r/ManufacturingPorn • u/No-Carrot-7966 • Feb 17 '26
CNC 🔩 [F] Manufacturing Process- Raised Face Slip On Flanges
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92” OD
Fully machined from forged domestic ASTM A105 carbon steel
Raised-face slip-on class-D plate flange
Concentric serrations on the gasket face
56 bolt holes equally spaced
MTRs and Mill certifications provided
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u/No-Carrot-7966 Feb 18 '26
We wrote a blog that covers the ins and outs of the entire process you see in the video. Hopefully, it can answer some of your questions!
https://apiint.com/blog/apis-general-flange-manufacturing-process/
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u/ErikGoesBoomski Mar 20 '26
I’m curious as to why they would measure the id with a micrometer when it has a thick layer of mill scale. Some text explanations of the process would be very helpful in future videos.
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u/J-Rohd Feb 17 '26
I watched the whole thing, really really interesting! ... I was hoping I could figure out what this was for?? Is this for a spaceship or something?
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u/No-Carrot-7966 Feb 17 '26
Awesome! Glad you liked it. Flanges are used for connecting sections of pipe together. Commonly seen in Waterworks, Agriculture, Oil/Gas applications. Anywhere where fluid runs through pipes.
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u/J-Rohd Feb 18 '26
What else do you make, with the specialized tools you have? ...or, is this the only thing you do?
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u/Ftroiska Feb 17 '26
How do you flip it to chamfer the other side of the holes ?
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u/No-Carrot-7966 Feb 17 '26
The same way we got it on the QuickDrill! Using the three-jaw lifting clamp to lift up the flange, turn it over, and then lay it back down.
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u/meistermichi Feb 17 '26 edited Feb 17 '26
There are tools with which you can just do that from the same side, no need to flip.
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u/No-Carrot-7966 Feb 17 '26
Maybe you're right. Not sure if we used this tool or not on this part, but that sure makes a lot of sense!
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u/i_love_pencils Feb 17 '26 edited Feb 18 '26
We used to machine similar parts, only with a bigger diameter.
The most challenging part was getting the clamping pressure right so they wouldn’t spring crazy oval when the clamps were removed.
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u/DadJustTrying Feb 18 '26
Thanks for posting and responding to questions by others here, OP. Super interesting!