| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface treatment device which is capable of forming the uniform flow of a treating liquid and the uniform flow of air bubbles near materials to be treated (the works) immersed in the surface treatment device. SOLUTION: Treating liquid introducing means 11 and air bubble generating means 1 are respectively installed to the sections lower than the work installation regions in a treating vessel of the surface treatment device which subjects the surfaces of the works 11 to a surface treatment, such as washing or plating, by immersing the works into the treating liquid 8 supplied into the treating vessel 7. The surface treatment device has a piping structure combined with H-shaped branch piping together with the treating liquid introducing means and the air bubble generating means. Each of the H-shaped branch piping is constituted by successively branching the piping at a 1/2 piping length. The treating liquid or air bubbles are introduced into the treating vessel 7 from four corners of the H-shaped branch piping existing at their terminals.
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