Technology

	Marking Technology Download Different Process Comparison Dot Peen Marking Peening is a permanent direct product marking (DPM) process used to identify alphanumeric characters, 2D codes (including Mil-Std 130 UID compliant Data Matrix codes), bar codes, custom graphics and logos onto metal or hard surfaces. The process of dot peening encompasses the use of a multiple-axis stylus point which hits the part like a ball-peen hammer and leaves a small dimple. It is an impact marking process that is either electrically or pneumatically driven depending on what material is used. The most common materials used for peening are metals that have hardness ratings up to 62. Other materials such as plastics and hardwoods are good peening candidates. Scribing Marking In dot peen marking a vibrating stylus (carbide tipped) is guided across the material using X and Y axis to form the desired characters, the plate or object to be marked needs to be clamped firmly. The scribing process also uses an X and Y carriage system but in this case the stylus is plunged into the material and dragged through the material to create a continuous line. As the applied forces are considerably higher than the dot peen process the component clamping needs to be extremely rigid. Laser Marking & Engraving A beam of concentrated laser light is guided over the metal plate using a system of mirrors to create the mark. By varying the speed, pulse frequency and focus distance various types of mark can be applied ranging from engraving to annealing. As no force is applied to the plate being marked the fixturing needs only be positional rather than clamping. Marking lasers utilise a graphics based interface whereby any text, logos, etc that can be shown on a PC screen can also be marked onto a plate. Lasers offer the best results when it comes to marking unique 1D and 2D codes. Various types of Lasers are available with us for marking on metal and non-metal objects. Pulsed DPSS Diode Lasers Pulsed Fiber Lasers CW Fiber Lasers CO₂ Lasers CO2 Lasers are ideally suitable for engraving and marking on plastics or non-metal surfaces. Only exception is Anodized Aluminum which can be marked with CO2 Lasers. However, you also get a good result with CW lasers for marking on non-metals. DPSS & Fiber Lasers operating in wavelength of 1064nm are excellent for metal marking application.

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