Method for manufacturing cast iron member

A method for manufacturing a cast iron member having a clad layer, comprising:

• a step of forming the clad layer by melting a cladding material by means of irradiation of a laser emitted from a laser irradiation device and by depositing the melted cladding material on a surface of a part of a cast iron material,
• wherein a main ingredient of the cladding material is a copper element,
• wherein the step of forming the clad layer is performed by using the cladding material so that when the clad layer is formed, a hardened layer having a thickness of 0.01 to 2.0 mm is formed on the surface of the cast iron material, and
• wherein the step of forming the clad layer comprises at least:
• a step of forming a first clad layer on the surface of the cast iron material in such a manner that its thickness range would be 0.1 to 1.0 mm;
• and
• a step of forming a second clad layer on the surface of the first clad layer in such a manner that its thickness range would be 1.0 to 19 times the thickness of the first clad layer,
• wherein, as a pretreatment to the step of forming the clad layer, graphite contained in a surface layer of the cast iron material is removed by irradiating the surface of the cast iron material with the laser in such a manner that the surface of the cast iron material does not melt.