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GB/T 39332-2020 English PDF

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US$369.00 · In stock
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GB/T 39332-2020: General requirements for the anti-fatigue manufacturing of precision gears
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 39332-2020	369	Add to Cart	4 days	General requirements for the anti-fatigue manufacturing of precision gears	Valid

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Basic data

Standard ID: GB/T 39332-2020 (GB/T39332-2020)
Description (Translated English): General requirements for the anti-fatigue manufacturing of precision gears
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: J17
Classification of International Standard: 21.200
Word Count Estimation: 20,210
Date of Issue: 2020-11-19
Date of Implementation: 2021-06-01
Regulation (derived from): National Standard Announcement No. 26 of 2020
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 39332-2020: General requirements for the anti-fatigue manufacturing of precision gears

---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.
General requirements for the anti-fatigue manufacturing of precision gears ICS 21.200 J17 National Standards of People's Republic of China General technical requirements for anti-fatigue manufacturing of high-precision gears 2020-11-19 released 2021-06-01 implementation State Administration for Market Regulation Issued by the National Standardization Management Committee

Preface Ⅲ Introduction Ⅳ 1 Scope 1 2 Normative references 1 3 Terms and definitions 3 4 Design 4 4.1 Geometric design 4 4.2 Strength calculation 4 4.3 Accuracy determination 4 4.4 Lubrication Design 4 5 Materials and heat treatment 7 5.1 Raw materials 7 5.2 Forgings 8 5.3 Heat treatment 8 6 Machining 8 6.1 Grinding teeth 8 6.2 Grinding burns and grinding cracks 8 6.3 Inspection methods for grinding burns and grinding cracks 8 6.4 Basic requirements of gear grinding process 9 6.5 Avoidance of grinding cracks 10 7 Surface treatment 11 7.1 Shot Peening 11 7.2 Tooth surface smoothing 14 8 Testing and testing 14 8.1 Gear accuracy measurement 14 8.2 Gear device test 14 8.3 Gear flaw detection 15 Reference 16

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard was proposed and managed by the National Gear Standardization Technical Committee (SAC/TC52). Drafting organizations of this standard. Zhengzhou Machinery Research Institute Co., Ltd., Hunan University, Shanghai Jiaotong University, Henan Zhongyu Yuanda Heavy Industry Technology Co., Ltd. Company, Zhengzhou China Railway Transportation Equipment Technology Co., Ltd., Zhengzhou Jiangyu Machinery Co., Ltd., Jiangsu Zhonggong High-end Equipment Research Institute Co., Ltd. Company, CMC Intelligent Equipment Innovation Research Institute (Ningbo) Co., Ltd., Zhengzhou High-end Equipment and Information Industry Technology Research Institute Co., Ltd., Beijing Engineering Industrial University, China National Machinery Productivity Promotion Center, Kunshan Xinpurui Metal Material Co., Ltd. The main drafters of this standard. Wang Wei, Wang Zhigang, Zhou Changjiang, Zhang Kun, Li Haixia, Jiang Chuanhai, Li Jiqiang, Du Changhai, Liu Zhongming, Ding Yinghui, Chen Guomin, Lu Jun, Wang Yingying, Zhang Qinglang, Li Youhua, Wang Changlu, Long Weimin, Shi Zhaoyao, Zhang Jingcai, Zhang Yuanguo, Wang Xinbo, Lu Pangong, Zheng Ming, Gong Yu, Guan Hongjie, Fan Ruili, Ding Jun, Ma Pintian, Zhang Rongfeng.

Introduction

The anti-fatigue manufacturing of gears involves all aspects of gear production. Its meaning can be explained in two ways. one is the given working condition (if known negative To extend the service life of the gear as much as possible under load), and the second is to increase the reliability of gear integrity as much as possible under given conditions (such as set life). How to maximize the production of parameters (including precision) matching, material preparation, heat treatment, machining, surface strengthening, testing and testing, etc. The contribution of section to the fatigue resistance of gear products, gears and other related professionals have done a lot of work. This standard is for these jobs The general summary is to help users of this standard to improve the fatigue resistance of parts in one or several links of the gear manufacturing process Manufacturing level. For some gear manufacturing links that have established national and industry standards (or specifications), this standard will mainly be based or referenced And the specifications are listed for the reference of users of this standard; for some manufacturing links where there is no professional standard for gears, this standard is targeted The recommended technical requirements and operating instructions are given locally. The basic situation is as follows. ---Regarding the geometric design and strength calculation of gears. The geometric and strength design theory of gears originated from foreign countries. At present, my country adopts ISO standard Standard is the main reference specification, involving the terms, geometric elements, and symbol codes of gears (including cylindrical gears, bevel gears, worm gears) The number, tooth profile, strength calculation, etc. have basically formed a standard system. ---About the material of the gear. At present, my country refers to the standards of many countries (or organizations), in terms of chemical composition, hardenability, purity, smelting, and forging Ratio, grain size, surface hardness, core hardness, hardened layer depth, surface carbon content, microstructure, surface cracks, core microstructure There are self-built norms in other areas, and a standard system has basically formed. --- Regarding the precision setting and measurement evaluation of gears. At present, my country has basically formed a standard system with ISO standards as the reference standard. ---Regarding the heat treatment of gears. At present, in addition to referring to ISO standards, my country also implements self-built national and industry standards. Into a standard system. Especially the heat treatment process of hard tooth surface gears, such as carburizing, nitriding, induction hardening standards, has been used for many years Played a significant role. ---About gear test. Gear test is divided into two categories. single gear test (mainly including material structure, mechanical properties, fatigue resistance Force, etc.) and gearbox tests (mainly including meshing, efficiency, noise, vibration, lubrication, life, etc.). In addition to referring to ISO In addition to standards, some projects also implement self-built national and industry standards. ---About gear lubrication. Lubrication is an important aspect of gear design. In addition to quoting some related standards, this standard also Necessary explanations are made on lubrication status, lubrication function, lubricating oil, lubrication system, etc. ---About gear grinding and gear grinding damage. Gear grinding is the most important process in the gear machining process, and gear grinding damage (burns and cracks) may Accompanyingly, this standard has made necessary explanations in terms of detection, evasion and remediation. ---About the surface treatment of gears. Appropriate gear tooth surface treatment technology can help improve gear fatigue resistance. This standard focuses on spraying Pill craft made the necessary instructions. To remind users of this standard. ---The anti-fatigue manufacturing technology of gears is under continuous development. For example, new heat treatment processes have begun to be applied in gear manufacturing. Applications include high-temperature vacuum carburizing, dual-frequency induction heating, laser surface strengthening, ion beam surface strengthening, etc. These new processes will be completed in the future It is possible to form a new standard or specification. ---The human factor is essential in the anti-fatigue manufacturing of gears. Take gear design as an example. this is the basis of gear manufacturing and gear production. The basis for product acceptance, its work is connected to customer needs and manufacturing processes, and there are many issues that need to be considered and balanced, which requires The designer not only understands the specification, but also has rich practical experience. General technical requirements for anti-fatigue manufacturing of high-precision gears

1 Scope

This standard specifies the general technical requirements for important links in the anti-fatigue manufacturing of high-precision gears, including design (including lubrication), materials and thermal Processing, machining, surface treatment, inspection and testing, etc. This standard applies to gears under the following conditions, and other metal gear products can also be used as a reference. ---Modulus. 1mm~40mm; ---Diameter range. 20mm~2000mm; ---Tooth accuracy. not less than level 6 [GB/T 10095 (all parts)].

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 references, the latest version (including all amendments) applies to this document. GB/T 699 High-quality carbon structural steel GB/T 2821 Gear geometry element code GB/T 3077 Alloy structural steel GB/T 3141 ISO viscosity classification of industrial liquid lubricants GB/T 3374 (all parts) Gear terms and definitions GB/T 3480 Involute cylindrical gear load capacity calculation method GB/T 3480.1 Calculation of load carrying capacity of spur gears and helical gears Part 1.Basic principles, overview and general influence coefficients GB/T 3480.5 Calculation of load-bearing capacity of spur gears and helical gears-Part 5.Strength and quality of materials GB/T 3480.6 Calculation of bearing capacity of spur and helical gears Part 6.Calculation of service life under variable load conditions GB/T 3481 Gear teeth wear and damage terms GB 5903 Industrial closed gear oil GB/T 6394 Method for determination of average grain size of metals GB/T 6402 Ultrasonic Testing Method for Steel Forgings GB/T 6404 (all parts) Acceptance specification for gear units GB /Z 6413 (all parts) Cylindrical gear, bevel gear and hypoid gear gluing load capacity calculation method GB/T 7232 Terminology of metal heat treatment process GB/T 7631.7 Classification of lubricants and related products (Class L) Part 7.Group C (Gears) GB/T 8121 Material terminology for heat treatment process GB/T 10062 (all parts) calculation method of bevel gear load capacity GB/T 10063 Simplified calculation method for load carrying capacity of general mechanical involute cylindrical gears GB/T 10087 Basic tooth profile of cylindrical worm GB/T 10089 Accuracy of cylindrical worm and worm gear GB/T 10095 (all parts) cylindrical gear precision system GB/T 10096 rack precision GB 11120 turbine oil ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 39332-2020_English be delivered?

Answer: Upon your order, we will start to translate GB/T 39332-2020_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of GB/T 39332-2020_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 39332-2020_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.