Cast iron restoring
04-07-2016, 12:49 PM,
#1
Cast iron restoring
Hey !
So i am planning on restoring cast iron roll surface.

As i understand it is advisable to "bake" cast iron prior spraying for the oils to burn out. What temperature and duration should be enough for this ?

After that i am planing on grit blasting, wire flame spray NiAl, and wire flame spray Metcoloy 2 to thickness of ~4mm. As there is no corrosion i wont be using sealer.
Machining to ~3-3.5mm thickness is next. Maybe you would have any additional suggestions or insights for this kind of job ?
Reply
04-11-2016, 12:54 AM,
#2
RE: Cast iron restoring

Hi.

We find that if we 'thermal degrease' at 400 centigrade
we have good success. As a general rule we allow the usual one hour for each inch of material thickness. The rest of your planned procedure seems OK.

Regards.

Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
Star HVOF WCCo on Chilled Cast Iron(55HRC) tobjung 1 1,169 03-04-2021, 11:16 AM
Last Post: Vadim Verlotski
  Good preparation for cast iron base material plzc126330 3 2,942 11-24-2016, 01:17 AM
Last Post: plzc126330
  Cast iron powder or wire M.Naguib 4 5,073 12-08-2013, 12:14 AM
Last Post: kschewe
  HVOF on CAST IRON ROLL Guna 1 4,966 10-04-2010, 07:37 AM
Last Post: Gordon
  PTA Powder Composition for Cast Iron Stephen Booth 2 4,955 11-30-2009, 12:05 PM
Last Post: drramc
  Fusing of cast iron Arturas 1 6,021 08-16-2006, 01:23 PM
Last Post: Gordon



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd