Our supplier has developed a range of gas and electric rotary furnaces, specifically designed for pre-heating ceramic moulds for investment casting. The rotary furnaces combine the production advantages of continuous furnaces with the flexibility and handling of chamber furnaces.
Often, therefore, not only in application sectors such as aerospace and energy but also in industry and mechanics it is necessary to process these costly moulds in a 2 step-firing process:
The first for the Burnout-Pre-fire in general in extractable bogie hearth furnaces. Followed by a thorough inspection, cleaning and preparation of the clusters; Lastly a second firing to Preheat in a rotary hearth furnace before casting, often in a vacuum melting furnace.
The main advantages in using preheating rotary hearth furnaces are:
- Thermal uniformity over the entire size
- Furnaces capable of working continuously on a 24-hour basis for over 6 months
- The option of simultaneously processing different sized moulds with different preheating times
- Simple and safe handling since the moulds are always available at the front of the door.
- Use of manipulators and robots in the event of medium-large sized moulds
- Adoption of supervisory systems capable of making the processes – through which each mould passes – traceable and interacting, if required, with corporate management system.