate position;

2. Increase or decrease the air pressure until the air flow is appropriate;

3. Select good plates.

Problem 3: burr at the bottom

Possible causes:

1. The nozzle diameter is too small to meet the processing requirements;

2. If the negative defocus does not match, increase the negative defocus and adjust the appropriate position

3. The air pressure is too small, resulting in burrs at the bottom, which can not be fully cut.

terms of settlement:

1. Large diameter nozzle can increase air flow;

2. Increase negative defocus to make the cutting section of metal NC optical fiber laser cutting machine reach the bottom position;

3. Increasing the air pressure can reduce the burr at the bottom.