This standard specifies the requirements, test methods, inspection rules, packaging, marking, transportation and storage of refined aluminum ingots for remelting. This standard applies to refined aluminum ingots for remelting produced by three-layer liquid electrolysis. GB/T 8644-2000 Remelting refined aluminum ingots GB/T8644-2000 Standard download decompression password: www.bzxz.net

GB/T8644—2000
This standard is a revision of the national standard GB/T8644-1988 "Refined Aluminum Ingots for Remelting". This revision is based on the original standard, with reference to the German standard DIN1712:1976 and the Japanese standard JISH2111:1968 (confirmed in 1977), combined with the actual production situation of Chinese enterprises, and fully considering the opinions of major users and meeting the requirements of users for the quality of refined aluminum ingots. The main contents of the standard revision are as follows:
① Cancel the A199.995 brand and replace it with the two brands A199.996 and A199.993, and the other brands remain unchanged. ② The content of the main impurities Fe, Si, and Cu is adjusted. This standard will replace GB/T8644-1988 from the date of implementation. This standard was proposed by the State Bureau of Nonferrous Metals Industry. This standard is under the jurisdiction of the China Nonferrous Metals Industry Standard Metrology and Quality Research Institute. This standard was drafted by Guizhou Aluminum Factory.
The main drafters of this standard are Wang Youlai, Li Jiwu, Liu Weidong, Yang Deguang, Gao Yanzhi and Li Qiusheng. 273
National Standard of the People's Republic of China
Refined aluminum ingot for remelting
Refined aluminum ingot for remeltingGB/T 8644 2000
Replaces GR/T8644--1988
This standard specifies the requirements, test methods, inspection rules and packaging, marking, transportation and storage of refined aluminum ingots for remelting. This standard applies to refined aluminum ingots for remelting produced by three-layer liquid electrolysis. 2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T6987.1~6987.21—1986 Chemical analysis methods for aluminum and aluminum alloys GB/T6987.22-6987.23-1987 Chemical analysis methods for aluminum and aluminum alloys GB/T6987.24—1988 Chemical analysis methods for aluminum and aluminum alloys GB/T7999--1987 Photoelectric spectroscopic analysis methods for aluminum and aluminum alloys GB/T8170-1987 Rules for rounding off values ​​
Y13/T 025--1992
3 Requirements
3.1 Brand
Steel strip for packaging
Refined aluminum ingots for remelting are divided into four brands: A199.996, A199.993, A199.99, and A199.95. 3.2 Overall dimensions, weight and allowable deviation
The overall dimensions, weight and allowable deviation of refined aluminum ingots for remelting shall comply with the provisions of Table 1. Table 1
Overall dimensions, mm
Allowable deviation of overall dimensions, mm
Weight, kg
Allowable deviation of weight, kg
The shape of refined aluminum ingots for remelting (front view, top view, side view) is shown in Figure 1. Approved by the State Administration of Quality and Technical Supervision on June 9, 2000 274wwW.bzxz.Net
Implemented on November 1, 2000
3.3 Appearance
GB/T8644—2000
Fine aluminum ingots should be free of slag, cracks and flash. Casting cooling concave surfaces are allowed. 3.4 Chemical composition
The chemical composition of refined aluminum ingots for remelting should comply with the provisions of Table 2. Table 2
Not less than
Chemical composition, %
Not more than
The aluminum content is calculated as the difference between 100% and the sum of the contents of impurities Fe, Si, Cu, Ti, Zn (percentage). 135
Other impurities Each
Other impurity elements not listed in the table can be negotiated by the supply and demand parties if the purchaser has special requirements. 2
The rounding comparison method is adopted for the determination of the analysis value. The numerical rounding rules are carried out in accordance with the relevant provisions of Chapter 3 of GB/T8170. The rounding digits are consistent with the limit digits listed in the table 3
|4 Test method
4.1 Arbitration analysis method of chemical composition
The chemical composition analysis method of refined aluminum ingots for remelting can be carried out in accordance with the provisions of GB/T6987.1~6987.24 or GB/T7999. The arbitration analysis method of chemical composition is carried out in accordance with the provisions of GB/T6987.1~6987.24. 4.2 Surface quality inspection method
The surface appearance quality of refined aluminum ingots for remelting is visually inspected. 5 Inspection rules
5.1 Inspection and acceptance
5.1.1 The refined aluminum ingots for remelting shall be inspected by the supplier's technical supervision department to ensure that the product quality meets the requirements of this standard and fill in the quality certificate. 5.1.2 The buyer shall inspect the received products in accordance with the provisions of this standard. If the inspection results do not meet the requirements of this standard, the buyer shall submit the matter to the supplier within 3 months from the date of receipt of the product, and the supplier and buyer shall negotiate to resolve the issue. If necessary, the first party shall conduct arbitration, and the sampling for arbitration shall be conducted jointly by the supplier and buyer.
5.2 Batch
GB/T 8644--2000
Products shall be submitted for inspection in batches, and each batch shall consist of products from the same smelting furnace number, with a quantity of not less than 10 pieces (100kg). 5.3 Chemical Composition Arbitration Sampling Location and Sampling Quantity Regulations 5.3.1 In each batch of products, select a sample ingot and use the drilling method to sample. When drilling, use a drill bit with a diameter of 12~20mm (no lubricating oil is allowed, ethanol can be used as a lubricant) to drill 4 holes along the two diagonal lines of the sample ingot, 100mm away from the top corner. As shown in Figure 2. Before drilling, the surface layer of the drilling point must be removed, and its thickness must not be less than 2mm. The drilling depth should not be less than two-thirds of the thickness of the aluminum ingot, and the thickness of the sample lead chips should not be greater than 1 mm.
Figure 2 Sampling Drilling Diagram
5.3.2 The drilled aluminum chip samples should be carefully mixed, treated with a magnet, and then reduced to 100g by the quartering method as laboratory samples. 5.4 Inspection Result Determination
5.4.1 If the chemical composition arbitration analysis results do not meet the original brand regulations, the brand shall be re-determined according to the arbitration analysis results. 5.4.2 If the surface appearance quality is unqualified, it shall be treated as unqualified. 6 Marking, packaging, transportation and storage
6.1 Marking
6.1.1 The manufacturer's logo, smelting number and inspection stamp shall be cast or printed on each piece of refined aluminum ingot for remelting. 6.1.2 Each brand of refined aluminum ingot for remelting shall have a distinct color mark that is not easy to fall off. The marking regulations are as follows: Al99.996-one blue horizontal line
A199.993Two blue horizontal lines
6.2 Packaging
One blue vertical line
Two blue vertical lines
6.2.1 The stacking shall be neat.
6.2.2 The bundling form of refined aluminum ingot for remelting shall be in the shape of "#". 6.2.3 The steel belt for bundling refined aluminum ingot for remelting shall comply with the provisions of YB/T025. 6.3 Transportation
Refined aluminum ingots for remelting should be shipped in clean trucks. 6.4 Storage
Products should be stacked in batches and should not be contaminated.
6.5 Quality Certificate
Each batch of refined aluminum ingots for remelting should be accompanied by a quality certificate, indicating: a) Name of supplier;
b) Product name:
c) Product brand;
d) Specification;
e) Batch number;:
f) Net weight and number of pieces;
g) Analysis results and stamp of the technical supervision department; h) Number of this standard;
i) Ex-factory date (or packaging date).
Contents of order form (or contract)
GB/T8644-2000
The order form for refined aluminum ingots for remelting should include the following contents: 7.1 Product name.
7.2 Brand.
7.3 Weight.
7.4 Number of this standard (including year).
5 Others.
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