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nida hasnida

on 18 January 2013

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SOLDERING OBJECTIVES CLO1, PLO1, LD1, C3 SOLDERING TECHNIQUE SOLDERING TECHNIQUE Soldering is a process in which two or more metal items are joined together.
by melting and flowing a filler metal into the joint.
differs from welding in that the work pieces are not melted. apply solder into the joint, not to the iron directly.
joint melts the solder, and both metal surfaces of the joint. once solder flows into the joint, lift the soldering iron tip straight up.
finished soldered joint appears cone-shaped.
cut off any excess solder. SOLDERING TOOLS Soldering iron It supplies heat to melt the solder so that it can flow into the joint between two workpieces. An approximately pistol-shaped tool for soldering metals using tin-based solder to achieve a strong mechanical bond with good electrical contact. Soldering gun
DESOLDERING TOOLS DESOLDERING The removal of the solder already used, to release the parts from the circuit board for troubleshooting, repair, replacement and salvage. solder sucker solder wick Remove component lead. Repeat de-soldering as needed until all solder is removed. Remove soldering iron & solder sucker from area. Apply heat to the connection to be de-soldered. When the solder melts, trigger the solder sucker. DESOLDERING PROCESS : Solder Sucker 1 2 3 3 2 1 De-soldered PCB pad. Apply the solder wick and soldering iron to the de-soldered connection. The solder wick will draw the excess solder off of the PCB pad. Solder wick is finely braided copper that is used to wick away excess solder from a de-soldered connection. DESOLDERING PROCESS: Solder Wick GOOD AND BAD SOLDERING cold solder dry joint STANDARD OPERATING PROCEDURE
(SOP) Discuss in your group the standard operating procedure (SOP) of soldering station practice. At the end of this topic, students will able to:
Know soldering technique and soldering tools
Identify type and the function of soldering tools.
Identify type and the function of desoldering tools.
Practice hand soldering technique
Standard operating procedure (SOP) of soldering station practice. To be continued
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