US 12,420,361 B2
Braze coating material with nickel core and coating and preparation method and braze coating method thereof
Weimin Long, Henan (CN); Guanxing Zhang, Henan (CN); Yong Li, Henan (CN); Yongtao Jiu, Henan (CN); Yinyin Pei, Henan (CN); Junlan Huang, Henan (CN); Hongwei Dong, Henan (CN); and Hangyan Xue, Henan (CN)
Assigned to ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD., Henan (CN)
Filed by ZHENGZHOU RESEARCH INSTITUTE OF MECHANICAL ENGINEERING CO., LTD., Henan (CN)
Filed on Feb. 14, 2023, as Appl. No. 18/169,204.
Claims priority of application No. 202210656011.X (CN), filed on Jun. 10, 2022.
Prior Publication US 2023/0398645 A1, Dec. 14, 2023
Int. Cl. B23K 35/365 (2006.01); B23K 35/30 (2006.01); B23K 35/36 (2006.01); B23K 35/40 (2006.01)
CPC B23K 35/365 (2013.01) [B23K 35/3033 (2013.01); B23K 35/3601 (2013.01); B23K 35/3602 (2013.01); B23K 35/3607 (2013.01); B23K 35/404 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A braze coating material with a nickel core and a coating layer, comprising the nickel core, the coating layer, a hardened layer, and a protective layer sequentially from inside to outside,
wherein the nickel core is metallic nickel having a surface subjected to a roughening treatment;
the coating layer comprises, in mass percentage, 15%-45% of hard particles, 8-12% of a first brazing flux, and a balance of a brazing filler metal powder, wherein the brazing filler metal powder and the metallic nickel in the nickel core constitute a nickel-based brazing filler material;
the hardened layer contains a second brazing flux; and
the protective layer contains a silicate.