公开(公告)号：US20190329374A1

公开(公告)日：2019-10-31

申请号：US16462222

申请日：2017-11-24

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Haiou Zhang ,  Guilan Wang ,  Huayu Zhang

IPC: B24B19/22 ,  B33Y10/00

Abstract: A combined additive manufacturing method applicable to parts and molds relates to moldless-growth manufacturing of parts and molds, which includes steps of: S1: layering and slicing a three-dimensional CAD (computer-aided design) model of a workpiece to be formed according to shape, thickness and dimensional accuracy requirements of the workpiece, so as to obtain a plurality of layered slice data; S2: planning a forming path according to the layered slice data, and generating layered slice numerical control codes for forming; and S3: deposition-forming a powder material on a substrate layer-by-layer and performing pressure forming or milling forming according to the layered slice numerical control codes in the step S2, which uses a numerically controlled high-speed cold spray gun to spray the powder material to a determined position for deposition-forming. The method of the present invention overcomes thermally induced adverse effects of hot processing and drawbacks of cold spray deposition.

公开(公告)号：US11298792B2

公开(公告)日：2022-04-12

申请号：US16462222

申请日：2017-11-24

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Haiou Zhang ,  Guilan Wang ,  Huayu Zhang

IPC: B33Y10/00 ,  B29C44/36 ,  B24B19/22 ,  B22F3/24 ,  B28B1/32 ,  B22F10/40

Abstract: A combined additive manufacturing method applicable to parts and molds relates to moldless-growth manufacturing of parts and molds, which includes steps of: S1: layering and slicing a three-dimensional CAD (computer-aided design) model of a workpiece to be formed according to shape, thickness and dimensional accuracy requirements of the workpiece, so as to obtain a plurality of layered slice data; S2: planning a forming path according to the layered slice data, and generating layered slice numerical control codes for forming; and S3: deposition-forming a powder material on a substrate layer-by-layer and performing pressure forming or milling forming according to the layered slice numerical control codes in the step S2, which uses a numerically controlled high-speed cold spray gun to spray the powder material to a determined position for deposition-forming. The method of the present invention overcomes thermally induced adverse effects of hot processing and drawbacks of cold spray deposition.

公开(公告)号：US20210060856A1

公开(公告)日：2021-03-04

申请号：US17005865

申请日：2020-08-28

Applicant: Huazhong University of Science and Technology

Inventor： Haiou Zhang ,  Xiaoqi HU ,  Fusheng DAI ,  Guilan WANG

IPC: B29C64/153 ,  B29C64/255 ,  B29C64/188 ,  B29C64/314 ,  B29C64/245

Abstract: The present invention belongs to the field of multi-material additive manufacturing (AM), and in particular discloses a forming system and method of hybrid AM and surface coating. The hybrid forming system includes an additive forming device, a laser-assisted cold spraying (LACS) device and a workbench. The additive forming device and the LACS device are located above the workbench. During manufacturing, the additive forming device forms a part to be formed on the workbench layer by layer, and the LACS device performs coating peening treatment on inner and outer surfaces of the part to be formed during the forming process, thereby jointly completing the composite manufacturing of the part to be formed. The present invention makes full use of the rapid prototyping advantage of the short-flow AM process, and integrates the surface coating peening process into the hybrid forming system.

公开(公告)号：US11247392B2

公开(公告)日：2022-02-15

申请号：US17005865

申请日：2020-08-28

Applicant: Huazhong University of Science and Technology

Inventor： Haiou Zhang ,  Xiaoqi Hu ,  Fusheng Dai ,  Guilan Wang

IPC: B29C64/153 ,  B29C64/314 ,  B29C64/188 ,  B29C64/245 ,  B29C64/255 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y40/10

Abstract: The present invention belongs to the field of multi-material additive manufacturing (AM), and in particular discloses a forming system and method of hybrid AM and surface coating. The hybrid forming system includes an additive forming device, a laser-assisted cold spraying (LACS) device and a workbench. The additive forming device and the LACS device are located above the workbench. During manufacturing, the additive forming device forms a part to be formed on the workbench layer by layer, and the LACS device performs coating peening treatment on inner and outer surfaces of the part to be formed during the forming process, thereby jointly completing the composite manufacturing of the part to be formed. The present invention makes full use of the rapid prototyping advantage of the short-flow AM process, and integrates the surface coating peening process into the hybrid forming system.

公开(公告)号：US09302338B2

公开(公告)日：2016-04-05

申请号：US13651509

申请日：2012-10-15

Applicant: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Haiou Zhang ,  Guilan Wang

IPC: G06F17/50 ,  B23K9/04 ,  B22F3/105 ,  B29C67/00 ,  B23K10/00 ,  B23K26/34 ,  B23K35/30 ,  B23K35/02 ,  B23K26/32

CPC classification number: B23K9/044 ,  B22F3/1055 ,  B22F2003/1056 ,  B22F2999/00 ,  B23K10/006 ,  B23K26/32 ,  B23K26/342 ,  B23K35/0244 ,  B23K35/3053 ,  B23K35/3066 ,  B23K2101/35 ,  B23K2103/08 ,  B23K2103/16 ,  B23K2103/50 ,  B23K2103/52 ,  B23P23/04 ,  B29C64/106 ,  B33Y10/00 ,  B33Y30/00 ,  B33Y50/00 ,  Y02P10/295 ,  B22F3/18 ,  B22F3/20

Abstract: A method for manufacturing parts and molds by: 1) slicing a three-dimensional CAD model of a part or mold; 2) planning a modeling path according to slicing data of the three-dimensional CAD model, whereby generating numerical control codes for modeling processing; and 3) performing fused deposition modeling of powders or wire material of metal, intermetallic compounds, ceramic and composite functional gradient materials by layer using a welding gun on a substrate layer via a numerical control gas shielded welding beam or laser beam according to a track specified by the numerical control code for each layer. A micro-roller or a micro-extrusion unit is installed at a contact area between melted and softened areas. The micro-roller or the micro-extrusion unit synchronously moves along with fused deposition area, which results in compressing and processing of the fused deposition area during the fused deposition modeling.

Abstract translation: 一种通过以下方式制造零件和模具的方法：1）切割零件或模具的三维CAD模型; 2）根据三维CAD模型的切片数据规划建模路径，从而生成用于建模处理的数值控制代码; 和3）通过数字控制气体保护焊接梁或激光束根据指定的轨迹，使用焊枪在基底层上通过层对金属，金属间化合物，陶瓷和复合功能梯度材料的粉末或线材进行熔融沉积建模 通过每层的数字控制代码。 在熔化区域和软化区域之间的接触区域上安装微辊或微挤出单元。 微辊或微挤出单元与熔融沉积区域同步移动，这在熔融沉积建模期间导致熔融沉积区域的压缩和加工。