Some Technological Difficulties And Solutions Of High Power Laser Cutting
High-power laser cutting machines have unparalleled advantages such as large cutting width, fast cutting speed, and the ability to cut thicker plates. High-power laser cutting has been unanimously recognized by the market. However, since high-power cutting technology is still in the initial stage of popularization, some operators are not very proficient in the skills of high-power laser cutting. Let's talk about some difficulties and solutions of high-power laser cutting machine in the cutting process:
If the cutting effect is found to be poor, the following reasons should be investigated first:
1. All lenses in the laser head are clean and free of contamination;
2. The water temperature of the water tank is normal, and the laser has no condensation;
3. The cutting gas has excellent purity, the gas path is smooth, and there is no gas leakage.
Problem 1: Cutting Tape Stripes
possible reason:
1. The nozzle selection is wrong, and the nozzle is too large;
2. The air pressure setting is incorrect, and the air pressure setting is too large, which leads to over-burning and streaks;
3. The cutting speed is not right. If the cutting speed is too slow or too fast, it will also cause sufficient overburning.
Solution:
1. Replace the nozzle with a small diameter, such as 16mm carbon steel bright surface cutting, you can choose high-speed nozzle D1.4; 20mm carbon steel bright surface can choose high-speed nozzle D1.6;
2. Reduce the cutting air pressure and improve the cutting quality of the end face;
3. Adjust the cutting speed, and the power and cutting speed match properly, in order to achieve the following better results.
Question 2: There is nodules at the bottom
possible reason:
1. The nozzle selection 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 not good, and it is difficult for the small nozzle to remove the slag.
Solution:
1. Replace the large-diameter nozzle and adjust the positive focus to an appropriate position;
2. Increase or decrease the air pressure until the air flow is appropriate;
3. Choose a good plate.
Problem 3: There are burrs at the bottom
possible reason:
1. The nozzle diameter is too small to meet the processing requirements;
2. The negative defocus does not match, you should increase the negative defocus and adjust the appropriate position
3. The air pressure is too small, resulting in burrs at the bottom, which cannot be fully cut.
Solution:
1. Use large-diameter nozzles to increase airflow;
2. Increase the negative defocus to make the cutting section reach the bottom position;
3. Increase the air pressure to reduce the bottom burr.