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Size Effect-Enabled Methods

  • Heinz-Rolf Stock
Chapter
Part of the Lecture Notes in Production Engineering book series (LNPE)

Abstract

Micro metal forming requires rather thin parts as the wrought material. Typical thicknesses for sheets are in the range of 10–50 µm. Such sheets can be produced by cold rolling. Common materials, which can be rolled down to such low thicknesses, are for example aluminum (Al99.5), low carbon steel, stainless steel or copper (E58). These materials are available in large quantities at moderate prices. Aluminum foil is for example not only used for the packaging of food but also for thermal insulation, cables and electronics. These materials are work hardened during the cold rolling process and are annealed afterwards to recover their original material properties. All these materials mentioned are rather soft and pliable. This diminishes their potential as construction materials for micro parts.

Keywords

Physical Vapor Deposition Artificial Ageing Punch Force Target Power Material Accumulation 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Latin

cp

Heat capacity (J/(kg K))

d

Diameter (mm)

ES

Surface energy (J)

F

Force (N)

kf

Yield stress (MPa)

l

Length (mm)

P

Power (W)

Q

Heat (J)

q

Latent heat (J/kg)

r

Radius (mm)

t

Time (s)

T

Temperature [°C (K)]

TD

Deposition temperature [°C (K)]

TM

Melting temperature [°C (K)]

u

Upset ratio (-)

v

Velocity (mm/s)

V

Volume (m³)

Greek

α

Absorption coefficient (-)

γ

Surface tension (N/m)

η

Efficiency (-)

Φ

Amplitude (-)

 

Divergence angle (°)

λ

Wavelength (m)

ρ

Density (kg/m³)

θ

Focus diameter (mm)

σM

Tensile strength (MPa)

σN

Nominal stress (MPa)

φ

Natural strain (-)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  1. 1.IWTBremenGermany

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