国家/地区 中国（3）
IPC部 C（4）
IPC大类 C21（4）
IPC小类 C21D（4）
IPC C21D009/00（3） C21D001/18（2） C21D006/00（2）
C22C033/04（2） C22C038/44（2） F16D065/12（2）
发明人
公开年
申请年 2020（2） 
专利权人

High strength conversion flange comprises steel material having carbon, silicon, manganese, chromium, nickel, molybdenum, gallalium, Rhenium, zirconium, lutetium, and strontium.

MENG K

Processing and molding corrosion-resistant screw, comprises e.g. preparing pretreated wire by adding specific series wire into hanging furnace, heating, cooling, then adding processed wire into cold heading machine, and post-processing.

DENG Q

Brake disc containing metallic niobium composition comprises e.g. main material composed of iron, carbon, silicon, manganese, niobium and molybdenum, and auxiliary material composed of zirconia toughened ceramic powder, and graphene powder.

FENG G

Brake drum used for vehicles, contains composition which consists of specific amount of chromium, carbon, manganese, silicon, sulfur, molybdenum and graphene.

HWANG J, HWANG J H