Coating method

A coating method comprising:

• preparing a semi-manufactured cylinder head comprising:
• a main body portion with a cylinder block mounting surface,
• a combustion chamber upper wall portion provided at the cylinder block mounting surface, and
• a plurality of intake ports and a plurality of exhaust ports, where each intake port and each exhaust port includes an opening portion, and the opening portions are not continuous with one another;
• causing each of the plurality of opening portions and a nozzle of a cold spray apparatus to sequentially face each other while relatively moving the semi-manufactured cylinder head and the nozzle;
• and
• spraying a raw material powder onto annular edge portions of the opening portions facing the nozzle using a cold spray method to form a valve seat coat on each of the plurality of opening portions, wherein:
• in a nozzle movement path from an opening portion having been formed with the valve seat coat to another opening portion to be subsequently formed with the valve seat coat, injection of the raw material powder from the nozzle is continued, and
• the raw material powder is sprayed on the cylinder head between the opening portions of the intake ports and the opening portions of exhaust ports to apply compressive residual stress.