Ready-for-use IPA based magnesite coating for spray, brush and swabbing application.

The product
COTPOL MA31RM is a ready-for-use IPA based magnesite coating having excellent suspension and covering properties. COTPOL MA31RM is suitable for use on green sand, CO2 set and resin bonded sand moulds/cores, and for casting Manganese Steel.

Reason to use
When casting high temperature Manganese Steel, it is necessary to coat the sand surface, which come into contact with molten metal to prevent sand wash, sand erosion, metal/mould reaction and burn-on.
COTPOL MA31RM is designed to withstand high temperature of molten metal while acting as a barrier between molten metal and a core or mould surface thereby helping in preventing sand burn on, metal penetration, wash erosion, metal/mould reaction, and other common defects.
COTPOL MA31RM is a carefully formulated coating to ensure a highly refractory, non-wettable and non-reactive coating layer with optimum application properties to give excellent casting finish.

»  Offers good casting finish, free from burn-on and metal mould penetration to reduce fettling costs and improve productivity.
»  Does not cause any coating inclusion problems.
»  Uses least toxic carriers and hence safe to use.
»  Evolves very low gas during casting.
»  Can be easily remixed and applied due to its excellent suspension characteristics.

1. Remix the COTPOL MA 31RM coating homogeneously before use.
2. Apply by brush or spray on mould or core surface and light off. Allow to burn out and cool to ambient temperature, before applying the second layer of coating.
3. In case of large mould/core surfaces, it is ideal to apply COTPOL MA31RM in smaller areas at a time followed by immediate light off.

While COTPOL MA 31RM exhibits good suspension properties, it should be thoroughly remixed before use.
Note: Water must not be added to COTPOL MA31RM for dilution.


  Physical state   Yellow slurry
  Specific gravity (gm/cc)   1.35 -1.40 gm/cc
  Viscosity   13 -15 sec. by B4 Ford Cup

Standard packing
COTPOL MA 31RM is available in 30 kg polycarboy.

Shelf life and storage
COTPOL MA 31RM has a shelf life of 6 months. The polycarboys are to be kept in a well-ventilated place, preferably under shade, away from exposure to sun and rain.

»  Replace the lid of the carboy immediately after use to prevent evaporation of the carrier.
»  Avoid continuous skin contact as the degreasing effect may cause local irritation.
»  Inhalation of high concentrations of the vapour can be harmful and should be avoided.