Marking Systems in the Steel Industry
We create machines to mark metal parts with different applications in the iron and steel industry.
At COUTH, we have more than 70 years of experience in the design and manufacture of industrial marking systems in the steel industry. We specialize in developing highly efficient marking solutions for demanding sectors such as steel, where traceability and quality are crucial.
Identification in the steel industry goes far beyond the marking of metal parts, as it is the basis for ensuring traceability, quality control, and protection against counterfeiting. Each marked part can be traced from its origin to its final destination, complying with international regulations and ensuring the integrity of the supply chain.
If there is one thing that has been learned throughout industrial development, it is that all parts and components of the machinery used, as well as the objects produced by it, must always be tracked. Therefore, proper metal marking is one of the most effective and common practices during the production of various parts.
Thanks to this tracking, the effectiveness of each part or element produced can be accurately determined, and appropriate safety measures can be taken in the event of loss, defect, or failure. In fact, in the case of the steel industry, due to the materials it works with, such tracking is crucial.
PARTS
METAL MARKING
What does the marking of metal parts consist of?
Marking metal parts is a process in which an engraving or mark is made on the material containing a series of data, either in the form of text or numbers, which provide various information about the manufacture of the part itself.
The materials that can be marked are diverse, however, in the steel industry, marking on stainless steel and metals such as gold, for example, are processes that have been standardized.
Metal marking techniques
At COUTH, we manufacture markers with different marking techniques for metal and stainless steel:
Laser marking
One of the most innovative techniques used in the metal marking industry in the steel sector, especially for mass production. This system uses a laser to mark the material with high precision. One of its main advantages is the exceptional durability of the machine, which ensures consistent performance over time.
Laser marking in the steel industry uses a focused beam of light to modify the surface of the steel, creating permanent, high-contrast marks. It can be done by annealing (controlled oxidation), engraving (removal of material), or color marking, depending on the type of steel and the type of laser.
Advantages:
- No physical contact: does not deform or damage the part.
- High precision: ideal for complex codes, logos, and variable data.
- Speed and efficiency: suitable for large volumes and automated lines.
- Durability: marks resistant to abrasion, chemicals, and heat.
- Low maintenance and no consumables.
Applications in the steel industry:
- Identification of coils, sheets, bars, and components.
- Marking of barcodes, QR codes, and Datamatrix codes for traceability.
- Marking on stainless steel for the medical, automotive, and construction sectors.
Micro-percussion marking
This is a metal marking technique that uses dot impact on the metal surface. This technique produces accurate markings that are easy to read on the part.
How does it work?
Micro-percussion marking in the steel industry uses a carbide punch, controlled by CNC (Computer Numerical Control), which impacts the surface of the steel, generating a series of micro-impacts that form characters, numbers, or codes. The depth and density of the marking are adjustable.
Advantages:
- Deep and permanent marking, even after surface treatments.
- Resistant to harsh environments and handling.
- Low operating cost: only requires replacement of the punch.
- Flexible: suitable for large, irregular, or difficult-to-move parts.
Applications in the steel industry:
- Marking of ingots, bars, profiles, and large parts.
- Identification of batches, serial numbers, and traceability in forging and casting processes.
- Integration into automated production lines.
Scratch marking
Using a tungsten carbide or diamond stylus, metal parts and even certain types of resistant plastics can be marked by making fine, highly precise incisions. It is also a silent marking system.
How does it work?
- Scratch marking in the steel industry uses a diamond-tipped or carbide punch that slides over the metal surface, engraving continuous, deep lines. The process is quiet and produces highly legible marks.
Advantages:
- Clear, deep, and aesthetically superior marks.
- Quiet operation, ideal for noise-sensitive environments.
- Low maintenance and high equipment durability.
Applications in the steel industry:
- Use on stainless steel parts, alloys, and precision components.
- Marking of serial numbers, logos, and codes on finished parts.
- Ideal for components where legibility and aesthetics are a priority.
Industrial marking is a fundamental pillar of the modern steel industry. At COUTH, thanks to our experience and advanced technology, we guarantee marking solutions tailored to the identification, traceability, quality, and safety requirements of steel.
The choice of the right technology—laser, micro-percussion, or scratching—depends on the specific requirements of each application, but all share the reliability, durability, and integration capabilities that characterize us as a leading company in the sector.
Traceability in the steel industry
Traceability in the steel industry is a fundamental pillar for ensuring quality, safety, and efficiency throughout the steel supply chain, as it allows the history, application, and location of each product or batch to be tracked, from raw material to final product, using recorded data and standardized procedures.
What is traceability in the steel industry?
According to ISO 8402, traceability is “the ability to trace the history, application, or location of a product using recorded data.” In the steel industry, this involves documenting each stage of the process: from the receipt of the ore, through smelting, rolling, heat treatment, to the delivery of the final product to the customer.
Importance of traceability in steelmaking
- Quality control: It allows detailed records to be kept of process parameters, materials used, and inspection results, ensuring that each piece meets the required standards.
- Regulatory compliance: The steel industry is governed by strict regulations and standards of quality, sustainability, and safety, which require robust traceability systems.
- Incident management: In the event of any defect or problem, traceability makes it easy to quickly identify the origin and scope of the affected batch, minimizing associated risks and costs.
- Transparency and trust: It provides key information for auditing processes, improving efficiency, and strengthening the trust of customers and regulators.
How is traceability implemented?
Traceability is achieved through systems that document and track every step of the production process, using technologies such as barcodes, RFID, scanners, and specialized software.
These systems automatically capture information about materials, operators, dates, and locations, ensuring comprehensive, real-time tracking.
For all these reasons, in the steel industry, traceability is not only a regulatory requirement but also a strategic tool for ensuring quality, safety, and competitiveness. Implementing effective traceability systems allows companies to anticipate problems, optimize processes, and respond quickly to any eventuality, consolidating their position in an increasingly demanding global market.
The importance of metal marking in the steel industry
Marking stainless steel, as well as marking metal on items such as gold ingots, is now an essential step in both the steel industry and in manufacturing and assembly processes as such.
By marking metal parts, for example, a large amount of information can be obtained that will be useful not only for the traceability of the company that manufactures the product, but also for the entire life cycle of the part, from distribution to its final use.
In short, industrial marking in the steel industry is essential for:
- Identification and traceability: It allows each part or batch to be associated with its origin, properties, and manufacturing processes, facilitating audits, recalls, and regulatory compliance.
- Quality control: Tracking each component ensures that only compliant materials reach critical applications.
- Protection against counterfeiting: Permanent and unique markings make tampering and fraud difficult, protecting reputation and safety.
What can a code marked on a part contain? Various information depending on the part itself: the date of manufacture and expiration date, the batch and serial number to which it belongs, and some other important characteristics to be noted in the marking.
Types of identification used in metal marking
There are many ways to identify materials and parts. Over the last few years, this technology has also evolved to adapt to current needs and those of each sector. Some of the most commonly used are:
- Barcode: One of the most popular codes on the market. Its bar and spacing design stores encoded information that can be read using a specific reader. One of the most recent ways of marking has been the QR code.
- DataMatrix code: Very similar to the barcode, except that its two-dimensional system has a greater information storage capacity.
- DPM or marking on the part itself: This is a system that allows individual and permanent marking of the characteristics of that particular part. It allows for greater traceability throughout its useful life.
The future of the steel industry in the marking of metal parts
The marking of metal parts in the steel industry is evolving rapidly, driven by the need for traceability, efficiency, and regulatory compliance. The immediate and medium-term future (2030-2035) will be marked by the adoption of smart technologies, process automation, and digital integration, enabling companies to respond to the challenges of quality, sustainability, and global competitiveness.
The trend is clear: to migrate from traditional methods to digital and automated solutions to improve efficiency and reduce human error.
Emerging trends and future technologies
- Femtosecond laser: Enables high-precision and durable markings, even on treated or difficult surfaces.
- Blockchain: Ensures immutable traceability and anti-counterfeiting, with pilots underway and adoption expected in the coming years.
- IoT and machine vision: Automate verification and tracking, integrating with management systems and cloud platforms.
- Nanoparticles and metal biometrics: Offer advanced security and authentication solutions, with potential for high-demand applications.
At COUTH, as experts in metal marking, we offer advanced and customized solutions for all types of industrial applications, adapting to the specific needs of each customer. Our focus is on providing accurate and durable results, regardless of the technique used.
Customized and modern solutions for the steel industry
At COUTH, we develop metal part marking solutions that can be adapted to all types of projects and the most demanding requirements.
We have high-quality equipment that uses the most advanced technology on the market, which operates perfectly in the new Industry 4.0. You can be sure that these systems integrate seamlessly with advanced technologies such as robotics, artificial intelligence, data analysis, and connectivity, ensuring optimal performance and smooth interoperability.
With us, you can obtain both ideal solutions for independent workstations and solutions that require more complex communications and integration processes within production lines.
If you are looking for the best solution for marking metal parts in the steel industry, we are the company you need. At COUTH, we carry out a comprehensive and specific diagnosis of your marking needs in order to provide you with a tailor-made project that guarantees suitable and efficient solutions for metal marking.