Non-Ferrous & EV Manufacturing

High-Reflectivity Copper & Aluminum Laser Welding and Cutting (EV Battery & Busbar)

Pure copper (C11000) reflects over 95% of standard 1064nm infrared laser wavelength at room temperature, posing severe risks of optical module burnout from back-reflection. ACTCNC integrates multi-stage anti-reflection isolators and oscillating wobble beam optics, achieving zero-spatter, defect-free welding for EV battery modules, power distribution busbars, and copper heat sinks.

1. Optical Absorption Dynamics: Cold State vs. Molten Keyhole

Once copper transitions to the molten state, laser absorption spikes from 5% to over 65%. High-frequency dynamic wobble heads agitate the melt pool, preventing premature keyhole collapse and eliminating gas entrapment blowholes.

Material Grade	Initial Reflectivity (1064nm)	ACTCNC Wobble Laser Welding Speed	Weld Joint Electrical Conductivity
Pure Oxygen-Free Copper (C10200)	96.5% (Extremely High)	1.8 – 2.5 m/min (Zero Spatter)	>98% IACS (International Annealed Copper)
High-Conductivity Brass (C26000)	88.0%	2.5 – 3.8 m/min	>95% IACS
Aluminum 6061-T6 (EV Enclosure)	92.0%	3.5 – 5.0 m/min	Crack-free (Al-Si Wire Feed)

2. Anti-Reflection Hardware & Fiber Source Protection

Dual-stage optical isolators monitor backward light leakage in real-time (<0.2ms response time), shutting down excitation if dangerous back-reflection exceeds threshold values, safeguarding laser diodes for over 100,000 operational hours.