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Niekonwencjonalne
technologie i procesy przeróbki plastycznej
Procesy wyciskania i kucia z udziałem fazy
ciekłej
What is Thixoforming? The
University of Sheffield Technology Transfer Centre:
A spheroidal microstucture suitable for thixoforming; A conventional dendritic microstructure
University of Sheffield: 1), 2), 3), 4), 5),
6), 7) >
1)
Feedstock Routes; Rap
and Sima Routes Depending on Deformation and Recrystallation
^ Magnetohydrodynamic
Stirring (MHD)
2) Development of
Hypereutectic Aluminium Alloys for Thixoforming based on the A390 composition
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Mechanical properties of thixoformed
A390 alloys |
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As thixoformed |
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Alloy |
E (GPa) |
Y.S. R0.2
(MPa) |
UTS Rm
(MPa) |
Elong. A5
(%) |
Hardness (HRB) |
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477 |
78 |
215 |
271 |
1.04 |
67 |
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500 |
76 |
225 |
277 |
0.72 |
71 |
|
501 |
91 |
252 |
261 |
0.3 |
76 |
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T6 |
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477 |
78 |
NA |
429 |
0.16 |
84 |
|
500 |
82 |
NA |
411 |
0.10 |
84 |
|
501 |
94 |
348 |
354 |
0.25 |
83 |
Microstructure of alloy 477: as received and as thixoformed (x100):
Automotive
Component (Brake Drum); An
automotive part (brake drum) was thixoformed by Stampal S.p.A. ^
using the A390 standard alloy. The part shown below is in the T6 heat treated
condition, weighs 1.7 kg, and is substituting a cast iron part. The part offers
lower weight and good wear resistance.
3) Microstructural Development
Microstructural development in slugs cut out from extruded bar of 7075 wrought aluminium alloy (longitudinal cross section), heated isothermally at different
temperatures and holding times (in
brackets). (e) represents good thixoformable
microstructure:
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a) 465°C (1.5
min) |
b) 575°C (1.5
min) |
c) 610°C (2
min) |
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d) 615°C (2
min) |
e) 620°C (2
min |
f) 625°C (2
min) |
4)
Novel Metal
Matrix Composites Based on Hypereutectic Aluminium/Silicon Alloys
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Comparison of Forming Temperatures and Solidification Ranges of Al/Si
Alloys in Thixoforming and Casting
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Strength, Youngâs Moduli and Shear Moduli of Thixoformed Al-Si-Cu
Alloys
#
Supplied by Showa in Japan |
5) Thixoforming Of An
Electric Motor Endplate
Die Used For Thixoforming Electric Motor
Endplate:
6a) Description of Press 6b) Thixoforming of
copper electric motor rotors
Thixoformed rotor with copper squirrel
cage ^
The rotor is about 75 mm diameter
and 75 mm high. It consists of a stack of 40 soft iron laminations held together by the copper conductor, which is thixoformed through the
stack.
7) Thixoforming of High
Temperature Alloys
Injection of hot billet ^ Tool steel part after injection ^ Thixoformed M2 tool steel and
stellite ^
Publikationen (różne publikacje w PDF):
Thixoforging
of aluminium alloys with a hydraulic forging press (pdf)
THIXOFORGING
AND THIXOEXTRUSION - BENEFITS
OF INNOVATIVE FORMING TECHNOLOGIES (pdf)
Untersuchungen
zum Thixoforming von Stahlwerkstoffen
^Induktive Erwärmung eines Stahlrohlings in den
thixotropen Bereich ^Auswahl am IFUM thixogeschmiedeter Stahlbauteile
Zbiory
ogólne:
Słownik – Glossary - AEC
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Aktualizowano:
2003-03-25