Proper Soldering

DEFINITION OF TERMS FLUX- reduces surface tension so that the

molten solder will flow easily.SOLDERING- a method of joining two metal parts using

a third metal that has lower melting point.TINNING- act or technique of coating with soft solder.

TOOLS NEEDED Soldering Iron Diagonal CutterMATERIALS NEED Flux PCB ( Printed Circuit Board)Sand Paper Lead

SAFETY PRECAUTIONSUse the right tools for the right job

Always be aware of your hands when heating the soldering iron

STEPS IN SOLDERING

1. Prepare tools and materials needed in the activity.

2. Clean first the area to be solder using sand paper

3. Allow soldering iron to heat4. Touch the tip of the iron to the

terminal and allow heat to transfer5. Touch the solder to the terminal

Multiple Choice Direction: Choose the letter of the correct answer.1. A tool that is used for soldering and maintain uniform heat and can

be used whenever there is an electric circuit? a. Blow torch b. Electric soldering iron c. Heat gun d. Lighter2. It is method of joining two metal parts using third metal that has a

lower melting point? a. Bending b. Piping c. Soldering d. Cutting3. It is act or technique of coating with soft solder?

a. Tinning

b. Welding

c. Piping

d. Trimming

4. Reduces surface tension so that the molten solder will flow easily?

a. Flux b. Salt c. Vinegar d. Water5. It is a kind of flux that is more effective and

frequently used on electrical and electronic works?

a. Acid flux b. Baking soda c. Non corrosive flux d. Powder mix

Assignment:

Follow Up:1. What are the different shapes of

soldering iron?2. What are the types of flux used in

soldering?Advance:1. Give the parts of a fluorescent lamp?2. Draw the schematic diagram of a

fluorescent lamp?