GC EUROPE Fujivest Super - Manual (Page 25)

25
Focus Edition from GC
5
Effects of the main factors influencing the casting results
Factors influenced by
customers
Standard advise in IFU Change
Effect on
expansion
level
Effect on
Fit
Effect on
Surface
of casting
objects
Effect on
mould
cracks/
defects
Powder Liquid ratio
Standard ratio :100 g powder /
22 ml distilled water
Higher
(=more powder)
# # $ &
Lower
(=more liquid)
~ – ~ – # &
Storage temperature
Store powder and liquid at normal
room temperature (23°C).Do not store
the powder above 35°C. If stored below
21°C, let powder and liquid adjust to
room temperature before use. Do not
store the liquid below 5°C,once frozen,
the liquid can not be used anymore
Higher Uncontrolled Uncontrolled $ &
Lower
~ – ~ – ~ – ~ –
Working temperature
(=temperature of
powder and liquid)
Favourable powder & liquid
temperature is 21-23°C.
Higher $ $ $ $
Lower # # $ ~ –
Dilution ratio
Dilution ratio as advised in IFU
per type of alloy
Higher
concentration
# # ~ – #
Lower
concentration
$ $ ~ – $
Setting time
(waiting time before
goining into furnace)
20 min
Longer # # & #
Shorter $ $ $ #
Mixing speed of
vacuum mixer
320 - 420 Rpm
Higher $ $ $ #
Lower
~ – ~ – ( &
Mixing time with VAC
mixer
1 min with Vacuummixer
Longer ( ( # &
Shorter ~ – ~ – ( &
Pre-Vacuum
Depends on type of investement,
consult IFU
> 15 sec $ $ $ ~ –
Ringtype
Depends on type of investement,
consult IFU
Ring ~ – ~ – # $
Ringless & & ' #
Quality of water to
dilute
Use Distilled water
Distilled
~ – ~ – ~ – ~ –
Tap water Uncontrolled Uncontrolled Uncontrolled Uncontrolled
Key to symbols
No measurable difference ~ –
Higher #
Lower
$ –
Slightly higher &
Slightly lower (