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US 2001/0040090 A1Published application
Plating pretreatment apparatus and plating treatment apparatus
AssigneeSuzuki Motor Corporation
InventorsTetsuya Kuroda, Hidezumi Kato
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AssigneeSuzuki Motor Corporation
InventorsTetsuya Kuroda, Hidezumi Kato
Estimating the term…
There are provided a plating pretreatment apparatus capable of causing a plating pretreatment liquid to flow uniformly between a cathode and an object to be treated, and a plating treatment apparatus, which can also be used for a multi-cylinder engine. In the plating pretreatment apparatus in accordance with the present invention in which a cylindrical cathode 10 is disposed in a fixing jig 3 in which a hollow portion is formed, and a cylindrical object to be treated 17 is installed on the fixing jig 3 so that the cathode 10 is arranged in the object to be treated 17, a lower cathode 40 of the cathode 10 is formed so as to have a smaller diameter than an upper cathode 41. Also, a plurality of hollow portions of the fixing jig 3 and cathodes 10 are provided, and a thermometer 25 is arranged in each cylinder. The plating treatment apparatus in accordance with the present invention includes an outlet jig 103, in which a hollow portion 105 is formed, for installing a cylindrical object to be treated 117 on a top face 108 thereof, a cylindrical anode 110 disposed so that a top end 106 thereof projects from the top face 108 of the outlet jig 103, and a plating liquid tank 115 connected to the anode 110 and the outlet jig 103 through pipes 113 and 112, respectively. When the cylindrical object to be treated 117 is installed on the top face 108 of the outlet jig 103 and an upper anode 131 is arranged in the object to be treated 117, the diameter of a lower anode 130 is made smaller than that of the upper anode 131.
A plating pretreatment apparatus in which a cylindrical cathode is disposed in a fixing jig in which a hollow portion is formed, and a cylindrical object to be treated is installed on said fixing jig so that said cathode is arranged in said object to be treated, wherein a lower cathode of said cathode is formed so as to have a smaller diameter than an upper cathode, whereby the volume of a lower void formed between said lower cathode and said fixing jig is made larger than that of an upper void formed between said upper cathode and said object to be treated.
A plating treatment apparatus in which a plating liquid is sent from a plating liquid tank into an anode, in which a hollow portion into which the plating liquid is sent is formed, in a state in which an electrical current is caused to flow in a cylindrical object to be treated and said anode, is discharged into said object to be treated through a top end of said anode, is caused to flow between the outside surface of said anode and the inside surface of said object to be treated, is further caused to flow between the outside surface of said anode and the inside surface of an outlet jig, and is returned to said plating liquid tank, whereby the inside surface of said object to be treated is plated,
Dependencies are inferred from the claim text.