{
  "$type": "site.standard.document",
  "description": "To provide a price-competitive compression ring having excellent thermal conductivity and thermal sag resistance, which can be used in a high-thermal-load environment of high-compression-ratio engines, steel identified by the material number of SUP 10 in JIS G 4801, which contains small amounts of…",
  "path": "/patents/992086",
  "publishedAt": "2013-04-10T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C21D9/40",
    "RIKEN KK [JP]"
  ],
  "textContent": "To provide a price-competitive compression ring having excellent thermal conductivity and thermal sag resistance, which can be used in a high-thermal-load environment of high-compression-ratio engines, steel identified by the material number of SUP 10 in JIS G 4801, which contains small amounts of alloying elements, is used, and a piston ring wire is annealed before an oil-tempering treatment such that spheroidal cementite having an average particle size of 0.1-1.5 µm is dispersed in a tempered martensite matrix, thereby suppressing the movement of dislocation and creep even at 300°C, and improving thermal sag resistance.",
  "title": "PRESSURE RING AND METHOD FOR PRODUCING THE SAME"
}