全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

Experimental characterization of a low-current cutting torch

DOI: 10.1590/S0103-97332004000800003

Full-Text   Cite this paper   Add to My Lib

Abstract:

an experimental characterization of a low-current (30-40 a) cutting torch is presented. to avoid contamination of the plasma arc by removed anode material, a rotating steel cylinder was used as the anode and the arc was anchored onto the cylinder lateral surface. the cathode-anode and cathode-nozzle voltage drops, together with the gas pressure in the plenum chamber were registered for different values of the mass flow rate injected into the plenum chamber. by employing an optical system with a large magnifi cation (? 15 x), the arc radius the nozzle exit was also determined with a digital optical camera. the obtained experimental quantities were used to evaluate several flow properties at the nozzle exit (hot arc plasma and cold gas temperatures, arc and gaz velocities, etc.) by employing a simplifi ed theoretical model for the plasma flow in the nozzle. the obtained results are in reasonable agreement with the data reported in the literature by other authors. explanations of the origin of the clogging effect and the nozzle voltage are also presented.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133