Surface treatment method by gas jetting and surface...

Details Surface treatment method by gas jetting and surface... Surface treatment method by gas jetting and surface...

Category

B - Operations, Transporting

Subcategory

01

Subsubcategory

J

IPC codes

B01J 19/08 (2006.01) C23C 16/27 (2006.01) C23C 16/513 (2006.01) H05H 1/54 (2006.01)

Type

Patent

Patent number

CA 2192349

Description

An object of the present invention is to improve the quality of surface treatment and to enhance the work efficiency . The gas ( 6 ) to be sprayed onto the surface of a treatment object ( 15 ) is heated and made into a plasma by a heating means ( 5 ) and thus enters a highly reactive state (excited state, activated state). The gas that has been heated and made into a plasma is then subjected to adiabatic expansion by a rubber nozzle ( 1 ), which results in a flow rate faster than the speed of sound. This gas (7) that has been given the flow rate faster than the speed of sound is then sprayed toward the surface of the treatment object (15). Thereupon, the gas (7) that has been heated and made into a plasma and has entered a highly reactive state reaches the treatment object (15), which is the spraying object, at ultrasonic speed in a short time.

L'invention tend à améliorer une qualité de traitement de surface ainsi qu'une efficacité de fonctionnement. Un gaz (6), projeté contre une surface d'un objet (15) en cours de traitement, est chauffé et transformé en plasma à l'aide de moyens (5) de chauffage afin d'être mis dans un état fortement réactif (état excité, état actif). Ensuite, on fait subir au gaz chauffé et transformé en plasma une détente adiabatique à l'aide d'une tuyère (1) en caoutchouc afin que ce gaz acquière une vitesse supérieure à celle du son. Le gaz (7) est projeté à une vitesse supérieure à celle du son contre une surface de l'objet (15) en cours de traitement. Ainsi, ce gaz (7) qui a été chauffé et transformé en plasma aux fins d'être mis dans un état fortement réactif, atteint l'objet (15) en cours de traitement, lequel est un objet destiné à recevoir un jet de gaz, à une vitesse supersonique pendant une courte période de temps.

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