| Titre : |
Thermal spray-an innovative tool |
| Type de document : |
texte imprimé |
| Auteurs : |
Nitisha Mangesh Sidam, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 55-72 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Dépôt par pulvérisation
Pulvérisation thermique
Système de pulvérisation (technologie)
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Thermal Spray - is a generic term fora group of processes in which metallic, ceramic, cermet, and some polymeric materials in the form of powder, wire, or rod are fed to a torch or gun with which they are heated to near or somewhat above their melting point. The resulting molten or nearly molten droplets of material are accelerated in a gas strem and projected against the surface to be coated (i.e. the substrate). On impact, the droplets flow into thin lamellar particles adhering to the surface, overlapping and interlocking as they sol idify. The total coating th ickness is usually generated in multiple passes of the coating device.
A major advantage of the thermal spray processes is the extremely wide variety of materials that can be used to make a coating, to apply a coating to a substrate without significantly heating it and also its abi I ity in most cases, to strip and recoat worn or damaged coatings without changing the properties or dimensions of the part. |
| Note de contenu : |
- Surface properties
- Coating processes
- Definition
- Substrate materials
- Coating material
- CONVENTIONAL FLAME SPRAY PROCESSES : Wire flame spray - Powder flame spray - Electric arc wire spray - Plasma spray - High velocity oxy-fuel spray (HVOF)
- PROCESS COMPARISON
- INFRASTRUCTURE (SYSTEM REQUIREMENTS)
- COATING CHARACTERISTICS : Wear protection - Corrosion protection - Insulative conatings (thermal/electrical)
- POST PROCESSING : Mechanical post processing - Sealing - Post-coat heat treatment
- COATING CHARACTERIZATION
- APPLICATIONS
- PRODUCTION APPLICATIONS : Hard chromium alternative - Medical implants - Gas turbines - Printing industry - General industrial uses - Automotive industry - Aerospace - Salvage and restoration
- Fig. 1a : Chrome plated, 13/4 steel pelton turbine nozzle needle after service
- Fig. 1b : Nozzle needle with a chrome oxide coating to prevent wear
- Fig. 2 : Principle of thermal spraying
- Fig. 3 : Schematic diagram of a thermal sprayed coating
- Fig. 4a : Schematic diagram of the wire flame spray process
- Fig. 4b : Schematic diagram of the powder flame spray process
- Fig. 5 : Schematic diagram of the electric are wire spray process
- Fig. 6a : Schematic diagram of the plasma spray process
- Fig. 6b : Controlled atmosphere plasma spraying
- Fig. 7 : Schematic diagram of the high velocity oxy-fuel spray process (HVOF)
- Fig. 8 : Energy comparison of the spray processes
- Fig. 9 : Typical coating facility
- Fig. 10 : Arc wire spray coating of X40 steel
- Fig. 11 : HVOF spray coating of WC 12 (CoCr)
- Fig. 11 : A diagram depicting the manufacturing processes used to create rigid polyurethane foam insulation
- Fig. 12 : Self-fluxing coating
- Fig. 13 : Favorable coating geometries for coating
- Fig. 14 : Noses gear of an F5 Tiger with a WC/CoCr coating
- Fig. 16 : Various textile machinery components
- Fig. 17 : Coated gas turbine vanes
- Fig. 18 : Anilox printing roll with a laser engraved coating
- Fig. 19 : Bearing shaft with a babbitt coating
- Fig. 20 : Coated household steam iron soleplate
- Fig. 21 : Dual-RotaPlasma
- Fig. 22 : HVOF coating of a sink roll
- Fig. 23 : Coating after superfinishing
- Fig. 24 : Combustion chamber
- Fig. 25 : Repair procedure
- Fig. 26 : A modern LPPS high-volume production system for coating gas turbine blades
- Table 1a : Principal coating processed and characteristics
- Table 1b : Coating process comparison
- Table 2 : Common classes of thermal spray powder materials |
| En ligne : |
https://drive.google.com/file/d/1nc1cUxqPY8LYnKkinctExmSc9kCOofUu/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32620 |
in PAINTINDIA > Vol. LXIX, N° 3 (03/2019) . - p. 55-72
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Thermal spray-an innovative tool in PAINTINDIA, Vol. LXIX, N° 3 (03/2019)
