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GB/T 46083-2025Additive manufacturing — Technical specification for multi-laser beam powder bed fusion equipment (English PDF)

增材制造多光束粉末床熔融设备技术规范

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

August 29, 2025

Implementation date

March 1, 2026

Scope

GB/T 46083-2025 is the English-translated version of 增材制造多光束粉末床熔融设备技术规范.

GB/T 46083-2025 is the Chinese national standard covering a powder bed fusion machine running two or more laser beams at once — the optical, forming, motion, control and cooling systems and the ambient temperature and humidity it needs, the laser interlock on the chamber door, the oxygen alarm against inert gas leaking into the room and the dust explosion precautions, the spot diameter deviation between the beams, and the test methods, inspection rules and packaging. What separates a multi-beam machine from a single-beam one is that the beams have to agree with each other, and the spot diameter deviation is the figure that says whether they do. First edition, under the China Machinery Industry Federation. In force from 1 March 2026. Issued on 29 August 2025, it has been in force since 1 March 2026.

Document preview — GB/T 46083-2025

National Standard of the People's Republic of China

ICS: 25.030
Classification: J 59

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

PrefaceIII
1 Scope1
2 Normative References1
3 Terms and Definitions1
4 Equipment Composition and Operating Environment1
5 Safety and Protection2
6 Technical Requirements2
7 Test Methods4
8 Inspection Rules7
9 symbols9
10 Packaging, Transportation and Storage9

Foreword

This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents". Drafting.

Please note that some content in this document may involve patents. The issuing organization of this document assumes no responsibility for identifying patents.

This document was proposed by the China Machinery Industry Federation.

This document was prepared by the National Technical Committee on Standardization of Additive Manufacturing (SAC/TC562) and the National Technical Committee on Standardization of Special Processing Machine Tools.

(SAC/TC161) are jointly under the jurisdiction of the State Administration of Taxation.

This document was drafted by: Xi'an National Research Institute of Additive Manufacturing Co., Ltd., Guangdong Hanbang Laser Technology Co., Ltd., and Shenzhen Jinshi San 3D Printing Technology Co., Ltd., Beijing Power Machinery Research Institute, Hangzhou EasyPlus 3D Additive Technology Co., Ltd., Suzhou Tianhong Laser Co., Ltd.

Limited Liability Company, Beijing Hangxing Machinery Manufacturing Co., Ltd., China Machinery Productivity Promotion Center Co., Ltd., Hunan Huashu High-Tech Co., Ltd.

Xi'an Jiaotong University, Suzhou Electrical Discharge Machining Research Institute Co., Ltd., Shandong Chuangrui Additive Manufacturing Industry Technology Research Institute Co., Ltd., Xi'an Aerospace Tianji Engine Co., Ltd., Northwestern Polytechnical University, Tianjin Leiming Laser Technology Co., Ltd., Anhui Hart 3D Technology Co., Ltd., Sichuan Zhongjiu Daguang Technology Co., Ltd., Wuhan Raycus Fiber Laser Technologies Co., Ltd., Xi'an Bright Laser Technologies Co., Ltd., Weichai Power Powertrain Co., Ltd., China National Heavy Duty Truck Group Co., Ltd., Aero Engine Corporation of China Commercial Aircraft Engine Co., Ltd., Aachen United Technologies (Tianjin) Co., Ltd., Shenzhen Collaborative Innovation High-Tech Development Co., Ltd., AVIC MITEK Additive Manufacturing Technology (Beijing) Co., Ltd., Shanghai UnionTech Technology Co., Ltd., Jiaqiang (Shanghai) Intelligent Technology Co., Ltd., Chongqing Electromechanical Intelligent Manufacturing Co., Ltd. Additive Manufacturing Branch, Guangxi Da University, Chongqing University, Suzhou Beifeng Intelligent Technology Co., Ltd., Aisk Technology Co., Ltd., Zhejiang University of Technology, Aerospace Additive Manufacturing Technology (Beijing) Co., Ltd., Wuxi Inspection and Testing Certification Institute, Ocean University of China, Central Research Institute of Shanghai Electric Group Co., Ltd.

CRRC Industrial Research Institute Co., Ltd., Beijing Machinery Science and Technology Innovation Lightweight Science Research Institute Co., Ltd., Beijing Wanwei Additive Manufacturing Technology Co., Ltd.

Ningbo Haitian Additive Manufacturing Technology Co., Ltd., Shenzhen Baochenxin Laser Technology Co., Ltd., Xiamen Hanyin Co., Ltd., Jiangsu Lianying Laser Limited Liability Company, Zhejiang Tianxiong Industrial Technology Co., Ltd.

The main drafters of this document are: Chen Zhen, Liu Jianye, Guo Wenhua, Wang Di, Bai Jie, Feng Yunlong, Jin Chaolong, Lu Bingheng, Han Weiqun, Hu Fan, and Wang Ying.

Pan Liangming, Sun Yawei, Yang Huanqing, Lin Xin, Guan Kai, Luo Liangshun, Zhao Lei, Yan Dapeng, Xie Guoyin, Li Yang, Sun Yucheng, He Ke, Hou Huipeng, Tao Wang, Tan Zhenzhong, Wu Xinqiang, Yu Qingxiao, Wang Fang, Duan Huming, Long Yu, Hu Xiaoquan, Tang Hui, Yao Jianhua, Liang Chenxiao, Mao Yuyi, Liu Yonghui, Fan Enxiang Zhe Jie, Hou Mingpeng, Sheng Bin, Yang Chunhong, Li Yongjian, Lin Jinyi, Guo Ziran, He Xiaozhong. Additive manufacturing Technical Specifications for Multibeam Powder Bed Melting Equipment

1 Scope

This document specifies the composition, operating environment, safety and protection, technical requirements, inspection rules, and markings for multi-beam powder bed melting equipment.

Packaging, transportation, and storage, along with the inspection methods, are described.

This document applies to the design and manufacture of powder bed melting equipment that uses two or more laser beams as energy sources and metal powder as forming material.

Manufacturing and factory inspection.

2 Normative references

GB/T 191

GB/T 228.1

GB 2894

GB/T 3850-2015

GB/T 5226.1

GB/T 7247.1

GB/T 7247.4

GB/T 13306

GB/T 14896.7

GB 15577-2018

GB/T 18490.1

GB 25493

GB 26503

GB/T 35351

GB/T 43141-2023

3 Terms and Definitions

The terms and definitions defined in GB/T 35351 and GB/T 14896.7 apply to this document.

4 Equipment composition and operating environment

4.1 Equipment Composition

The multi-beam powder bed melting equipment (hereinafter referred to as "the equipment") mainly consists of an optical path system, a forming system, a mechanical motion system, and electrical and control systems.

The system consists of a cooling system and other supporting components. Depending on the agreement between the supplier and the buyer, it may also include a powder circulation system and an online molding quality monitoring system.

The system, etc., and its constituent systems and main functions are shown in Table 1.

Table 1.Main Components and Functions of the Equipment Name composition function The optical system includes a laser, scanning galvanometer, and lenses, etc.

Provide two or more laser beams to act on the metal powder, for its Melting provides an energy source The forming system includes a forming chamber, a sealing system, and a gas circulation and filtration system, providing a controllable forming environment with controlled airflow and oxygen content. Mechanical motion system It mainly includes a forming platform, a lifting mechanism, and a powder supply mechanism.

and powder spreading institutions, etc.

It performs functions such as powder supply and powder spreading during the forming process.

Electrical and control systems include software, control system hardware, and electrical systems.

The control equipment's various systems and components operate stably, and the control parameters are monitored.

Monitor, record, and save data and equipment status.

The cooling system includes cooling circulation devices and piping, etc.

Ensure the key components of the equipment (laser, galvanometer, substrate, forming) (e.g., room) operates within a suitable temperature range.

4.2 Usage Environment

The equipment should operate in a well-ventilated environment, and the operating conditions should preferably meet the following requirements.

a) Ambient temperature. 15°C~35°C;

b) Relative humidity. 10%~75%;

c) Vibration. There are no obvious vibration sources around the equipment.

5 Safety and Protection

5.1 The safety protection of the equipment shall comply with the provisions of GB 25493 and GB 26503.

5.2 The electrical safety of the equipment shall comply with the provisions of GB/T 5226.1.

5.3 The safety protection of the equipment's laser system shall comply with the provisions of GB/T 18490.1, and the forming chamber door shall have a laser safety interlock to ensure laser output.

The molding chamber door must not be opened during operation.

5.4 Laser radiation safety protection shall comply with the provisions of GB/T 7247.4, and the window glass shall be able to effectively prevent laser radiation from causing harm to people.

5.5 Depending on the ventilation performance of the location where the equipment will be used, the equipment should be equipped with an ambient oxygen concentration detection and alarm device to prevent inert gas leakage.

This could lead to an oxygen deficiency accident.

5.6 The equipment manufacturer shall clearly specify the safe operating procedures for the gas circulation filtration system and the requirements for fire extinguishing equipment in the operating instructions.

Based on the flammability and explosion risks of different materials, flammability and explosion warning signs should be clearly displayed in prominent locations on the equipment, in accordance with section 6.5 of GB 15577-2018. Regulation.

6 Technical Requirements

6.1 Appearance Quality

The appearance quality of the equipment shall meet the requirements of 5.3 in GB/T 43141-2023.

6.2 Optical Path System

6.2.1 Multi-beam spot diameter deviation. When the laser beam diameter is not greater than 50 µm, the multi-beam spot diameter deviation should not be greater than 3 µm;

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 3850-2015 · GB/T 5226.1 · GB/T 7247.4 · GB/T 18490.1 · GB 25493 · GB 26503 · GB/T 35351

Editions of GB/T 46083

Edition	Title	Revision	Status
GB/T 46083-2025	Additive manufacturing - Technical specification for multi-laser beam powder bed fusion equipment	current edition	Current

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