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Abstract: Plasma jet quality affects directly on the melting and
flight state of powders during plasma rapid sprayed forming, which also
would affect the quality of sprayed forming, therefore diagnosis against
plasma jet quality is one of the important tasks in the world. Combining
with CCD data collection devices and image processing technology,
real-time collection and processing of plasma jet with high temperature,
high speed and focus energy, has been realized during spraying. The
collecting principle and collecting methods in the field of high
temperature are specially investigated, as well as the experimental
system of real-time collection by using CCD cameras is developed. At the
same time, fake color image processing is presented to analyze the law
of temperature field distribution. The results are important to realize
the visualization during spraying, and to study further on on-line
feedback control of forming quality.
Key words: Plasma jet Collection of temperature field Image
processing
CLC No: TG66
国家自然科学基金(50175035,59805002)和福建省青年人才创新基金(2001J011)资助项目. Received 20020830,
received in revised form 20021010
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