- Home
- About HITEC
- Products
- Samples
- Service and Support
- News
- Contact HITEC
Many manufacturers still rely on ink printing, labels, stamping, or mechanical engraving. These methods present several long‑term problems:
Ink markings fade, smear, or peel during storage and transportation
Labels fall off or become unreadable in outdoor environments
Mechanical engraving damages the zinc coating and causes rust
Stamping deforms thin galvanized sheets
High consumable cost and frequent maintenance
These issues directly affect product quality, traceability compliance, and customer trust.
Fiber Laser Marking: The Best Solution for Black Sheet Galvanized Steel
Fiber laser marking machines provide a non‑contact, coating‑safe, and permanent marking solution for galvanized black sheets.
Unlike engraving, fiber laser marking uses precisely controlled laser energy to create high‑contrast surface marks through micro‑oxidation or color change, without penetrating or removing the zinc layer.
This makes it ideal for marking zinc‑coated steel while preserving corrosion resistance.
The laser interacts with the surface coating only
No physical contact or mechanical stress
No consumables such as ink or chemicals
Minimal heat input, no sheet deformation
The result is a clean, dark, and permanent mark that remains readable after bending, welding, painting, or outdoor exposure.
1. Protects Zinc Coating
The marking process does not damage the galvanized layer, preventing corrosion and extending product lifespan.
2. High Contrast & Permanent Readability
Produces clear black or dark gray marks suitable for:
QR codes
Barcodes
Serial numbers
Batch and heat numbers
Logos and compliance markings
Fiber laser systems can be easily integrated into:
Coil processing lines
Sheet handling conveyors
Robotic production cells
PLC‑controlled manufacturing systems
4. Zero Consumables, Low Operating Cost
No ink, no labels, and no tooling replacement significantly reduce long‑term operating expenses.
5. Stable Quality and High Speed
Consistent marking quality with high processing speed meets mass production requirements.
Typical Applications in the Galvanized Steel Industry
Black sheet galvanized ID marking
Production date and batch code marking
QR code traceability for smart factories
Brand logo marking on finished sheets
Compliance and certification marking
1. For most black sheet galvanized applications, the following configuration is recommended:
2. Laser Type: Fiber laser
3. Power Range: 20W–500W (depending on line speed)
Manufacturers adopting fiber laser marking technology report:
Improved traceability and compliance
Reduced scrap and rework rates
Lower maintenance and operating costs
Better consistency across production batches
As regulations and quality standards continue to rise, laser marking is no longer optional—it is becoming a requirement for galvanized steel processing.