2025-10-24 11:11:45
Driven by intelligent driving and IoT technologies, millimeter-wave radar is rapidly iterating towards miniaturization and high density. The solder joint pitch for its internal core components, such as power supply boards and RF modules, has been reduced to below 0.3mm. Traditional welding techniques, hampered by issues like insufficient precision and a high risk of thermal damage, are struggling to meet the demands of this industry trend. Laser soldering, with its advantages of non-contact heating and high-precision control, has become the core technology for solving the precision welding challenges of millimeter-wave radar, and ULiLASER's innovative solutions are precisely aligned with these industry pain points.
The miniaturization of millimeter-wave radar presents a dual challenge for soldering processes: achieving micron-level solder joint positioning while simultaneously avoiding thermal damage to ceramic substrates and sensitive chips. Traditional soldering irons offer a positioning accuracy of only ±0.05mm and create a large heat-affected zone (HAZ), which can easily lead to component failure or signal attenuation. ULiLASER's laser soldering equipment, with its exceptional soldering precision of ±0.01mm, can accurately target 0.15mm x 0.15mm micro-pads, perfectly meeting the soldering requirements for high-density pins inside the radar.
The closed-loop soldering system and the linear temperature control system are ULiLASER's core technological highlights. Its closed-loop system uses an infrared temperature measurement module to monitor the solder joint temperature in real-time at a sampling frequency of 100 times per second. Combined with a linear temperature control algorithm, it dynamically adjusts the laser power to maintain the soldering temperature within the optimal range of 217-227°C. This precise temperature control capability fundamentally solves the problem of solder splashing caused by temperature fluctuations in traditional welding. After one company adopted this technology, its welding defect rate dropped from 4% to 0.2%, resulting in annual cost savings of over 3 million RMB.
Synergistic innovation in software and hardware further strengthens ULiLASER's competitiveness. The proprietary laser soldering software features a built-in library of over 500 process parameters, automatically matching the requirements for different materials such as lead-free solder paste and silver-based solder. Paired with a proprietary high-precision solder feeding module, it achieves a feeding volume control error of just ±1%. The software also supports integration with MES systems for real-time uploading of welding data and can be expanded through modular add-ons to perform complex functions like multi-layer stack soldering and selective soldering, adapting to the multi-scenario needs of radar production.
In applications such as sealing the outer housing of millimeter-wave radar, ULiLASER's equipment demonstrates strong adaptability. Its non-contact welding controls the heat-affected zone to within 0.1mm², preventing housing deformation. Combined with a 4K vision positioning system, it achieves precise welding even on minuscule components, ensuring the radar's hermetic seal and signal stability.
As the market penetration of millimeter-wave radar increases in sectors like automotive electronics and security, the demand for precision welding continues to escalate. With its core advantages of "High Precision + Intelligence + Strong Adaptability," ULiLASER provides the industry with a full-process solution, from process design to production implementation, establishing itself as a key force driving the miniaturization of millimeter-wave radar.
