If you have ever had to solder a circuit board manually, then you can understand the genius and power of wave solder machines. No other device can save as much time and effort while mass-producing the brain of nearly every modern electronic device. But as helpful as these machines can be, they can also be a headache when not working properly. That is why it is so important to recognize problems and purchase top-quality used PCB equipment in the first place.
At Capital Equipment Exchange, we are committed to offering the equipment you need at gently used prices.
There are at least two forms of incomplete hole fills that can be a problem. The first is the presence of open cavities or holes inside the solder. In that case, it is possible that there was water or other particles in the flux or inside the hole. In the second problem, the flux may not properly move through the hole for a sufficient solder. This could be a problem with the preheating temperature or not enough solder being applied.
This problem refers to components that have been lifted away from the circuit board during the process of wave soldering. It can be caused by component leads that are too long. In other cases, the circuit board itself is either too flexible in general or made of a material that bends during the preheating process. It may be necessary to select components and boards that have similar thermal limits.
The opposite problem of the incomplete hole fill is having too much solder in place. While this may not necessarily impact the function, it can make the board connections difficult to determine. This problem can be caused by the board moving too quickly through the machine. Excessively long leads can also provide opportunities for the flux to pool.
A number of problems can be caused by solder application defects. For example, if the solder is too hot or contains trapped gasses the material can form balls attached to the board. If too much solder is applied, or it does not drain properly, it can form flags on the leads.
Bridging is similar to some of the above problems, including balling and excess solder. In the case of bridging, however, the extra pools of solder connect two or more leads. This can be potentially dangerous as it can cause short circuits.
Why spend top dollar when you can get the best quality used wave solder equipment from Capital Equipment Exchange? We guarantee our machines work with live demonstrations and technicians on standby. When it is time to replace your old wave solder machine, trust Capital Equipment Exchange for great SMT machines for less.