Optimal Ratio of Laser Power to Scanning Speed

It introduces a formula for calculating the golden ratio between laser power and scanning speed, covering the core logic of parameter adjustment, practical calculation formulas, and optimization cases.This helps users to raise processing efficiency and precision, and avoid problems such as overheating or insufficient energy.

Why do we need the golden ratio?

The biggest headache when we use laser cutting and engraving is setting the parameters--if the power is too high, it will burn the material, and if the speed is too fast, it won't cut all the way through.At this moment, the coordination of power and speed becomes the key.The core of the golden ratio calculation method is to find the balance point between the two, saving time while guaranteeing effectiveness.

How do you calculate the golden ratio?

Here is a formula that has been proven to be effective:

Golden ratio = Laser power (watts) / Scanning speed (mm / s)

The logic behind the formula.

For example, if you use a 100W laser and set the speed at 20mm / s, the ratio is 5.If the number is too large, it may damage the material, while if it is too small, there may not be enough energy.After extensive testing, it was determined that the ratio should be controlled between 3 and 8 for metal materials, and 2 and 5 for non-metal materials.

Practical adjustments.

First do a small-scale test.

Don't rush to put in big pieces! Cut a few small pieces from the leftover scraps, and start by trying out a low proportion.For instance, with metal plates, you can first try a ratio of 4 (such as 80 watts of power to 20 mm / s speed), and then fine-tune the ratio according to the smoothness of the cut.

It depends on the material.

When processing, keep a close eye on the material's reactions. If there's too much smoke, that means the power is too high. Quickly reduce the power or speed up the cutting. If you cut for a while and nothing happens, try increasing the ratio by 10 %.

Solutions to Common Problems.

But what about the rough edges?

The problem is that the speed was too fast. We lowered the speed by 15 %, and at the same time lowered the power by 5 %, so that the ratio remained stable.For example, the original 100W / 30mm / s (ratio 3.3) has been changed to 95W / 25mm / s (ratio 3.8).

How can we solve the problem of material deformation?

This is usually caused by a local area being too hot.Try to break the process up into stages. Use low power at high speed (2-3) for the complex parts of the design, and use high power at high speed for the simple, straight parts.

Don't forget to maintain your equipment.

Remember to clean the optical system every month, especially if the power suddenly becomes unstable.Don't be lazy about power meter calibration. Do it at least once every six months, to ensure the accuracy of the data on which you base your calculations.