JB/T 8134-1997 JB/T 8134-1997 Aluminum-magnesium-silicon alloy round wire for overhead stranded conductors JB/T8134-1997 Standard download decompression password: www.bzxz.net

Mechanical Industry Standard of the People's Republic of China
JB/T8134bzxZ.net
1997-07-25
JB/T81341997
This standard is equivalent to the International Electrotechnical Commission (IEC) standard, IEC104:1987 "Aluminum-silicon alloy round wire for overhead stranded wire" and amends JB/T8131-95. This standard is applicable to the aluminum-containing wire for the manufacture of overhead stranded wire and is the basic component standard for overhead stranded wire products.
is equivalent to IEC104, 1987. This standard modifies the diameter model of aluminum alloy round wire, resistivity at 20℃, tensile strength at break and elongation at break in the previous version of the standard, cancels the provisions on alloy component ratio and "value" in the previous version of the standard, adds provisions on finished aluminum alloy round wire joints and finished product winding test, because GR/T3048.2-94 is equivalent to IEC468.1974; GF4909.3-85 is equivalent to IS OR956:1.969 is now incorporated into [ISO6892:1984)/GB4909.7 and is equivalent to IS0R958 (now incorporated into 1SO7802:1983). This standard quotes the national standards GB/T3048.2-94 Test methods for electrical properties of wires and cables, test on resistivity of metallic conductor materials, GB4905.3-85 Test methods for bare wires, tensile test, GB 4909.7-85
Test methods for bare wires, winding test
In addition to overhead stranded wires, there are also a variety of wire and cable products that use aluminum alloy wires with various composition combinations and different performance requirements. As the basic components of wire and cable products, these aluminum alloy wires should be modeled according to a unified principle to form a complete series. Therefore, this standard supplements "Appendix A Method for Representing Models of Aluminum Alloy Round Wires for Overhead Stranded Wires". This standard shall replace JB/T8134-95 from the date of implementation. Appendix A of this standard is a suggestive appendix.
This standard was proposed by the Ministry of Machinery Industry.
This standard is under the jurisdiction of the National Technical Committee for Standardization of Electric Wires and Cables. The drafting unit of this standard is Shanghai Cable Research Institute of the Ministry of Machinery Industry. The main drafters of this standard are Xu Aihua and Li Wenhao. This standard was first issued as a national standard in 1987: CB7893--87+. After the standard was cleaned up and rectified, it was adjusted to a machinery industry standard and the number was changed to J3/T8134-95.
JB/T8134-1997
1.1EC (International Electrotechnical Commission) Formal resolutions or agreements made by the Technical Committee on behalf of the National Committee and for technical issues of particular concern to the National Committees, as far as possible, to express international consensus on these issues. 2. These resolutions or agreements are in the form of recommended standards for international use and are recognized by the relevant national committees in this sense. 3. In order to promote international unification, IEC hopes that national committees will adopt the contents of EC recommended standards as their national standards as far as possible within the scope permitted by their domestic conditions. Any differences between IEC recommended standards and corresponding national standards should be clearly stated in the national standards as far as possible.
This standard was revised by IEC Technical Committee No. 1: "Bare wire". This publication is the first edition of IEC 104. It replaces the first edition of 1958. This international standard replaces the requirements of Chapters 3, 5, 6 and 13 of IEC 20 (1966) "Aluminum alloy grade wire (aluminum-magnesium-silicon part)" and Chapter 1, Chapter 12 and Article 8.1. It also replaces the requirements of Chapter 3, 6, 15, 7.1 and Chapter 5, 9.1, 13.2 and 13.3 of IEC210 (1996) publication "Steel Core Lead Alloy Stranded Wire". The text of this standard is based on the following documents: June 2007
7cC03429
Detailed information is listed in the table above. This standard references the following IEC publications:
IEC Publication 458 (1974): Measurement of the resistivity of metallic materials Other publications cited:
ISO Standard 6892 (1984) Tensile strength of metallic materials Test ISO standard 7802 (1983) Metal wire material - Winding test I
Voting report
7(CO)423
1 Scope
JB/T81341997
JB/T81341995
This international standard is applicable to two types of regulated-magnesium-metal wire with different mechanical properties and electrical properties, used for the production of overhead transmission line. It also specifies the mechanical and electrical properties of lead-magnesium-silicon alloy wire with a diameter range of 1.50mm to 4.50mm. The two types are T,HA1 Type and LA2 1) Calculation values ​​for lead-magnesium-silicon alloy wire
When calculating, the following values ​​for aluminum-silicon alloy wire that conforms to this standard should be used: LHA1
Resistivity at 2°C, maximum value (n2.m) Density at 2°C (kg/dm2)
Wire expansion coefficient (1/°C)
Electromagnetic conductivity at 2°C (1/%) 3 Tree material
23×10-5
LHA2 type
32. 530: *
23×10 6
The alloy wire should be made of heat-treated lead-magnesium-silicon alloy, and its composition should be compatible with the mechanical and electrical properties of Type LHA1 and Type HA2, respectively.
4 Surface quality
The surface of the alloy wire should be smooth and should not have any defects that are inconsistent with good products. 5 Diameter and diameter tolerance
The nominal diameter of the alloy wire () is accurate to two decimal places. The difference between each measurement of the alloy wire diameter and the nominal value should not be less than the following values; the nominal diameter d
is equivalent to 52.5% 1A5 (International Acoustic System Standard) and is equivalent to 53.0% IACS.
Note for use instructions:
IECI04 publication The models to be filled in are point type and type B. In order to coordinate with the model display method of various types of alloy wires used in other chemical wire and electrical products and form a series, this standard adopts the model guide compiled according to the method of Appendix A. Key
1997-07-25 Tube
1997-10-01 Small cable
JB/T81341997
To check whether the diameter of the alloy wire meets the above requirements, the diameter should be measured twice in the same cross section and in perpendicular directions. 6 Length and length error
The nominal length of each circle or coil of alloy wire and its error should be determined by negotiation between the supply and demand parties. 7 Joints
The alloy wire is allowed to have joints before drawing the finished product mold after laser. However, if all of the following cases are met, the finished alloy wire is also allowed to have a joint:
a) The weight of the coiled alloy wire is 500kg and above
b) The number of joints in the coiled alloy wire does not exceed 1 t) The number of coiled alloy wires containing 1 joint shall not exceed 10% of the total coil efficiency) When the user requires, the manufacturer shall provide a certificate indicating that the tensile strength of the joint is not less than 130MPa. Finished alloy wires containing 1 joint shall be clearly marked. 8. The test specimens specified in
10. and 11 shall be taken by the manufacturer from 10% of the individual wire segments of any batch of delivered alloy wires. Or when a quality assurance procedure is adopted, the sampling ratio shall be determined by negotiation between the supplier and the buyer. 9 Test location
Unless otherwise agreed upon by both parties at the time of ordering, all tests shall be conducted in the manufacturer. 10 Mechanical properties test
10.1 Tensile and elongation test
According to the sampling method specified in 8, a test piece shall be cut from each test piece and the tensile test shall be conducted in accordance with the provisions of CB4009.3. The moving speed of the tensile testing machine shall not be less than 25mm/min nor greater than 100mm/min. When measuring elongation, the inter-spacing length of the test piece is 250mml.
The tensile strength and elongation at break shall not be less than the corresponding values ​​specified in Table 1. Table 1 Mechanical properties of alloy wire LIA1 type Nominal diameter Tensile strength at break Minimum value 25 mm gauge Elongation at break Minimum value LHA2 type Tensile strength at break Minimum value 250 mm gauge Elongation at break Minimum value 10.2 Winding test According to the sampling method specified in 8, a test piece is cut from each sample and the test piece is tested according to GB4900.7. Winding test is carried out according to the provisions of 8. At a speed not exceeding 601/min, the alloy wire is wound 8 times on a mandrel with the same diameter as the alloy wire, and the alloy wire should not break. 11 Resistivity test
According to the sampling method specified in 8, a test piece is cut from each sample, and its resistivity is measured according to the routine test method specified in CB/3048.2. The resistivity of HA type alloy at 20℃ should not be greater than 32.840ng·m, and the resistivity of LHA2 type gold-containing wire at 20℃ should not be greater than 32.530 nQ-m.
Certificate of conformity
JB/T8134
The manufacturer shall provide a certificate of conformity. If the user requires, 1. List the results of all tests conducted on the sample. 3
Al code
Standard 1.1 Category code
Aluminum alloy round wire for overhead wire+
A1.2 Series code
Commercial strength series...
Heat-resistant series
High strength heat-resistant series.
High strength commercial conductive series*
Drip-resistant series
1.3 Performance code
Aluminum alloy round wire for overhead stranded wireModel representation methodH
The performance code is represented by a single-digit Arabic numeral, arranged in sequence starting from 1Product representation method
The product is represented by model, nominal diameter and standard number. 42. Product model correction
The group and arrangement order of the product number are as follows:
Energy code
Series code
Category code
A2.2 Product representation example
For example: High-strength aluminum-magnesium-silicon alloy round wire for overhead stranded wire with a nominal diameter of 2.C0mm1 and a main resistance of 2.5%1A: Representation
1.HA12.C mnJB/T 8134--1907.
Shu Yingjia
Lai880b1230
19XXXX Ridge
100044
Wan DuanX/X
Zhang JuXXX,XXX
19XX CollectionXX Cabin
X is flounder
German pxXX.XX Wing
Xian Ji Lotus Snapper
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