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Zorluk: OrtaSoldering Equipment

When desoldering a through-hole component from a printed circuit board, how does desoldering braid (wick) remove the molten solder from the joint?

  1. A
    It creates a spring-loaded mechanical vacuum that suctions the molten solder into an internal storage cylinder.
  2. It draws the molten solder into its fine copper weave through capillary action when heated.Cevap
  3. C
    It chemically dissolves the solder alloy into an inert gas that evaporates away from the circuit board.
  4. D
    It deposits an insulating silicone barrier over the copper trace to electrically isolate the pin.

Cevap

It draws the molten solder into its fine copper weave through capillary action when heated.
Desoldering braid (wick) is composed of finely braided copper wire, often pre-coated with rosin flux. When positioned over a solder joint and heated with a soldering iron tip, the molten solder flows into the tightly spaced copper weave by capillary action, cleanly extracting the alloy from the pad and component lead.

Adım Adım Çözüm

1
Identify the function and material construction of desoldering braid (solder wick).
Recognize that desoldering braid is made of tightly woven, flux-coated copper strands.
Understanding the physical structure of the tool determines its operational mechanism.
2
Analyze the physical principle of solder extraction during thermal contact.
When placed between the hot iron tip and the solder joint, heat liquefies the solder, and surface tension pulls the molten metal into the spaces between the copper strands via capillary action.
Capillary action naturally draws liquid metal into narrow gaps of higher thermal affinity without requiring mechanical suction.

Anahtar Kavram

Desoldering braid (wick) relies on capillary action within woven copper strands to absorb and remove molten solder.
Tahmini Süre:45s
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