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Why is my solder turning white?
Silver solder is a pain in the ass-instant. Oxygen screws it all up, and it turns white. That’s why the nitrogen gas is used.
What is the white stuff on my circuit board?
The white residues themselves usually (but not always) are salts, which are the “activators” in the fluxes. When these salts meet heat or other chemicals, white residues can result. These residues can corrode delicate circuits. If cleaning is not performed properly, white residues can result.
What is white solder?
The White Solder Group (www.whitesolder.com.br) is the only one in the Brazilian’s market to act in the entire Tin supply chain, from cassiterite mining to the final product (solder bars, solder wire, solder paste) delivered to the customers using its own transportation company.
What is solder residue?
The flux residue is a flux leftover that is left on PCB after soldering. Apart from the board aesthetics one of the main reason why you should clean flux from your board is that it causes low voltage insulation short that can prevail (if not cleaned) between the pins of an IC where it was applied.
Why is my solder not shiny?
Dull (non-shiny) solder joints are usually the effect of coarse grain structure in the solid solder joint (though there can be other causes). The more slowly a joint cools, the coarser the grain growth and, conversely, the faster the joint cools, the finer the grain growth and the shinier the joint.
Can you overwork solder?
You might simply be soldering too slowly causing the solder to melt too quickly in one place. It might be your solder type. 60/40 flows more easily than 50/50 and can cause soldering problems if you go too slowly. You could try soldering the backside first with 50/50 then turning over and doing the front with 60/40.
Is flux residue bad?
Fluxes are reactive chemicals, and if left on the board they can cause corrosion and lead to circuit failures in the field. There are “no clean” fluxes that are meant to minimize this issue, but even these might not be appropriate for high-value circuits with high reliability requirements.
How do you keep solder shiny?
Here’s How You Get Shiny Copper Patina
- After soldering, clean your piece with patina and flux remover.
- When the piece is dry, mix a solution of 3 parts distilled water and 1 part ammonia.
- Dry the piece with a paper towel.
- Dip a paper towel into the patina and rub it all over the piece to cover the solder lines.
Why does my solder look dirty?
Your cutting could be the culprit with this soldering problem. Inaccurate cutting leaves wider gaps for the solder to flow through to the back side. 2. Your iron might be too hot, causing the solder to melt too quickly.