Soldering, Brazing and Welding Flashcards
Does soldering involve heat?
Yes
What is soldering commonly used for? (2)
Electrical connections and circuit boards
What is soldering?
Soldering is joining two or more metal components together using a metal filler material into the joint.
What are the three types of soldering?
Hard, soft and silver
In soft soldering, what materials do you use to join metals?
Lead alloys
What is the most common heat source in soldering?
Electric soldering Iron
What two materials require special solders if they are to be used in This process?
Cast Iron and aluminium
What non ferrous metals can soldering be used for? (3)
Tin, lead, copper
Which alloy can soldering be used for? (1)
Brass
What ferrous metals can soldering be used for? (1)
Steel
Gap fill - soft soldering
The process is best confined to _____ fabrication where joints not subjected to ____ and vibration and so do not need to be very ______
Light, heat, strong
What is the difference between hard soldering/brazing and soft soldering?
Hard soldering requires a higher temperature
What is silver soldering primarily used for? (2)
Silver fro jewellery making and silversmiths
True or false
Silver soldering can be used to join together gold.
True
What other materials can silver soldering be used for? (3)
Brass, copper, steel
Gap fill - what is silver soldering
Silver soldering is the process of permanently _______ two pieces of metal together using ____ to melt pieces of ______ solder, which ____ to fill a prepared joint.
joining, Heat, silver, melt
Why is silver soldering used by jewellers?
to protect the precious metal
Why is silver soldering used by machinists and technicians?
High tensile strength
Why is soft soldering unsuitable for mechanical load-bearing applications?
Because the joint would not be strong enough
How might the low temperature in soft soldering be a disadvantage?
The solder could melt under high temperatures
Which process requires the highest temperature?
Soft soldering, silver soldering or Brazing
Brazing
Why is Brazing commonly used with cast Iron?
It has a very high melting point
True or false
Silver soldering can be completed with a soldering Iron
False - only soft soldering can be done with a soldering Iron
What temperature is used as a demarcation between soldering and brazing?
450 degrees
What are the three types of bonding involving heat? (3)
Soldering, Brazing, welding
When would you use Brazing?
When the melting point of the solder is above 450 degrees
What is the main disadvantage of brazing in comparison to welding?
The joints from welding are much stronger
What is the key difference between welding and brazing?
Welding involves melting the base material
What are the 3 types of welding?
MIG, TIG, ARC
What is the most common type of welding?
ARC
True or false?
In welding, the two pieces have to be the same material
True
Finish the sentence
Filler materials can be used in welding as long as…
They are the same material as the pieces being joined
Gap fill - ARC welding
Arc welding is the process of _______ two metal workpieces together using a ____ covered electrode which is melted in an electric ___ and becomes a fused part of the pieces being welded.
Joining, flux, ARC
What does TIG stand for?
Tungsten-inner-gas welding
What does MIG stand for?
Metal-inert gas welding
True or false
MIG welding is more precise than ARC welding
True
Gap fill - TIG welding
The TIG process uses the heat generated by an ________ arc between the metals to be joined and an infusible ________ electrode, located in the welding torch. The arc area is shrouded in an _____ or reducing gas shield to protect the weld pool and the tungsten electrode.
Electric, tungsten, inert,
What is MIG welding good for?
Good for joining thin pieces of metal
What is TIG welding good for?
High weld quality
True or false
TIG welding is cheap
False, it has a high weld cost
Is TIG welding time consuming?
Yes, it Is a difficult and time-consuming welding process.
Why is TIG welding not very applicable in a school environment?
it requires a highly skilled operator
What are three applications of TIG welding?
aerospace welding, vehicle/motorcycle and bike manufacturing
What is Brazing?
Brazing is where 2 pieces of metal are joined together by melting a DIFFERENT type of metal to form a joint
