Diedress – 140 is an insulating coating used to protect the accurately machined die and core faces, to control solidification, to give best possible surface finish and to ease die operation.
- In GDC and LPDC, castings are produced with larger / thinner sectioned aluminium alloys.
- When hot metal (aluminium alloy at 720ºC) is cast into die (at 250ºC) the rate of heat extraction from the metal will be high and as a consequence fluidity of the cast metal will be reduced.
- Correct use of an insulating coating can control the rate of heat extraction in various parts of the die and so retain fluidity as well as provides a desirable directional solidification pattern in the casting.
- Easy release of castings.
- Easy filling of die-cavity.
- Better surface finish of castings.
- Dilute the coating with soft water in the ratio 1:3(Product : Water) mix uniformly and apply coating by spraying
- The application of the coating is varies from very thin, where maximum chilling is required and thick on runners, feeders, thin cast sections, etc.
- Spray the diluted coating on to the die and core faces using a good atomizing gun.
- The die temperature should be between 120- 200ºC so that the spray hits and dries quickly without running.
- Then re-heat the die to normal working temperature before casting metal.
- Colour : Off-White.
- Appearance : Paste.
- SECIFIC GRAVITY @ (27±3°C): 1.58 – 1.6
- 8 Kg Plastic pail