sales@romanoff.com | www.romanoff.com
4.14 Investment material
Generally, there are three types of investment:
Gypsum-bonded investment materials for metal temperatures up to 1250 °C. (Flask tem-
perature up to 730 °C) These are standard investment materials for gold, silver, bronze,
etc. These investment materials are stirred with water and the investment is easy to re-
move by quenching in water.
Each manufacturer has a variety of investment materials in the program. This means that
comprehensive information about the properties is necessary. Your specialist dealer can
be a suitable contact person. Please read the instructions carefully for use so that im-
portant details such as mixing ratio, water temperature and processing times are meticu-
lously strictly adhered to. Investment compounds should only be purchased from reputed
traders. Investments have a limited life.
Investments are all hydrophilic, that is, open containers accumulate with moisture. A good
solution: store the embedding embedding compound in chemical whiskey bottles. A few
dry bags (as in packs of electronic devices) help here.
Investments are a mixture of different powders. A long transport with the ship or truck can
change this mixture. Heavy parts sink down, light parts float on top. In production compa-
nies, whole containers are often homogenized in a cement mixer. It is also sufficient to put
the drum upside down and shake it.
To Next Page
Loading...