Heller Industries Inc. | https://hellerindustries.com/nonwetting/
. Process and design-related causes of PCB Nonwetting: Solder paste flux not aggressive enough for level of oxidation present on part or PCB PCB pad contaminated Component lead contaminated Excessive moisture absorbed by paste Paste exposed beyond
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resource-center/solder-glossary-of-terms
. Excessive preheat can reduce flux effectiveness. Printing A process for transferring solder to a surface by forcing solder paste through a stencil or screen with a squeegee
| http://etasmt.com/te_news_bulletin/2021-08-31/23574.chtml
& PCB Delamination From: Author: Publish time:2021-08-31 17:39 Clicks:16 Circuit Board Voids Circuit Board Voids are cavities or air pockets inside the solder joint formed by gases that are released during reflow or by flux residues that fail to escape from the solder before it solidifies
Blackfox Training Institute, LLC | https://www.blackfox.com/how-to-remove-oxidation-from-soldering-iron-tips/
. Excessive heat will create oxidation build up on the tip, shortening its life You don’t need to clean the black flux residue on the tip as it does not affect soldering performance at all Conclusion Applying the proper soldering tip care can help prevent oxidation, and prolong the
ASYMTEK Products | Nordson Electronics Solutions | https://www.nordson.com/en/divisions/efd/resources/solder-dictionary-of-terms
. Preheat The process of stabilizing the work to be soldered at a temperature below the solder melting point. Excessive preheat can reduce flux effectiveness. Printing A process for transferring solder to a surface by forcing solder paste through a stencil
| https://www.eptac.com/faqs/soldertips/soldertip/gold-removal-issues-with-hollow-cup-connectors
. Are there other methods we could explore? Answer: I understand your methodology is loosening the pins which results in softening up the plastic housing from excessive heat
Blackfox Training Institute, LLC | https://www.blackfox.com/soldering/how-to-remove-oxidation-from-soldering-iron-tips/
. Excessive heat will create oxidation build up on the tip, shortening its life You don’t need to clean the black flux residue on the tip as it does not affect soldering performance at all Conclusion Applying the proper soldering tip care can help prevent oxidation, and prolong the
| http://etasmt.com/cc?ID=te_news_bulletin,21161&url=_print
. Give enough time in this area to make the temperature of the larger component catch up with the smaller component, and to ensure that the flux in the solder paste is fully volatilized
| http://etasmt.com/te_news_bulletin/2020-09-12/19161.chtml
: check the oxygen analyzer pool to ensure that the water volume is between the maximum and minimum indicator lines to avoid excessive water volume 5
Imagineering, Inc. | https://www.pcbnet.com/blog/identifying-and-correcting-solder-bridge-defects/
. You may have to adjust the solder paste printing pressure, or the pressure for pick and place nozzles – excessive force can squeeze the paste out of the pads, forming solder bridging defects
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