coating Fluidized Bed Combustion Boiler tubes
08-22-2012, 04:13 AM,
#1
coating Fluidized Bed Combustion Boiler tubes
Dear all,
Does anyone has any experiences for coating Fluidized Bed Combustion Boiler tubes ? some used 13% chrome and 17% chrome, or Tungsten Wire like Tafa 97-MXC arc spray wires, or any others alloys that suitable against Abrasion and Corrosion ??
Thanks & Regards,
Iwan Sedaryawan - Website : https://www.ciptaagung.com
Happy0193
Reply
08-23-2012, 03:04 AM,
#2
RE: coating Fluidized Bed Combustion Boiler tubes
Hi ,
we do coating on fluidized bed combustion boiler tubes with HVOF Chrome carbide Nickel Chrome (75/25) agglomerated and sintered. Coating thcikness 200-225 microns.
regards



(08-22-2012, 04:13 AM)iwan-sedaryawan Wrote: Dear all,
Does anyone has any experiences for coating Fluidized Bed Combustion Boiler tubes ? some used 13% chrome and 17% chrome, or Tungsten Wire like Tafa 97-MXC arc spray wires, or any others alloys that suitable against Abrasion and Corrosion ??

Reply
08-23-2012, 05:18 AM,
#3
RE: coating Fluidized Bed Combustion Boiler tubes
Hello,
never used Arc-Spray ? or Flame Spray so far ? if anyone has tried one of both processes ?
Thanks & Regards,
Iwan Sedaryawan - Website : https://www.ciptaagung.com
Happy0193
Reply
08-23-2012, 10:53 PM,
#4
RE: coating Fluidized Bed Combustion Boiler tubes
I know of people that use 95 MXC equivalent on boiler tubes that is successful

Reply
08-23-2012, 11:54 PM,
#5
RE: coating Fluidized Bed Combustion Boiler tubes
Dear KevGarty,
In our region the application 95MXC failed...so they changed to 97MXC...
Thanks & Regards,
Iwan Sedaryawan - Website : https://www.ciptaagung.com
Happy0193
Reply
08-28-2012, 07:14 PM,
#6
RE: coating Fluidized Bed Combustion Boiler tubes
(08-23-2012, 11:54 PM)iwan-sedaryawan Wrote: Dear KevGarty,
In our region the application 95MXC failed...so they changed to 97MXC...

Dear iwan,

Arc or flame spray coatings have much higher porosity and lower Bond strength which is why HVOF coatings of Cr3CrNiCr is preferred over these for abrasion and high temperature oxidation resistance In boiler tubes as the abrasion caused due to burning of coal is very high.

ARC spray using 50/50 NiCr wire is very suitable for waste heat recover boilers where the problem lies only in the high temperature oxidation and sulphate deposition but no abrasion as there is no coal to burn;

Regards

Shantanu

Reply
08-29-2012, 12:42 AM,
#7
RE: coating Fluidized Bed Combustion Boiler tubes
Dear Shantanu,
yes right HVOF lower porosity than arc or flame spray, have you ever used it by manual ? since I did not have any experiences with manual / automatic HVOF process...
Thanks & Regards,
Iwan Sedaryawan - Website : https://www.ciptaagung.com
Happy0193
Reply
09-05-2012, 01:15 PM,
#8
RE: coating Fluidized Bed Combustion Boiler tubes
Dear All,
I still wonder How hand Held HVOF coatings perform. I think that the Velocity of Hand Held gun should be very low compared to JP 5000 or Diamond Jet.
Regards.
Vijay
Reply
09-10-2012, 10:27 AM,
#9
RE: coating Fluidized Bed Combustion Boiler tubes
We (MECPL, India) have done many boiler tube coating job works with our Hipojet (HVOF - Hand held gun) equipment and in the successive year coating thickness evaluation was performed and there was no sign of failure at all after one year.

I am attaching photographs of tubes after one year of coating done by HVOF, these pictures clearly intimate quality of work achieved with hvof hand held equipment.
   
   
   
Reply
09-18-2017, 05:01 AM,
#10
RE: coating Fluidized Bed Combustion Boiler tubes
https://firesidecoatings.com/ Fireside coatings are spray on ceramic coatings, that can be applied much faster, over a larger surface area to protect against high temperature scaling, and erosion, corrosion. It works well as as top layer over arc or hvof coatings, as well as on its own.

Coatings are suitable for gas fired or coal fired boilers.
Stephen James Booth
www.ipsteknokraft.com
www.teknokraft.com
Indonesia WhatsApp +6281905603262

Reply




Possibly Related Threads…
Thread Author Replies Views Last Post
  Spray & Fuse coating for Boiler tubes Jaydev 8 7,855 05-10-2020, 08:14 PM
Last Post: SENTESBIR-POWDERS
  Boiler tube failure Flo24 8 13,641 06-22-2019, 01:19 PM
Last Post: velocity
  Want consumables for Metco 16E combustion wire system. Turbo Machinery 0 707 06-07-2019, 12:11 PM
Last Post: Turbo Machinery
  BOILER TUBE COATING ehasan 4 15,250 11-14-2017, 03:24 AM
Last Post: Stephen Booth
  Coating on Boiler tube in Coal Fired Power Plan by using Tafa wire 97MXC Iwan Sedaryawan CA 4 3,899 04-21-2017, 03:17 PM
Last Post: J!m
  How to spray combustion chamber liner Michaellearnstocoat 5 4,283 09-06-2014, 09:24 AM
Last Post: Stephen Booth
  Parameters of Combustion wire gun Turbo Machinery 3 4,337 05-25-2014, 06:07 AM
Last Post: Stephen Booth
  Reduce unmelted particles in Combustion Wire Spray Alberto Villalobos 8 5,824 05-19-2014, 07:21 PM
Last Post: KevinS
  JP5000 combustion tube KevGarty 5 4,883 11-01-2013, 09:19 PM
Last Post: kschewe
  Coating of coal Boiler tube wall iwan-sedaryawan 6 7,492 05-10-2011, 07:16 AM
Last Post: A.Termika Ltd
  Refuse Incineration (Waste to energy) Boiler Coatings MichiganMan 4 6,723 09-26-2010, 05:48 AM
Last Post: Stephen Booth
  Erosion-corrosion issues in boiler applications sivakumar 1 5,169 05-04-2010, 08:40 PM
Last Post: MichiganMan
  Which powder should I use with my combustion flame spray gun? jamaicanarchie 3 4,626 06-06-2009, 06:05 PM
Last Post: Gordon
  Bonding for Combustion/Flame Wire Spraying iwan-sedaryawan 3 5,937 02-10-2009, 04:59 PM
Last Post: iwan-sedaryawan
Rolleyes Boiler Tube Puncture amitpagare 2 6,579 04-27-2008, 06:40 AM
Last Post: drramc



Users browsing this thread: 1 Guest(s)





Surface Engineering Forum Sponsor - Alphatek Hyperformance Coatings Ltd