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.
    no popups, no spam
HomeFAQsSuggested
Books
Help
Wanteds
Advertise
on this site
FORUM
current topics
topic 6496

Steel Corrosion Treatment


(2000)

Hi there, My name is Rob and I work for a snowmobile manufacturing company. We have been trying to determine the best corrosion resistant treatment for steel flanges that are to be shrink-fitted onto a belt drive sprocket to keep the belt from sliding off.

The coating has to be cheap, common and corrosion resistant. Galvanized (zinc) is not suitable since it will wear off quickly and is not good for the heat-shrinking and removal.

My boss has suggested "Black Oxide", but I have never heard of it. Can anybody send me in the right direction?

Rob Pilgrim
- Quebec City, Canada


(2000)

Black Oxide is more commonly known as "Gun Bluing." It's pretty, that's about all. See my post- I'm looking for the same thing you are. If you have any luck, let me know.

PC

Patrick Clark
- Anchorage AK USA


(2000)

Most gears, sprockets, and couplings you would get from a power transmission house would be black oxided. If you've seen such black sprockets, that's what you were looking at. As Patrick observes, black oxide is not very corrosion resistant.

This is just an idea, not a carefully considered opinion, but you might look into salt bath nitriding. Kolene has placed some info about that process on this site.

Ted Mooney, finishing.com Teds signature
Ted Mooney, P.E.
finishing.com
Pine Beach, New Jersey


(2000)

From your brief description of the problem, I would recommend you try high phosphorous electroless nickel. It is not as "cheap" as zinc, but is close in price in some areas and if it solves a major problem, isn't it worth a little more?

Dan Weaver
- Toccoa, Georgia



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 Comment to THIS thread START a NEW threadView CURRENT 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


©1995-2018 finishing.com, Inc., Pine Beach, NJ   -   About finishing.com   -  Privacy Policy
How Google uses data when you visit this site.