Hebei Juliang Technology Co., Ltd. is one of the leading manufacturers and suppliers of precision laser welding machine in China. Please feel free to buy CE approved machinery made in China here from our factory. All customized machines are with high quality and competitive price.
Product Definition
A precision laser welding machine is a laser welding system designed for applications requiring high positional accuracy, consistent weld penetration, and minimal heat-affected zone. The machine generates a beam at 1080nm wavelength, delivered through an optical fiber cable to a welding head. The beam is focused to a spot size typically ranging from 0.05mm to 0.5mm, producing power density sufficient to melt metal at the joint interface while minimizing thermal spread to surrounding material. This level of precision makes the machine suitable for applications where weld quality directly affects component performance, including medical devices, electronic components, and aerospace parts.
Common Failure Modes
Protective Window Contamination: Spatter and metal vapor deposits on the protective window. Symptoms include reduced weld penetration and inconsistent bead appearance. Preventive: daily inspection; clean with lens-grade wipes; replace if pitted.
Focus Drift: Thermal expansion of optical components causes focus position changes. Symptoms include inconsistent penetration depth across a production shift. Preventive: autofocus compensation or periodic focus verification with burn test.
Shielding Gas Flow Instability: Pressure fluctuations affect weld quality. Symptoms include oxidation on the weld surface and porosity. Causes: regulator malfunction, line blockage, supply depletion. Preventive: mass flow controller feedback; daily pressure check.
Back-Reflection Damage: Reflected beam from reflective materials (aluminum, copper) can damage the laser source. Symptoms include sudden power drop and source failure. Preventive: optical isolator in the beam path; protective circuitry.
Positioning Error: Mechanical backlash or encoder drift causes weld placement errors. Symptoms include misalignment between weld and programmed path. Preventive: periodic calibration using a laser interferometer; backlash compensation.
Machine Structure
Chassis Construction
The machine body is constructed from welded steel plate with ribbed reinforcement for high rigidity. The chassis is machined in a single setup to maintain alignment between optical and mechanical axes. Vibration-damping mounts are used to isolate the machine from external vibration.
Laser Source
Fiber laser with ytterbium-doped gain medium. Power stability is maintained by internal feedback control and thermal management.
Beam Delivery System
The optical path includes a collimating lens and focusing lens. An autofocus system compensates for thermal drift during operation.
Positioning System
The machine uses precision ground ball screws or linear motors on all axes. Guide rails are precision-ground and preloaded.
Cooling System
Water-cooled system is required to maintain thermal stability of the laser source, optics, and welding head. Chiller capacity must match power output.
Gas Supply System
Gas lines are stainless steel to prevent contamination. Gas type selection depends on material.
Our Certificate
CE
CE
ISO
ISO
FAQ
Can the precision laser welding machine weld dissimilar materials?
Yes, it's possible to weld combinations like copper to aluminum, steel to stainless steel, and aluminum to steel. Because these metals have different melting points and thermal conductivities, you'll need to optimize the welding parameters. Controlling the pulse shape and power is key to successfully joining dissimilar metals.
What is the typical training time for a new operator?
Basic operation (program loading, part loading, monitoring) requires 2–3 days. Advanced programming and parameter optimization require 1–2 weeks. On-site training is provided during installation.
Can the machine weld without shielding gas?
Some materials (thin stainless steel, titanium under inert gas) can be welded autogenously without additional shielding. Most applications require shielding gas to prevent oxidation and protect weld quality. Gas selection depends on material and process requirements.
What spare parts should I keep in stock?
When it comes to spare parts, for a production shop, you should keep 5–10 protective windows, 2–3 nozzles, 1–2 lens cleaning kits, 1 water filter, and coolant for a single full change. For critical uses, maintain a spare protective window kit and filtering elements to sidestep extended downtime.
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