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Making SS Exhaust Flanges


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#1 tiretrx OFFLINE  

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Posted October 14, 2015 - 12:06 PM

On my last build I fabbed up the pipes and flanges out off stainless.

 

20150507_200550_zpsr9jagi3x.jpg

 

The pipes were just cut and welded so that was real straight forward. The flanges were rough cut, drilled, ground and finish ground by hand. Not a biggie, but knowing this wasn't the first time I did it and wouldn't be the last made me wish there was an easier way. My solution was building a fixture that I could use on my CNC's.

 

Used 3/16" thick 316SS for it's corrosion resistence and welding attributes.

 

20150915_144327_zpsbmurx7cg.jpg?14423449

 

Clamped it up and drilled outside bolting holes to final size. Exhaust hole was left small so that it could be milled to final size.

 

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Took the drilled blank, and built a fixture. Here it is in the vise with the blank bolted down.

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A little programming on the big Mazak mill.

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Chips away!

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Viola.

20151014_114939_zpslwj8slat.jpg?14448402

 

20151014_124857_zpsl6pcjkna.jpg


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#2 chieffan OFFLINE  

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Posted October 14, 2015 - 12:56 PM

Easy when you have the tools to work with.  Hi end equipment for working of a Gt in my book.


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#3 dthomp17 OFFLINE  

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Posted October 14, 2015 - 01:00 PM

Nice job, looks very professional. Wish I had that kind of equipment to work with.


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#4 tiretrx OFFLINE  

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Posted October 14, 2015 - 01:11 PM

Nice job, looks very professional. Wish I had that kind of equipment to work with.

 

Thanks! CNC's are very productive machines. The problem being they only do what they are told, or are programmed, to do. Feeds, speeds, tool paths and the tools used are all determined by the machinist. Plotting a shape is relatively easy, the rest requires some working experience. Fortunately, I have them at my work, so I get to use them on my projects :thumbs:


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#5 olcowhand OFFLINE  

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Posted October 14, 2015 - 01:20 PM

If ya got em, use em!  :thumbs:


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#6 Cat385B ONLINE  

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Posted October 14, 2015 - 02:26 PM

Nothing but cheating, if ya axe me.
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#7 tiretrx OFFLINE  

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Posted October 14, 2015 - 02:51 PM

Nothing but cheating, if ya axe me.

 

Like a GPS on a combine, dude.


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#8 petrj6 ONLINE  

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Posted October 14, 2015 - 02:53 PM

   I agree with cat, that's cheating !!!! I can do that sort off work in my garage with a drill press and belt sander.  just got to watch your fingers :thumbs:


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#9 petrj6 ONLINE  

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Posted October 14, 2015 - 03:12 PM

   they have cnc machines like that where I work and I have been trying to convince the operator to make me some plaques for my gt-s but he has not been to receptive,  kind of stuck up like that.  only solution I can see is to learn to run it myself :D 


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#10 Cat385B ONLINE  

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Posted October 14, 2015 - 03:47 PM

Like a GPS on a combine, dude.


Oops. Yeah, I should of turned the Trimble off in the D6 before I posted that.
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#11 Canawler OFFLINE  

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Posted October 15, 2015 - 12:48 PM

Very nice.
So now that you can mass produce them, I'm guessing your selling price will drop?

Hint, hint...
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#12 tiretrx OFFLINE  

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Posted October 15, 2015 - 01:01 PM

Very nice.
So now that you can mass produce them, I'm guessing your selling price will drop?

Hint, hint...

 

Absolutely! I was explaining to one of the operators yesterday that the 1st one on CNC might take 6-8 hours to make. Building the fixtures, writing programs, troubleshooting. You could make perhaps 10 by hand using a drill press, band saw and a grinder in that time(I've done it). But every ensuing one on the CNC takes less than 2 minutes, complete. Hour after hour, day after day. I did something similar for Gravely PTO covers, and they actually turned into a consistent seller.


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#13 limebuzz ONLINE  

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Posted October 16, 2015 - 06:49 PM

Nice work. Looks great 


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#14 tiretrx OFFLINE  

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Posted October 21, 2015 - 01:00 PM

Used a flange for the 1st time on a header project for a friend today. He has a Gravely Pro 12 walk behind.

 

First, we had to make the end adapter for the the muffler flange.

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Couple angle cuts and just tacked up right now for my friend to dry fit.

20151021_131023_zpssjtyrenh.jpg?14454479

 

Also of note. The NY Mets are one game away from the World Series.............


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#15 mrmd OFFLINE  

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Posted October 21, 2015 - 06:47 PM

This was a very interesting topic until you posted that last picture.
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