Aluminum Strips Roll for Battery

Aluminum Strips Roll for Battery

STANDARD

This standard specifies requirements for aluminum strips/sheets, test methods, inspection rules and signs, packaging, transportation, storage, and purchase order (or contract) content, etc.

2. Normative references

The clauses in the following documents become clauses of this standard after being quoted in this standard. For dated reference documents, all subsequent amendments (excluding errata content) or revisions do not apply to this standard. However, all parties that have reached an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version is applicable to this standard.

GB/T3880.1-2006 General Industrial Aluminum and Aluminum Alloy Plates and Strips Part 1: General requirements

GB/T3880.2-2006 General industrial aluminum and aluminum alloy plates and strips Part 2: Mechanical properties

GB/T3880.3-2006 General industrial aluminum and aluminum alloy plates and strips Part 3: Dimensional deviation

GB/T 3198-2003 Aluminum and aluminum alloy foil

GB/T 8888 Packaging, marking, transportation and storage of heavy non-ferrous metal processing products

GB/T 3190-1996 Chemical composition of wrought aluminum and aluminum alloy

3. Requirements

3.1 Product Classification

3.1.1 Brand, status and specification

The grade, state and specification of the strip should meet the requirements of Table 1.

Table 1 Grades, Status and Specifications

3.2 Chemical composition

The chemical composition of the strip should meet the requirements of GB/T 3190-1996

3.3 Dimensions and allowable deviation

3.3.1 The thickness of aluminum material and its allowable deviation shall meet the requirements of Table 2.

Table 2 The thickness of aluminum and its allowable deviation(Unit is mm)

3.4 Mechanical properties

When requested by the user and specified in the contract, the strip should be subjected to mechanical performance tests, and the mechanical properties of the strip should meet the requirements of Table 3.

Table 3 Mechanical properties of strip

3.5 Repeated bending test

The results of the repeated bending test of the strip should meet the requirements of Table 4.

Table 4 Repeated bending test

3.6 Strip hardness

The hardness of the strip should meet the requirements of Table 5.

Table 5 Hardness performance of strip

3.7 Surface quality

3.7.1 The surface of the strip should be smooth and clean, and no delamination, cracks, peeling, air bubbles, thorns, creasing and inclusions are allowed.

3.7.2 The surface of the strip is allowed to have minor defects such as local scratches, spots, pits, indentations, roll marks, and grinding marks that do not cause the thickness of the strip to exceed the allowable deviation.

3.7.3 Slight waves, darkening and local slight oil stains on the surface of the strip shall not be used as the basis for scrapping.

4.Test method

4.1 The arbitration analysis method of the chemical composition of the strip shall be carried out according to GB/T 3190-1996 or other methods agreed between the supplier and the buyer.

4.2 The hardness performance test of the strip is carried out according to GB/T4340.1-1999.

4.3 The outer dimensions of the strip are measured with corresponding precision measuring tools.

4.4 The surface quality of the strip is inspected visually.

4.5 Repeated bending test method for strips Use a vernier caliper to clamp the aluminum strip and bend it back and forth, and record the number of strips broken.

5.Inspection rules

5.1 Inspection and acceptance

5.1.1 The strip should be inspected by the supplier’s technical supervision department to ensure that the product quality meets the requirements of this standard, and the quality certificate should be filled in.

5.1.2 The purchaser shall inspect the received products in accordance with the provisions of this standard. If the inspection result is inconsistent with the provisions of this standard and the order contract, it shall be submitted to the supplier in written form and the supplier and the buyer shall negotiate and resolve. Objections related to surface quality and dimensional deviations should be filed within one month from the date of receipt of the product, and objections related to other properties should be filed within three months from the date of receipt of the product. If arbitration is required, arbitration sampling should be conducted jointly by both the supplier and the buyer.

5.2 Batch

Strips should be submitted for inspection in batches, and each batch should be composed of products of the same brand, state and specification, and the batch weight should not exceed 500kg

5.3 Inspection items

Each batch of strips should be subject to chemical composition verification, external dimensions, hardness parameters and surface quality inspections. When required by the buyer and specified in the contract, the strip shall be subject to process performance inspection.

5.4 Sampling

The sampling of strips should meet the requirements of Table 6

Table 6 Sampling regulations

5.5 Judgment of inspection results

5.5.1 When the chemical composition is unqualified, the batch of products shall be deemed unqualified.

5.5.2 When the strip shape deviation, surface quality, and repeated bending test fail, the strip is judged as unqualified.

5.5.3 When a sample is unqualified in the inspection result, another double number of samples should be taken from the batch of products to repeat the test. If the repeated test results are all qualified, the whole batch of products is judged to be qualified. If the repeated test results still have unqualified samples, the batch of products shall be judged as unqualified or all tested, and those qualified shall be delivered in batches.

6. Marking, packaging, transportation and storage

6.1Marking

Each product should be accompanied by a label or tag, which should indicate:

a）Inspection of the supplier's quality control department；

b）Name of manufacturer；

c）Product specifications and status；

d）Product batch number;

e)  Quantity

6.2Marking, packaging, transportation and storage

The marking, packaging, transportation, storage and quality certificate of the product should meet the requirements of GB/T 8888.

6.3 Quality certificate

Each batch of products should be accompanied by a quality certificate with the indication：

a）Name of supplier；

b）Product name；

c）Product brand, specification and status；

d）Net weight；

e）The results of analysis and inspection (verification) and the mark of the quality control department；

f） Factory date, report date

PRODUCT DISPLAY

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