{
  "$type": "site.standard.document",
  "description": "A railway wheel in which formation of pro-eutectoid cementite is suppressed is stably produced. After heating an intermediate product containing, in mass %, C: 0.80 to 1.15% to a temperature not less than Atransformation point, the intermediate product is cooled such that the cooling rate (°…",
  "path": "/patents/1258358",
  "publishedAt": "2020-04-02T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "C21D9/34",
    "NIPPON STEEL CORPORATION"
  ],
  "textContent": "A railway wheel in which formation of pro-eutectoid cementite is suppressed is stably produced. After heating an intermediate product containing, in mass %, C: 0.80 to 1.15% to a temperature not less than Atransformation point, the intermediate product is cooled such that the cooling rate (° C./sec) in a range from 800 to 500° C. satisfies the following conditions: 1=−5.0+exp(5.651−1.427×C−1.280×Si−0.7723×Mn−1.815×Cr−1.519×Al−7.798×V) (1) 2=0.515+exp(−24.816+24.121×C+1.210×Si+0.529×Mn+2.458×Cr−15.116×Al−5.116×V) (2)",
  "title": "METHOD FOR PRODUCING RAILWAY WHEEL AND RAILWAY WHEEL"
}