[SEL] Foundry Question

[Keith Kinney]

Rupert
What design of naturally aspirated burner do you use.  I just bought a  
new foundry set up and would like to change it from a blower to  
naturally aspirated burner.
Thanks.
Keith


On Aug 4, 2009, at 8:57 AM, Rupert wrote:

> 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/
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Keith Kinney
kkinney at herculesengines.com
WWW.HerculesEngines.com