Gordon England Surface Engineering Forum



Problem spraying Metco 45 Re: Cluster oxide in Inco718

Posted by Hong Wang (207.54.105.185) on 21:10:40 06/01/06

In Reply to: Re: Cluster oxide in Inco718 posted by Alex Chan

I had the same problem when I was spraying Metco 45 chemical is same as yours. We used 9MB Ar/H2 gas. the Oxide cluster is identical to Gordon posted pictures. Alex and Ben, did you use the front cooling jets? Maybe reduce the pressure of the front jet will make it better. If the turbulent theory correct, (a speicalist from PW told me the same thing and I do agree with it)why increasing dwell time work? If reduce velocity, You get higher porosity which is impt to this coat. You got the optimize it. I am also very interested to learn it if someone make it work.
Gordon, to your experience, does it happen to all hard-to-melt coating?
Thanks, Hong


Follow Ups:
Surface Engineering Forum

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Search Message Boards Archives

www.gordonengland.co.uk





GoogleCustom Search

Post A Message!

Gordon England Surface Engineering ForumPlease go to the new Surface Engineering Forum as this old message board is a read only archive. Please copy and paste relevant information or link to the page if you wish to reactivate a thread on the new forum.







Gordon England Independent Thermal Spray Coating Consultant
Telephone: +44 (0)1252 405186

PLEASE CLICK HERE TO EMAIL

Site Links

Introducing

Nature of Thermal Spray Coatings

Surface Engineering in a Nutshell

Surface Engineering Forum

Thermal Spray Gun Repair Service

Plasma Consumable Parts

Thermal Spray Powder Supplies

Applications:

Thermal Spray Coatings on Carbon and Glass Fibre Reinforced Polymers

HVOF Coating of Paper Making Roll

Abradable Coatings

Photomicrographs

Thermal Spray Processes:

Combustion Wire Thermal Spray Process

Combustion Powder Thermal Spray Process

Arc Wire Thermal Spray Process

Plasma Thermal Spray Process

HVOF Thermal Spray Process

Detonation Thermal Spray Process

Plasma Flame Theory

Cold Spray Coating Process



Wear and Use of Thermal Spray Coatings

Corrosion and Use of Thermal Spray Coatings

Glossary of Thermal Spray and Surface Engineering Terms

Image Directory for Thermal Spray Coatings

Plasma Gas Flow Information

Plasma Gas Flow Correction Calculator

Contact Form

Links to other interesting sites related to thermal spray and surface engineering

Reciprocal Links

Periodic Table of the Elements

SI Units

Calculators for Conversion between Units of Measurement

Hardness Testing

Surface Engineering Message Board Archive

Surface Engineering Message Board Archive Index

Search This Site


Photography Gallery2

Photography Gallery3


© Copyright Gordon England