国家/地区 中国（2）
IPC部 B（2）
IPC大类 B21（2）
IPC小类 C09D（2）
IPC C09D001/00（2）
发明人 CHEN X（2）
公开年
申请年
专利权人

Preparing non-metallic quantum dot magnesium-lithium alloy-based composite material useful in aerospace, rail traffic, and automobile industry, comprises e.g. preparing two magnesium-lithium alloy plates, treating surface and performing multi-pass friction stir processing and multi-pass rolling.

LEI W, LU Y, LI X, CHEN X, MA K, ZHANG Y

Preparing titanium alloy large-diameter square thin-walled pipe comprises e.g. heating mold, insulating and preheating, fixing the preheated punch press rod on upper mold of the press, and expanding round tube into a square tube.

CHEN X, ZHANG L, QIAN C