国家/地区 中国（4）
IPC部 C（4） B（2）
IPC大类 C21（4） C23（4） C09（2）
C22（2）
IPC小类 C21D（4） C23C（4） C09D（2）
C22C（2）
IPC C21D001/18（4）
发明人
公开年 2022（3）
申请年 2022（4）
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

Lubricating sliding sheet useful for compressor, has nano sebum micro-capsule distributed on sliding sheet main body, nitriding layer, nickel-phosphorus layer, and nano-level solid sebum, where main body is D-cast iron.

LI Y, JIA B, SHI Z, ZHENG 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

Producing high-performance engineering fastener material useful for fastening at least two parts or components in engineering field, comprises e.g. choosing steel bar as engineering fastener raw material, carrying out degreasing, decontamination and rust removal treatment, compacting and cooling.

SHEN J, HU L, LI H, ZHANG Y