§ 18
How much concentrate and how much water?
Answer: Phosphate-bonded investment material controls expansion with the special fluid's concentration: the more concentrate the greater the expansion. The manufacturer states fluid per powder pack and a concentration according to alloy type and work eg 50% BegoSol HE for precious alloy and 90% for base metal. The calculator divides the fluid into concentrate and distilled water so you hit the ratio every time.
Væske i alt (ml) = pulver (g) × væske pr. 100 g ÷ 100
Koncentrat (ml) = væske i alt × koncentration ÷ 100
Destilleret vand (ml) = væske i alt − koncentrat
| Symbol | Meaning | Unit |
|---|---|---|
| pulver_g | Powder | g |
| vaeske_ml_100g | Fluid per 100 g powder (from instructions) | ml/100 g |
| konc_pct | Concentration of special liquid | % |
| = | Special fluid (concentrate) | ml |
| = | Distilled water | ml |
| = | Fluid in total | ml |
Does not apply when
The calculator's own default values inserted. The figures are calculated with exactly the formula the tool uses.
Substituted
Giver
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Du bruger den, når du blander fosfatbundet indstøbningsmasse og skal dele væsken op i specialvæske og destilleret vand efter legering og arbejde.
En pose på 160 g skal blandes med 25 ml væske pr. 100 g. Til ædel legering skriver BEGO 50 % specialvæske.
It means: Du skal bruge 20 ml specialvæske og 20 ml destilleret vand, i alt 40 ml.
To poser på 160 g skal bruges til en stor bro i uædel legering, og BEGO skriver 90 % specialvæske.
It means: Du skal bruge 72 ml specialvæske og kun 8 ml vand.
Højere koncentration giver mere ekspansion og et større emne.
Prøv støbningen på modellen. Sidder kronerne for stramt, skal koncentrationen op næste gang.