[SEL] Foundry Question

[Rupert]

Hello Peter,
	I have a similar setup for doing my metal casting except I use a
naturally aspirated burner. The naturally aspirated burner is still 
noisy but not as noisy as most fan driven burners. Also, there is no 
difference in noise level when melting the different metals. What 
changes is the heating time.
	Two reasons I chose a naturally aspirated burner are noise level and 
the fact that a power failure won't interrupt a melt.
	In your case, changing the fan to a fan that produces the same pressure 
and volume of air at a lower rpm will reduce the noise a little.

Rupert

peter ogborne wrote:
> This is a difficult question ,at least I mean getting the correct
> answer .. I have friend who has had quite good success with his home
> foundry . To date he has cast alluminium ,brass and bronze and a
> small number of cast iron jobs .He cast two CI bearing caps for me
> and they machined well and the castings are first class. His home
> made furnace is fueled by LPG with an air blower . The furace itself
> is a crucible with flame entering at a tangent . There has been no
> great problem with noise apart from the normal ''Roar'' of the blower
> and flame whilst melting Alluminium ,Brass or Bronze . With higher
> temperature required for the Iron melt comes a high frequency scream
> It alternates in its volume ..Unfortunately this noise now presents a
> neighbor problem.It only occurs with the higher temp required for the
> iron. I know this is not an explicit explantion of the symptons but
> has any one experienced anything like this ? 
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-- 

yvt

Rupert Wenig
Camrose, Alberta, Canada.	

email: rwenig2 at xplornet.com
	
http://users.xplornet.com/~rwenig/Home/