I need to find cosmetic and surface finish standards
I need to find cosmetic and surface finish standards
(OP)
Please help. I've been assigned to find cosmetic and more importantly surface finish standard so that my company can put together a document to send out to our suppliers. I found ASME B46.1 standard but I'm not sure if it has what I need. I don't want to spend the $ if its not usable.
Thanks,
Thanks,





RE: I need to find cosmetic and surface finish standards
However, it may not cover what you want to know about 'cosmetic'surface finishes.
Our standard note is:
7. SURFACE ROUGHNESS TO BE ____ RMS PER ASME B46.1.
Sometimes we'll indicated required 'grain' direction.
We also have large 'brushed' stainless panels. These use a number system such as #4 if I recal correctly. I'm not sure what standard defines these off the top of my head.
RE: I need to find cosmetic and surface finish standards
RE: I need to find cosmetic and surface finish standards
Heckler
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RE: I need to find cosmetic and surface finish standards
If you don't a high level of smoothness, why pay for it?
TTFN
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RE: I need to find cosmetic and surface finish standards
RE: I need to find cosmetic and surface finish standards
RE: I need to find cosmetic and surface finish standards
Get yourself a surface finish gauge. That way, you will know what you are talking about.
I call up the finish I want on my drawing using surface finish symbols. These are explained in the Machinery's Handbook. I can look at my surface finish gauge and see which finish I want.
125 and 63 microinch finishes are popular to call up, and they do not look very good.
JHG
RE: I need to find cosmetic and surface finish standards
RE: I need to find cosmetic and surface finish standards
TTFN
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RE: I need to find cosmetic and surface finish standards
RE: I need to find cosmetic and surface finish standards
RE: I need to find cosmetic and surface finish standards
For instance for non cosmetic finishes maybe 125 is OK where as for Cosmetic you may want 63 or better. In some cases you may also want to indicate 'grain' direction.
You could come up with some standard notes for drawings that state your requirements for each case, these notes should probably include reference to the ASME spec.
This way your actual drawings are just referring to the industry spec and you don't have to worry about a separate document that may get lost by the vendor, not sent by purchasing etc. Just my 2C though.
The 'pallet' of samples will be very useful if you can get one. They're not always cheap but if your main concern is cosmetic then they may be really useful in showing you what finish you need.
Do a google search for surface chart and you’ll find some useful information.
http
Also one of these says ISO 1302:1992 uses N numbers, I’m not totally sure this is what I mentioned our suppliers specify their sheet metal in but it may be.
http
RE: I need to find cosmetic and surface finish standards
http://www.ssina.com/publications/spe_fin.html
RE: I need to find cosmetic and surface finish standards