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GB/T 6839-2013 English PDF

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Q: Should I purchase the latest version GB/T 6839-2013?

Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6839-2013 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

US$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email.
GB/T 6839-2013: Testing method for lubrication of sewing threads
Status: Valid

GB/T 6839: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 6839-2013	169	Add to Cart	3 days	Testing method for lubrication of sewing threads	Valid
GB/T 6839-1986	199	Add to Cart	2 days	Testing method for lubrication of sewing thread	Obsolete

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Basic data

Standard ID: GB/T 6839-2013 (GB/T6839-2013)
Description (Translated English): Testing method for lubrication of sewing threads
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: W58
Classification of International Standard: 59.080
Word Count Estimation: 7,767
Older Standard (superseded by this standard): GB/T 6839-1986
Quoted Standard: GB/T 6529
Regulation (derived from): National Standards Bulletin No. 22 of 2013
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
Summary: This standard specifies the methods of measurement of sewing thread and a solid metal contact dynamic friction properties. This standard applies to linear density 10 tex ~ 120 tex, the dynamic friction coefficient of 0. 1 to 0. 5 sewing thread, embroidery

GB/T 6839-2013: Testing method for lubrication of sewing threads

---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.
Testing method for lubrication of sewing threads ICS 59.080 W58 National Standards of People's Republic of China Replacing GB/T 6839-1986 Testing method for lubrication of sewing thread Issued on. 2013-11-12 2014-05-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. This standard replaces GB/T 6839-1986 "Test Method for lubrication of sewing thread", compared with the original standard, in addition to editorial changes, the main technical Surgery changes are as follows. --- Test method has been adjusted to characterize the lubrication of sewing thread through the dynamic friction coefficient; --- Increased sewing thread unwinding speed, wind angle and kinetic friction coefficient calculation method and other content; --- Requirements detecting device has been described. The standard proposed by China Textile Industry Association. This standard by the National Standardization Technical Committee home textiles line with the Technical Committee (SAC/TC302/SC2) centralized. This standard was drafted. US-Industry Co., Hujiang Line Co., Ltd., Shanghai textile industry technical supervision, the new Zhejiang Jinghong Material Technology Co., Ltd., Zhejiang and Shanghai Co., Ltd., Jiangsu line. The main drafters of this standard. Xide Chang, Tang Yinghua, Wang Jing Yi, Shaozai Liang, Shi Jianmin, He Meidi, Chen Qian. This standard replaces the standards previously issued as follows. --- GB/T 6839-1986. Testing method for lubrication of sewing thread

1 Scope

This standard specifies the method for measuring sewing thread with a solid metal contact dynamic friction properties. This standard applies to linear density 10tex ~ 120tex, dynamic friction coefficient of 0.1 to 0.5 sewing thread, embroidery thread or more than norm Around the sewing thread can refer to the use of the product.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 6529 Textiles Standard conditioning and testing atmosphere

3 Terms and Definitions

The following terms and definitions apply to this document. 3.1 Friction coefficient coefficientoffriction To prevent relative movement of the two entities in the friction of two objects to force the contact surface ratio law. 3.2 Dynamic friction dynamicfriction The relative movement of the friction between the two surfaces. 3.3 Wind angle wrapangle Among the yarn friction test, the test sample and cumulative exposure angle of friction between devices, in radians. Principle 4 The sewing thread around the friction bar (winding angle α), the yarn in the yarn were measured input yarn tension (t1) and an output Tension (t2), based on α, t1, t2 can be calculated yarn dynamic friction coefficient μ, and characterized by sewing size variation coefficient of dynamic friction and coefficient Line lubrication is good or bad.

5 device

Means member consists of. a) detecting means, means are. --- Yarn tension control input; --- The guide roller and a tension measuring head; --- Friction rod (diameter 12.7mm, roughness of 4μm ~ 6μm chrome surface), the use of friction material rod, big ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of GB/T 6839-2013_English be delivered?

Answer: Upon your order, we will start to translate GB/T 6839-2013_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 6839-2013_English with my colleagues?

Answer: Yes. The purchased PDF of GB/T 6839-2013_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.

Question 5: Should I purchase the latest version GB/T 6839-2013?

Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version GB/T 6839-2013 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.