The AL06R/AL20R is not a
Marking Machine, but a high-power laser hardening head with "copper mirror-like" precision, directly applying the precise temperature control philosophy of laser marking machines to the field of heat treatment. A 6 kW (AL06R) or 20 kW (AL20R) fiber/semiconductor laser is shaped into a 6 × 20 mm rectangular light band via a copper reflector. Closed-loop infrared thermometry provides real-time power control at a 1 kHz frequency, achieving a hardness layer depth tolerance of 0.5–2 mm ±0.05 mm—essentially upgrading the "cold hardening" of a
Dot Peen Marking Machine to a non-contact, deformation-free laser version, while retaining the high efficiency of a
Pneumatic marking machine.
Application Approach
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- Metal Surface Hardening: The same laser is used in the morning to harden gear teeth to 55 HRC using an AL06R laser. In the afternoon, the hardening head is removed, a
Laser Marking Machine galvanometer is installed, and a 0.2 mm deep batch number is engraved on the tooth root. This achieves a "harden first, then mark" dual-purpose operation, reducing one clamping step compared to traditional
Dot Peen Marking Machines.
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- Gradient Hardness Control: By segmenting the rectangular light band of a 20 kW AL20R laser, a 1 mm transition layer can be obtained on automotive crankshafts, replacing the "abrupt hardening" of induction hardening. Subsequent use of a Pneumatic marking machine to eliminate hardening cracks is unnecessary.
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- Aerospace Titanium Alloy Brackets: After hardening with a 6 kW copper mirror, the surface hardness increases by 38% while maintaining a 4 mm thin wall without warping. Subsequently, a low-power Marking Machine mode is switched on the same optical path to engrave a DataMatrix. The traceability code is coaxial and collinear with the hardened band, with an error of < 0.02 mm.
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Overview: The AL06R/AL20R combines the micron-level temperature control of a Laser Marking Machine, the graphic editing freedom of a Marking Machine, the local enhancement effect of a Dot Peen Marking Machine, and the large-area processing speed of a Pneumatic Marking Machine, all within a mere 3.8 kg copper reflective water-cooled housing. Whether you are mass-producing hardening gearbox gears or customizing gradient hardness for aerospace blades, simply call up the "hardening-marking" dual-process package on the touchscreen. The head-mirror switching is completed within 30 seconds, allowing the same laser beam to first harden and then mark – using a single hardening head, the heat treatment workshop and traceability station are merged into a highly flexible, zero-rebound "laser hardening + laser marking" composite production line.
