GB/T 42617-2023 English PDF

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GB/T 42617-2023: Additive manufacturing - Design - Laser-based powder bed fusion of metals
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Basic data

Standard ID: GB/T 42617-2023 (GB/T42617-2023)
Description (Translated English): Additive manufacturing - Design - Laser-based powder bed fusion of metals
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J04
Classification of International Standard: 25.030
Word Count Estimation: 27,277
Date of Issue: 2023-05-23
Date of Implementation: 2023-12-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 42617-2023: Additive manufacturing - Design - Laser-based powder bed fusion of metals

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
ICS 25:030 CCSJ04 National Standards of People's Republic of China Additive Manufacturing Design Metal Materials Laser Powder Bed Fusion Released on 2023-05-23 2023-12-01 implementation State Administration for Market Regulation Released by the National Standardization Management Committee

table of contents

Preface I Introduction II 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Symbols and abbreviations 2 4:1 Symbol 2 4:2 Abbreviations 2 5 Process characteristics 3 5:1 Part size 3 5:2 Advantages of PBF process 3 5:3 PBF process limitations 4 5:4 Economy and efficiency 4 5:5 Functional Constraints 4 5:6 Size, shape and position accuracy 6 5:7 Data quality, resolution, representation 6 6 Design Guidelines 6 6:1 Material and structural properties 6 6:2 Support structure 7 6:3 Forming direction, position and placement 8 6:4 Anisotropy of materials 11 6:5 Surface Roughness 11 6:6 Post-processing 11 6:7 Design concerns 12 Appendix A (informative) Comparison between this document and ISO /ASTM52911-1:2019 structure number 14 Appendix B (informative) Technical differences between this document and ISO /ASTM52911-1:2019 and their reasons 16 Appendix C (informative) Raw materials for PBF-LB/M 17 Appendix D (Informative) Application Case 18 Reference 22

foreword

This document is in accordance with the provisions of GB/T 1:1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules for Standardization Documents" drafting: This document is modified to adopt ISO /ASTM52911-1:2019 "Design for Additive Manufacturing Part 1: Laser Powder Bed Fusion of Metal Materials melt": Compared with ISO /ASTM52911-1:2019, this document has more structural adjustments: Structure number changes between two files See Appendix A for a comparison list: Compared with ISO /ASTM52911-1:2019, this document has many technical differences: Settings are marked with a single vertical line (|): See Appendix B for a list of these technical differences and their causes: The following editorial changes have been made to this document: --- In order to coordinate with existing standards, change the name of the standard to "Laser powder bed fusion of metal materials for additive manufacturing design"; ---Added the abbreviations "3D" and "2:5D", changed the abbreviations "PBF-LB/M" and Another name for "STL" (see 4:2); --- Merge the content of process advantages in 6:1:1 of ISO /ASTM52911-1:2019 into 5:2, and the content of process limitations into 5:3, at the same time adjust the surface treatment content of 6:7:5 in ISO /ASTM52911-1:2019 to 6:6:2; --- Replaced ISO /ASTM52915 with the informative referenced GB/T 35352; --- Deleted the commercial introduction of 3MF in 5:8 of ISO /ASTM52911-1:2019; --- Added Appendix A (informative) and the comparison between this document and ISO /ASTM52911-1:2019 structure number; --- Added Appendix B (informative) and the technical differences between this document and ISO /ASTM52911-1:2019 and their reasons; ---Changed the raw material designation of ISO /ASTM52911-1:2019 Table A:1 (see Table C:1); --- Deleted the application case of 6:9 in ISO /ASTM52911-1:2019, and added the application case of my country (see Appendix D): Please note that some contents of this document may refer to patents: The issuing agency of this document assumes no responsibility for identifying patents: This document is proposed by China Machinery Industry Federation: This document is under the jurisdiction of the National Additive Manufacturing Standardization Technical Committee (SAC/TC562): This document is drafted by: Beijing Satellite Manufacturing Co:, Ltd:, Anhui Tuobao Additive Manufacturing Technology Co:, Ltd:, China Machine Research Institute Standard Technology Research Institute Research Institute (Beijing) Co:, Ltd:, Jiangsu XCMG Construction Machinery Research Institute Co:, Ltd:, South China University of Technology, China Aviation Development Shanghai Commercial Aviation Engine Machine Manufacturing Co:, Ltd:, Shandong Chuangrui Laser Technology Co:, Ltd:, Huazhong University of Science and Technology, Ocean University of China, Beijing Institute of Technology, Shanghai Materials Research Institute, China Machine Productivity Promotion Center Co:, Ltd:, Beijing Xinghang Electromechanical Equipment Co:, Ltd:, China Aviation Development Beijing Aeronautical Materials Research Institute, Beijing Institute of Remote Sensing Equipment, Commercial Aircraft Corporation of China Beijing Civil Aircraft Technology Research Center, China Machinery Science Research General Institute Group Co:, Ltd:, Beijing Huitianwei Technology Co:, Ltd: The main drafters of this document: Jiang Jiang, Zhang Chenglin, Xue Lian, He Bing, Wang Di, Hou Huipeng, Lu Zhongli, Yan Chunze, Qi Junfeng, Liu Yonghui, Wang Panding, Ni Xiaoqing, Shang Yaoming, Jiao Shikun, Liang Jiayu, Zhu Rongquan, Wang Yu, Zhu Zheng, Shang Peng, Jia Mintao:

Introduction

Metal material laser powder bed fusion process (LB-PBF/M) is a kind of metal additive manufacturing process, which has been widely used in aerospace, Medical, mold, energy, automobile and other fields: LB-PBF/M has excellent product performance and high material utilization rate, which can shorten the product development cycle period, reduce production costs, and realize integrated forming of complex parts: Due to the diversity of forming materials, it is determined that the LB-PBF/M process can meet Forming requirements for multiple types of parts with different characteristics and uses: LB-PBF/M utilizes the thermal effect of the high-energy laser beam to rapidly melt the metal powder material and accumulate it layer by layer to obtain three-dimensional solid parts: Some unmelted powders are recovered by sieving and mixed with the original powders, which can be recycled in the subsequent forming process: Commonly used metal powders Final materials include titanium alloy, aluminum alloy, superalloy, stainless steel, etc: Compared with the traditional manufacturing process (such as subtractive material and equal material manufacturing), the LB-PBF/M process has different concerns in the design stage: LB- PBF/M has no restrictions similar to traditional processes, which provides designers and manufacturers with a high degree of freedom, but it is also necessary to understand the manufacturability of the process: creativity and limitations: This document describes the process characteristics and design criteria for laser powder bed fusion of metallic materials Design provides guidance and methods, guides users in the process of transforming design ideas into physical parts, and helps designers determine design elements and make full use of them: Take advantage of craftsmanship: This document can effectively promote product designers to master the technical characteristics of laser powder bed fusion of metal materials, and to grasp the advantages of additive materials: The key to manufacturing product design, improving the quality and performance of additive manufacturing products, and promoting the additive manufacturing industry to a more orderly, reasonable and economical direction It has good economic and social benefits: Additive Manufacturing Design Metal Materials Laser Powder Bed Fusion

1 Scope

This document specifies process characteristics and design guidelines for laser powder bed fusion of metallic materials: This document is applicable to the design of laser powder bed fusion process for metal materials:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document: GB/T 35351 Additive Manufacturing Terminology GB/T 37698 Additive manufacturing design requirements, guidelines and recommendations (GB/T 37698-2019, ISO /ASTM52910: 2008, MOD)

3 Terms and Definitions

The following terms and definitions defined in GB/T 35351 apply to this document: 3:1 warping effect curleffect < Heat-induced warping> Warping deformation caused by poor heat dissipation or uneven shrinkage when the material cools and solidifies: 3:2 lower surface area downskinarea Normal vector n on the z axis → projected as a negative (sub)region: Note: See Figure 1: 3:3 lower surface angle downskinangle angle between the plane of the forming platform and the lower surface area (3:2): Note: See Figure 1: 3:4 upper surface area upskinarea Normal vector n on the z axis → projected as a positive (sub)region: Note: See Figure 1: 3:5 upper surface angle upskinangle ......

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