JB/T 8987-2017 PDF English
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| JB/T 8987-2017 | English | 150 |
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The specification of AgCu alloy wire (strip) for commutators
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| JB/T 8987-1999 | English | 70 |
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The specification of AgCu alloy wire for commutators
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JB/T 8987-2017: The specification of AgCu alloy wire (strip) for commutators---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/JBT8987-2017
MECHANICAL INDUSTRY STANDARD
ICS 29.120.99
K 14
Registration number. 61109-2018
Replacing JB/T 8987-1999
The specification of AgCu alloy wire (strip) for
commutators
Issued on. NOVEMBER 07, 2017
Implemented on. APRIL 01, 2018
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Product variety and code... 4
4 Technical requirements... 5
4.1 Raw materials... 5
4.2 Appearance... 5
4.3 Dimensions and limit deviation... 6
4.4 Chemical composition, mechanical-physical properties... 7
4.5 Delivery status... 7
5 Test methods... 7
5.1 Appearance... 7
5.2 Dimension... 7
5.3 Chemical composition... 7
5.4 Conductivity... 7
5.5 Density... 8
5.6 Hardness... 8
5.7 Tensile strength and elongation at break... 8
6 Inspection rules... 8
7 Marking, packaging, transportation, storage... 8
7.1 Product’s marking... 8
7.2 Packaging... 9
7.3 Transportation... 9
7.4 Storage... 9
References... 10
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces JB/T 8987-1999 “The specification of AgCu alloy wire
for commutators”. As compared with JB/T 8987-1999, the main technical
changes are as follows.
- INCORPORATE the contents of the silver-copper alloy strip into the
standard; CHANGE the standard name into “The specification of AgCu alloy
wire (strip) for commutators”;
- ADD the product code “TUY-10”.
This standard was proposed by the China Machinery Industry Federation.
This standard shall be under the jurisdiction of the National Electrotechnical
Alloy Standardization Technical Committee (SAC/TC 228).
Responsible drafting organizations of this standard. Anping Feichang Electrical
Alloy Co., Ltd., Wenzhou Hongfeng Electric Alloy Co., Ltd., Fuda Alloy Materials
Co., Ltd.
Participated drafting organizations of this standard. Guilin Electric Science
Research Institute Co., Ltd., Foshan Tongbao Precision Alloy Co., Ltd.,
Wenzhou Zhongxi Electrical Alloy Co., Ltd., Zhejiang Leyin Alloy Co., Ltd.
The main drafters of this standard. Yan Hongcai, Chen Xiao, Xie Yongzhong,
Bai Xiaoping, Zheng Xiaojie, Huo Zhiwen, Zheng Yuanlong, Luo Wei, Wang
Chengchang, Yan Xiaofang.
This standard replaces the standard previously issued as follows.
- JB/T 8987-1999.
The specification of AgCu alloy wire (strip) for
commutators
1 Scope
This standard specifies the product variety and code, technical requirements,
test methods, inspection rules, marking, packaging, transportation, storage of
silver-copper alloy wire (strip).
This standard applies to the production, inspection, acceptance of silver-copper
alloy wire (strip). Silver-copper alloy wire (strip) is used to manufacture silver-
copper commutator. The silver-copper commutator is mainly used in low-power
motors for power tools, household appliances, other industrial appliances.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 228.1 Metallic materials - Tensile testing - Part 1.Method of test at
room temperature
GB/T 4340.1 Metallic materials - Vickers hardness test - Part 1.Test method
GB/T 5121.1 Methods for chemical analysis of copper and copper alloys -
Part 1.Determination of copper content
GB/T 5121.19 Methods for chemical analysis of copper and copper alloys -
Part 19.Determination of silver content
GB/T 5586 Test methods for essential property of electrical contact materials
JB/T 5351-2014 Electric contact material for vacuum switch - Test methods
of essential property
3 Product variety and code
According to the different silver content, the product varieties and product codes
of the silver-copper alloy wire (strip) are as shown in Table 1 and Table 2.
4 Technical requirements
4.1 Raw materials
The raw materials of silver-copper alloy wire (strip) are copper and silver. This
standard recommends the use of No.1 standard copper as specified in GB/T
467-2010 and No.1 silver as specified in GB/T 4135-2016 as raw materials.
4.2 Appearance
4.3 Dimensions and limit deviation
4.3.1 The diameter and limit deviation of silver-copper alloy wire shall comply
with the requirements of Table 3.
4.3.2 The dimensions and limit deviation of the silver-copper alloy strip shall
comply with the requirements of Table 4.
4.4 Chemical composition, mechanical-physical properties
The chemical composition and mechanical-physical properties of the silver-
copper alloy wire (strip) are as specified in Tables 1 and 2, respectively.
5 Test methods
5.1 Appearance
The appearance of silver-copper alloy wire (strip) is visually observed in natural
light.
5.3 Chemical composition
5.3.1 The total content of copper and silver shall be determined in accordance
with the provisions of GB/T 5121.1.
5.3.2 The silver content is determined by atomic absorption spectrophotometry
according to the provisions of GB/T 5121.19.
5.3.3 The oxygen content is determined according to 3.4 of JB/T 5351-2014.It
is sampled from wire blank.
5.4 Conductivity
According to the provisions of 3.3 of JB/T 5351-2014, determine the
conductivity of the silver-copper alloy blank.
5.6 Hardness
The Vickers hardness of the silver-copper alloy wire (strip) is measured
according to the provisions of GB/T 4340.1.
6 Inspection rules
6.1 The supplier’s quality inspection department shall carry out the exit-factory
inspection of the silver-copper alloy wire (strip) products in batches. Fill in the
product quality guarantee and product certificate. The products which are
manufactured by the same batch of raw materials, the same process, and have
the same silver content are called a batch of products.
6.2 For each batch of products, it shall check the appearance, dimension,
hardness one by one.
7 Marking, packaging, transportation, storage
7.1 Product’s marking
7.1.1 Each coil of silver-copper alloy wire (strip) shall be accompanied by a
certificate of conformity. The certificate includes.
7.1.2 Each coil of silver-copper alloy wire (strip) shall be accompanied by a
certificate of conformity. The certificate includes.
7.2 Packaging
Each coil of silver-copper alloy wire (strip) is wrapped by a soft material, to
prevent bumping of the surface of the material.
JB/T 8987-2017
MECHANICAL INDUSTRY STANDARD
ICS 29.120.99
K 14
Registration number. 61109-2018
Replacing JB/T 8987-1999
The specification of AgCu alloy wire (strip) for
commutators
Issued on. NOVEMBER 07, 2017
Implemented on. APRIL 01, 2018
Issued by. Ministry of Industry and Information Technology of PRC
Table of Contents
Foreword... 3
1 Scope... 4
2 Normative references... 4
3 Product variety and code... 4
4 Technical requirements... 5
4.1 Raw materials... 5
4.2 Appearance... 5
4.3 Dimensions and limit deviation... 6
4.4 Chemical composition, mechanical-physical properties... 7
4.5 Delivery status... 7
5 Test methods... 7
5.1 Appearance... 7
5.2 Dimension... 7
5.3 Chemical composition... 7
5.4 Conductivity... 7
5.5 Density... 8
5.6 Hardness... 8
5.7 Tensile strength and elongation at break... 8
6 Inspection rules... 8
7 Marking, packaging, transportation, storage... 8
7.1 Product’s marking... 8
7.2 Packaging... 9
7.3 Transportation... 9
7.4 Storage... 9
References... 10
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces JB/T 8987-1999 “The specification of AgCu alloy wire
for commutators”. As compared with JB/T 8987-1999, the main technical
changes are as follows.
- INCORPORATE the contents of the silver-copper alloy strip into the
standard; CHANGE the standard name into “The specification of AgCu alloy
wire (strip) for commutators”;
- ADD the product code “TUY-10”.
This standard was proposed by the China Machinery Industry Federation.
This standard shall be under the jurisdiction of the National Electrotechnical
Alloy Standardization Technical Committee (SAC/TC 228).
Responsible drafting organizations of this standard. Anping Feichang Electrical
Alloy Co., Ltd., Wenzhou Hongfeng Electric Alloy Co., Ltd., Fuda Alloy Materials
Co., Ltd.
Participated drafting organizations of this standard. Guilin Electric Science
Research Institute Co., Ltd., Foshan Tongbao Precision Alloy Co., Ltd.,
Wenzhou Zhongxi Electrical Alloy Co., Ltd., Zhejiang Leyin Alloy Co., Ltd.
The main drafters of this standard. Yan Hongcai, Chen Xiao, Xie Yongzhong,
Bai Xiaoping, Zheng Xiaojie, Huo Zhiwen, Zheng Yuanlong, Luo Wei, Wang
Chengchang, Yan Xiaofang.
This standard replaces the standard previously issued as follows.
- JB/T 8987-1999.
The specification of AgCu alloy wire (strip) for
commutators
1 Scope
This standard specifies the product variety and code, technical requirements,
test methods, inspection rules, marking, packaging, transportation, storage of
silver-copper alloy wire (strip).
This standard applies to the production, inspection, acceptance of silver-copper
alloy wire (strip). Silver-copper alloy wire (strip) is used to manufacture silver-
copper commutator. The silver-copper commutator is mainly used in low-power
motors for power tools, household appliances, other industrial appliances.
2 Normative references
The following documents are essential to the application of this document. For
the dated documents, only the versions with the dates indicated are applicable
to this document; for the undated documents, only the latest version (including
all the amendments) are applicable to this standard.
GB/T 228.1 Metallic materials - Tensile testing - Part 1.Method of test at
room temperature
GB/T 4340.1 Metallic materials - Vickers hardness test - Part 1.Test method
GB/T 5121.1 Methods for chemical analysis of copper and copper alloys -
Part 1.Determination of copper content
GB/T 5121.19 Methods for chemical analysis of copper and copper alloys -
Part 19.Determination of silver content
GB/T 5586 Test methods for essential property of electrical contact materials
JB/T 5351-2014 Electric contact material for vacuum switch - Test methods
of essential property
3 Product variety and code
According to the different silver content, the product varieties and product codes
of the silver-copper alloy wire (strip) are as shown in Table 1 and Table 2.
4 Technical requirements
4.1 Raw materials
The raw materials of silver-copper alloy wire (strip) are copper and silver. This
standard recommends the use of No.1 standard copper as specified in GB/T
467-2010 and No.1 silver as specified in GB/T 4135-2016 as raw materials.
4.2 Appearance
4.3 Dimensions and limit deviation
4.3.1 The diameter and limit deviation of silver-copper alloy wire shall comply
with the requirements of Table 3.
4.3.2 The dimensions and limit deviation of the silver-copper alloy strip shall
comply with the requirements of Table 4.
4.4 Chemical composition, mechanical-physical properties
The chemical composition and mechanical-physical properties of the silver-
copper alloy wire (strip) are as specified in Tables 1 and 2, respectively.
5 Test methods
5.1 Appearance
The appearance of silver-copper alloy wire (strip) is visually observed in natural
light.
5.3 Chemical composition
5.3.1 The total content of copper and silver shall be determined in accordance
with the provisions of GB/T 5121.1.
5.3.2 The silver content is determined by atomic absorption spectrophotometry
according to the provisions of GB/T 5121.19.
5.3.3 The oxygen content is determined according to 3.4 of JB/T 5351-2014.It
is sampled from wire blank.
5.4 Conductivity
According to the provisions of 3.3 of JB/T 5351-2014, determine the
conductivity of the silver-copper alloy blank.
5.6 Hardness
The Vickers hardness of the silver-copper alloy wire (strip) is measured
according to the provisions of GB/T 4340.1.
6 Inspection rules
6.1 The supplier’s quality inspection department shall carry out the exit-factory
inspection of the silver-copper alloy wire (strip) products in batches. Fill in the
product quality guarantee and product certificate. The products which are
manufactured by the same batch of raw materials, the same process, and have
the same silver content are called a batch of products.
6.2 For each batch of products, it shall check the appearance, dimension,
hardness one by one.
7 Marking, packaging, transportation, storage
7.1 Product’s marking
7.1.1 Each coil of silver-copper alloy wire (strip) shall be accompanied by a
certificate of conformity. The certificate includes.
7.1.2 Each coil of silver-copper alloy wire (strip) shall be accompanied by a
certificate of conformity. The certificate includes.
7.2 Packaging
Each coil of silver-copper alloy wire (strip) is wrapped by a soft material, to
prevent bumping of the surface of the material.
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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