国家/地区 中国（2）
IPC部 B（2）
IPC大类 B22（2）
IPC小类 B22D（2）
IPC B22D011/111（2）
发明人
公开年 2021（2）
申请年 2021（2）
专利权人

Producing copper rod using up-drawing production process comprises e.g. inserting crystallizer into copper liquid, inserting lead rod into crystallizer, making lead rod contact copper liquid, pulling lead rod upwards, and rewinding.

WANG H, YU J, ZHU Z

Carbon compounding method for ultra-low carbon steel protective slag, involves dividing composition of mold powder into three categories according to its composition such as base material, solvent and carbonaceous material.

YU L, GU S, WEN G, JIANG W, DONG J, WANG Z, LIU Q