Cylinder liner and method for manufacturing the same
AssigneeTeikoku Piston Ring Co., Ltd.
InventorsKeiichi Urano, Kazunori Mizutani, Nobuyuki Yamashita
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Abstract
A cylinder liner comprises an alloy plating film of Ni-B or Ni-P or Ni-Co-P formed on at least a part contacting with cooling liquid in an outer peripheral surface and further a nitrided layer formed on an inner peripheral surface to improve an anti-cavitation characteristic, a sliding characteristic and an anti-corrosion characteristic and facilitate a manufacturing of the cylinder liner.
Claims3
A cylinder liner comprising a nickel alloy plating film formed on at least a part of the liner having contact with cooling liquid on an outer peripheral surface, a nitrided layer formed on an inner peripheral surface, and said nickel alloy being an alloy selected from the group consisting of Ni-B alloy, Ni-P alloy, and Ni-Co-P alloy.
A method for manufacturing a cylinder liner comprising the steps of:
- forming a nickel alloy plating film on at least a part of the liner having contact with cooling liquid in an outer peripheral surface, said nickel alloy being an alloy selected from the group consisting of Ni-B alloy, Ni-P alloy, and Ni-Co-P alloy;
- and
- forming a nitrided layer on an inner peripheral surface after said alloy plating step.
Dependencies are inferred from the claim text.