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GB/T 41978-2022 English PDF

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US$189.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 41978-2022: Additive manufacturing - Test method for hollow particle ratio of metal powders
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 41978-2022	189	Add to Cart	3 days	Additive manufacturing - Test method for hollow particle ratio of metal powders	Valid

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Basic data

Standard ID: GB/T 41978-2022 (GB/T41978-2022)
Description (Translated English): Additive manufacturing - Test method for hollow particle ratio of metal powders
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H71
Classification of International Standard: 25.030; 77.160
Word Count Estimation: 10,136
Date of Issue: 2022-10-14
Date of Implementation: 2022-10-12
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 41978-2022: Additive manufacturing - Test method for hollow particle ratio of metal powders

---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.
Additive manufacturing -- Test method for hollow particle ratio of metal powders ICS 25.030;77.160 CCSH71 National Standards of People's Republic of China Additive manufacturing metal powder hollow powder rate detection method Published on 2022-10-12 2022-10-12 Implementation State Administration for Market Regulation Released by the National Standardization Administration directory Preface III 1 Scope 1 2 Normative references 1 3 Terms and Definitions 1 4 Principle 1 5 Sample 2 6 Test method 2 7 Experimental data processing 5 8 Test report 5

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 of Standardization Documents" drafted. Please note that some content of this document may be patented. The issuing agency of this document assumes no responsibility for identifying patents. This document is proposed by China Machinery Industry Federation. This document is sponsored by the National Standardization Technical Committee for Additive Manufacturing (SAC/TC562) and the National Nonferrous Metals Standard Technical Committee (SAC/TC243) Commonly managed. This document is drafted by. Shanghai Institute of Materials Research, Guohe General Testing Evaluation and Certification Co., Ltd., Wuxi Inspection, Testing and Certification Research Institute, China Machinery Research Institute Group Co., Ltd., Beijing Institute of Technology, AVIC Metal Powder Metallurgy Technology (Beijing) Co., Ltd., China Machinery Productivity Promotion Center Co., Ltd., Nonferrous Metals Technology and Economic Research Institute Co., Ltd., University of Science and Technology Beijing, Northwest Nonferrous Metals Research Institute, Xi'an National Research Institute of Additive Manufacturing Co., Ltd., Zhongtian Shangmai Additive Manufacturing Co., Ltd., Northwestern Polytechnical University, China Aviation Development Commercial Aircraft Engine Co., Ltd., Iron and Steel Research Institute Co., Ltd., Ningbo Zhongyuan New Material Technology Co., Ltd., Xi'an Sailong Metal Materials Co., Ltd. Company, National Standard (Beijing) Inspection and Certification Co., Ltd., Zhejiang Yatong Welding Materials Co., Ltd., Panxing New Alloy Materials (Changzhou) Co., Ltd., Xi'an Europe China Materials Technology Co., Ltd., Youyan Additive Technology Co., Ltd., South China University of Technology, China Aviation Development Beijing Institute of Aeronautical Materials, Hunan Farsoon High-tech Co., Ltd., China Machinery Manufacturing Technology Association, Zhuhai Tianwei Pegasus Printing Consumables Co., Ltd., China Machinery New Materials Research Institute (Zhengzhou) Co., Ltd., Industrial Analysis and Testing Center of Guangdong Academy of Sciences, Stardust Technology (Guangdong) Co., Ltd., Liaoning Additive Manufacturing Industry Technology Research Institute Co., Ltd., Anhui Xiangbang Composite Materials Co., Ltd. The main drafters of this document. Yang Qiyun, Zhang Limin, Mao Yuyi, Bi Ran, Lei Hongshuai, Gao Zhengjiang, Xue Lian, Cui Yan, Kong Decheng, Tan Ping, Hou Ying, Zhang Liang, Gu Sunwang, Lin Xin, Lei Liming, Wang Changjun, Zhao Wenjun, Qiu Sha, Liu Shufeng, Weng Ziqing, Xiao Haibo, Song Jiaming, Liu Yingjie, Wang Di, Liang Jiayu, Xu Feng, Zhan Li, Qiao Huaixin, Wang Miaohui, Dong Chaofang, Wu Wenheng, Liu Yingkun, Mao Xinhua, Liu Changsheng, Wang Lei, Xia Wen. Additive manufacturing metal powder hollow powder rate detection method

1 Scope

This document describes the principle, sample, test method, test data processing and test method of metal powder hollow powder rate detection method for additive manufacturing. inspection report. This document applies to the detection of the hollow powder rate of metal powders for additive manufacturing.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document. GB/T 13298 Metal Microstructure Test Method GB/T 16594 General Rules for Measurement Methods of Scanning Electron Microscopy of Micron Length GB/T 29070-2012 General requirements for non-destructive testing industrial computer tomography (CT) testing GB/T 35351 Additive Manufacturing Terminology

3 Terms and Definitions

GB/T 35351 as well as the following terms and definitions apply to this document. 3.1 hollow powderholowparticle Metal powder with closed or semi-closed pores inside. 3.2 hollow particleratio The ratio of the number of hollow powder particles to the total number of powder particles. Note. The hollow powder rate is expressed as a percentage (%).

4 Principles

4.1 Microscopy The metal powder is mounted, ground and polished by the metallographic mounting method to obtain the powder metallographic sample, and then the metallographic sample is obtained by using an optical microscope or scanning electron microscope. Submicroscope-backscattered electron imaging observes the cross-sectional image of powder particles, and counts the total number of powder particles and the number of hollow powder particles in the image After calculation, the hollow powder rate of this batch of powder samples was obtained. 4.2 Industrial computed tomography (CT) method Using an industrial computer tomography (CT) system, the tomography of the metal powder is performed to obtain a two-dimensional tomographic image of the powder. 3D reconstruction software, reconstruct the three-dimensional image of powder particles, and count the total number of powder particles and hollow powder particles in the two-dimensional or three-dimensional image. The number of grains was calculated, and the hollow powder rate of the batch of powder samples was calculated. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 41978-2022_English be delivered?

Answer: Upon your order, we will start to translate GB/T 41978-2022_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 41978-2022_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 41978-2022_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.