Through the soldering process and the use of an alloy under heat, one can connect one or more metal parts. The fusion temperature or melting point of the alloy needs to be lower than the melting point of the metal parts one tries to solder. When the correct temperature is reached, the alloy will flow between the two metal parts. All things going well, it will come to a solid, corrosion-resistant, conductor connection between the alloy and the metal parts, which will act as a conductor and allow electricity and heat to freely flow between all parts.
Source: 1997-2014 Elektronik-Kompendium.de
In this case, prior to assembly and according to an exact and pre-determined template or jig, the alloy will be applied in an exact thickness. The use of a reflow-oven in a nitrogen atmosphere allows for the alloy to form a secure and clean connection.
The process, called wave-soldering allows us to solder PCBs in a fully automated process using protective gas. By using a spray flux, we are able to apply flux in small dosages, virtually a no-clean-process. Through pre-heating of the PCBs, the flux will be sufficiently activated, thus a satisfactory result may be achieved during the wave-soldering process.
During this process, miniature waves are used within a protective gas atmosphere, which are computer-controlled to allow that only a small portion or selected pins of the PCB are being soldered. It is also possible to solder already SMD-assembled with THT-assembled PCBs. Furthermore, it is also possible to use this select-soldering technology for two-sided components.
Protective Gas-Atmosphere (Nitrogen)
When using wave-soldering technology in connection with a protective-gas-atmosphere, the adverse effect of exposure to oxygen is being avoided. The exclusion of oxygen prohibits rapid oxidation of the alloy and assures us of a better soldering connection (prevents repairs and reworks) – the entire process will be safer.
- Better soldering connections, reduced reworks
- Reduced use of alloy due to reduced oxidation
- Reduced soldering flux
- Improved cleanliness of PCB
- Environmentally friendly soldering
Soldering by Hand (Manually)
Here at Alpha-Laytron we continue to teach the art of manual soldering, and as we see on a nearly daily basis for prototypes, assembly of special components and for repairs and reworks, the use of manual soldering is still essential. However, it undeniably requires knowledge, extensive experience and skill. The importance of manual soldering is underscored by the fact that soldering connections, having to be especially dependable and having to meet higher than normal quality standards, such as is the case in the aerospace industry for instance, are often requested and required to be soldered manually.
Our employees are specifically trained in accordance of IPC-A-610. Therein are described the exact acceptance criteria for electronic component assembly.