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在氩弧焊接和等离子弧焊接过程中,产生的有害物质有:有害气体、弧光辐射、金属粉尘及金属氧化物、高频电磁场、放射性钍等。为防止这些有害物质对人体产生的不良影响,可采取焊接密闭化、设置通风装置和防护面罩和头盔等防护措施。焊接密閉化在焊接过程中,将光辐射、大量的有害气体和金属氧化物及粉尘等控制在一定的空间内,使之避免扩散污染作业地带。为使密闭罩内的有害物及时排出,要求在罩体的上方或侧
In argon arc welding and plasma arc welding process, the harmful substances are: harmful gases, arc radiation, metal dust and metal oxides, high-frequency electromagnetic fields, radioactive thorium and so on. In order to prevent these harmful substances on the human body have a negative impact, can be sealed welding, ventilation devices and protective masks and helmets and other protective measures. Welding Sealing In the welding process, the light radiation, a large number of harmful gases and metal oxides and dust control in a certain space, so as to avoid the proliferation of pollution operation zone. In order to timely discharge of harmful substances within the sealed enclosure, the top or side of the enclosure is required