公开(公告)号：US11193195B2

公开(公告)日：2021-12-07

申请号：US16616323

申请日：2018-05-17

Applicant: TOCALO CO., LTD. ,  DAIDO STEEL CO., LTD. ,  DAIDO CASTINGS CO., LTD.

Inventor： Junichi Takeuchi ,  Masaya Nagai ,  Shinichi Kubo ,  Masashi Nagaya ,  Yoshinori Sumi ,  Yoshihiko Koyanagi ,  Hiroyuki Takabayashi ,  Yasuhiro Takenaka

IPC: C23C4/067 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/20 ,  C22C38/22 ,  C22C38/24 ,  C22C38/28 ,  C22C38/30 ,  C22C38/32 ,  C22C38/48 ,  C23C4/10 ,  C22C38/08 ,  C22C38/10 ,  C22C38/34 ,  C22C38/38 ,  C22C38/18 ,  C23C4/11

Abstract: A component for a hot-dip metal plating bath includes a base material and a thermal spray coating disposed to cover a surface of the base material. The base material includes ferritic stainless steel that contains: C: 0.10% to 0.50% by mass; Si: 0.01% to 4.00% by mass; Mn: 0.10% by mass to 3.00% by mass; Cr: 15.0% to 30.0% by mass; a total of Nb, V, Ti, and Ta: 0.9% by mass to 5.0% by mass; and a balance of Fe and unavoidable impurities. The ferritic stainless steel includes a microstructure that includes a ferrite phase as a main phase and a crystallized carbide, an area fraction of a Nb carbide, a Ti carbide, a V carbide, a Ta carbide, and a composite carbide thereof to the crystallized carbide of 30% or more. The hot-dip metal plating bath contains 50% by mass or more of Al.

公开(公告)号：US20200087770A1

公开(公告)日：2020-03-19

申请号：US16616323

申请日：2018-05-17

Applicant: TOCALO CO., LTD. ,  DAIDO STEEL CO., LTD. ,  DAIDO CASTINGS CO., LTD.

Inventor： Junichi TAKEUCHI ,  Masaya NAGAI ,  Shinichi KUBO ,  Masashi NAGAYA ,  Yoshinori SUMI ,  Yoshihiko KOYANAGI ,  Hiroyuki TAKABAYASHI ,  Yasuhiro TAKENAKA

IPC: C23C4/11 ,  C22C38/48 ,  C22C38/32 ,  C22C38/30 ,  C22C38/28 ,  C22C38/24 ,  C22C38/22 ,  C22C38/20 ,  C22C38/06 ,  C22C38/04 ,  C22C38/02 ,  C22C38/00 ,  C23C4/067

Abstract: A component for a hot-dip metal plating bath includes a base material and a thermal spray coating disposed to cover a surface of the base material. The base material includes ferritic stainless steel that contains: C: 0.10% to 0.50% by mass; Si: 0.01% to 4.00% by mass; Mn: 0.10% by mass to 3.00% by mass; Cr: 15.0% to 30.0% by mass; a total of Nb, V, Ti, and Ta: 0.9% by mass to 5.0% by mass; and a balance of Fe and unavoidable impurities. The ferritic stainless steel includes a microstructure that includes a ferrite phase as a main phase and a crystallized carbide, an area fraction of a Nb carbide, a Ti carbide, a V carbide, a Ta carbide, and a composite carbide thereof to the crystallized carbide of 30% or more. The component contains 50% by mass or more of Al.