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- Conventional hot air drying of moulds with a microwave mould drying and conditioning oven in the background.
- Old process used to take 12 hours to dry, with microwave only 1 hour.
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- Section of furnace lining refractory material being conditioned before de-moulding.
- The microwave process is virtually unaffected by the shape of the pieces and only the heating time being adjusted for very large or small items.
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- Filled mould used to take 6 hours before de-moulding and part separation taking place.
- A filled mould has been pushed into the oven by the automatic ram and the doors are about to close.
- This tunnel oven holds three moulds which enter and exit singly. While inside they receive three periods of about four minutes of microwave heating.
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- The parted mould has entered the 84Kw microwave dryer and the doors are about to close. The next two have moved forward.
- De-moulded castware is seen on the nearest roller track where they will be fettled and passed to the piece dryer.
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- The dried moulds are about to exit the dryer unit after receiving 16 periods of microwave heating of about 3.75 minutes each.
- They are then returned to be reassembled and refilled to begin their round again.
- The total drying time is 1 hour compared to 12 hours using conventional drying methods.
- Number of moulds reduced by 60%.
- Moulds last 4-5 times longer.
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