WKTaylor
Preferably for any water. It will be in contact with cooling agent, but it can also occur that 2% of time it will be in contact with normal water, so better to expect worse case scenario.
I would be happy if you could just list all the coatings there are (apart from those i already...
[highlight #FCE94F]"TugboatEng (Marine/Ocean)25 Mar 22 16:22
What is your geometry? Clear coat paint or film sounds like your best option."[/highlight]
Is it possible that clear coating would be applicable for series production of a complex cnc milled object (with grooves and threads)?
Copper Alloy: Se-Cu 7440
Protecting from water.
Temperature range: -20°C - +100°C
Shape is complex, CNC milled with a lot of different grooves and bumps.
Clear coating, i really didnt thought of that. Do you have any experience with it, what are the challanges? Is it good for big series?
Geometry is a CNC milled copper piece with up to 6 dm2. Lets say 2 dm x 1dm x 5 mm piece with small or bigger grooves all over the surface and also thread holes...
Hello,
so the coatings which I already know about:
- Chemical nickel plating
- Galvanic nickel plating
- Chrome plating
- Sn and Zn plating
- Gold and silver plating
- PVD plating
Are there any more that im missing?
I have lots of experience with Nickel plating, but the problem is since the...
@TugboatEng (Marine/Ocean)
Ah, i understand you now. Your theory is that LACK of inhibitor is causing a film.
This is the coolant that is used: https://www.ekwb.com/shop/EK-IM/EK-IM-3831109813256.pdf
@dik
YES, the EK coolant was used: https://www.ekwb.com/shop/ek-cryofuel-clear-premix-1000ml
The main ingredient in the coolant is: sodium 2-ethylhexanoate .... which is actually used as a plasticizer for PVC tubing!
Is it possible that this ingredient is the reason of tubing breaking down -...
@LittleInch (Petroleum)
As you said ... aesthetics is the problem here. Functionally it doesnt cause (known) problems... i mean, if the particles are too big it could also clog the watercooling blocks, potentially. But the main issue here is aesthetics, as the big part of watercooled PC rig is...
Thank you for all the input.
He has a dryer but as you said ... its like a conditioning, not actually drying.
He is saying that he doesnt have a good machine to process PA66GF30, that the heater is not ok and that he would need a new tool to injection mould with PA66Gf30 and he can only try...
"Are you treating your water with corrosion inhibitors? Any corrosion products will form a film on all surfaces."
Are you sure about that the corrosion inhibitors are causing a film?
And actually it is not water but a "coolant" - see here...
LittleInch: You are right; i didnt know you have to do all those things to get to the picture, so here they are:
https://i.ibb.co/XXgFs60/P1000662.jpg
https://i.ibb.co/1GM6BN5/P1000713.jpg
p.s. Can i directly reply to a post so you can be noticed that i replied? Cant find a button :i...
"Are there any additives in the water?
Even if there aren't this is to be expected, simple aging of the resin.
Higher quality tubing might be a big help. Such as lined tube used for food applications.
"
It is not actually a normal water but a coolant...
The problem is that so far we have been injection moulding a part with a different material, "PS GP 154", but the product is cracking - it isnt strong enough when applying force to it, doesnt satisfy its function.
We suggested to our injection moulder to make some tests with a different...
Do you have any idea why the PVC flexible tubes that i am using for my watercooling system become foggy or yellowish?
The problem is pretty common:
https://www.overclockers.com/forums/attachment.php?attachmentid=110506&d=1337935992...
Im making a device which must hold a little less than 1 bar of air pressure.
I have the problem as it is leaking and im not sure why ...
I noticed that where one part is screwed to another (M assembles to the female hole with Flat Oring), there is a little damage because start
of the thread is...
Aluminium would probably be anodised, so the corrosion wont be a problem. IF we choose aluminium.
You are right - that is the best way to find out about the price (the machine shops).
I just wanted to see another perspective of the issue, so im better informed :)
I know that Steel is lot harder to machine compared to al/brass (especially for mass production), but wasnt sure about brass/aluminium.
Also, the price of Al6082 is in our country approximately 6.7$/kg and Brass is 10$/kg (cylindrical rough material).
I dont know the cost of a free machining...
But galvanic corrosion depends if the coupling would be paired with some metal ...
in my case it would be used to couple with a plastic object - so probably this is not an issue?
Also, here it says that 6082 has good machinability (probably still a lot worse than brass if i understand you...
