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mehongbo · (This post was last modified: 08-26-2008, 02:57 PM by mehongbo.)

Hi,

Does anyone know the typical surface roughness of TS crc coating after grinding should be on combustion parts?

Thanks

H.B.

***Gordon*** · 08-26-2008, 03:27 PM,

Hi H.B.

to the Surface Engineering Forum.

First I assume "crc coating" is chromium carbide/nickel chromium coating.

I don't know what is typically required for combustion parts, but typical Ra roughness capabilities for these coatings lies somewhere between 0.1 - 0.6 micrometres for grinding with possibility of getting down to ~0.05 with lapping/super-finishing. Obviously, this is very dependent on process parameters, materials and grinding procedures.

mehongbo · 08-26-2008, 07:42 PM,

(08-26-2008, 03:27 PM)Gordon Wrote: Hi H.B.

to the Surface Engineering Forum.

First I assume "crc coating" is chromium carbide/nickel chromium coating.

I don't know what is typically required for combustion parts, but typical Ra roughness capabilities for these coatings lies somewhere between 0.1 - 0.6 micrometres for grinding with possibility of getting down to ~0.05 with lapping/super-finishing. Obviously, this is very dependent on process parameters, materials and grinding procedures.

Very good. I appreciate it Gordon

H.B.

Amanda · 10-14-2010, 09:56 AM,

(08-26-2008, 03:27 PM)Gordon Wrote: Hi H.B.

to the Surface Engineering Forum.

First I assume "crc coating" is chromium carbide/nickel chromium coating.

I don't know what is typically required for combustion parts, but typical Ra roughness capabilities for these coatings lies somewhere between 0.1 - 0.6 micrometres for grinding with possibility of getting down to ~0.05 with lapping/super-finishing. Obviously, this is very dependent on process parameters, materials and grinding procedures.

Great answer! Normally we get Ra to .125~.25 on combustion parts.

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