Recent content by Indicator1

A classical work of Roters, Electromagnetic devices.

Some of my co-workers suggested we use PASSIVATE IAW ASTM A967, SAE AMS2700 vs. PASSIVATE PER SAE AMS-QQ-P-35, TYPE II (current passivation). Would that be helpful?

What is the typical Molycote Z Powder coating thickness? Very important, as I have a distance of 0.001" between the shaft and the bearing.

OK, I found Everlube 9002, MoS2, meets MIL-PRF-46010F and temperature range. Should work.

My product is for aircrafts. Do I start with MoS2 application? Any documents/MIL standards on that, please?

I have a small Polysulfone, 20% Glass, 15% TFE part with OD of .03". This part will be overmolded with injection molding material. This material has 93% NeFeB powder, and the rest is Nylon 12 binder. The resultant part OD is .1". We have used Grilamid L16 nat as the binder so far. The compounder...

Israelkk, You are right about Military, Aerospace application. MIL-PRF-46010G, p.6.9 reads: 6.9 Aerospace Components – Types I and II lubricants previously found under MIL-L-0046010E are now under SAE Aerospace Standard AS5272. The SAE document still allows and use lead material to meet...

Israelkk, Yes, I have the same understanding of this situation. I am reading the MIL spec you recommended for the lubricant.

Edstainless, It is a DC application. No, it will be not saturated. It is a part of the coil core. There is another part of the coil core, which plays a major role. Shaft plays a minor role in the magnetic circuit. Sorry, I have NO data on 440C magnetism. If two materials you suggested are...

To EdStainless I understand HT is heat treatment, correct? If this material is tempered above 370C, Chromium carbide will precipitate, and it is not Stainless any more. Is that what you mean?

My problem is this shaft is a part of a magnetic circuit. I have no data for 440 C, or alloys you recommended. Are they comparable in regards of BH curve? Or comparable in regards of Coercivity and Residual flux density?

There is NO lubricant. The distance between the bearing and the shaft is .001" each side. However, the load is very low. Temperature: mostly room but can be from -65C to +125C. See the picture...

This part has been passivated per AMS-QQ-P-35, TYPE II. It is a shaft .025" OD. Hardness: 580 to 820 HV under 500g load. It appears it has some surface corrosion. Microscope observation shows small pits. Corrosion product is black. This shaft works together with a bearing, which is made of...

Thank you for this input. I assume colorants can be added to all of them. Also too: can I glue 2 parts of the same material together? I know for PTFE I can, if I etch the surfaces.

Cloa, 1. No contact with solvents. 2. UV resistance not needed (indoor, low light). Thank you.