ガス被包アーク溶接用送給ガスの乾燥器について

概要

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It is necessary to use a supplied gas having humidity as low as possible for gas-shielded metal arc welding. But it is not always easy to get everywhere the recommended gas for welding, i.e. super-pure and super-dried gas charged into a specially treated cylinder. The authors carried out experiments about drying of gas supplied from a cylinder with some desiccants : sodium alumino silicate, activated alumina and silica gel. The dew point of the gas flowing out through a desiccator was continuously measured until the given amount of a desiccant broke. Carbon dioxide was used for the supplied gas. The results are as follows : 1) Sodum alumino silicate has a drying capacity larger than activated alumina and silica gel. The sodium alumino silicate of 640g warrants a supply of CO_2 gas under -25℃ dew point for 112 hrs., i.e. 7 cylinders. The dew point of gas through the desiccant is under -40℃ from the first cylinder to fifth. 2) Activated alumina and silica gel warrant a supply of only two cylinders of CO_2 gas under -20℃ dew point through each desiccant. 3) An experimental formula was established for the relation between charged weight of sodium alumino silicate and break-time.
社団法人溶接学会の論文
1962-01-25