How is this part made?

2.810

Professor Tim Gutowski

Flashlight Lab assignments: Sept 9, 20199

Process IdentificationWhat is the product?◼ Loads, environment, annual part volume

What is the material?◼ Color, hardness, magnetic, surface

Surface finish◼ Roughness, tool marks, gate location, trim line

Shape◼ Curvatures, undercuts, internal passages, draft

angles, threaded sections, warping, sink marks

Size◼ Thickness, aspect ratio, implied size of machine

Kalpakjian and Schmid

1 2

3

6

4 5

7 8

9 10

11 12

14

13

15 16

17 18

19 20

21 22

23

2526

24

29

2827

30

Melting temperatures

0

1000

2000

3000

Zinc, Zn

PTFE(Teflon)

Tin, Sn; Nylon

Al, Al alloys

Copper,Cu; Bronze; Brass

Iron,Fe; Carbon Steels; Stainless steelNickel,Ni; Silicon,Si

Nickel Alloys

Titanium,TiPlatinum,Pt Alumina, Al2O3

Molybdenum, Mo

Silicon Carbide, SiCTungsten Carbide, WC

Cubic; Zirconia, ZrO2

Tungsten, W

Melt temperature for crystalline metals and ceramics and semi crystalline thermoplastic polymers

[C]

Hardness H~3Y

0

1000

2000

3000

7000

8000

Zirconia, ZrO2

Quartz,SiO2 Maraging Steel

Tungsten,W

Aluminum AlloyPolymers

Tungsten carbide,WC

Titanium carbide,TiC

Boron carbide, B4C

Alumina,Al2O3

Diamond,C

[Kg/mm2]

Hardness values for some ceramics, metals, and polymers. (ref. Rabinowicz)