Posted by Gordon England (62.252.0.5) on 17:32:36 13/11/04
In Reply to:Babbitting posted by Raghav
: Dear Sir,
: Could you help us with the following -
: 1)Can babbitt through arc spray process be sprayed to a bond strength of 80.2 N/mm2 ?
: 2) How much would 80.2 N/mm2 be in MPa or psi ?
:
: 2) According to TAFA Babbit Wire Specifications the coating properties in terms of bond strength will be 2870 psi or 19.8 Mpa, but is 80.2 N/mm2 bond strength achiveable through Arc spray process if so how ?
: 3) If not through arc spray, could you suggest any other process through which the same can be achieved.
:Thanks,
: Regards
: Raghav Bagri
1) Using conventional process NO, this only provides up to about 30 MPa. Using fluxes and fusing techniques higher values could be possible.
2) 80.2 N/mm2 = 80.2 MPa = 11632 PSI
80 MPa would be about the value you would expect for the tensile strength of these alloys in the cast condition. To get bond strengths anywhere near this, I think you would need to prepare your substrate by tinning and cast or fuse your babbit alloy into place.
Regards Gordon
Follow Ups:
Please 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.
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
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
HVAF 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
Photography Gallery2
Photography Gallery3
© Copyright Gordon England