Carbon monoxide and nitrogen oxides are found to be the main gaseous components of a welding aerosol in mechanized CO{sub}2 welding performed in Ar + CO{sub}2 and Ar + CO{sub}2 +O mixtures. Decrease in the oxidizing capacity of a shielding gas leads to a decrease in the intensity of evolution of carbon monoxide and increase in nitrogen oxides. Addition of oxygen to the shielding gas mixture causes a decrease in evolution of carbon monoxide due to its oxidation and an increase in the intensity of formation of nitrogen oxides. Explanations are given to the mechanisms of formation of gaseous components of a welding aerosol and dependencies of the intensity of their evolution upon the welding conditions.
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机译：一氧化碳和氮氧化物是在Ar + CO {sub} 2和Ar + CO {sub} 2 + O混合物中进行的机械化CO {sub} 2焊接中焊接气溶胶的主要气体成分。保护气体的氧化能力的降低导致一氧化碳放出强度的降低和氮氧化物的增加。向保护气体混合物中添加氧气会导致一氧化碳由于其氧化而减少放出，并增加了氮氧化物的形成强度。解释了气溶胶的气态成分的形成机理及其演变强度与焊接条件的关系。
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