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GB/T 6839-2013: Testing method for lubrication of sewing threads
Status: Valid GB/T 6839: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 6839-2013 | English | 169 |
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3 days [Need to translate]
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Testing method for lubrication of sewing threads
| Valid |
GB/T 6839-2013
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| GB/T 6839-1986 | English | 199 |
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2 days [Need to translate]
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Testing method for lubrication of sewing thread
| Obsolete |
GB/T 6839-1986
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PDF similar to GB/T 6839-2013
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| W58 | | Classification of International Standard | 59.080 | | Word Count Estimation | 7,767 | | Older Standard (superseded by this standard) | GB/T 6839-1986 | | Quoted Standard | GB/T 6529 | | Regulation (derived from) | National Standards Bulletin No. 22 of 2013 | | Issuing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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