Laser marking machines etch, anneal or engrave a permanent identifier onto a finished part: serial numbers, DataMatrix and QR codes, logos and compliance symbols that stay legible for the life of the part. Runs as the next station after a welding line, or as a standalone cell on any line that needs part-level traceability.
Reach for laser marking when the part needs a permanent, machine-readable identifier that will not rub off in normal service.
Unique serial numbers per part, batch codes, DataMatrix, QR and 1D barcodes. Numbers stream from ERP or MES so every unit gets its own identifier. The biggest category on most lines that add a marker.
Logos, nameplate blocks, UDI text and regulatory notation (WEEE, RoHS symbols), placed the same way across every unit.
Deeper cuts into hardened metals for permanent asset tags and nameplates, plus thin-material profile cuts on shim stock and foil. Higher power draw, slower cycle, more heat to manage.
Mark parts immediately after welding on the same cell. Buyers who came for a welder close the traceability loop with a marker on the line: laser micro welders, pulse arc / micro TIG and resistance spot welders.
If your job is to connect two parts rather than identify them, one of the three welding lines is the pick: laser micro welders for autogenous seams, pulse arc / micro TIG for filler work, or resistance spot welders for tab-and-terminal production. If the identification is temporary (peel-off label, run-once workshop tag, code that only needs to survive weeks), a laser marker is overkill and a printed label closes the job. Honest note on durability: mark life is workflow-specific. Salt spray, high-temperature ovens and aggressive cleaning cycles will lift a shallow surface pass, so parts headed through any of those should be spec'd for annealing or deep engraving from the start and tested on a real production sample before the spec is locked.
See how marking fits alongside the three welding lines for your material and volume.
Three laser families cover most marking work. The material dictates the pick more than any other single factor.
| Fiber (1064 nm family) | UV (355 nm family) | CO2 (10.6 μm family) | |
|---|---|---|---|
| Form factor | Enclosed benchtop with scan head | Class-1 enclosed, bench or inline | Bench cabinet or gantry frame |
| Best-fit materials | Metals across the board, some engineered plastics | Heat-sensitive polymers, medical plastics, glass | Wood, paper, leather, most plastics; not bare metals |
| Mark type strengths | Annealing, deep engraving, dense DataMatrix | Cold marks on plastics without char, fine barcodes | Line-art on organics, wide-format signage |
| Throughput | General-workhorse, high on serialization | Moderate; pulse energy is the trade for cold marking | Moderate to high, depends on pass depth |
| Automation | Rotary, index tables, robot handshake, inline | Same options as fiber; common on medical inline cells | Rotary and index tables; less common on high-speed cells |
| Part size / working area | Set by lens; swap optics to widen envelope | Similar to fiber; smaller precision fields | Larger native fields for signage and wide parts |
| Footprint | Compact enclosed cabinet | Compact, more thermal management | Larger frame; tube length drives footprint |
The spec lines that decide whether a marker fits your part and your line.
That's a lot of variables. Send us your part and the mark you need, and we'll come back with a recommended configuration and a test mark.
Send my part for evaluation →Four steps we walk through with new buyers:
Material, mark type (serial, DataMatrix, logo, deep engrave, anneal), volume, and downstream chemistry or heat exposure the mark has to survive.
We run the mark on your material, photograph the result, and stress-test it if the workflow calls for it.
Recommended laser family, parameter set, fixture concept and throughput at your target cycle.
Small trial run through the machine before you commit to the full order.
Mark parameters tuned to your material and target contrast, with the engineer who set them up available for follow-up.
Part holders, rotary attachments and indexed pallets sized to the parts you actually run.
File templates, font handling, variable-data setup and ERP or MES integration walkthroughs.
Q-switch service, protective glass and fume-extraction filters. Not zero-consumable; we keep the restock loop honest.
Remote operator onboarding plus software walkthroughs, with recorded sessions the second-shift operator can rewatch.
Test marks available before you place the order.
No obligation. Physical parts or high-resolution photos.
Fiber benchtop ships faster than custom UV or inline cells.
Deposit up front, balance before shipment. Trade references for repeat accounts.
PCB serials, connector marks and component branding.
See electronics marking →UDI marks and hygienic annealed serials on stainless instruments.
See medical device marking →Traceability marks on sensor housings, connectors and terminals.
See automotive marking →Asset tags, nameplates and fluid-line labeling.
See industrial marking →Send the part. We run the mark, log parameters and return the result before you commit.
Laser welding, pulse arc / micro TIG, resistance spot and laser marking through one account.
For dealers who need their brand on the equipment, we scope private-label lots.
Layout files, variable-data streams and encoder setup often decide whether a line runs. We support the software side alongside the machine.
If evaluation shows your part is better served by a different process, even one we don't sell, we tell you. We'd rather lose the order than ship the wrong machine.
You don't get handed off after shipment. We stay with your operator until mark parameters, fixture setup and the software file are set.
Protective glass, Q-switch service, fume-filter restock and software updates through our supply chain, so year-one downtime doesn't drag on.
The material sets the answer. Fiber couples cleanly into metals and many engineered plastics; UV runs cold enough for heat-sensitive polymers, medical plastics and glass; CO2 fits organics like wood, paper, leather and most non-UV plastics. Send the material and the mark and we will narrow it before quoting.
Workflow-dependent. Annealing and deep engraving outlast a shallow surface pass; heavy chemistry or high-temperature ovens can lift the shallowest marks. Test on a real production sample before locking a spec.
Yes. A rotary attachment turns the part in sync with the scan head; the UV / fiber / CO2 choice still follows the material. Ring interiors, shafts and small tubes are common installs.
Yes. Variable-data support is standard, and we walk through the ERP or MES integration during install so the first shift after commissioning prints unique numbers.
Yes on plastics and coated metals; both off-gas during the mark. Extraction is an operator-safety and regulatory item, and belongs in the machine spec from the start.
We run your mark on your actual material, photograph the result and recommend a marking configuration before you commit to a machine.
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