Laser cutting for acrylic signs

Laser cutting and laser engraving advertising signs, displays, illuminated advertising, printed signs, signage, exhibition stand construction and shopfitting.The creative “finishing” with a laser cutting machine transforms a printed acrylic sheet or wooden board into a finished product with a higher value. From simple rectangular advertising signs to complex contours and markings, anything is possible with Thunder laser cutting machines. Sales@thunderlaser.com +86 18103043363

Main process parameters of laser precision cutting acrylic material:

Laser Power: Laser output power is the output energy of the laser system. Laser cutting represents the ability of the laser beam to melt the material per unit time. Laser power is the basic numerical value of laser processing, which directly determines the objects that can be processed by the equipment. For example, the power requirements of paper and sponge board are very low, tens of watts are enough; the power requirements of wood, acrylic and metal sheet are relatively high, ranging from tens of watts to hundreds of watts; and the power requirement of thick metal sheet is the largest, ranging from kilowatts to kilowatts.

Laser speed: laser speed is the moving speed of the laser head. The higher the laser cutting speed is, the shorter the cutting time is, and the higher the laser cutting production efficiency is. However, when the other parameters are fixed, the laser cutting speed is not linearly related to the cutting quality. A reasonable cutting speed is a range of values below which the energy of the laser beam remains too much on the part surface to form an overburn, and above which the energy of the laser beam is too late to completely melt the part material, resulting in an impenetrable cut.

Air pressure: The air pressure generally refers to the air pressure of the auxiliary gas. When the laser head emits light to cut materials, the auxiliary gas can help the cutting speed of laser processing and blow away the molten materials. The air pressure of the auxiliary gas also affects the cutting efficiency of the cutting machine. If the thickness of the material processed by laser cutting is increased or the cutting speed is slow, the gas pressure should be reduced appropriately. Cut with lower air pressure to prevent frosting.

Focus: The laser output is finally focused by a special lens at the point with the highest power density, and the focal spot diameter is proportional to the focal depth of the focusing lens.The key point of laser cutting is to set according to the different thickness of different positions. The correct focus position is an important condition for obtaining stable cutting quality. According to the different materials and processing requirements, the focus position is also different. Generally speaking, there are three options for the focus position, namely, the focus is above the surface of the material, on the surface of the material, and inside the material. The actual processing needs to be determined according to the situation.