Pretty frustrating having most of the people appreciate the troubleshooting and fix only to have the young engineer argue every point and be upset that the machine functions as designed. But thank you guys for all your information, it helped me explain my point a good amount and helped me learn...
Yesterday I ended up having to talk to their bosses and mine to kick all of their well intentioned staff off the machines as they were doing more harm than good.
Today I setup the oven as a standalone oven, pointed out some facts about their current setup that needs to be fixed for any oven to...
Helium leak test on old unit was by sniffing, I was not here for the leak check on the new oven. I'm hoping to complete one tomorrow but as of now the new oven pressure reading has been holding at 1x10-2 mbar for about an hour.
My composite toes were made for stepping. Unfortunately when I arrived they had the oven disconnected and taken somewhat apart. Tomorrow I will be setting up for standalone operation and doing some helium leak testing on it, according to them it went down to -11 on a Pfeiffer adixen unit, the...
It held vacuum with no change for about 6 hours, they ran the oven at that point. It's baked off during testing and they baked it off again, supposedly they performed a helium leak test with no signs of a leak but now it's claimed that a water cooling line is leaking even though the cooling...
@3DDave
the ar feed has been swapped from the box atmosphere to right from house gas, i'll have to see if a tank is avaliable although the other oven is on the same house gas and even though it too is fed from the box it is producing parts fine, well was, they did something to cause the oven to...
I am not familiar with what they are using the ovens for, I only know that the oxidation is a problem for them. I am just trying to get a little more familiar with the chemistry and process so, I can be better prepared for troubleshooting. Though I do not believe this to be an oven issue, I...
I will be visiting the site tuesday, hopefully will be able to run some tests then.
the blue tint is from moisture? how is the blue different from the golden color?
the purge gas is a house supply, the second unit is connected to the same gas without issue.
They took it upon them selfs to clean the chamber with iso, I recommend clean dry rags as well.
I have not had a chance to use the mass spec yet.
Yes there is a port i can tie into
I can not answer that...
I am not part of the process about how the parts are handled prior to entering the oven, I have inquired about that, They did clean the inside of the oven with iso alcohol though. If I have to head back down to the site I will be traveling with a mass spectrometer. The readings for o2 and h2o...
Thank you for the quick response.
H2o is supposedly less than .1ppm
Yes light yellow/gold tint color is correct
Would the 150C ar purge cycles have a better chance at removing moisture than 600c 48hour bake? that was done over the weekend.
Also besides h2o and o2 is there anything else that...
I am troubleshooting an issue with some things I don't quite understand and would like some input.
set up:
Stainless Steel item is placed under vacuum and heated up to 300 degrees Celsius after multiple argon purge cycles. When part comes out there is oxidation on it, I am being told this can...
