Traceability marking for metal

Hot mill manufacturers are required to accurately identify sheets, blocks, slabs, rolls or coils of hot metal both for mill record-keeping purposes and for their end customers. They are also required to mark these products with certain identification markings. These markings provide an “identity” for the product, thus enabling the manufacturer and the end-user to look up the manufacturing origin and history of the product in a database.

Traditional printed label materials will melt under these conditions because coatings and adhesives burn at high temperatures. Labels may also fail when they are exposed to oils and chemicals during hot metal processing or scraping and scuffing during transport.

Cajo´s unique laser technology enables the identification to be created on-site and even on the fly, according to production line speed, and to be automatically and permanently marked to the hot mill products. The markings can include 2D codes, text and/or numbers.

For more information about barcode identification and traceability in the metals industry:

Cajo Technologies designed its traceability marking solution for metal industry to withstand the extreme temperatures, chemicals and hot oils common in hot metal processing and to meet the requirements of production line speeds.

Sophisticated marking solutions for safety-critical components in the automotive industry

We’ve all heard news stories about, or personally experienced product recalls in the automotive industry. There is no doubt that being able to trace each component in a motor vehicle is of critical importance when the safety of so many individuals depends on each part working correctly.

For this reason, automobile manufacturers and automotive component suppliers use various types of alphanumeric codes, bar codes, or data matrices to mark their products – referred to as “traceability codes”. When applied and monitored correctly, these traceability codes can be used to locate and determine the performance of vehicle parts for years after they reach the end consumer.

Perfect markings, best return on investment

Often, marking automotive parts that are used intensively for many years, are very small, or are made of difficult to mark materials can lead to issues in creating the ideal level of traceability needed by this industry. Additionally, timing and cost constraints require parts to be marked quickly and accurately every single time.

When considering various marking system options, laser marking stands out due to its’ ease of integration, durability of markings, speed of throughput, and continuous uptime. Laser marking systems can be configured in numerous ways because the accuracy and durability of the marking does not depend on direction the laser points or contact with the workpiece. The cost per part can be lowered due to the speed of laser markings and because laser marking systems do not require regular maintenance or costly additives. Lastly, they are not prone to the issues that often cause downtime with other marking solutions, avoiding headaches for manufacturers.


  • CASE: Traceability markings are the glue that binds all the processes in an enormous metal manufacturing facility

    Direct part marking, Identification marking, Marking on the fly, Product marking, Traceability marking for metal

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  • CASE: Traceability in automotive industry: micro-sized data matrixes to car parts of galvanized steel

    Direct part marking, Identification marking, Traceability marking for metal

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  • CASE: Halton Marine: CO2 laser replaced by Cajo laser marking system

    Identification marking, Product marking, Traceability marking for metal

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  • CASE: Inkjet replaced by integrable Cajo Tailor laser marking system

    Direct part marking, Identification marking, Traceability marking for metal

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  • CASE: Challenges to find a suitable marking solution for steel wires

    Brand protection, Cable marking, Identification marking, Marking on the fly, Traceability marking for metal

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