designing a studded flange into a casting
designing a studded flange into a casting
(OP)
I am designing a flange to be integratated into a cast body so it need to be studded. I have had a look at ASME 16.5 and BS EN 1092-1 as the casting has to be design to machined to take a DN 50mm PN160 type 21 RF flange or a 2" ASME Class 600 Flange the casting is designed to take a maximum pressure of 160 Bar and will be cast from Cf8m or Duplex depending on the pressure and temperature of the application.
Most flanges i have designed for casting have a cast tube to the flange.
Do I design it to the required dimension given by ISO an ASME.
Or are there any further standard I need to look at espacailly with stud thread depth in to casting, stud type rolled or machined threads, and materal of studs.
Most flanges i have designed for casting have a cast tube to the flange.
Do I design it to the required dimension given by ISO an ASME.
Or are there any further standard I need to look at espacailly with stud thread depth in to casting, stud type rolled or machined threads, and materal of studs.





RE: designing a studded flange into a casting
Stud depth to be equal or a little deeper than a B16.5 studded flange. Rolled vs. cut threads are immaterial to ASME.
You have a great idea, just don't overcomplicate it. Also, make sure the casting house knows that the fully machined part will have to pass a hydrogen/helium 'bubble' test. ALL castings have internal shrink. It the caster lets the shrink get into the flange or stud areas, you have a "leaker" and it fails to meet Code.
RE: designing a studded flange into a casting
Thanks
RE: designing a studded flange into a casting
B8M is a standard stud material. Just have to design to its limitations. It is not a high-strength bolting material.
RE: designing a studded flange into a casting
thanks fro your help