suspicious friction coefficient for anodized die extrusion profile
suspicious friction coefficient for anodized die extrusion profile
(OP)
Hello,
strange situation - anyone can help me
I have a profile, drawing stated as follows:
material Aluminum 6063F22, Aging T6, natural anodizing 10my
now, two different batches from the same supplier have difference in friction coefficient (against homogenous polyurethane material) around 40% !!!
does anyone know how the hell they manage to achieve such unstability?....
I discovered this today and I got stuck - is it other type of alloy, maybe something with anodizing?....
strange situation - anyone can help me
I have a profile, drawing stated as follows:
material Aluminum 6063F22, Aging T6, natural anodizing 10my
now, two different batches from the same supplier have difference in friction coefficient (against homogenous polyurethane material) around 40% !!!
does anyone know how the hell they manage to achieve such unstability?....
I discovered this today and I got stuck - is it other type of alloy, maybe something with anodizing?....





RE: suspicious friction coefficient for anodized die extrusion profile
Can you provide more information regarding processing of the test samples, how the testing was conducted, and the results of the testing.
RE: suspicious friction coefficient for anodized die extrusion profile
I clean one of the samples 12 hrs in aceton (the one which has definitely lower friction coefficient), because I thought it will remove invisible oil film - no bigger effect
I will estimate friction coefficient today, but organleptic there is no doubt that there is a diffference
honestly - I do not know what is the reason, I was hoping that profilography test will give an answer, but it creates more questions
RE: suspicious friction coefficient for anodized die extrusion profile
RE: suspicious friction coefficient for anodized die extrusion profile
we have measured angle when sample starts to slide
17 deg vs 25 deg which is 0,3 v 0,46
I also attached results and screenshots - maybe I wrongly interpreter results (honestly I hope so)
RE: suspicious friction coefficient for anodized die extrusion profile
RE: suspicious friction coefficient for anodized die extrusion profile
I haven't explained exactly that both of them were machined.
Now we checked friction coefficient before and after machining, even if it is cleaned with alcohols etc. you can not completely remove invisible thin oil film.
Does anyone has experience with cleaning systems etc?
RE: suspicious friction coefficient for anodized die extrusion profile
RE: suspicious friction coefficient for anodized die extrusion profile