Sliding component and method for producing the same
A sliding component and its producing method are provided. The sliding component includes a base section made of steel or cast iron, and a sliding section having a sliding surface, made of copper alloy including hard particles, and joined to the base section. The hard particles in the sliding section are arranged such that those in a region including an outer periphery of the interface with the base section have their longitudinal directions coinciding with the directions along the outer periphery as compared to those in an inner peripheral side. This improves the durability of the sliding section in its region including the outer periphery of the interface with the base section.
1. A method for producing a sliding component, comprising the steps of:
preparing a base member made of steel or cast iron and having a recessed portion formed therein, and a sliding member made of copper alloy including hard particles; and
joining the base member and the sliding member,
the step of joining the base member and the sliding member including steps of
increasing temperatures of the base member and the sliding member by relatively rotating the sliding member with respect to the base member while relatively pressing the sliding member against the base member with at least a part of the sliding member being received in the recessed portion, and
stopping the relative rotation of the sliding member with respect to the base member and cooling the base member and the sliding member with the members being pressed against each other.
2. The method for producing a sliding component according to claim 1 , wherein
the base member includes
a recessed portion bottom surface defining the recessed portion, and
a recessed portion side surface defining the recessed portion and extending in a direction intersecting the recessed portion bottom surface, and
in the step of increasing the temperatures of the base member and the sliding member, the sliding member is relatively rotated while being relatively pressed against the recessed portion bottom surface of the base member.
3. The method for producing a sliding component according to claim 2 , wherein in the step of increasing the temperatures of the base member and the sliding member, the sliding member is deformed to contact the recessed portion side surface.
4. The method for producing a sliding component according to claim 2 , further comprising the step of, in a state where the base member and the sliding member are joined, machining the base member to remove the recessed portion side surface.
5. The method for producing a sliding component according to claim 1 , wherein in the step of increasing the temperatures of the base member and the sliding member, the sliding member is rotated while the base member is fixed.
6. The method for producing a sliding component according to claim 1 further comprising the step of, in a state where the base member and the sliding member are joined, removing a flash formed due to deformation of the sliding member in the step of increasing the temperatures of the base member and the sliding member.