Why is Solder Flux Used in Soldering?The main function or use of flux in any Printed Circuit Board Assembly or rework is to clean and remove any oxide and impurities from the board. These oxides deposited on the board may not permit good solder joints. If the solder joint is poor, there...
A cold joint occurs when solder fails to melt completely which leads to a rough or lumpy surface. A good number of PCB manufacturers experience this problem; hence, it is a major concern for them. Cold joints can cause further issues in a circuit board as they are unreliable. Excess ...
Soft metals, like aluminum or copper, are the best choices for cold welding. In a Butt joint, removing the barrier layer of the metal is not often required as the plastic deformation that happens during the joining process breaks up the barrier automatically. How can I weld at home without ...
The process of “wave soldering” gets its name from using a large pool of molten tin during the soldering process. This pool of tin is heated to a temperature where the solid tin bar can melt and form a solution. This molten solution can be thought of as a “lake”. When the lake ...
III. Soldering: Solderingis a process similar to brazing but operates at lower temperatures, typically below 450°C (840°F). It involves melting a filler metal, known as solder, and using it to join two or more metal components together. People commonly use soldering for electronics assembly...
Boundary between a weld face and the parent metal or between runs. This is a very important feature of a weld since toes are points of high stress concentration and often they are initiation points for different types of cracks (eg fatigue cracks, cold cracks). In order to reduce the stres...
A Solder void is generated due to the insufficient availability of solder while creating the joint. Typically, a solder void contains air, but it may also consist of flux residue or cured resin when resin-containing solder paste is used during soldering. ...
Using a combination of both methods is also commonly done to leverage their respective strengths for optimal quality and throughput. With the electronics manufacturing industry moving towards greater automation, miniaturization and flexibility, innovations in soldering technologies will continue playing a key...
If you melt solder underneath conformal coating it will expand in volume and normally burst out of the coating and form small solder balls. This does, of course, starve the solder joint and create more rework. The solution is to ensure that no coated solder joints are subjected to temperature...
Nonetheless it still works fine for tape-over-joint LPR motor retention, body tube joint sealing, etc. and is often seen on the range at NARAMs. Unlike Kapton, you can get it in shiny metallic colors. Another caveat is that like all polyester, edge nicks will propagate easily and rapidly...