Metals & Processes Flashcards
What are Ferrous metals?
Metals which contain iron
What are Non-Ferrous metals?
Metals which contains no iron
What are advantages of metals?
Excellent conductors of heat & electricity
Malleable-(can be squeezed & hammered flat)
Ductile-(Can be drawn into thin wires)
Easy to recycle
What is an Alloys?
A mixture of two or more metals
What’s properties of Alloys?
Better corrosion resistance
Greater Strength
Improved conductivity
What’s advantages of alloys?
Some are low costs
Heat resistant
Malleable/Ductile
What’s disadvantages of alloys?
Can be heavy
Some metals corrode badly
Finite resource
Not chemically resistant
What’s sand casting features?
Orange peel surface quality
The presence of draft angles
Rounded corners to ease mould removal
What’s identifying features of die casting?
High quality surface finish
High degree of accuracy
Complex shapes/forms
What is drop forging?
A high pressure process to hammer and squeeze metal
What are the conditions of drop forging?
Produces very strong objects
Metals can be hot or cold
What’s identifying techniques of drop forging?
Simple forms
Thick sections and walls
Large radii and draft angles
What is Blanking?
Making shapes
What is piercing?
Making holes
When are objects blanked or pierced?
Early in the manufacturing process, usually before bending or press forming
