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GB/T 35472.7-2017 English PDF

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US$119.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 35472.7-2017: Test method for friction element of wet automatic transmission -- Part 7: Band friction test procedure
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 35472.7-2017	119	Add to Cart	3 days	Test method for friction element of wet automatic transmission -- Part 7: Band friction test procedure	Valid

Similar standards

GB/T 37208 GB/T 37224 GB/T 34007 GB/T 35472.3 GB/T 35472.4 GB/T 35472.2

Basic data

Standard ID: GB/T 35472.7-2017 (GB/T35472.7-2017)
Description (Translated English): Test method for friction element of wet automatic transmission -- Part 7: Band friction test procedure
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: Q69
Classification of International Standard: 43.040.40
Word Count Estimation: 6,624
Date of Issue: 2017-12-29
Date of Implementation: 2018-11-01
Regulation (derived from): National Standards Bulletin 2017 No. 32
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China

GB/T 35472.7-2017: Test method for friction element of wet automatic transmission -- Part 7: Band friction test procedure

---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.
Test method for friction element of wet automatic transmission - Part 7. Band friction test procedure ICS 43.040.40 Q69 National Standards of People's Republic of China Wet Automatic Transmission Friction Elements Test Method Part 7. Belt friction test methods Part 7.Bandfrictiontestprocedure 2017-12-29 Posted 2018-11-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB/T 35472 "wet automatic transmission friction element test method" is divided into the following seven sections. --- Part 1. Terms and definitions; --- Part 2. SZBL friction test machine use guide; --- Part 3. Low speed power increment test method; --- Part 4. High-speed power increment test method; --- Part 5. Durability test methods; --- Part 6. Test methods for the relationship between friction performance and pressure, speed and temperature; --- Part 7. Belt friction test method. This section GB/T 35472 Part 7. This section drafted in accordance with GB/T 1.1-2009 given rules. This part is proposed by China Building Materials Federation. This part of the National Non-metallic Mineral Products and Products Standardization Technical Committee (SAC/TC406) centralized. This part of the drafting unit. Hangzhou Zhenxing friction Materials Co., Ltd., Xianyang non-metallic mineral research and Design Institute Co., Ltd., Wang Cheng Chongqing Branch Technology Co., Ltd., Northwestern Polytechnical University. The main drafters of this section. Han Yi Li, Du Ming, Shi Zhigang, Zhu Mianpeng, Cheng Jing, Wen Jia Yu, Shao Yue Song, Fu Ye Wei. Wet Automatic Transmission Friction Elements Test Method Part 7. Belt friction test methods

1 Scope

This section GB/T 35472 specifies the use of SZBL friction test machine wet friction test friction belt components Preparation, typical test conditions and parameters, test procedures. This section applies to the measurement and evaluation of friction in the wet automatic gearbox friction element performance is also suitable for testing its Durability.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 35472.2 wet automatic gearbox friction element test methods - Part 2 .SZBL friction test machine use guide

3 test equipment

The test equipment is a SZBL type friction tester with static engagement device. Its performance and accuracy should be consistent with the provisions of GB/T 35472.2. The inertia configuration is 0.1kg · m2 ~ 0.7kg · m2. Should also be equipped with suitable test drums, struts and bearings.

4 typical test conditions and test parameters

4.1 Piston area of 7000mm2 ~ 14000mm2. 4.2 Piston effective stroke 11.0mm. 4.3 The effect pressure reaches 900 (1 ± 0.5%) kPa. 4.4 pressure rise rate of 2.0MPa/s ~ 3.0MPa/s. 4.5 The piston should provide back pressure 30kPa ~ 40kPa pressure, and clear the load pressure relief is completed. 4.6 The total inertia range of 0.1kg · m2 ~ 0.7kg · m2. 4.7 dynamic bonding speed 1000r/min ~ 10000r/min. 4.8 kinetic energy of 30kJ ~ 50kJ. 4.9 Static bonding speed of 0r/min ~ 4.5r/min. 4.10 refueling volume is 0.6L ~ 2.0L. 4.11 test oil temperature at 80 ℃ ~ 150 ℃, oil temperature control error ± 3 ℃. 4.12 with interface clearance of 0.20mm ~ 0.45mm. 4.13 In the friction test, a series of processes such as the sliding period, the pressurization period and the cooling period repeatedly occurred when the oil temperature is stable and reached the required speed are One cycle. One cycle may include waiting periods, wetting periods, and static mating periods when performing static tests. 4.14 10 times to 50000 cycles or according to the test requirements, the entire cycle of friction coefficient requirements stable. 4.15 chamber pressure is not greater than 15kPa. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 35472.7-2017_English be delivered?

Answer: Upon your order, we will start to translate GB/T 35472.7-2017_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 35472.7-2017_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 35472.7-2017_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.