摘要:
A system and method for coating a substrate (102), the system including integrated powder coating material preparation (130, 140) and deposition (122) of powder coating material onto the substrate (102). The system includes a feed input (130) that processes the powder coating materials for use in a filament extension atomizer (140). The filament extension atomizer (140) stretches fluid filaments of the powder coating material to form droplets (144) of powder coating material. The droplets (144) of powder coating material are partially cooled to prevent agglomeration and to form a powder coating material suitable for electrostatic deposition. The cooled powder coating material is electrostatically charged and directed onto the substrate surface, where it is deposited due to the electrostatic potential between the substrate and cooled droplets. The deposited powder coating material is then cured to the substrate to form a cohesive film of coating material across the substrate.
摘要:
An additive manufacturing system includes an additive manufacturing tool configured to supply a plurality of droplets to a part, a temperature control device configured to control a temperature of the part, and a controller configured to control the composition, formation, and application of each droplet to the plurality of droplets to the part independent from control of the temperature of the part via the temperature control device. The plurality of droplets is configured to build up the part. Each droplet of the plurality of droplets includes at least one metallic anchoring material.
摘要:
The invention relates to a wire gun with a feed device for the wire with a feed roller for the wire driven by a motor and a counter-roller pressing the wire against the feed roller and a device for controlling the wire feed rate. Prior art wire guns of this kind have the drawback that the wire feed rate is not controlled accurately enough and, in flame treatment, does not result in the sufficiently uniform feed of the wire material to be sprayed. The purpose of the invention is to provide a wire gun with precise feed rate control. This purpose is attained in that there is a measuring wheel scanning the wire to measure the effective feed rate and the device for controlling the wire feed rate includes a device for altering the pressure exerted by the counter-roller dependently upon a deviation from the set value which cannot be controlled by the effect of the control device on the motor drive.
摘要:
Pistolet à fil métallique doté d'un dispositif d'avancement du fil comportant une roue d'entraînement (2) du fil, entraînée par un moteur (1), et un contre-rouleau (3) qui pousse le fil contre la roue d'entraînement (2). Pour simplifier l'adaptation du pistolet à fil mécanique au diamètre du fil, les axes de rotation du contre-rouleau et de la roue d'entraînement comportent une zone de réglage. Un élément de logement (4) mobile en fléau de balance, dans lequel s'insère un dispositif de pression (6), est prévu pour le contre-rouleau (3). Le fil peut passer à travers une tête de gaz (7) réglable.
摘要:
Shaping the feed wire for a combustion wire thermal spray process improves the operating capability of the combustion wire gun through higher feed rates and high operating efficiencies. The efficiency of the wire melting is increased over conventional systems through increasing the surface area of the wire cross section and exposing more of the wire material directly to the burner jets.
摘要:
Pistolet à fil métallique doté d'un dispositif d'avancement du fil, comportant une roue d'entraînement du fil entraînée par un moteur et un contre-rouleau qui pousse le fil contre la roue d'entraînement, et d'un dispositif de réglage de la vitesse d'avancement du fil. Le point faible des pistolets à fil métallique classiques est qu'ils ne permettent pas de régler la vitesse d'avancement du fil de manière assez précise pour produire une éjection de fil métallique suffisamment régulière pour la pulvérisation à la flamme. La présente invention propose un pistolet à fil métallique permettant de régler la vitesse d'avancement de manière précise. On a prévu à cet effet une roue de mesure qui mesure sur le fil la valeur effective de la vitesse d'avancement du fil; en outre, le dispositif de réglage de la vitesse d'avancement du fil comporte un dispositif pour modifier la pression de serrage du contre-rouleau en fonction d'une déviation par rapport à la valeur de consigne, qui ne peut être ajustée par l'effet du dispositif de réglage sur la commande par moteur.
摘要:
@ Particulate material, which may be heat softened or liquified, or which may remain solid, is fed outside of an electrical heating zone (2) for electric arc heating under pressure a continuous flow of heated gas (7), or outside of a combustion chamber (114) producing high pressure, high temperature products of combustion, axially into the converging flow of the heated gas or products of combustion while entering a converging portion (121a) of a flow expansion nozzle (41, 120) having a nozzle bore (41, 121) of a length that is at least five times the diameter of the nozzle bore. This restricts the diameter of the column of particles (P) passing through the nozzle bore to prevent build up of particle material on the nozzle bore, if molten or heat softened, while insuring sufficient dwell time within the bore to effect particle heat softening or melting, or if the particles are solid, to prevent abrasion of the nozzle bore wall by the particles while accelerating the particles to supersonic velocity.
摘要:
An additive manufacturing system includes an additive manufacturing tool configured to supply a plurality of droplets to a part, a temperature control device configured to control a temperature of the part, and a controller configured to control the composition, formation, and application of each droplet to the plurality of droplets to the part independent from control of the temperature of the part via the temperature control device. The plurality of droplets is configured to build up the part. Each droplet of the plurality of droplets includes at least one metallic anchoring material.
摘要:
The invention relates to a device for thermally coating a surface, comprising a wire supplying element (4) for supplying a wire (5) acting as a first electrode, a plasma gas source for producing a plasma gas stream, a nozzle body (2) comprising a nozzle opening (3) through which the plasma gas stream is guided as a plasma gas jet to a wire end (8), and a second electrode (7) arranged in the plasma gas stream before said stream enters the nozzle opening (3). The invention is characterised in that the wire supplying device (4) can be adjusted, whereby the wire end (8) arranged in front of the nozzle opening (3) can be moved along a defined adjustment path. In this way, assembly tolerances in the device can be easily compensated and a high and constant quality of the coating is obtained.
摘要:
The invention relates to a wire gun with a feed device for the wire with a feed roller (2) for the wire driven by a d.c. motor (1) and a counter-roller (3) pressing the wire against the feed roller (2). The purpose of the invention is to provide such a wire gun in which, unlike the prior art, it is unnecessary to change or replace gears over the whole wire feed rate adjustment range. This purpose is attained by the invention in that successive drive voltage pulses of variable pulse width and/or frequency may be applied to the d.c. motor (1) to control the feed rate. This measure provides a sufficiently high torque to convey the wire even at very low feed rates, i.e. at low motor rotation speeds.