×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Low friction abrasive coating for steel?

Low friction abrasive coating for steel?

Low friction abrasive coating for steel?

(OP)
  I have an application where will have a steel (could be another material if needed) auger turning very slowly in sand.  Need to have as low a coefficient of friction as possible, to reduce my load and torque requirements.  Any suggestions on what to coat the auger blades with?

  We tried a sample in the lab with a polished steel auger coated with a dry lubricant spray.  Worked great initially, but quickly became very hard to turn - looks like the dry film was rubbed off and sand starting sticking.  Hard to tell that the auger was even polished, as is now very rough after the abrasion and from the sand sticking.



  Thanks for your help.


Brett Goldstein

RE: Low friction abrasive coating for steel?

We conducted studies of hard facing materials with low friction.  Try contacting:
Richard I. Smallwood
Business Development Manager
Analytical Services and Materials, Inc.
107 Research Drive
Hampton, VA 23666
Phone: 757-865-7093
Fax:   757-865-7309

RE: Low friction abrasive coating for steel?

another possible contact is micro surface corporation
www.microsurface.com

RE: Low friction abrasive coating for steel?

I would suggest thermal spray coating with a ceramic and then lapping the surface very smooth afterwards. There are a few tricks to the lapping. How big is the auger?

Another option is TiN sputter coating, but this will only be a few microns in thickness. It will not require post-lapping. Many contract hoses deposit TiN and TiCN, etc., for cutting tools. I believe   http://www.ticoating.com   also performs CVD coating. This is much thicker than a sputtered film.

Have you tried case hardening?

RE: Low friction abrasive coating for steel?

www.surfalloy.com

Their products mainly increase the coefficient of friction, but there is one product that descreases it.

RE: Low friction abrasive coating for steel?

Brett,

I work for a company (IonBond) that does both PVD (cathotic arc deposition, and sputtering) and CVD coatings.  Depending on the size of and material used for your auger, either process could be beneficial.  You can check out more at www.ionbond.com.  ;

Also, thermal spray ceramics and carbides can be useful in these applications due to the ability to apply them thicker than PVD and CVD films.

Good luck,

Mike Nielsen

RE: Low friction abrasive coating for steel?

Try a dry lubricant that is easy to apply yourself and can be found at www.kiss-cote.com.  It has worked for many of my applications.

Good luck,

Malcolm

RE: Low friction abrasive coating for steel?

If the geometry of your stirrer permits then the best way is to bond small tiles to the front faces of the arms - - the sides also if necessary.  The tiles are extreemly hard wearing and made from Alumina or even better, from Reaction Bonded Silicon Carbide.  they will polish to a smooth glossy finish and last for ever.  Regards. DW

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


Resources

eBook - Integrating the Engineering Ecosystem
Aras Innovator provides multiple options for integrating data between systems, depending on the scenario. Utilizing the right approach to meet specific business requirements is vital. These needs range from authoring tools, federating data from various and dissimilar databases, and triggering processes and workflows. Download Now
Research Report - Simulation-Driven Design for SOLIDWORKS Users
In this engineering.com research report, we discuss the rising role of simulation and the paradigm shift commonly called the democratization of simulation. In particular, we focus on how SOLIDWORKS users can take advantage of simulation-driven design through two analysis tools: SOLIDWORKS Simulation and 3DEXPERIENCE WORKS. Download Now
White Paper - Industry 4.0 and the Future of Engineering Education
With industries becoming more automated, more tech-driven and more complex, engineers need to keep their skills and knowledge up to date in order to stay on top of this wave—and to be prepared for the Industry 4.0 future. The University of Cincinnati offers two online Master of Engineering degree programs designed specifically for practicing engineers. Download Now
eBook - The Design Gridlock Manifesto
In this eBook, you’ll learn 6 ways old CAD technology slows your company down and hear how design teams have put those problems to rest. “The Design Gridlock Manifesto” shares first-hand modern CAD experiences from 15 companies around the world. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close