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Vacuum Furnace End-User Q&A Community Latest Questions

DSnell
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DSnell
Asked: January 22, 2023In:
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I have a Class 1 aluminum vacuum brazing furnace (per AMS2750 G) that has seven zone thermocouples. When performing a system accuracy test (SAT), must I verify all seven zone temperatures are within ±2° F of the SAT thermocouples installed ...Read more

I have a Class 1 aluminum vacuum brazing furnace (per AMS2750 G) that has seven zone thermocouples. When performing a system accuracy test (SAT), must I verify all seven zone temperatures are within ±2° F of the SAT thermocouples installed for the test?

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sattc
Answer it Forward Challenge
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Answer it Forward Challenge
Asked: September 7, 2022In:
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There is a brazing vacuum furnace that we are currently using. We are experiencing various problems with it. We think that it is probably due to diffusion pump. All gaskets were renewed, difussion oil was replaced with new one. Control tests were ...Read more

There is a brazing vacuum furnace that we are currently using. We are experiencing various problems with it. We think that it is probably due to diffusion pump.
All gaskets were renewed, difussion oil was replaced with new one.
Control tests were performed with a helium detector.
Internal water cooling leak test done.
Air and Helium Tests were performed on water places.
Although we did all these, when we opened the diffusion valve, it did not work actively.
And there is a little oil on the side of the oven, what is the reason?
Our pumps are less than 1 year old and new.
There are 2 pieces of (150 capacity) 1200 Roots BOOSTER pumps.
This is an urgent issue thats why we would like your contribution and assistance regarding solving the problem as soon as possible.
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diffusion pump
Anonymous
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Anonymous
Asked: September 7, 2022In:
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I was wondering if you could kindly provide some info regarding bright annealing of 304 StSt. We have vacuum furnaces here however I require to process these parts within a hydrogen atmosphere and then rapid quench. My question is should ...Read more

I was wondering if you could kindly provide some info regarding bright annealing of 304 StSt. We have vacuum furnaces here however I require to process these parts within a hydrogen atmosphere and then rapid quench. My question is should I use a full backfill of hydrogen or perform a partial pressure control? Any advice would be greatly appreciated.

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304 steelbright annealing
Fatima Suleiman
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Fatima Suleiman
Asked: June 7, 2021In:
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Installing Viton (elastomer) gaskets on Vertical CF flanges

I was wondering if there are any tips or advice for securing a Viton gasket on a CF flange. One of our flanges would be opened frequently to access our samples but in trying to close it, so we cant ...Read more

I was wondering if there are any tips or advice for securing a Viton gasket on a CF flange. One of our flanges would be opened frequently to access our samples but in trying to close it, so we cant use copper gaskets since they are not reusable. The Viton gaskets I bought on the other hand don’t have a definite form so they don’t stay in place. I was wondering if anyone can please suggest a way to install them so that the flange seals and the Viton gasket doesn’t come off each time we open the chamber. Or if there is any proper O-ring style gasket for knife-edge CF flanges. Thank you.

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elastomer gasketsVertical CF flangesviton gaskets