Tilt Furnace

The furnace cylinder was built using #12 Stainless Steel. Mild steel would probably work just as well and be much cheaper. The frame is built out of .083 wall 1x2 rectangular tubing. It is sufficiently strong for this size furnace but if the chamber were much larger then larger tubing would be required.

Here is the empty stainless steel cylinder for the tilt furnace next to the frame pieces that have been partially assembled. The furnace is designed to use a #10 crucible.


Here the frame is set up to measure for the bushings for the tilt mechanism. In the foreground are the two burners for size comparison.


The furnace chamber has been rammed up with refractory but the tilt bushings have not been installed yet. There is a #10 silicon carbide crucible setting next to it for size comparison.


The tilt bushings are turned out of 1 1/4 inch CRS. They have a 1/2 inch bore, a 1 inch outer diameter and a 1 1/4 face 1/ 8 inch wide. A short piece of 1/2 inch axle stock will provide the pivot on each side. The bar cannot be full width because the end of the pour spout is set at the center of the pivot bar diameter. This should make the pour stream position close to constant as the tilt is increased.


Here the pivots have been installed. Still to be constructed are the tilt handle, the plinth for the bottom and the top. The plinth will have to hold the bottom of the crucible at the right height to pour through the spout and keep it from moving during a pour. The top will not only have to provide venting but keep the top of the crucible in the correct position during a pour. The handle will have to have sufficient leverage to make the pouring relatively easy. For a larger furnace it would be necessary to provide some form of mechanical assistance like gearing or a winch a la Steve Chastain.


Here the threads in the back of the reducer bell for the micromongo burner are being turned out. This allows a little more air in with a slightly smoother flow. (Actually I just prefer the appearance.)


Here is a close up of the back of the assembled micromongo burner.


Last Modified 12/14/06 09:27