Study of Treatment for Fume in Welding Hermetically Sealed Chamber Workplace
Zhang Xiuzhen;Wang Huanjun;Chen Xiaoling Research Institute of Industrial Hygiene of Railway Ministry 100038
The concentration for welding fume in the workplace for producing hermetically sealed chamberalmost exceeded from the National Hygienic Standards. especially in the chambers which was moreserlous. This paper introduced two ventilated dust wiping systems in the workplace. one was set on aeries of suction mouths on the floorconnected with soft pipes for wiped fume off the chamber, andthe other was a series of suction mouths on the upside of the workplace for general ventilation. Theformer is majority and the latter is auxiliary. The physiochemical characters and fume extraction modes. the design of electric dust wiper forxamp'e were also discussed.