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"Hi-Fi svět" federmann.cz :: Zobrazit téma - Moderující bastlíř Živě.cz EKKAR vysvětluje funkci kalafuny
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Moderující bastlíř Živě.cz EKKAR vysvětluje funkci kalafuny
http://forum.federmann.cz/viewtopic.php?f=42&t=108
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Autor:  Federmann [ stř 28. říj 2009 14:47:18 ]
Předmět příspěvku:  Moderující bastlíř Živě.cz EKKAR vysvětluje funkci kalafuny

Moderující bastlíř Živě.cz EKKAR vysvětluje funkci kalafuny


Vodiče se přes očko většinou nezahýbají, ale zůstávají tak aby byl jejich konec zřetelně vidět. Pro pájení se používají různé tavidla a nejznámějším je kalafuna. Kalafuna je pryskyřice jehličnatých stromů a nemá sloužit k odplavení nečistot, ty má odstranit ten kdo chce pájet a má pájet v jistém stupni čistoty.
EKKAR_24.jpg

Kalafuna slouží hlavně k tomu, aby vytvořila ochrannou lázeň, která brání přístupu vzduchu a nadměrné oxidaci pájeného materiálu, ale také pájky. Na pájením přehřátém spoji, dojde k odpaření kalafuny, ta nám spoj nechrání a vznikne nekvalitní spoj, neboť zoxiduje pájený materiál i pájka. S oxidovaným materiálem se pájka nespojí a zoxidovaná pájka zkrystalizuje, čímž ztratí časovou stálost a od pájeného materiálu se dříve či později oddělí.

Kalafuna se nesmí nikdy přehřát a je prvotním měřítkem kvality pájení …

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