GB/T 30586-2022Copper clad aluminium flat bars (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 30586-2014 "Continuously Casting and Rolled Copper Clad Aluminum Flat Bars and Wires". Compared with GB/T 30586-2014, except for the structure In addition to adjustments and editorial changes, the main technical changes are as follows.

a) Changed "Scope", (see Chapter 1, Chapter 1 of the.2014 edition);

b) Changed the "normative references" (see Chapter 2, Chapter 2 of the.2014 edition);

c) Changed "Terms and Definitions" (see Chapter 3, Chapter 3 of the.2014 edition);

d) Changed the product classification (see 4.1, 4.1 of the.2014 edition);

e) Changed the content of "Dimensional deviation", increased the requirements for length deviation (see 5.2.1), and changed the allowable deviation of fillet radius (see 5.2.3, 4.3.2 of the.2014 edition), the conditions for determining the thickness of the cladding have been changed (see 5.2.5, 4.3.4 of the.2014 edition);

f) changed the density requirements (see 5.3, 4.10 of the.2014 edition);

g) The requirements for mechanical properties at room temperature have been changed, and the requirements for Brinell hardness have been deleted (see 5.4, Table 6, 4.4 and Table 4 of the.2014 edition);

h) Changed the bending performance requirements (see 5.5.1, Appendix B, 4.5.1 and Appendix B of the.2014 edition);

i) Changed the interface bond strength requirements (see 5.7, 4.7 of the.2014 edition);

j) Changed the test method for chemical composition (see 6.1, 5.1 of the.2014 edition);

k) Added the test method for length (see 6.2.1), changed the test method for thickness (see 6.2.2, 5.2.2 of the.2014 edition), changed - Test method for volume ratio of cladding (see 6.2.4, 5.2.4 of the.2014 edition);

l) The test method for density has been changed (see 6.3, 5.9 of the.2014 edition);

m) The test method for interfacial shear strength has been changed (see 6.7, Appendix D, 5.6, Appendix D of the.2014 edition).

1 Scope

This document specifies the product classification, technical requirements, test methods, inspection rules and signs, packaging, transportation, storage, quality Quantity certificate and purchase order (or contract) content.

This document applies to copper-clad aluminum flat rods (hereinafter referred to as "flat rods") used in power transmission, substation, distribution and other systems.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 1423 Test Method for Density of Precious Metals and Their Alloys

GB/T 2317.3 Test methods for electrical fittings - Part 3: Thermal cycle test

GB/T 2900.10 Electrical terminology cable

GB/T 3048.2 Test methods for electrical properties of wires and cables - Part 2: Resistivity test of metallic materials

GB/T 3190 Chemical Composition of Wrought Aluminum and Aluminum Alloys

GB/T 3199 Packaging, marking, transportation and storage of aluminum and aluminum alloy processed products

GB/T 3246.2 Microstructure inspection method of deformed aluminum and aluminum alloy products-Part 2: Low magnification microstructure inspection method

GB/T 4909.6 Test methods for bare wires - Part 6: Bending test unidirectional bending

GB/T 5121 (all parts) Methods for chemical analysis of copper and copper alloys

GB/T 5231 Processed copper and copper alloy grades and chemical composition

GB/T 7999 Aluminum and aluminum alloy photoelectric direct reading emission spectrometry analysis method

GB/T 8005.1 Terms of Aluminum and Aluminum Alloys Part 1: Products and Processing Technology

GB/T 9327 Rated voltage 35kV (Um=40.5kV) and below power cable conductors with crimping and mechanical connection fittings Test methods and requirements

GB/T 16743 Blanking Gap

GB/T 16825.1 Inspection of static uniaxial testing machines Part 1: Inspection and calibration

GB/T 16865 Specimens and methods for tensile testing of deformed aluminum, magnesium and their alloy processed products

GB/T 17432 Sampling method for chemical composition analysis of wrought aluminum and aluminum alloys

GB/T 20975 (all parts) Methods for chemical analysis of aluminium and aluminium alloys

GB/T 22638.1 Test Methods for Aluminum Foil Part 1: Determination of Thickness

YS/T 482 Analysis method of copper and copper alloy Photoemission spectrometry

3 Terms and Definitions

The terms and definitions defined in GB/T 8005.1, GB/T 2900.10 and the following apply to this document.