| 摘要 |
PURPOSE: A method for forming a cylinder liner for diesel engine by electroplating process is provided which forms the cylinder liner easily, obtains superior physical properties and reduces weight of the cylinder liner by using a Ni-SiC composite material as a plating material and adding a proper amount of SiC powder to an optimum Ni plating bath. CONSTITUTION: The method is characterized in that the cylinder liner for diesel engine is electroplated by applying a voltage to the plating bath after adding 5 to 30 g/L of SiC powder to a Ni plating bath containing 456 g/L of NiSO4·6H2O, 55 g/L of NiCl2·6H2O and 35 g/L of H3BO3, wherein the plating bath has pH of 2.3 to 4.0 and voltage of 2.5 to 4.5 V, wherein size of the SiC is 2 to 3 μm, and wherein the cylinder liner comprises 6 to 16 wt.% of SiC powder in a Ni-SiC plated layer.
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