Date post: | 07-May-2015 |
Category: |
Business |
Upload: | dostalikrg |
View: | 43,329 times |
Download: | 3 times |
Mrs. DostalikScience
10/29/2008
1. Scientists and Engineers2. Materials in Everyday Life3. Materials Companies in Beaver County
1. Metalwerks2. NF&M3. Rome Metals4. Allegheny Ludlum / Technologies5. Nova Chemical / BASF6. Zinc Corp
Vacuum Induction Melter
Load Metal and Molds1.Must know density!2.Different melt temperatures
INDUCTION SKULL MELTER1.Mainly Titanium and Zirconium2.Uses water cooled copper for a melting container
proprietary CHARGE CALCULATION PROCEDURE confidential
Alloy Name= 1058
procedure Heat number=
PC-627 Charge weight= 505.00 density 0.297
SET UP = 6 x 65, NO HT
Element C Cr Ni Fe Ti Mn Si Co Nb Mo Al P Be S
Min 19.00 15.00 1.50 39.00 6.75
Max 0.15 21.00 16.00 bal 2.00 1.00 41.00 7.50 0.015 0.001 0.015
Aim % 0.04 20.10 15.50 15.28 1.98 0.10 40.00 7.00 100.00
weight 0.20 101.51 78.28 77.16 0.00 10.00 0.51 202.00 0.00 35.35 0.00 0.00
TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE TRUE
weight
Scrap 1 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 2 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 3 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 4 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 5 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 6 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 7 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 8 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 9 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 10 % 0.00%
0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000
Scrap 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Balance virgin 504.50 0.202 101.505 78.275 77.164 ###### 9.999 202.000 0.000 35.350 0.000 0.000
0.040% 20.100% ###### ####### ###### 1.980% ##### 40.000% 0.000% 7.000% 0.000% 0.000% 0.000%
Total= 504.50
1. Metals – Alloys – Organic Materials – Gassesa. Pass around metalsb. questions
2. Melting Metals – Production of Polymers3. Welding vs Glue4. Why Vacuum?5. Demonstration - Reactive Metals / Reactivity6. Lab: Density – theoretical vs actual7. Demonstration: LN2, sensitivity of materials to
temperature8. Demonstration – Shape Memory9. Applications – Materials in Life / biomechanical
engineering
Observe the materials as they come around.◦ Weight vs size: what is this called?◦ Locate the element on the periodic table. Note the
atomic weight, theoretical density◦ Melting points◦ Properties of Metals – crystals!◦ Polymers – Chains!◦ Properties of liquids / gasses – absolute chaos!
Structure Reactivity Density
http://www.gordonengland.co.uk/conversion/density.htm
http://www.handymath.com/cgi-bin/density.cgi
Examples of Melt Points Physical States at Room Temp.
Melting Points W = 6,192F Al = 1,220F Re = 5,767F Sn = 449F Hg = -39F
Locate the melting points of some of the metals on the periodic table◦ Tungsten, rhenium, tin, lead◦ Applications?◦ Density while melting◦ Metal gasses, sputtering◦ Polymeric reactions
Popular polymers? Strings of polymers Carbon fiber
Welding is a specialized process where two sections of metal melted together◦ Heat◦ Explosion◦ Diffusion◦ Friction
Glue◦ Reactive polymers◦ Strong bonds◦ Boeing 787, stealth fighter
Absence of reactive gasses Reduced contamination of metal
◦ “regular” vacuum◦ Medium Vacuum◦ Deep vacuum
Melting by Induction – Electromagnetic Field Melting by Arc – Electrical / Plasma cloud Melting by Electron Beam – Focused Beam
of Electrons
Reaction Uses
Titanium, not solid but in small particles
Surface area Oxygen in atmosphere Ti + 2O = TiO2
Exothermic
Ti Oxide◦ Coloring – white◦ Toothpaste◦ Deodorant◦ Paint
Jewelry Anodized aluminum
Ductile to brittle transition Demo – Liquid nitrogen Video – forging
Nickel and Titanium alloy
“stretches” like a polymer
Can be deformed and snap back to a shape because of the crystal structure
Skeletal repairs Blood vessel strengthening Artificial limbs Mobility enhancements