国家/地区 中国（4）
IPC部 B（4）
IPC大类 C21（4）
IPC小类 C21D（4） C23C（4） C09D（2）
C22C（2）
IPC C21D001/18（4）
发明人
公开年
申请年 2020（2）  2022（2） 
专利权人

Manufacturing high strength alloy steel bolt comprises taking steel for bolt, performing extrusion, hot upsetting, heat treatment and thread machining to obtain bolt blank, and performing galvanizing and zinc-aluminum coating into bolt blank.

ZHOU H

Preparing multi-composite processing self-lubricating steel bushing useful for preparing bushing, comprises e.g. quenching the bushing blank and tempering, roughly processing the bushing blank, then carrying out salt bath sulfur carbonitriding treatment and performing first spraying.

YIN M

Preparing graphene metal composite plate comprises e.g. polishing outer surface of metal plates using grinding machine, soaking in diluted hydrochloric acid solution, heating, clamping, coating graphene, extruding and rolling.

BAO Z, HUANG W, XU L, LI D, LI W, AN J

Preparing high corrosion resistance medium entropy quench and partitioning steel comprises e.g. preparing graphene oxide/alluminum composite powder, preparing graphene solution by adding graphene to deionized water.

LIU H, LIU L, YANG H, SUN F, JING X, PEI C