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Basic information of laser marking machine

Basic information of laser marking machine

Laser marking which is a broader category of methods to leave marks on an object. The technique does not involve the use of inks, nor does it involve tool bits which contact the engraving surface and wear out. These properties distinguish laser engraving from alternative engraving or marking technologies where inks or bit heads have to be replaced regularly.

Laser marking machines

A laser marking machine can be thought of as three main parts: a laser, a controller, and a surface. The laser is like a pencil - the beam emitted from it allows the controller to trace patterns onto the surface. The controller (usually a computer) controls the direction, intensity, speed of movement, and spread of the laser beam aimed at the surface. The surface is picked to match what the laser can act on.

The most common is the X-Y table where, usually, the workpiece (surface) is stationary and the laser optics move around in X and Y directions, directing the laser beam to draw vectors. Sometimes the laser is stationary and the workpiece moves. Sometimes the workpiece moves in the Y axis and the laser in the X axis.

Materials that can be marked

Natural materials

Laser marking on wood

Directly "burning" images on wood were some of the first uses of marking lasers. The laser power required here is often less than 10 watts depending on the laser being used as most are different. Hardwoods like walnut, mahogany and maple produce good results.

Plastics

Standard cast acrylic plastic, acrylic plastic sheet, and other cast resins generally laser very well.

Other plastics may be successfully engraved. Bakelite is said to be easily laser-engraved; some hard engineering plastics work well.

Metals

Laser on Stainless Steel

Using Fiber Lasers or CO2 lasers at 1,064 nm wavelength, metals can now easily be engraved using commercial systems.

Coated metals

The same conduction that works against the spot vaporization of metal is an asset if the objective is to vaporize some other coating away from the metal. Laser engraving metal plates are manufactured with a finely polished metal, coated with an enamel paint made to be "burned off". At levels of 10-30 watts, excellent engravings are made as the enamel is removed quite cleanly. Unlike most materials engraving anodize aluminum does not leave any smoke or residue.

Stone and glass

Pump laser marking machine is best choice for stone and glass.The lasers are indeed used to engrave on glass, and if the power, speed and focus are just right, excellent results can be achieved.