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KMID : 0895420000100020098
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Journal of Korean Society of Occupational and Enviromental Hygiene
2000 Volume.10 No. 2 p.98 ~ p.108
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Development of a jet air supplying welding mask for controlling weldirig fumes
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김종철/Kim, Jong Chul
정유진/김태형/하현철/송세욱/김종길/Jung, Yu Jin/Kim, Tae Hyeung/Ha, Hyun Chul/Song, Se Wook/Kim, Jong Gil
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Abstract
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Controlling the over-exposure of welding fumes is not an easy problem because neither general nor local exhaust ventilation systems could be successfully applied. A jet air supplying welding mask was development to reduce the exposure level of welding fumes. The jet airstream pushes the welding fumes away from the breathing zone by using the frictional characteristic of jet. Laboratory experiments were conducted to optimize the efficiency of controlling welding fumes. Thereafter, its performance was tested in a laboratory and an industrial field. The efficiencies of reducing the welding fume exposure were about 90% and 80% in a laboratory and an industrial field, respectively. Additionally, it resulted in elimination of heat inside the mask and enhancement of clear visuality.
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