国家/地区 中国（2）
IPC部 B（2）
IPC大类 B22（2） C22（2）
IPC小类 B22F（2）
IPC B22F009/04（2）
发明人 ZHANG C（2）
公开年 2021（2）
申请年 2021（2） 
专利权人 HUNAN ZHONGX.（2）

Preparation of vanadium-nitrogen alloy for steel, involves stirring and mixing raw material comprising vanadium oxide or vanadium salt, carbonaceous reducing agent, binder, nitrogen increasing agent, iron powder and stearic acid.

UNANNOUNCED I, ZHANG C

Increasing nitrogen content of vanadium iron nitride used for e.g. high-strength thread steel, involves mixing vanadium source, carbonaceous reducing agent, iron powder, and tin dioxide, ball milling, vacuumizing, introducing mixed gas of nitrogen and ammonia and heating.

ZHANG C