SIAM CASTING POWDERS LTD.
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SCP - Products
INVESTMENT
POWDERS
POWDERS
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Investment Powders
Siam Casting Powders
Supreme
SACK : 22.5 kg. (50 lb.)
Drum : 22.7 kg.
Supreme is a superior quality gypsum-bonded jewellery investment powder which has been specially developed by our research team. It is an ideal investment powder for casting silver and all yellow gold. Supreme can withstand the high temperature of White Gold alloy up to 18 carat.
Product Detail
Supreme
Supreme offers the following benefits to the jewellery caster :
- High purity raw materials graded and selected especially for jewellery lost wax casting.
- Increased refractoriness gives better thermal shock resistance during burnout and casting.
- More user friendly able to perform in a wider set of parameters.
- Suitable for all metals especially 18kt Gold or fine filigree work.
- Smoother surface finish – less polishing required.
- Smooth creamy consistency during mixing and pouring.
- Can be used for casting both by the centrifugal or vacuum assisted methods.
Technical Data
<table class=”demTable”>
<tbody>
<tr>
<td class=”scpb-1″>Powder / Water Ratio :</td>
<td class=”scpb-2″>100/38</td>
</tr>
<tr>
<td class=”scpb-1″>Working Time @ 25c Slurry Temp :</td>
<td class=”scpb-2″>8-9 min.</td>
</tr>
<tr>
<td class=”scpb-1″>Gloss Off Time @ 25c Slurry Temp :</td>
<td class=”scpb-2″>11 – 13 min.</td>
</tr>
<tr>
<td class=”scpb-1″>Thermal Expansion At 750c :</td>
<td class=”scpb-2″>1.2%</td>
</tr>
</tbody>
</table>
WATER TO POWDER RATIO
| Machine Vacuum Mixing | 38 : 100 |
| Hand Mix Then Vacuum | 38 : 100 |
| Use de-ionised water Weigh water and powder Slurry temperature 21 ํC Leave for 90 min to stand before burn out |
| MACHINE VACUUM MIXING | |
|---|---|
| 0 min | Weigh out water & powder Add powder to water |
| 1 min | Mix under vacuum |
| 0.5 min | Stop mixer and scrape blades |
| 3.5 min | Mix under vacuum |
| 2 min | Pour flasks |
| 1 min | Vacuum flasks |
| 8 min | Total time taken |
| HAND MIX THEN VACUUM | |
|---|---|
| 0 min | Weigh out water & powder Add powder to water |
| 1 min | Mix by hand |
| 3 min | Mix with machine |
| 1 min | Vacuum mixer bowl |
| 1 min | Pour flasks |
| 2 min | Vacuum flasks |
| 8 min | Total time taken |
