Permanent Joining Methods (Metals) Flashcards
1
Q
Soft soldering conditions
A
Must be perfectly clean
2
Q
What is soft soldering used for?
A
Copper pipework
Electrical circuits
Plumbing
3
Q
Soft soldering solder
A
Contains a flux which keeps joints clean
4
Q
What is hard soldering used for?
A
Precious metals joining
5
Q
Hard soldering solder
A
An alloy of silver, copper and zinc
6
Q
Electric arc welding
A
Metals become part of the circuit
Uses electricity
Electrode and base material
7
Q
Oxyacetylene gas welding
A
Permanently joins mild steel
Oxygen and acetylene create an intense focused flame of 3500°C
Melts metal into a molten pool
8
Q
Brazing flux
A
Made from borax
Cleans
Prevents steel from oxidising
9
Q
Brazing rod
A
Made of brass
Flows on parts with flux
Joins steel parts
