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2. Portal:Engineering/Selected article - Wikipedia

   en.wikipedia.org/wiki/Portal:Engineering/...

   Apollo 8, the second human ... metal-joining techniques such as brazing and soldering, ... that fed argon gas around tungsten tip to prevent the composition of the ...

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4. Ultrasonic soldering - Wikipedia

   en.wikipedia.org/wiki/Ultrasonic_soldering

   Ultrasonic soldering iron tips can heat (up to 450 °C) while mechanically oscillating at 20—60 kHz. This soldering tip can melt solder filler metals as acoustic vibrations are induced in the molten solder pool. The vibration and cavitation in the molten solder then permits solders to wet and adhere to many metal surfaces.

5. Soldering iron - Wikipedia

   en.wikipedia.org/wiki/Soldering_iron

   Spool of solder. 1.6mm. When the iron tip oxidises and burnt flux accumulates on it, solder no longer wets the tip, impeding heat transfer and making soldering difficult or impossible; tips must be periodically cleaned in use. Such problems happen with all kinds of solder, but are much more severe with the lead-free solders which have become ...

6. Soldering - Wikipedia

   en.wikipedia.org/wiki/Soldering

   The tip of the bit (commonly iron plated to reduce erosion) is kept wetted with solder ("tinned") when hot to assist soldering, and to minimize oxidation and corrosion of the tip itself. After inserting a through-hole mounted component, the excess lead is cut off, leaving a length of about the radius of the pad.

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