Direct Part Marking (DPM) with Laser Marking Systems
Direct part marking is the process of creating permanent markings on the surface of a part. The most common forms of part identification are data matrix codes, QR codes, and serial numbers. To validate the marking’s legibility, manufacturers use 2D barcode readers that provide grades based on the AIM DPM standard, also known as ISO/IEC TR 29158.
Used for part and product traceability, laser marking systems ensure that parts can be traced through their complete lifecycle. For metal parts marked in harsh environments, marks produced with a fiber laser can even withstand surface treatments.
Why Choose a Laser System for Part Marking?
Mark at the Start
With the Laserax technology, it’s now possible to move the marking operation at the start of production. This technology protects 2D codes from surface treatments, including e-coating, shotblasting, powder coating, and heat treating.
Get readable marks regardless of your manufacturing process. Our team of experts will make sure that the laser process offers you complete traceability.
Lasers generate permanent markings by heating the surface of the material. The resulting reaction creates black and white marks directly on the part’s surface.
You can mark a wide variety of materials using fiber and CO2 lasers. Each type of laser is specialized at marking different materials.
Losing trace of parts marked with low-quality codes compromises traceability. If traceability is mandatory, those parts may need to be scrapped.
Laser systems provide unmatched readability rates, so you’ll never need to worry about low-quality codes. Because they’re contactless and use no consumables, laser systems are most reliable, capable of consistently generating high-resolution marks.
About Other Part Marking Methods
Dot peen marking
Like laser marking, dot peening provides permanent results. This marking method creates marks by hitting parts with a stylus. While the result is generally permanent, those types of markings have a low contrast and aren’t as resistant to surface treatments.
Depending on who you talk to, inkjet printing may or may not be classified as a direct part marking method. Although it creates markings by propelling ink directly on the part, the resulting ink layer isn’t permanent. Ink markings can be erased or severely damaged as a result of abrasion. Ink can also partially clog the nozzle, requiring more maintenance and diminishing the quality of the codes over time.
Labeling isn’t a reliable traceability method. It isn’t even a direct part marking method. Because labels are glued to the surface, they may fall off and are definitely not permanent. Traceability could be compromised if the labels are accidentally removed anywhere in the supply chain.
Read more on the subject: Automotive Part Marking Technologies - Which One to Choose?
Laser Marking Solutions
Laserax offers marking solutions designed to integrate direct part marking anywhere in production lines. Our lasers are the fastest on the market. They will keep up with high-speed applications to make sure that the marking operation isn’t a bottleneck.