国家/地区 中国（3）
IPC部 F（3）
IPC大类 F16（3）
IPC小类 F16B（3）
IPC F16B033/00（3）
发明人 LIU X（2）
公开年 2021（2）
申请年 2021（2） 
专利权人

Preparing coating for screw thread, comprises e.g. providing workpieces with screw thread, pretreating screw thread part of workpieces with screw thread; sandblasting workpiece with screw thread after pretreatment; and preheating workpiece with screw thread after sandblasting.

SUN J, WANG Y, WANG L, LI R, SONG X, LIU X

High corrosion resistant cobalt-based alloy screw element, has adjusting cavity whose inner wall is provided with inner spiral groove with equal distance, where surface of screw element main body is coated with chromium alloy layer.

XIE X

Ceramic matrix composite stud comprises e.g. fiber preform, composite interface layer including pyrolytic carbon interface layer, boron nitride interface layer, and silicon carbide interface layer, and ceramic matrix.

ZHANG D, WU H, CAO W, WEI Q, YAO D, LIU X, PAN G