RESPIRABLE SILICA
HAZARD FREE
INVESTMENT POWDER’

Technical Information
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Investing Procedure

The investing procedure remains the same for vacuum mixing and conventional hand mixing using the same standard equipment currently used in any jewellery manufacturing operations.

Water : Powder Ratios

The Water / Powder ratio recommended for best results is between 36 – 38 parts water to 100 parts powder (36-38:100) for machine mixing or between 38 – 40 parts water to 100 parts powder (38-40:100) for hand mixing.

Burnout Cycle

Burnout cycle remains the same as regular investment powder, meaning casters do not have to modify any burnout procedure. Can be used in all current burnout furnaces.

150℃/HR
300℉/HR
0
HRS
230℃
450℉
0
HRS
150℃/HR
300℉/HR
0
HRS
730℃
1350℉
0
HRS
Cool to Casting Temperature & hold for at least 1 hour before casting

WATER TO POWDER RATIO

MACHINE VACUUM MIXING 36-38:100
HAND MIX THEN VACUUM 38-40:100

MIXING PROCEDURE

MACHINE VACUUM MIXING Min
Weigh out water and powder 0
Add powder to water 0
Mix under vacuum 4
Pour flasks 2
Vacuum flasks 2
Total time taken 8
HAND MIX THEN VACUUM Min
Weigh out water and powder 0
Add powder to water 0
Mix by hand 1
Mix with machine 3
Vacuum mixer bowl 1
Pour flasks 1
Vacuum flasks 2
Total time taken 8

Alloys

Suitable to cast all non-precious and precious alloys including High Palladium White gold, however it is not suitable for Platinum or Steel casting.

Surface Finish

X-SIL has been engineered to at least match all cast surface finishes from our premium recipe investment powder range.

Investment Powder Storage

To be stored under standard investments powder conditions <30°C/86°F

Disposal

X-SIL is a non-hazardous waste product to be disposed of in line with local authority regulations.

Downloads

Recommended Procedures Datasheet

Investing procedure, water:powder ratio, burnout cycle etc.
(924kb PDF)

X-SIL Product Information

Background information on the risks of silica and benefits of X-SIL
(3MB PDF)