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This standard specifies the requirements for deformed aluminum and aluminum alloy round ingots, quality control, test methods, inspection rules and signs, packaging, transportation and storage.
This standard applies to deformed aluminum and aluminum alloy round ingot blanks used in extrusion, forging and other processing methods.
2 Normative references
The clauses in the following documents have been adopted as references to this standard. For dated references, all subsequent amendments (not including errata content) or revisions do not apply to this standard, however, the parties are encouraged to reach an agreement based on this standard.
Can you use newer versions of these files? For undated references, the newer version applies to this standard.
GB/T 3 190 deformed aluminum and aluminum alloy chemical composition
GB/T 3 199 Packing, marking, transportation and storage of aluminum and aluminum alloy processing products
GB/T 3 246 (all parts) Test method for microstructure of deformed aluminum and aluminum alloy products
GB/T 6 987 (all parts) Aluminium and aluminium alloys
GB /T 1 7432 Sampling methods for chemical composition analysis of deformed aluminum and aluminum alloys
YS /T 4 89-2005 Fine Grain Aluminum Ingot
YS /T 4 91-2005 Deformed aluminum and aluminum alloy flux
YS /T 4 92-2005 Aluminum and aluminum alloy component additives
YS/T 6 00-2005 Liquid Hydrogen Test Method for Aluminum and Aluminum Alloys
YS /T 6 01-2005 Aluminum alloy melt purification foam ceramic filter plate
3 requirements
3.1 Brand, status, specifications
The grade, status, and specifications of the ingot should meet the requirements of Table 1.
3.2 Chemical composition
The chemical composition of the ingot should conform to GB/D 319. Provisions.
3.3 Size tolerance
Ingot size deviation should meet the requirements of Table 2
4 Low magnification organization
The low magnification of the ingot should meet the requirements of Table 3.
3.5 Microstructure
The homogenized state of the microstructure of the ingot does not allow overheating
3.6 appearance quality
3.6,1 No cracks, air bubbles, and corrosion spots are allowed on the surface of the ingot
3.6.2 For ingots with a diameter of less than 30 mm, the presence of flaws, layers (cold septa), shrinkage holes, etc., with a depth of not more than 1.smm, is permitted. The ingot shall have a diameter of 30mm to 5Omm. The surface shall have a depth of not more than 2. Omm pull marks, layering (cold septa), shrinkage holes and other defects
3.63 Mechanical bruising that has been trimmed and no more than Zmm is allowed, but mechanical bruising should not be more than four.
3.6.4 The surface of the ingot shall not have a metal tumor 1.smm above the surface of the ingot.
3.6.5 The ingot surface should be clean and free of oil.
3.6.6 Flashes and burrs are not allowed on the ingot surface.
4 quality t control
Please refer to Appendix A (informative annex) for the quality control requirements of the ingot production process.
5 test methods
5.1 Chemical Composition Arbitration Analysis Method
The arbitration analysis method for the chemical composition of the ingot shall be performed according to G/BT6987.
5 - 2 Dimensions and Methods
Measure with a precision measuring tool
5.3 Low magnification tissue inspection method
The low-strength tissue test method for ingots shall be conducted in accordance with G/BT 3246.
5.4 Microscopic examination methods
Uniformity of the microstructure of the ingot shall be tested in accordance with the provisions of GB/T 3246.
5.5 appearance quality inspection method
The appearance quality is generally checked by visual inspection. If necessary, grinding can be used to determine the depth of surface defects.
6 Inspection Rules
6. 1 Inspection and Acceptance
6.1.1 The ingot shall be inspected by the supplier's technical department to ensure that the product quality meets the requirements of this standard (or ordering contract) and the quality is filled out.
certificate
6.1.2 The acquirer shall respond to the received product in accordance with the provisions of this standard. When the results of the re-inspection are inconsistent with the provisions of this standard and the ordering contract, they shall be submitted to the supplier in writing and shall be settled through consultation between the supplier and the buyer. The objections that belong to the surface quality and dimensional deviations shall be filed one month from the date of receipt of the product. They are objections of other properties and shall be filed within three months from the date of receipt of the product. If arbitration is required, both the supplier and the buyer should conduct arbitration sampling on the demand side
6.2 Batches
Ingots shall be submitted for acceptance in batches. Each batch shall consist of the same melting, condition and specification.
6.3 Inspection items
Each batch of ingots should be examined for chemical composition, dimensional deviations, low magnification structures, and appearance quality. The homogenized state ingot should also be tested
Micro-organization
6.4 Sampling
Product sampling should meet the requirements of Table 4.
6.5 Determination of test results
6.5. 1 When the chemical composition analysis fails, the batch is disqualified
6.5.2 When the size deviation is unqualified, the single root is judged as unqualified, which can be tested by the supplier one by one, qualified delivery, and unqualified.
6.5.3 When the low magnification tissue inspection fails, the supplier is allowed to re-sample for repeated tests. The sampling method is as follows: For ingots with low defects, cut 400 mm from the head and tail ends, and then cut the low-magnification specimens for repeated tests. Repeated test results are acceptable and can be delivered in batches. If a sample fails, the whole lot is scrapped, or the supplier checks one by one, and the qualified person delivers.
6.5.4 When the microstructure fails, the whole batch is scrapped
6.5.5 When the appearance quality is unqualified, the single root is judged as unqualified, but the supplier is allowed to reprocess the product. The qualified person will deliver the product and the unqualified person will be rejected.
7 signs, packaging, transportation, storage
7. Flying sign
7.1.1 The surface of each ingot is marked with a brand number, melting number, and inspection.
7.1.2 Each bundle of ingots shall be provided with two labels indicating:
a) Inspection by the supplier technical supervision department;
b) product name;
c) brand number;
d) supply status;
e) Melt number.
7,2 Packing, transportation and storage
Ingots are packed in bare pieces, which can also be mutually agreed upon by the supplier and the purchaser and specified in the contract. Transportation and storage in accordance with the provisions of GB/T 3 199.
7.3 Quality CE Statement
Each batch of ingot should meet the quality certificate required by this standard and indicate:
a) supplier name, address, telephone, fax;
b) product name;
c) brand number;
d) supply status;
e) melting number;
f) Specifications;
9) Net weight and number of pieces;
h) The results of various inspections and the mark of the technical supervision department;
i) the standard number;
j) Factory date or packing date.
8 Content of the contract
The contract for the materials listed in this standard should include the following contents:
a) product name;
6) brand;
c) status;
d) size specifications;
e) weight;
f) the standard number;
R) special requirements
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