Laser marking is an ink free, contact less, direct on part, permanent marking solution, fulfilling regulations, adding discrepancy to ones parts by using a fine spot laser beam focussed on the surface of the product. The laser beam slightly alters the surface without burning it typically inducing a color change within the material, and hence no surface modification.
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Annealing Laser Marking
Annealing marking is an oxidation process used on carbon containing metals by applying heat through laser on the surface of any metal. Annealing marking generally gives a black mark with a smooth finish, but color may vary from brown, red, green etc. depending upon the heat used for marking.
Some key points of annealing:
Used on carbon-containing metals such as Titanium, Steel, Stainless Steel, Iron
Oxidation process can result in a variety of colors
A slower, more drawn-out process
Common in the medical industry applications such as internal tracking and branding.
Carbon Migration Laser Marking
Carbon migration is another type of laser marking in which a metal or metal alloy is heated, causing metal to chemically bond with its carbon molecules. This bonding brings the carbon properties to the surface of your material. When this occurs, it will often result in a dark laser marking that can even be black. This type of marking is a faster process than annealing because it provides a high amount of heat to a smaller area within a more rapid time period.
Some of the key-points of carbon migration laser marking:
Only metals and its alloys containing carbon such as Steel, Stainless Steel, Carbide, Titanium can utilize this marking
Heating process migrate carbon to the surface
Produces dark markings
Heat is applied rapidly.
Foaming Laser Marking
Foaming is a laser marking technique used only on polymers. Laser foaming is carried out by creating a molten burn on the surface. The molten surface creates an atmosphere of foaming gas bubbles. Foam laser marking is usually carried on a polymer which results in a light color.
Some of the key-points of Foaming Laser Marking:
Used only on polymers
Produces light & smooth markings
Material is melted, creating foam and gas bubbles
Coloration Laser Marking
Coloration laser marking is the process of adding color to a polymer or metal by controlling laser and scanner parameter such as pulse frequency, pulse width, power, speed and more. Coloration on polymer occurs by foaming process while it occurs via oxidation in metals.
Some of the key-points of Coloration Laser Marking:
Can be utilized for both metals and plastics
The process for coloration varies, depending on your material
Creates contrast in both colored and black and white materials
Color results are based on an oxidation process
Markolaser is a global supplier of excellent European laser marking machine systems. All our laser marking machine are built with European laser marking machine building technology. The heart of laser marking machines is laser marking machine generator which we import from Europe and the Galvos used in all our laser marking machines are from Germany. However, this does not mean that Markolaser laser marking machines are expensive. Our laser marking machines are built with best price and quality in mind. Markolaser laser marking machine is high quality at very reasonable cost.
Basic questions and their answers about laser marking & engraving
there any chance of the product getting damaged after being subjected to laser beams?
Ans. Laser marking is a controlled marking process. There is a very slight loss of surface material when the laser beams mark, clean, ablate or color the surface. The product does not get damaged due to the regulated effect of laser beams on the surface of the product. The laser marks are permanent and do not fade until and unless it is scratched with sharp edges.
is a Laser Marking Machine?
A laser marking machine essentially marks a product or a sample by various marking techniques such as
engraving, foaming, Annealing at different speeds and with different effects depending upon the composition
of the sample and its inherent light absorption properties.
5 What is a Fiber Laser Marking Machine?
A Fiber laser marking machine uses an optical fibre (active medium) as a wave guide to transmit a coherent beam of optical radiation that permanently marks various materials of different compositions through techniques like engraving, foaming, annealing etc. at different speeds and with different effects.
6How much is a laser engraver?
Parameters like: Wattage of the laser source, beam output quality, the active medium used, the wavelength of the laser beam, scope of marking on materials, the surface to be marked, applications required for; are some essential deciding factors that determine the cost of an engraver. High-quality Laser engravers can cost as low as 10,000$ (USD) to as high as 100,000$ (USD).
7 How does a laser marking machine work?
Ans: During laser engraving (a marking scheme), the surface of the job/sample/work piece is melted and vaporized by the heat generated by the laser beam. This induces a change in the composition of the material at the point of the laser incidence. The gorges/crevices thus formed on the surface of the work-piece in this way become the final engraved result.
8 How is laser marking different from laser engraving?
Ans: Laser engraving is a subset of laser marking wherein which the work-piece upon which the laser is incident, experiences a change in composition by means of ablation and vaporisation of its laser incident area. Laser marking, however, involves several techniques under its umbrella of processes like engraving, annealing, foaming, staining etc.
9What materials can be laser engraved?
Ans: Materials that can be laser engraved/Marked include Stainless steel, Aluminium, Brass, Bronze, Titanium, Silver, Gold, Ceramics, Polymers, Stone, Granite, Wood, Cork, Cardboard, Tiles, Glass among a few.