{
  "$type": "site.standard.document",
  "description": "The present invention relates to a steel cord for rubber reinforcement wherein a steel wire for steel cord has a plating layer of a ternary or quaternary alloy. The steel wire for the steel cord of the present invention comprises a plating layer of Cu-M-Zn (M is one or two elements of Co, Ni, Cr…",
  "path": "/patents/1296638",
  "publishedAt": "2021-08-05T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60C9/0007",
    "TREFIL ARBED KOREA CO., LTD"
  ],
  "textContent": "The present invention relates to a steel cord for rubber reinforcement wherein a steel wire for steel cord has a plating layer of a ternary or quaternary alloy. The steel wire for the steel cord of the present invention comprises a plating layer of Cu-M-Zn (M is one or two elements of Co, Ni, Cr, Mo, Al, In, or Sn) and has a concentration gradient in which the M content ratio in a region from the surface to ¼ of the plating layer is 40% or more compared with the M content ratio in the entire region of the plating layer, and the steel cord for rubber reinforcement is obtained by a manufacturing method comprising: performing sequential plating on a surface of a steel wire in the order of Cu→M→Zn; performing a primary diffusion, for concentration gradient of M, by subjecting the sequentially plated steel wire to high-frequency induction heating using 1-500 MHz; and performing a secondary diffusion, following the primary diffusion, by medium-frequency induction heating using 10-500 KHz.",
  "title": "STEEL CORD FOR RUBBER ENHANCEMENT AND MANUFACTURING METHOD THEREFOR"
}