basic forming process for materials Flashcards
casting
heating up material
place into mould
die casting: use permanent mould and extensively used for non-alloy casting
rolling
metal passed through rollers (change in thickness and cross section)
- rolling can be done at high temps (hot rolling), or cold temp (cold rolling)
- extensively used technique for forming metals
extruding
material passed through die at elevated temperature
- like squeezing toothpaste from a tube
cutting
removal of unwanted materials
mechanical cutting
- shearing, sawing, abrasion, grinding, drilling
thermal process
- plasma cutting, laser cutting
fabricating
assembling an item from various components using range of cutting, machining, forming and joining processes
JOINING — METALLURGICAL — welding
(fusion)
joining materials through process of mixing, melting and solidification
JOINING — METALLURGICAL — soft soldering
melting a lower melting point material between work pieces to form bond between them WITHOUT melting the work pieces
JOINING — METALLURGICAL — brazing and silver soldering
soldering but higher temperature used to melt the filler metal
JOINING — mechanical joining
fastening or joining materials mechanically
- screws
- bolts
- pins
- clips
- nails