| 摘要 |
PURPOSE:To prevent the lowering of plating operation efficiency made the working impossible due to plating of the moving part of pump for plating liquid circulation, by carrying out the circulation of the plating liquid by expansion and contraction of bellows at the time of plating on the inner face tube material by circulating the chemical plating liquid. CONSTITUTION:The tube material to be plated the inner face 4 is connected with the pump room 10 and the plating both 1 by the piping 3. The chemical plating liquid 2 is put in the both 1 and the bellows 7 expanding and contracting by driving the motor 11, is provided in the room 10 and the vomiting valve 8 and the suction valve 9, are attached. Linear motion is given to the crank 12 by the rotation of the motor 11 and the liquid 2 is sucked in the room 10 by expanding and contracting action and next, the inner face is chemically plated by passing the liquid 2 through the inner part of the material 4 and then, the liquid 2 is returned to the both 1 again and is circulated. Inner part of the bellows 7 is chemically plated also, but, working time of the pump is longer than the usual pump and also, number of decomposition washing is able to decrease and moveover, lowering of working ratio of plating operation is prevented. |
