Arc Spray Process
In the Arc Spray Process a pair of electrically
conductive wires are melted by means of an electric arc. The molten
material is atomised by compressed air and propelled towards the
substrate surface. The impacting molten particles on the substrate
rapidly solidify to form a coating. This arc spray process carried out
correctly is called a "cold process" (relative to the substrate
material being coated) as the substrate temperature can be kept low
during processing avoiding damage, metallurgical changes and distortion
to the substrate material.
Electric arc spray coatings are normally denser and stronger than
their equivalent combustion spray coatings. Low running costs, high
spray rates and efficiency make it a good tool for spraying large areas
and high production rates.
Disadvantages of the electric arc spray process are that only
electrically conductive wires can be sprayed and if substrate
preheating is required, a separate heating source is needed.
The main applications of the arc spray process are anti-corrosion
coatings of zinc and aluminium and machine element work on large
components.
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 Gallery
Photography Gallery3
© Copyright Gordon England