finishing.com -- The Home Page of the Finishing Industry
A website for Serious Education, promoting Aloha,
& the most FUN smiley you can have in metal finishing

HomeFAQsBooksHelpWantedAdvertiseForum
topic 12131

Punch Polishing


 

We manufacture punches for the metal stamping industry and have a job that requires a 16 rms polished finish. If we do no have a gauge to check this with, how would you compare this finish to a common part. eg: the same as a valve stem in a car? smooth as glass? We usually polish with a buffing wheel but are never sure what is expected for different rms finishes.

Thanks,

Ken Weiler
precision products - Waterloo, Ontario, Canada


Profilometer

 

Not sure how to answer your question. A 16 RMS is not a very fine surface finish. It is a good quality finish for secondary chemical plating processes. A profilometer will instantly tell you your RMS. Comparables are first, normal mill steel finish is 35 RMS, if refined or worked in a mass finishing system using a coarse ceramic preformed media shape, about the best results would be about 22 RMS. Using a fine to medium composition from coarse, you may achieve close to a 16 RMS. You may require a 3 step process. Depending on the size and aggressiveness of the deburring system this can take anywhere from about 30 min./cycle to 4 hours. There are a lot of variables here.

tony kenton
AF Kenton
Nova Finishing Systems Inc.
Hatboro, Pennsylvania



This public forum has 60,000 threads. If you have a question in mind which seems off topic to this thread, you might prefer to Search the Site

ADD a Q or A to THIS thread START a NEW THREADView This Week's HOT TOPICS

Disclaimer: It's not possible to diagnose a finishing problem or the hazards of an operation via these pages. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations may be deliberately harmful.

  If you need a product/service, please check these Directories:

JobshopsCapital Equip. & Install'nChemicals & Consumables Consult'g, Train'g, SoftwareEnvironmental ComplianceTesting Svcs. & Devices


©1995-2017 finishing.com     -    Privacy Policy
How Google uses data when you visit this site.