{
  "$type": "site.standard.document",
  "description": "An integrally cast steel piston for internal engines formed by pouring a cast steel into a sand mold having a cavity having a shape of said integrally cast steel pistons, wherein said cast steel has a microstructure containing eutectic carbides forming eutectic colonies which are assemblies of…",
  "path": "/patents/1015047",
  "publishedAt": "2011-03-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B22C9/22",
    "HITACHI METALS LTD [JP]"
  ],
  "textContent": "An integrally cast steel piston for internal engines formed by pouring a cast steel into a sand mold having a cavity having a shape of said integrally cast steel pistons, wherein said cast steel has a microstructure containing eutectic carbides forming eutectic colonies which are assemblies of eutectic carbides and a matrix phase.",
  "title": "Internal engine piston and its production method"
}