Tuesday, 28 February 2012

Completely Baffled!

The last article on the superheater showed the pattern made to cast a baffle plate for supporting the centre of the superheater and directing the hot fire-gases through the tubes instead of up the large hole in the centre.

The baffle plate has now been cast in SG420-12 Malleable Iron by East Coast Casting Co Ltd of Thetford and fitted to the superheater assembly by
Grant Goold.
Baffle plate in place
The baffle plate largely blocks the gap through the centre
so the heat passes through the tubing
View from above showing the support rod to the top plate
The superheater and boiler top plate assembly are now ready for fitting into the top of the boiler via the top of the cab (where there is not a cab roof yet!).

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