How to Judge Power Setting is Suitable?|Fiber Laser Cutting Machine

The video is telling the mothods to "How to judge power setting is suitable" of fiber laser cutting machine.

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Hi, I am Clara. In order to achieve a better cutting effect, it is necessary to adjust the output power. So, how do we judge whether the laser power is suitable? Today this video will tell you. Before get into the main chapter, please don’t forget to subscribe to this channel and give me your like, thank you.
Generally, we can judge by two methods: (1) observe the section condition after cutting; (2) observe the spark condition during the cutting process. Let's talk about the first.
Taking the most common carbon steel as an example, when the laser power is suitable, the wave marks on the cutting surface are relatively fine, we can see the picture over here, the distance between the wave marks is relatively small, and the lower part of the cutting surface is slightly lagging relative to the cutting direction.
When the laser power is too large, the wave marks on the cutting surface will be straight up and down, and the spacing between the wave marks will also become larger. A reference picture is here.
When the laser power is too small, the lower part of the cutting surface will become very rough, with a lot of slag and difficult to remove. If the output power is further reduced, the material will not be cut through.
Here please noted, when other parameters are not set properly, the above conditions could happen, don’t misunderstand me. The above cases should be in a premise which all other factors and parameters are quite suitable and we says the power only.
I would like to show you a video next, please judge whether the power for the plate is suitable.
Could you reply the question now, actually it is 2000W for 20mm, which is the maximum cutting capacity. So I think we should say the power is a little smaller for such thickness.
The second situation is the cutting spark situation, the spark sputtered under the cutting material is affected by the fluidity of the molten metal in the slit, so to a certain extent, it can reflect whether the laser power is appropriate.
If the spark is straight and slightly behind the direction of cut travel, the laser power is appropriate. We can see it much clearly from the next two pictures.
If the spark exhibits a diffuse appearance, or is ahead of the cutting travel direction, the surface laser power is not set properly. We can see it much clearly from the next two pictures.
Next I will show a short video to show you the cutting spark, I have made it slower.
If we need to improve the processing capacity, we can do it by increasing the laser output power, that is to set the parameter. Up here a video says the power setting theory, please click it to get more. Of course, if our machine's maximum power is 1000W, we can't expect it to cut carbon steel plates with a thickness of 20mm, right? At this time, consider upgrading the machine, or replace it with a high-power one. Commonly there are three condition asking us to increase the output power.
1. The cutting speed is too slow, and we want to speed up the cutting speed
For example, cut 5mm carbon steel plate with oxygen, and cut with 1KW, 2KW, 3KW laser, and the speed is 1.4m/min, 1.8m/min, 2.5m/min respectively.
2. The metal plate is thicker than our expectation
For example, when cutting carbon steel plates, in the case of extreme cutting, 1KW can cut 12mm, 2KW for 20mm, and 3KW can cut 25mm.
3. Cutting high reflective materials such as gold, silver, copper and aluminum
For example, in the case of extreme cutting, a 3KW laser can cut carbon steel with a thickness of 25mm, but can only cut aluminum with a thickness of 8mm; if we want to cut aluminum with the same thickness of 25mm, it is necessary to increase the power to 8KW.
Could you get some useful information from today’s video, I am Clara, thank you for joining me here today. Recently a lot of friends are sharing their stories with the lasers, it is super happy for me to know you guys, I will see you next Tuesday here on my YouTube channel, see you, bye!