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[jrider]

Going into my 4th year with my 250 and my nozzle is shot.  How do I go about getting and installing a new one?

[slimjim]

Give Rory or Ruth a call at the office, 800-561-0700

[Sloppy_Snood]

Hey slimjim,,, if nozzle erossion is too much and cannot be controlled effectively through refractory cement formulation, tell Rory and P&M crew to look at casting an Inconel or Hastalloy C lip into the nozzle.  Nissan and other car manufacturers have incorporated these metals within exhausts for cars with high temperature signatures.

No one will like the price of the metal but I can guarantee that nozzle won't wear out for 20 years.  Just a thought. 

Time to take a look in the Engineer's Toolbox. 

LINK:  Metals-Melting Temperatures (Click Here)

[slimjim]

OH BOY! I could spend a lot of time and money on that site Slopster, Thank You!

[mlappin]

Hey Slopster, why the Inconel or Hastalloy C?

According to the chart they don't have a high a melting point as carbon steel, or will they just withstand the heat for a much longer time than stainless or carbon steel?

[Sloppy_Snood]

Hey Slopster, why the Inconel or Hastalloy C?

According to the chart they don't have a high a melting point as carbon steel, or will they just withstand the heat for a much longer time than stainless or carbon steel?

That is correct but one item the table doesn't convey well is.... very resistant to corrosion and are very tolerant of sustained elevated temperatures while maintaining its material strength.

A decent read I found on Inconel:  Checking the Pulse of Welding Inconel (Click Here)

 

[american-pacemaker]

Sloppy, I am a machinist and welder by trade and work with a lot of high temp and exotic alloys. I have been looking into this since I am installing a 250. The shop I work at does a lot of power generation work with some really exotic alloys that are way out in space cost wise but would work great. Titanium looks like a reasonable alternative. It has a melting point of around 3200 and is not hard to
work with.

[Sloppy_Snood]

Sloppy, I am a machinist and welder by trade and work with a lot of high temp and exotic alloys. I have been looking into this since I am installing a 250. The shop I work at does a lot of power generation work with some really exotic alloys that are way out in space cost wise but would work great. Titanium looks like a reasonable alternative. It has a melting point of around 3200 and is not hard to work with.

Thanks for the feedback pacemaker!     I can tell "on paper" what I beleive to work but I never lose sight of the fact that the fabricators, welders, and machinists are the ones who can really say if it will work.   

I do wonder if powdered Inconel or titanium or Hastalloy C metal could be cast into the formation of the nozzle edge?  I'm sure it could but it would take some experimentation to discover whether or not it would slow errosion to an acceptable level (say, 8-10 years on the nozzle). 

[american-pacemaker]

hastalloy x is commonly used for very high temp fuel nozzles for power generation. The cost for a nozzle the size of one in a 250 would probably send chills down your back though.

[mlappin]

To be perfectly honest a nozzle lasting four years would be perfectly acceptable to me. If a lot of wear items on the farm equipment lasted four years I'd be as happy as a pig in sh*t.