gold star xl - pelusi.com
TRANSCRIPT
The casting of Silver and Brass for the jewellery and costume jewellery market accounts for a large percentage of worldwide production. Costs need to be minimized and Gold Star XL achieves this whilst also producing superior castings and excellent surfaces, keeping finishing work prior to plating to an absolute minimum.
Gold Star XL is specifically formulated by optimizing the particle size distribution and thermal expansion to help casters compete in the most demanding of environments for casting Brass and Silver.
www.goldstarpowders.com
XLGOLD STAR
Gold Star XL is a high quality economic gypsum bonded investment powder solution for casting Brass and Silver alloys.
Gold Star PowdersSpencroft Road, Newcastle-under-Lyme, England ST5 9JE
Tel +44 (0)1782 663600 Fax +44 (0)1782 663611 Email [email protected]
www.goldstarpowders.com
Gold Star PowdersSpencroft Road, Newcastle-under-Lyme, England ST5 9JE
Tel +44 (0)1782 663600 Fax +44 (0)1782 663611 Email [email protected]
Gold Star XL is available in 22.5kg sacks
Do not remove flasks from furnace to cast until they have been held at casting temperature for a minimum of 1 hour. If 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.
• Do no not cast with a flask temperature lower than 650°C• Slurry temperature 21°C• Leave for 90 min to stand before burnout
WATER TO POWDER RATIO
MACHINE VACUUM MIXING 38:100
HAND MIX THEN VACUUM 40:100
XLGOLD STAR
MIXING INSTRUCTIONSPOWDER TO WATER RATIO 100 TO 38
MIXING BY HAND MIXING BY MACHINE
1 Add powder to water 1 Add powder to water
2 Mix for 3 minutes 2 Mix for 4 - 5 minutes under full vacuum
3 Vacuum mixture for 1 minute 3
4 4 Vacuum flasks for 2 minutes
5 Vacuum flasks for 2 minutes 5 Remove flasks immediately from vacuum and to stand on a firm surface for 2 hours
6Remove flasks immediately from vacuum and to stand on a firm surface for 2 hours
SRS PRODUCT SELECTOR CHART
Bras
s
Silve
r
9k Y
ello
w
12k
Yello
w
14k
Yello
w
18k
Yello
w
22k
Yello
w
9k W
hite
14k
Whi
te
18k
Whi
te
Silk
Classic
Eurovest
Time in hours
0
100
200
300
400
500
600
700
800
71 82 93 104 115 126 13 14
730°C
230°C
150°C/hr
1.5hrs 3hrs 3.5hrs 4hrs 1hr
Tem
pera
ture
°C
BURNOUT CYCLE
MACHINE VACUUM MIXING Min.
Weigh out water and powder 0
Add powder to water 0
Mix under vacuum 5
Pour flasks 2
Vacuum flasks 1
Total time take 8
HAND MIX THEN VACUUM Min.
Weigh out water and powder 0
Add powder to water and mix 4
Vacuum mixer bowl 1
Pour flasks 1
Vacuum flasks 2
Total time taken 8