Kundenlogin 0 Einkaufswagen
Home Bücher eBücher Zeitschriften Referenzen und Berichte Autoren, Herausgeber, Rezensenten A – Z Produktindex
Progress in Plasma Processing of Materials, 2003

ISBN Druckformat: 978-1-56700-192-1

ISBN Online: 978-1-56700-447-2

ON LINE CONTROL OF A FLAME SPRAY PROCESS

Abstrakt

Flame sprayed coatings present very often reproducibility problems due to spray parameter variations. In fact the quality of coatings is strongly linked to the temperature and velocity of particles at impact and on the substrate, and coating temperature evolution before (preheating), during (spraying) and after (cooling).
The particle temperature and velocity measurements require sophisticated devices rather expensive and not well adapted to work in the harsh environment of spray booths. Moreover with flames the particle surface temperature is generally below 2200K which make the measurements more tricky than under plasma conditions. That is why, a new system, the Spray and Deposit Control (SDC) has been developed which allows to follow continuously both the light emitted by hot particles (maximum intensity, mean trajectory and trajectory dispersion) and the substrate and coating temperature evolution during spraying. This light system (800gr), fixed on the torch has been tested for flame spraying of NiAl. This paper presents the evolutions of SDC parameters with process and coating parameters, a strategy for an on-line control, and a zone of "correct values" and acceptable variations for the process inputs.
Home Begell Digitales Portal Begell Digitale Bibliothek Zeitschriften Bücher eBücher Referenzen und Berichte Autoren, Herausgeber, Rezensenten A – Z Produktindex Preise und Aborichtlinien Über Begell House Kontakt Language English 中文 Русский 日本語 Português Deutsch Français Español