ALLOYED STEEL SEPARATION Team 1: Rodrigo Gomez-Mendoza Namjun Kim Kristen Myatt Clark Bardman.
-
Upload
quinten-new -
Category
Documents
-
view
221 -
download
2
Transcript of ALLOYED STEEL SEPARATION Team 1: Rodrigo Gomez-Mendoza Namjun Kim Kristen Myatt Clark Bardman.
ALLOYED STEEL SEPARATION
Team 1:
Rodrigo Gomez-Mendoza
Namjun Kim
Kristen Myatt
Clark Bardman
SPECIFIC SCRAP SEPARATION
Scrap metal separated as it enters scrap yard
Piles have specific, known composition of alloyed steel
Allows a more specific output of shredded scrap
Later, sold to companies with more certainty of the various metals with in the scrap.
DENSITY Density of lower alloyed steel: 7.6 g/cm3. Density of higher alloyed: around 7.85
g/cm3 depending on the type of the scrap Melted in a vat together
the higher density (higher alloyed) steel will be on the bottom
Higher alloyed steel that sits on bottom can be tapped out, leaving the low alloyed steel behind
Only steel with desired alloy content is left in vathttp://hypertextbook.com/facts/2004/KarenSutherland.shtml
MELTING POINT SEPARATION
Low alloyed steel melts at 1432 C High alloyed steel melts at 1415 C All scrap is placed in chamber at1415 degrees
Only high alloyed steel melts off
Conveyer belt will have small holes for melted high alloy steel to fall through
Low alloyed steel will not melt and will continue on for processing
http://www.engineeringtoolbox.com/melting-temperature-metals-d_860.html
SHAPE MEMORY ALLOY
Replace aluminum and steel that are used for making cars Shape Memory Alloy is lighter and cheaper.
High temperature causes them to arrange themselves into the most compact and regular pattern shape.
Nitinol has two common phases High temperature form austenite: Hard and solid Low temperature form martensite: flexible & with pressure, atoms
Due to the lack of manufacturing, only used in military, medical, safety, aerospace, and robotic fields.
Would make scrap life cycle more closed and efficient
FINAL CONCEPT
All scrap steel will be moved to the processing plant and placed on a conveyer belt in heated chamber
High alloyed steel melts away, and low alloy steel stays on belt
Remaining steel moves into heated vat Dense material (high alloyed steel) sinks
to the bottom and is tapped out Less dense metal (low alloyed steel) will
remain in the vat and can be tapped out later, ready for use
Scra
p
ente
r
s
Elements heat chamber to 1415 C
Scrap moves with belt
Hig
h al
loye
d st
eel
mel
ts a
nd fal
ls
thou
gh
Low a
lloye
d
steel f
alls in
to
vat
Higher densit
y,
higher allo
yed, s
teel
is re
moved
PROS
Effectively separates high and low alloyed steel
Saves higher alloyed material for later use
Does not require expensive machinery Not much physical labor involved
CONS
Requires a decent amount of energy
May be hard to setup correctly and implement
Cannot process too much material at one time