Indutherm Mini Casting MC16, Technical Documentation Manual

Page: 46 / 69

System
description
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2019-10-16 4
–30
Water marking
Figure 25: water marking
Cause Remedy

Incorrect powder / water ratio (too much
water).

Use correct amount of water (especially
important with vacuum investing ma-
chines).

Work time of investment not used up.

Ensuring the work time is used up and
slurry temperature is 20
– 22 ºC.
Gas porosity
Figure 26: gas porosity
Cause Remedy

Overheating the metal.

Reduce metal casting temperature.

Inadequate burn out.

Increase the time at 730 ºC.

Flask overheated during burn out.

Ensure maximum burn out temperature
does not exceed 730 ºC.

Impurities in the metal.

Do not use more than 50 % recycled
alloy and ensure it is clean.