| 摘要 |
PURPOSE: A surface treatment apparatus for a piston is provided to prevent a surface treatment solution from scattering from a surface treatment unit by generating vacuum pressure in a surface treatment space of the surface treatment unit using a vacuum pump. CONSTITUTION: A surface treatment apparatus(900) for a piston comprises a supply line(100), a surface treatment unit(200), a discharge line(300), and a vacuum pump(400). A surface treatment solution is supplied to the surface treatment unit through the supply line. The surface treatment unit has an airtight surface treatment space. The supplied surface treatment solution flows into the surface treatment space, and the surface of a piston is treated. The discharge line is connected to the surface treatment space and discharges the surface treatment solution from the surface treatment unit. The vacuum pump forcefully inhales the surface treatment solution from the surface treatment space to generate vacuum pressure when the surface of the piston is treated and prevents the surface treatment solution from scattering from the surface treatment space. |
