国家/地区 中国（2）
IPC部 B（2）
IPC大类 B23（2） C21（2）
IPC小类 B23P（2）
IPC B23P015/00（2）
发明人
公开年 2022（2）
申请年 2022（2） 
专利权人

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

Mining hydraulic support repairing device, has adjusting mechanism comprising two sliding groove plates symmetrically and uniformly distributed and fixedly installed on top surface of bottom plate.

XIE S, SHAO H, JIAO G, ZHANG H, LI X