Explore our foundational equipment portfolio designed for micro-soldering, continuous sheet joining, mold surface rebuilds, and automated gold alloy assembly lines.
Precious metal micro-joining (including pure Au, 18K/24K gold, platinum, and gold-plated copper leads) presents unique challenges: extreme reflectivity at infrared spectra (>95% at 1064 nm), thermal diffusivity up to 318 W/(m·K), and molten pool volatility. As a primary manufacturer based in Shenzhen, Shenzhen Youmir Laser Technology Co., Ltd. addresses these challenges through custom diode/fiber beam shaping, dynamic energy profiles, and closed-loop pyrometric monitoring.
Traditional single-wavelength infrared sources experience severe back-reflection when impinging cold gold, causing laser diode damage. Our customized machines deploy blue-diode (450 nm) absorption pre-coupling combined with quasi-continuous wave (QCW) fiber lasers (1070 nm) to boost energy absorption from 5% to over 65%, completely eliminating spatter.
Gold's excessive thermal conductivity often causes thermal burn-through or cold solders under steady beam power. Our high-frequency coaxial infrared sensor measures molten pool temperature at 10,000 samples per second, feeding real-time digital signals into the laser power regulator to maintain thermal stability within ±2°C.
Integrating inert nitrogen (N2) shielding chambers and micron-level mechanical wire feeding (from Ø0.10 mm to 0.40 mm Au-Sn or SAC305 wires), Youmir custom platforms prevent oxidation discolouration, achieving mirror-finish fillets that need zero post-weld acid pickling.
Across high-density electronics manufacturing hubs, luxury atelier zones, and medical sensor production centers worldwide, our custom gold laser machines meet specific thermal and physical constraints.
In RF microelectronics packaging, GaAs/GaN microwave circuits demand Au80Sn20 eutectic soldering of thin gold-plated lead frames. The localized pulse of our laser system minimizes intermetallic compound (IMC) thickness below 1.5 μm, preventing signal attenuation and micro-crack delamination under extreme thermal cycling.
From Valenza (Italy) to Bangkok (Thailand) and Shenzhen's Shuibei jewelry cluster, workshops utilize our compact 60W bench-top jewelry welders to perform prong re-tipping directly next to heat-sensitive stones (emeralds, opals, pearls). The beam profile retains a spot size under 0.1 mm, preventing heat soak into precious gemstones.
Cardiovascular pacemakers and continuous glucose monitoring probes utilize fine pure-gold leads welded to bio-compatible titanium pins. Our continuous and pulsed laser systems operate inside sterile inert gloveboxes, achieving clean-room grade joins without chemical fluxes or organic solvent residues.
Quantitative performance indices between traditional hot-bar / iron soldering, standard infrared micro-welders, and Youmir Custom AI-Assisted Closed-Loop Gold Laser Soldering Systems.
| Evaluation Parameter | Traditional Hot-Bar Soldering | Standard YAG / Fiber (Fixed Pulse) | Youmir Custom AI Closed-Loop Gold System |
|---|---|---|---|
| Laser Spot Diameter | Mechanical contact (>0.8 mm) | 0.20 mm - 0.40 mm | 0.05 mm - 0.15 mm (Collimated Dynamic) |
| Heat-Affected Zone (HAZ) | Extensive (>1.50 mm) | Moderate (0.35 mm - 0.50 mm) | Minimal (< 0.08 mm) |
| Gold Reflectivity Energy Loss | N/A (Direct Contact) | 85% - 92% reflected | < 15% (Blue/IR Hybrid Coupling) |
| Intermetallic Compound (IMC) | Coarse, thick (>4.0 μm) | Non-uniform (2.0 - 3.5 μm) | Fine, homogeneous (≤ 1.2 μm) |
| Thermal Feedback Rate | Open Loop (Slow thermocouple) | None / Static timer pulse | 10 kHz Coaxial IR Closed-Loop |
| Joint Shear Strength (Au-Sn) | Baseline (35 - 45 MPa) | 50 - 65 MPa | 85 - 110 MPa (Pore-Free Density) |
Located in Matan, Guangming District, Shenzhen, Youmir operates at the heart of the world's most dense electro-optical and precision CNC hardware supply network. This geographical positioning gives overseas clients unmatched capital and turnaround advantages:
Our dedicated research laboratories in Shenzhen and Hunan continue pushing boundaries in precision photonics and autonomous machine vision:
Deploying industrial machinery across global borders requires stringent safety, electrical conformity, and localized engineering field readiness.
Every Youmir custom gold laser system holds CE compliance (Machinery Directive 2006/42/EC and Low Voltage Directive 2014/35/EU). Systems strictly conform to IEC 60825-1 laser radiation safety standards, equipped with dual-channel interlocks, emergency stop loops, and optical protective viewing windows (OD6+ rated).
Factory export machines are built with multi-tap power systems supporting worldwide electrical supplies: 110V/220V single-phase (50/60Hz) for Americas and Asia-Pacific or 380V/480V 3-phase industrial grids for European automated plants. Integrated isolation transformers suppress grid surges and electrical interference.
Supported by 24/7 bilingual remote diagnostic teams, on-site installation training by factory engineers, and designated regional agency depots in key trade zones. Overseas buyers access free metallurgical sample tests prior to purchase, complete with cross-section shear test reports and parameter tables.
Explore precision repair, pulse cleaning, high-power tool maintenance, and compact jewelry welding workstations manufactured in our production facilities.
Expert answers addressing metallurgic challenges, power choices, optical safety, and international OEM ordering.
Gold exhibits low initial absorptivity (<5%) to the 1064 nm - 1080 nm infrared spectrum, reflecting almost all energy. If laser power is increased blindly to overcome this threshold, the sudden molten state causes runaway thermal absorption, resulting in explosive blowout. Youmir systems use modulated high-peak QCW pulse shaping and optional blue laser assist to maintain a stable, non-explosive melt pool.
Our micro-feeders operate with Au80Sn20, SAC305, Sn63Pb37, and In-Sn solder wire formats ranging from 0.10 mm to 0.40 mm diameter. The synchronized wire feed controller permits stepped pulses accurate to 0.05 mm feeding increments, fully coordinated with beam firing.
Yes. As a full-service manufacturing factory, Youmir supplies customized pneumatic clamps, rotary chucks, vacuum nests, and multi-axis CNC tables (XYZ+R) engineered specifically around your part drawings to ensure tight beam focus tolerance.
Standard benchtop jewelry and QCW units ship within 7 to 10 days. Customized automation systems require 20 to 30 working days. We invite prospective buyers to send specimen components to our Shenzhen laboratory for free metallurgical verification, returning cross-sectional reports and process videos prior to order confirmation.
Whether you are expanding high-volume electronic connector capacity, designing precision aerospace electronics, or establishing an atelier bench, our factory direct engineering staff will configure the ideal optical wavelength, beam delivery, and thermal sensing package.
