SIAM CASTING POWDERS LTD.
HIGH QUALITY INVESTMENT POWDERS
AND CASTING EQUIPMENT

 

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Products
Siam Casting Powders Ltd
Investment Powders
Supreme
Professional
Value
Pro - HT
Omega
Gem Set
Silicone Rubbers
Silicone Rubbers
High temperature
Silicone Rubbers
Low temperature
Injection Waxes
SCP Waxes
Freeman
 
Investment Powders
Investment Powders

Gem Set

Gem Set has been specially formulated to protect precious stones such as diamonds, when they are set into the wax patterns, burned out and cast , to ensure no damage to the stones during the burn out cycle.

Gem Set

Gem Set has been specially formulated to protect precious stones such as diamonds, when they are set into the wax patterns, burned out and cast , to ensure no damage to the stones during the burn out cycle. The maximum temperature achieved during the burnout cycle MUST not exceed 630°C.

Gem Set holds the stones in place during the dewax period, and protects them from the heat during the remainder of the burnout process, andthe molten metal when cast. Gem Set will producehigh definition, clean surface castings, with stones that remain as clear as they were before burnout.

Extensive permeability testing and development has taken place to ensure maximum carbon is released from the mould during burnout. It is formulated with the special additives to enhance stone-in-place casting results and improve cleanoff. Gem Set will cast all alloys melting below 1250°C.

WATER TO POWDER RATIO

  • Machine Vacuum Mixing 38 : 100
  • Hand Mix Then Vacuum38 : 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 HAND MIX THEN VACUUM
0 min Weigh out water & powder
Add powder to water
0 min Weigh out water & powder
Add powder to water
1 min Mix under vacuum 1 min Mix by hand
0.5 min Stop mixer and scrape blades 3 min Mix with machine
3.5 min Mix under vacuum 1 min Vacuum mixer bowl
2 min Pour flasks 1 min Pour flasks
1 min Vacuum flasks 2 min Vacuum flasks
8 min Total time taken 8 min Total time taken
90 min Remove tape from flasks after

Do not remove flasks from furnace to cast until they have been held at casting temperature for a minimum of 1 hour. lf held for less than 1 hour, the core of the flasks will be at a much higher temperature than the digital temperature display states, and may result in metal mould reaction.