Search results for query: *

Israelkk, We are trying to compensate for a change in volume between two pressure chambers in the order of fractions of microliters at 15 ksi. Thus resulting in a very small pressure drop in the order of pascals. This is for research work.

Hi, I am looking for a high resolution pressure compensation device such a bellows, dashpot, etc, that is capable of a resolution of 1e-7 to 1e-8 (or the highest resolution possible). The operating conditions are 15000 psi, 150°C. We are trying to pressure compensate in the order of 5 to 10...

Gentlemen, As an addition to Ed's question to Mike regarding chilling of the part. Do you mean chill the part from 1875F (we have to re-solution anneal the part and our local heat treater can only go to 1875F) or 1025F or both? What is the recommended cooling rate and minimum cooling...

Thanks guys, I really appreciate your input. You have provided some very sound advice on how we can hopefully improve the toughness properties of 15-5. I guess the first thing we have to do is get rid of the 1725F stage and then ensure that the part is rapidly quenched to 90F or colder...

Ed, The elongation is consistently 14% to 17% - it never falls below 14%. As for the aging time, I believe we are aging our part long enough because the heat treaters guide specifies 4 hours minimum and other heat treat specifications from mills such as Carpenter Steels specify a half hour per...

unclesyd, That is the question other metallurgists are asking as well. From ASTM, normally we would heat treat the condition A material to 1025F for 4 hours and air cool to RT. The spec was written in '96 buy a metallurgical engineer at our local test lab. From my conversation with the...

Hi, I am looking for a diaphragm or disc that can act as a check valve in a 1mm bore of a pressure vessel. The temperature is 400F and I would prefer the valve to be rated to 15 ksi, but the pressure can be equalized on either side of the check valve if needed. I have considered the duckbill...

Metallurgists, Our pressure vessels use S15500 stainless steel aged to H1025. The material size is a 10" bar with a 2" bore hole drilled through the center. Here is the heat treatment and aging process: - Material originally in Condition A - Heat treat to 1725°F for 4 hours - Remove from oven...

I would like to thank everybody for your advice and help. (:

Arto, Thanks for your suggestion, but my vessel actually has a x-secton like a square nut (square outside with a hole centered in the middle) when looking into the vessel from the top. Unless I am missing something, the type of vessels in Div 1 Appendix 13 are non-circular ID's and x-sections...

Hi, I have a small pressure vessel (3" x 3" x 3") that contains a centered 2" dia ID and square bolted end caps. I am assuming that the ASME minimum wall thickness formula in AD-201 still applies, but I am not sure because Section VIII Div 2 does not seem to mention anything about square or...