The electronics industry is currently undergoing a significant transformation, driven by the influence of AI, smart manufacturing, and other emerging technologies. This transformation is characterized by a push towards higher quality development, leveraging advantages and technological innovations to meet the growing demand for intelligent devices and sensors across various sectors. Companies are increasingly focusing on product applications, energy conservation, emissions reduction, and production efficiency. This pursuit has lead to the diversification of product functions and a heightened demand for soldering quality.
Introduction to Laser Tin Soldering
Laser tin soldering, a soft soldering process, utilizes laser as the heat source for heating and melting tin to achieve the desired connection through penetration and spreading. Compared to traditional soldering methods, the non-contact laser heat source offers higher energy density, faster heating, and less thermal impact on surrounding components, making it advantageous in the microelectronics soldering field.
Laser Tin Ring Soldering Process: A Customized Solution
The laser tin ring soldering process employs customized tin rings as solder material, significantly reducing the flux content to about one-tenth of that found in solder paste. This process ensures excellent wetting conditions at the weld point, effectively improving post-weld flux residue issues and enhancing soldering quality. It is particularly suitable for products with strict requirements on post-weld residues. Additionally, the alloy composition and dimensions of the solder material can be customized to meet diverse production needs.
Process Principles
Laser tin ring soldering uses customized tin rings as solder, where the laser heat source melts the pre-placed tin rings at the soldering points without splatter or residue, eliminating the need for post-weld cleaning. This method ensures consistent solder volume, aesthetic weld spots, and strong specificity. It effectively mitigates issues like bridging and burning, ensuring high soldering yields. Compared to conventional laser solder paste techniques, laser tin ring soldering offers more stable and controllable melting processes, better solder volume control, and superior soldering quality. It is simpler to adjust than traditional laser wire soldering, has a lower learning curve, and its applicability extends to components, electronic assemblies, and SMT soldering fields.
Equipment Overview
Tin ring laser welding machine is widely applicable in automotive electronics, consumer electronics, home appliances, military electronics, medical electronics, and other microelectronics soldering fields. The equipment’s core includes a motion platform, pre-set tin ring components, a positioning camera, a laser, an industrial computer, and an external optical path system. Customized tin rings are selected based on disk size characteristics, combined with proprietary pre-set tin ring components for the pre-soldering process, followed by laser heating to complete the connection.
The equipment utilizes a dual-station design, allowing simultaneous pre-soldering and soldering processes to maximize efficiency. Tin ring size, composition, and flux content are customizable to meet various application requirements.
Process Advantages
1.Diode Lasers
Han’s Laser tin ring laser soldering machine uses diode lasers as the soldering heat source, offering high electro-optical conversion efficiency, long lifespan, uniform energy distribution, and stable energy output.
2.Tin Ring Soldering
This method ensures constant solder volume per point, good process stability, and eliminates defects such as splattering, bridging, and drawing.
3.Customizable Tin Rings
Alloy compositions such as Sn-Ag-Cu, Sn-Bi-Ag, Sn-Pb, and others are selectable to meet different industrial process requirements. Flux content ranges from 1% to 1.5%, leaving no residue and eliminating the need for post-weld cleaning.
4.Non-Contact Laser soldering
The process synchronizes solder feeding and soldering, facilitating automation and significantly enhancing production efficiency.
Laser Tin Ring Soldering Sample
5.Energy/Temperature Adjustment
The soldering process allows for real-time temperature monitoring at the weld points, providing feedback on the process curve and effectively mitigating burn defects.
Tin ring laser soldering represents a significant advancement in soldering technology, offering tailored solutions that enhance soldering quality, efficiency, and adaptability across the electronics manufacturing industry. This process, by addressing specific soldering challenges and requirements, paves the way for future innovations in electronic assembly and production processes.