Five Common Mistakes in the Setting of Parameters Affecting the Accuracy of Laser Marking

The precision of laser marking is significantly affected by the setting of parameters, and incorrect adjustment may lead to blurry markings or low efficiency.The article explains the five most common mistakes made in setting parameters such as power, speed, and frequency, helping users avoid operational blind spots and improve marking effects and machine stability.With the correct parameters, you can easily optimize the quality of the processed product.

Misconception # 1: "The higher the wattage, the better.

Where is the problem?

Many customers think that increasing the power will make the marking clearer, but this only burns the material or leaves it with rough edges.For example, when marking plastic, too much power will melt and deform the surface, and the characters will run together in a blob.

Adjusting your thinking.

First consult the recommended power range of the manufacturer, and start testing at the middle value.Metal objects can be scanned at high resolution, but non-metal objects such as wood and leather require a lower resolution, and the speed must be adjusted to ensure clarity.

Mistake Two: Inappropriate speed and frequency.

Why is there a double image?

If the laser is set to move too quickly, the laser points will be spaced too far apart, causing the image to break up or appear blurry.This is particularly obvious when carving fine-lined script.

The golden rule of pairings.

It's a good idea to remember the rule, "High speed, high frequency; low speed, low frequency.When doing detailed patterns, we recommend a speed of no more than 800mm / s, and a frequency of 20kHz or higher, so that the laser points are closely connected.

Misconception 3: The focal length is ignored.

The result of being out of focus.

Even if the parameters are adjusted perfectly, a deviation in the focal point of just 1 mm can make the mark fuzzy.The problem is particularly acute when marking curved surfaces.

Quick calibration techniques.

After every change of materials or work piece, a focusing test is done using scrap.A red light can be used to locate the size of the light spot, and the smallest spot is the best focal length.If your budget allows, an autofocus module can save a lot of trouble.

Mistake four: A one-size-fits-all approach to spacing.

If you fill in too tightly, you'll make a mess.

Many people adjust the spacing of their fill to less than 0.05 mm in pursuit of a solid look. The result is that the processing time is doubled, and the heat buildup can burn the material, especially thin sheets of metal.

The secret of adjusting to demand.

For ordinary graphics, a spacing of 0.1-0.2 mm is sufficient, but for deep carvings it can be reduced to 0.08 mm.For precision graphics such as QR codes, it is suggested that the user first try 0.15 mm, and then gradually adjust the size up or down.

Myth 5: The cooling system is not important.

The hidden traps of temperature.

The longer a laser works, the more its temperature varies and the less stable its output becomes.In particular, the high temperatures of summer mean that a perfect print in the morning can turn out with color differences or unevenness in the afternoon.

Long-term maintenance plan.

The water-cooling system filters must be cleaned quarterly, and the air-cooling system must have open air intakes and outlets.If you have worked for four hours, it is recommended that you stop the machine for 15 minutes.Before processing highly reflective materials, make sure the cooling water temperature is between 22 and 25 degrees Celsius.