公开(公告)号：US20180222113A1

公开(公告)日：2018-08-09

申请号：US15881105

申请日：2018-01-26

Applicant: Hitachi, Ltd.

Inventor： Akihiro YAMAGUCHI ,  Satoshi ARAI ,  Shigeharu TSUNODA

IPC: B29C64/153 ,  B33Y10/00 ,  B33Y80/00 ,  A61N5/10

CPC classification number: B29C64/153 ,  A61N5/10 ,  A61N2005/1095 ,  B29C64/393 ,  B29L2011/0066 ,  B33Y10/00 ,  B33Y50/02 ,  B33Y80/00

Abstract: To prevent warp deformation of a molded object which is formed by laser powder layer laminating molding.There is provided a powder layer laminating molding method including a first step of forming a powder layer which includes powder of a thermoplastic resin, and a second step of sintering the powder layer by irradiating the formed powder layer with a beam having a heating action, in which a molded object is obtained by repeatedly performing the forming and the sintering of the powder layer in the first step and the second step, and an irradiation surface which is irradiated with the beam is divided into a plurality of small regions.

公开(公告)号：US20160332370A1

公开(公告)日：2016-11-17

申请号：US15110517

申请日：2014-10-22

Applicant: Hitachi, Ltd.

Inventor： Satoshi ARAI ,  Wataru SAWADA ,  Ryotaro SHIMADA

IPC: B29C67/00 ,  B33Y30/00 ,  B29B13/08 ,  B33Y50/02 ,  B29C71/04 ,  B33Y10/00 ,  B33Y40/00

CPC classification number: B29C71/04 ,  B29B13/08 ,  B29C59/10 ,  B29C59/14 ,  B29C59/16 ,  B29C64/153 ,  B29C2035/0827 ,  B29C2035/0838 ,  B29C2059/145 ,  B29C2791/009 ,  B29K2105/251 ,  B29K2995/0041 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/00

Abstract: Provided is a method capable of enhancing the quality (interlaminar strength, void reduction) of a lamination shaped article and using a high-heat resistant resin, and which has low cost and good quality and does not use a process window, and enhances release properties of a support. A laser powder shaping method for fabricating a lamination shaped article, the method having a step for providing a powder material as a thin layer and a laser irradiating step for irradiating the provided powder material with a laser and thereby sintering or melting the powder material, the laser powder shaping method characterized by having a step for performing a surface modification treatment for generating or increasing the number of oxygen functional groups in a region irradiated by the laser before or after the step for providing the powder material, or before or after the laser irradiation step.

Abstract translation: 本发明提供一种能够提高层叠成型制品的质量（层间强度，空隙率降低）和使用高耐热性树脂的方法，其成本低，质量好，不使用工艺窗口，并且提高剥离性能 的支持。 一种用于制造层压成型制品的激光粉末成型方法，具有提供粉末材料作为薄层的步骤的方法和用激光照射所提供的粉末材料并由此烧结或熔化粉末材料的激光照射步骤， 激光粉末成形方法，其特征在于具有进行表面改性处理以在激光照射步骤之前或之后或在激光照射之前或之后产生或增加激光照射的区域中氧官能团数目的步骤 步。