Solder

Question 1

What is solder made out of?

Answer 1

Tin and Lead

Question 2

What is the ratia between solder used in our class?

Answer 2

60% tin, 40% lead (60/40 solder

Question 3

Why is flux used for soldering ?

Give three reasons

Answer 3

• Allows solder to flow
  -cleans connections
  -prevents metal corrosion during heating

Question 4

What is tinning?

Answer 4

Tinning is the process of applying a thin layer of solder to another metal surface

Question 5

When is tinning needed in class?

Answer 5

Soldering Iron Tips

Foil Patterns

Question 6

The Soldering Process

Answer 6

• All surfaces must be clean

-Heat all surfaces simultaneously to a temperature that will melt solder

-Enough solder should be added so that the entire connection has an even amount

-Solder is always added to the opposite side of the connection that the heat is in

-the solder wire is removed first and then the soldering iron a few seconds later

Question 7

What does a proper solder connections look like?

Answer 7

SMOOTH

SHINY

COVERS THE CONNECTION

Question 8

what causes cold solder joints

Answer 8

1 removing heat too soon

2.the connectiin is moved before the solder is cooled / hardened