GB/T 33824-2017 Aluminum and aluminum alloys plates, sheets and strips for cans and caps of new energy power batteries
1 Scope
This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage, quality certificate and order (or contract) contents of the aluminum and aluminum alloy plates, sheets and strips for cans and caps of new energy power batteries.
This standard is applicable to aluminum and aluminum alloy plates and sheets (hereinafter referred to as plates and sheets) and aluminum and aluminum alloy strips (hereinafter referred to as strips) for cans and caps of new energy power batteries used in fields such as electric vehicles, electric bicycles, electric energy storage, and communication energy storage.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 3190 Wrought aluminium and aluminium alloy - Chemical composition
GB/T 3199 Wrought aluminium and aluminium alloy products - Packing marking transporting and storing
GB/T 3880.1-2012 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 1: Technical conditions of delivery
GB/T 3880.3-2012 Wrought aluminium and aluminium alloy plates, sheets and strips for general engineering - Part 3: Tolerances on forms and dimensions
GB/T 4156 Metallic materials - Sheet and strip - Erichsen cupping test
GB/T 5125 Method for deep drawing cups testing of non-ferrous metals
GB/T 6417.1 Classification and explanation of imperfections in fusion welded joints
GB/T 7999 Optical emission spectrometric analysis method of aluminum and aluminum alloys
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 16865 Test pieces and method for tensile test for wrought aluminium and magnesium alloys products
GB/T 17432 Methods for sampling for analyzing the chemical composition of wrought aluminum and aluminum alloys
GB/T 19867.4 Welding procedure specification for laser beam welding
GB/T 20975
(All parts) Methods for chemical analysis of aluminium and aluminium alloys
GB/T 22085.2 Electron and laser beam welded joints - Guidance on quality levels for imperfection - Part 2: Aluminium and its weldable alloys
GB/T 30512 Requirements for prohibited substances on automobiles
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
abnormal weld pool
weld pool in a weld that has a penetration or width significantly greater than that of a normal weld pool (see Figure 1)
3.2
occurrence rate of abnormal weld pools
proportion of the total number of abnormal weld pools to the total number of all weld pools in a 100mm-long weld
a) Longitudinal section view of weld b) Plane view of weld
Figure 1 Abnormal weld pool
4 Requirements
4.1 Product classification
4.1.1 Designation, state, dimension & specification and application
The alloy designation, state, dimension & specification and application of products shall meet the requirements of Table 1. The inner diameter and outer diameter of the strips shall be determined by the supplier and the purchaser through negotiation and be indicated in the order (or contract). Other alloy designations, states and dimensions & specifications required by the purchaser shall be determined by the supplier and the purchaser through negotiation and be indicated in the order (or contract).
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
5 Test methods
6 Inspection rules
7 Marking, packaging, transportation, storage and quality certificate
8 Order (or contract) information
Annex A (Normative) Evaluation method for laser welding property
Annex B (Informative) Laser welding test procedure
