|
PROCESS
DEFINED
:
|
| Casting made by forcing molten metal under external
pressure in to a metal die or mold. |
|
MATERIALS
: |
| lead, tin, zinc, magnesium, aluminum and copper
alloys. |
|
RATE
OF PRODUCTION
: |
| very
high upto 500 shots/hr possible with some
parts. |
|
SIZE
& WEIGHT OF PARTS
: |
| no
real size limitation, size depends upon
casting equipment available. present max.
sizes run : 15lb for aluminum, 10lb for magnesium and 30lb for zinc. |
|
STRENGTH
OF PARTS
: |
|
high
unit strength. |
|
WALL
THICKNESS
: |
|
very
thin; upto 1in or more max. |
|
COMPLEX
ITY
: |
|
from
simple to very complex. |
|
OTHER
CHARACTERISTICS
: |
|
insert
of almost any metal can be embedded in
castings. |
|
|
|
|
| PERMANENT
MOULD CASTING |
|
|
|
PROCESS
DEFINED
:
|
| Casting
produced by pouring molten metal under a
gravity head into metallic molds. |
|
MATERIALS
: |
|
iron, magnesium, aluminum & copper alloys. |
|
RATE
OF PRODUCTION
: |
| relatively
low. not a high production process. |
|
SIZE
& WEIGHT OF PARTS
: |
| usually
medium or large parts. between die castings
& sand castings. |
|
STRENGTH
: |
| high |
|
WALL
THICKNESS
: |
| not
so thin as die casting but much heavier
sections possible. |
|
COMPLEX
ITY
: |
| usually
not s complex as die castings. |
|
OTHER
CHARACTERISTICS
: |
| inserts
can be used. |
|
|
