Method of making a swash plate type compressor piston whose head portion is formed by pore-free die-casting

A method of producing a piston for a swash plate type compressor including a head portion which is slidably fitted in a cylinder bore of the compressor, and an engaging portion which engages a swash plate of the compressor, said method comprising the steps of:

• forming a blank by a pore-free die-casting method, said blank including a hollow cylindrical head section which corresponds to said head portion and which has a closed end and an open end, and an engaging section which corresponds to said engaging portion and which is formed integrally with said hollow cylindrical head section at said closed end;
• and
• fixing a closing member to said hollow cylindrical head section of said blank so as to close said open end, for thereby providing said head portion of the piston.