Hi there,
We have a production plant with different workbenches. All of them have the same equipment. In order not to mix up the tools they are identified with colours.
Just wrapping (insulating) tape around them.
This system is not working so well, because the tape comes off. Here a picture...
I don't know details, I was looking for some guidelines since the problem is impacting in the project time line
The oxygen measurement is a good idea.
Preheat is one of their next steps
I found this post and there are very nice recommendations:
https://www.eng-tips.com/viewthread.cfm?qid=343947
Hi,
Some supplier is having problems welding an aluminium vacuum vessel.
The hydrogen from the air moisture is diluting into the melted aluminium during the welding process. There are large bubbles when it solidifies.
X-rays are showing the problem.
The new approach is pre heating the...
Now I would like to explain the case I am working on.
We have a chamber which has a section (we call it "insert") that goes inwards. Here an sketch:
I want to calculate the wall thicknesses A, B and C, so we divide the problem in 3 sections to support an overpressure of 3 bars (200 N/m2...
HTURKAK,
You are absolutely right. I got confused with the capital P (single load) and the pressure.
I'm still puzzled because according to the formulas:
P = q*a^2
shouldn't a Pi be included in the formula?
the integrated load (P) should be equal to the pressure (q) times the area (Pi*a^2)...
I also checked Roars, but found this nice (easy) equation in the Timoshenko
Next step is running some simulations, but I like first calculating "by hand" to get an idea
thanks
Here is the definition of "h":
I get to the conclusion of the higher stress if we have the same thickness (h) and pressure (P)
The relation a/b (outer/inner diameter of the bulkhead) and not the absolute dimensions drive the equation.
What about the area? should it play a roll?
cheers,
Hi,
I wrote some time ago asking for and end-cap to close a vacuum volume. I learnt a lot from that post and now I am bringing a similar case.
https://www.eng-tips.com/viewthread.cfm?qid=416816
After some calculations I wanted to present the new case here. Checking the results there are some...
But you had a high air pressure to lift the block/skater on the rails? otherwise metal on metal won't be easy to move
3DDave, I don't understand what you mean.
It is a magnet in a particle accelerator. We need to simulate the radiation doses and check what material can take it. There is high...
Thank you all for the answers
I learnt earlier today that we can't use plastic or grease. These parts will be in a high radiation area for years, so they would be destroyed.
This now excludes the solutions with PTFE, HDPE, lathe rails...
Air bearings could be an option, but all the components...
