How to Adjust the Laser Parameters to Reduce the Smell of Rubber

It provides a detailed explanation of how to effectively control the odor problem by adjusting the laser power, scanning speed, and frequency.These manuals include detailed operating procedures and practical techniques to help operators improve their skills and ensure the safety of the production environment.

Why is there a strange smell from the rubber?

The rubber material undergoes a thermal decomposition reaction when exposed to the laser beam. When the temperature exceeds 200 degrees Celsius, the sulfur, plasticizers and other components of the material volatize and produce a pungent odor.This problem is especially evident in natural rubber and high-sulfur synthetic rubber.

A key parameter adjustment plan.

Lowering the laser power.

I suggest that everyone start their tests at 60 % of the rated power.For example, if the machine's maximum power is 50 watts, you can set it at about 30 watts.Excessive power not only burns the material, it also accelerates the decomposition of organic matter.The power is gradually increased in steps of 2 watts until the lowest power is found that will clearly mark the part but not cause burning.

The first step is to speed up the scanning.

Increasing the marking speed from the default 800mm / s to between 1200mm / s and 1500mm / s can effectively reduce the time the laser beam is in contact with the material.Just as one stirs food quickly to prevent burning, rapid imaging allows heat to dissipate before it accumulates inside the body.But you have to be careful not to go too fast, because that could cause the marks to come out unclear.

Optimizing frequency parameters.

It is recommended that the frequency be set between 20 and 50 kHz.High frequency pulses (such as 80 kilohertz) can cause heat to accumulate, while low frequency (20 kilohertz or below) can cause excessive burning.When testing, one can observe the marking effect.

Aid to improvement.

Install an exhaust system.

Install a two-stage air filtration system around the equipment, and recommend that the air flow speed be no less than 3m / s.It's like putting an exhaust fan in a kitchen: removing the fumes as they're produced can significantly improve the work environment.It is also very important to replace the activated carbon filter (recommended once a month).

Techniques for pre-treating materials.

The surface of the rubber is cleaned with alcohol before the label is applied, to remove any traces of mold release agent.If conditions permit, it is possible to experiment with pre-roasting at low temperatures (60 ° C for 30 minutes) to evaporate off some of the easily decomposed substances in advance.This method is particularly effective for silicon rubber products.

Wet marking area method.

Wet cotton swabs can be used to cool the area to be etched, and then the process can begin.This method is very useful in emergency situations, but you have to be careful to control the water flow so it doesn't affect the accuracy of the markings.