Surface Engineering Forum

  • Alternative Forum Home PageSEF Portal
  • Old S E Message Board ArchivesOld Message Board Archives
  • Search
  • Member List
  • Calendar
  • Help

Current time: 04-21-2018, 06:50 AM Hello There, Guest! (Login — Register)


Surface Engineering Forum / Surface Engineering / Surface Engineering Threads v
« Previous 1 ... 21 22 23 24 25 ... 30 Next »
/ HVOF or Wire Arc




Post Reply 
Threaded Mode | Linear Mode
HVOF or Wire Arc
10-17-2008, 03:13 AM
Post: #1
Noviandy Offline
Newbie
*
Posts: 1
Joined: Oct 2008
Reputation: 0
Question HVOF or Wire Arc
Dear All,

I wish your help. I have a backwash pump which operate in seawater. I would like to repair shaft of the pump. But i have no idea which one is the best solution, HVOF or Wire Arc. For your information, material of the shaft is SUS316. How about result hardness for this case? It shall be same with base material (SUS 316) or harder? Thanks!

Regards,

Andy
Send this user an email Find all posts by this user
Quote this message in a reply
10-22-2008, 05:04 PM
Post: #2
Gordon Offline
Administrator
Posts: 1,786
Joined: Jun 2006
Reputation: 9
RE: HVOF or Wire Arc
Hi Andy

Sign0016 to the Surface Engineering Forum.

Your question is not that easy to answer with the information given. Basically, I assume firstly you need to restore shafts dimensions and finish. How much coating thickness is required? How is it to be finish, turning or grinding?

What coating material or materials? Now it is natural to think rebuild shaft back to its original state say using 316 stainless steel, which could be a good option, but it must be understood that a 316 s/s coating is not the same as a bulk wrought 316 s/s, physical, metallurgical and chemical properties can be very different due to the thermal spray process. Fortunately, thermal spray can be used to apply a vast range of different materials, so this is not a limiting factor. In fact, it may well be possible with good coating selection, to rebuilt the shaft so that it will perform/live better than the original.

Hardness of the coating really should be dictated by what it is running against, rather than the original surface or substrate, which may not have been optimal anyway.

HVOF coatings will generally be technically superior to arc spray, but not necessarily better or the best in your case. Are you limited to HVOF and arc? as other thermal spray processes could also be considered.

As you can probably tell my knowledge of coatings may be good, but my knowledge on backwash pump shafts is not Happy0193 so I hope some of our other members may be able to help with more specific experience.

Regards Gordon

www.gordonengland.co.uk
www.surfaceengineer.co.uk
Photography Obsession
Send this user an email Visit this user's website Find all posts by this user
Quote this message in a reply
11-12-2008, 05:37 AM
Post: #3
Intel55 Offline
SuperMember
******
Posts: 156
Joined: Sep 2007
Reputation: 2
RE: HVOF or Wire Arc
I vote for twin wire arc Smile cheaper and good.
Send this user an email Find all posts by this user
Quote this message in a reply
« Next Oldest | Next Newest »
Post Reply 




Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  MO wire spray parameter for 3GF kim jong hun 1 103 04-13-2018
01:41 PM
Last Post: plasmajet1990
  Mo wire spraying Arturas 6 666 09-15-2017
01:29 PM
Last Post: Arturas
  Coating on Boiler tube in Coal Fired Power Plan by using Tafa wire 97MXC Iwan Sedaryawan CA 4 1,969 04-21-2017
03:17 PM
Last Post: J!m
  difference between wire fed and powder thermal sprayers. wildlife360 4 1,252 04-13-2017
05:22 PM
Last Post: loriolo
  HVOF 88 WC-12Co Cracking problem on wire drawing capstan Hector Monjardin 7 2,268 10-19-2016
11:55 PM
Last Post: Hector Monjardin
  Wire drawing cracking problem Hector Monjardin 3 1,665 06-23-2016
05:37 PM
Last Post: Hector Monjardin
  Is it possible to spray powder established for gas based HVOF in Fluid HVOF system?? sreenuvundela 0 1,152 04-18-2016
07:52 AM
Last Post: sreenuvundela
  Arc wire Bond wtaz 1 1,511 06-29-2015
09:47 PM
Last Post: loriolo
  Mix wire feeding with ArcSpray Met.Eng. 4 2,398 04-28-2015
11:12 PM
Last Post: Met.Eng.
  Wire Flame spray and Twin Arc spraying wtaz 1 1,700 03-30-2015
09:41 PM
Last Post: loriolo
  Query - SS Wire coating RV_DMG 3 2,463 02-13-2015
06:14 AM
Last Post: RV_DMG
  BONDING WIRE wtaz 3 2,335 01-18-2015
12:09 PM
Last Post: loriolo
  Arc Wire Spraying Bond Strength wtaz 4 3,011 12-04-2014
12:02 AM
Last Post: wtaz
  Hardness with Arc Spray Wire Edson 4 2,693 11-21-2014
11:56 PM
Last Post: loriolo
  MIG WIRE FOR TWIN WIRE ARC SPRAYING wellish 1 2,382 11-14-2014
07:39 PM
Last Post: Met.Eng.

  • View a Printable Version
  • Send this Thread to a Friend
  • Subscribe to this thread


User(s) browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd

    Subscribe in a reader

    Contact Us | Thermal Spray Coatings | Return to Top | Return to Content | Lite (Archive) Mode | RSS Syndication

Powered By MyBB, © 2002-2018 MyBB Group.


© Copyright Gordon England