公开(公告)号：US11618085B2

公开(公告)日：2023-04-04

申请号：US16800688

申请日：2020-02-25

Applicant: UNIVERSITY OF SCIENCE AND TECHNOLOGY BEIJING

Inventor： Baicheng Zhang ,  Lin Zhang ,  Shubin Ren ,  Mingli Qin ,  Xuanhui Qu

IPC: B33Y30/00 ,  B22F12/58 ,  B22F12/67 ,  B22F10/28 ,  B22F12/49 ,  B22F10/14

Abstract: A selective laser melting technology-based apparatus for preparing a gradient material, comprising a laser scanning array lens, and a powder storer, a powder mixer, a powder scraping plate, and a working platform that are provided in sequence from top to bottom; the powder storer is provided with two or more partitions; a bottom portion of the powder storer is provided with an outlet; the powder mixer is provided under the powder storer and is a horizontally provided rotational mixer; the powder scraping plate is disposed under the powder mixer; the working platform is provided under the powder scraping plate; the laser scanning array lens is provided on the working platform. The present invention further relates to a method for preparing a gradient material, comprising powder storing, powder scraping, powder mixing, powder laying, and printing. The method can guarantee the two-phase powder ratio in each layer of powder not change.