GB/T 40677-2021 English PDF

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GB/T 40677-2021: Miniature heat pipe
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 40677-2021	249	Add to Cart	3 days	Miniature heat pipe	Valid

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Basic data

Standard ID: GB/T 40677-2021 (GB/T40677-2021)
Description (Translated English): Miniature heat pipe
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J75
Word Count Estimation: 13,179
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 40677-2021: Miniature heat pipe

---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.
Miniature heat pipe ICS 27.060.30 J75 National Standards of People's Republic of China Miniature heat pipe Released on 2021-10-11 2022-05-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed by the Ministry of Industry and Information Technology of the People's Republic of China. This standard is under the jurisdiction of the National Semiconductor Device Standardization Technical Committee (SAC/TC78). Drafting organizations of this standard. Jiangsu Hongli Optoelectronics Technology Co., Ltd., Yixing Product Quality and Food Safety Inspection and Testing Center, United Bao (Hefei) Electronic Technology Co., Ltd., Suzhou Keledi Electronics Co., Ltd., Kunshan Guangxing Electronics Co., Ltd. The main drafters of this standard. Lu Wenqing, Zhuge Ling, Lin Weigeng, Wu Zhanhong, Shi Bo, Guo Guangpin, He Zelin, Yang Qiang. Miniature heat pipe

1 Scope

This standard specifies the requirements, inspection methods, inspection rules and delivery preparations for miniature heat pipes. This standard is applicable to the copper water miniature at room temperature with a length not greater than 300mm and a diameter not greater than 10mm used in the electronics industry and other fields. Design, manufacture, inspection and acceptance of heat pipes. Other sizes of heat pipes can be implemented by reference.

2 Normative references

The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article Pieces. For undated reference documents, the latest version (including all amendments) is applicable to this document. GB/T 191 Packaging, storage and transportation pictorial signs GB/T 2423.10-2019 Environmental Test Part 2.Test Method Test Fc. Vibration (Sine) GB/T 2423.22-2012 Environmental Test Part 2.Test Method Test N. Temperature Change GB/T 2828.1-2012 Sampling inspection procedures by attributes Part 1.Batch inspection sampling searched by acceptance quality limit (AQL) plan GB/T 9082.2-2011 Heat pipe with core GB/T 14811-2008 Heat pipe terminology GB/T 14812-2008 Test method for heat transfer performance of heat pipe GB/T 14813-2008 Heat pipe life test method

3 Terms and definitions

The following terms and definitions defined in GB/T 14811-2008 apply to this document. 3.1 It is made by sintering copper powder in the copper tube or adding a certain proportion of water to the capillary structure in the form of copper wire mesh, grooves, etc., and the length is Heat conduction pipes with a diameter of no more than 300mm and a diameter of no more than 10mm. Note. Hereinafter referred to as "heat pipe". 3.2 Non-effective length of heat pipe non-effective length of heat pipe Due to the processing and sealing, the working fluid cannot flow at all in the top area (length) of the heat pipe, and it cannot effectively generate heat exchange. The length of the area. 3.3 Evaporator (zone, section) evaporatingsection A device (zone, section) in which the liquid working medium of the heat pipe absorbs heat and vaporizes into a gaseous state. [GB/T 14811-2008, definition 2.1.5]. 3.4 Condenser (zone, section) condensersection A device (zone, section) in which the gaseous working medium of the heat pipe emits heat and transforms from gaseous to liquid. ......

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