GRAFMETAL ceramic paste is intended to be used for marking metals with ordinary CO2 lasers normally used i.a. for cutting acrylic.
One may find the following GRAFMETAL products for marking metals with lasers:
Universal paste and aerosol: for CO2 lasers, very low cost, marking metals, possibility of steel engraving, possibility of cutting very thin steel sheets, wiping off with a dry cloth or with a paint thinner, greyish-black colour
Ceramic rinseable fluid and aerosol: for CO2 lasers, marking metals, working with high speeds, rinsing with water, black colour
Ceramic paste: for CO2 lasers, marking metals, working with high speeds, wiping off with a dry cloth or with a thinner, black colour
Methods of working with each of this product types is different, therefore one may get acquainted with description of them before choosing one.
Apart from that there are also GRAFMETAL products which allow for using lasers to:
chemically etch glass and metal
make prints on clothing
GRAFMETAL ceramic paste is used in a following way:
it is deposited on a metal object to be processed
the object is irradiated with a CO2 laser (right after deposition of a product - it is not needed to wait for drying), air blow does not interfere with laser marking, it may be helpful as it levels paste layer
non irradiated paste is wiped off e.g. with a paper towel, however it can also be collected and used again
The paste heats up and hardens when exposed to laser light, resulting in a black layer that gives a marking effect on most types of metals.
GRAFMETAL ceramic paste can be used to mark most commonly used metals.
The product may be used both for marking already made metal objects as it may be used for preparing new metal plates. To do that it is needed to cut metal sheet first, which may be accomplished with the following methods:
sheets up to 1.5 mm (0.06") thick (including steel): sheet metal guillotine, electric sheet metal shears
sheets up to 0.5 mm (0.02") thick (including steel): manual sheet metal shears/scissors
sheets up to 0.25 mm (0.01") thick (including steel): tailor shears/scissors
Ceramic paste allows permanent marking of chrome surfaces, even without degreasing.
Ceramic paste can be used to mark finished metal objects.
Aluminum processing is not a problem.
GRAFMETAL ceramic paste is easy to use, and with it you can get very interesting results and fulfil many new and interesting orders.
Example processing parameters:
Steel, stainless steel, acid resistant steel, galvanized steel: 80 W x 100% x 300-500 mm/s (12-20 in/s)
Aluminum, copper, brass, zinc: 80 W x 100% x 100-400 mm/s (4-16 in/s), The better cleaned or rougher the surface, the higher speed can be used, for example, aluminum after cleaning with 2500 grade sandpaper: 200-400 mm/s (8-16 in/s), aluminum with mirror finish: 100-150 mm/s (4-6 in/s)
Chrome plated surfaces: 80 W x 100% x 50-150 mm/s (2-6 in/s)
(reference value: 2 mm (0.08") thick plexiglass cutting - CO2 laser, 80 W x 100% x 30 mm/s (1.2 in/s))
Yield: 7-10 m2/liter (75-110 sq ft/liter)
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