This standard specifies the quality requirements for aluminum alloy profiles. This standard applies to aluminum alloy profiles for travel luggage and other decorative purposes. QB/T 1586.4-1992 Aluminum alloy profiles for luggage hardware accessories boxes QB/T1586.4-1992 Standard download decompression password: www.bzxz.net

Light Industry Standard of the People's Republic of China bZxz.net
Luggage Hardware Accessories
Aluminum Alloy Profiles for Luggage
1 Subject Content and Scope of Application
This standard specifies the quality requirements for aluminum alloy profiles. This standard applies to travel suitcases and other decorative aluminum alloy profiles. 2 Reference standards
GB/T228 Metal tensile test method
GB/T3190 Chemical composition of aluminum and aluminum alloy processed products GB/T3199 Packaging, marking, transportation and storage of aluminum and aluminum alloy processed products GB/T3246
GB/T 3247
Microstructure inspection method of aluminum and aluminum alloy processed products Macrostructure inspection method of aluminum and aluminum alloy processed products: Industrial aluminum and aluminum alloy hot extrusion profiles GB/T 6892
GB/T6987.1~6987.23 Chemical analysis method of aluminum alloy 3 Product classification
3.1 Brand, state and specification
3.1.1 The alloy brand, state and specification of the profile shall comply with the provisions of Table 1. Table 1
Alloy grade
Supply status
R (hot extrusion)
QB/T 1586.4—1992
According to the drawings agreed by both parties
Note: According to the requirements of the buyer, profiles of other grades listed in the national standards can also be provided. 3.1.2 Profiles are divided into ordinary precision profiles and high precision profiles according to their dimensional accuracy. High precision profiles must be indicated in the contract and the drawings agreed by both parties. Those not indicated are supplied as ordinary precision profiles. 3.2 Dimensions and allowable deviations
3.2.1 The cross-sectional dimensions of the profiles shall comply with the technical drawings signed by both parties. 3.2.2 The allowable deviation of the cross-sectional dimensions of the profiles shall comply with the provisions of Tables 2 and 3 in GB/T6892 or as agreed by both parties. 3.2.3 The length of the profiles can be supplied in irregular length, fixed length or multiple lengths, and the length range is 1 to 3m. If the length of the profile is greater than 3m, it can be provided after the agreement between the two parties is stated in the contract. 3.2.4 The allowable deviation of the length of the fixed (multiple) size profile is + 20mm, and the cut margin should be added at the same time, and each cut is 5mm. 3.2.5 The end face of the profile should be cut flat, and the cutting slope should not exceed 5°. 3.2.6 The twisting degree of the profile should comply with the provisions of GB/T6892. 3.2.7 The longitudinal bending of the profile should comply with the provisions of GB/T6892. Approved by the Ministry of Light Industry of the People's Republic of China on August 31, 1992, and implemented on April 1, 1993. 4 Technical requirements 4.1 Chemical composition QB/T1586.4--1992 The chemical composition of the profile should comply with the provisions of Table 2. Table 2
Alloy grade
Magnesium (Mg)
Cadmium (Cu)
Chemical composition, %
Iron (Fe)
Silicon (Si)
Titanium (Ti)
Note: If the purchaser requires profiles of grades listed in national standards, their chemical composition shall comply with the provisions of GB/T3190. 4.2 Mechanical properties
The room temperature longitudinal mechanical properties of profiles shall comply with the provisions of Table 3. Table 3
Alloy grade
4.3 Macrostructure
Tensile strength, N/mm2
≤210
Mechanical properties
Other impurities
Elongation, %
Aluminum (AI)
The macrostructure of profiles is not allowed to have cracks, shrinkage tails and slag inclusions. Slight stratification is allowed, not exceeding the allowable depth of surface defects. 4.4 Microstructure
The microstructure of the profile is not allowed to be overburned. 4.5 Surface quality
4.5.1 The decorative surface of the decorative profile must be indicated on the drawing. 4.5.1.1 The decorative surface of the profile is not allowed to have corrosion spots, cracks and non-metallic embossing figures. Peeling, bubbles, surface roughness and local mechanical damage with a depth not exceeding 8% of the nominal wall thickness are allowed, but the maximum depth should not exceed 0.25mm. No matter what kind of defects, they should not appear continuously and there should be no more than 2 per square centimeter. 4.5.1.2 The non-decorative surface of the profile is allowed to have peeling, bubbles, surface roughness and local mechanical damage with a depth not exceeding 15% of the nominal wall thickness, but the maximum depth should not exceed 0.5mm. 4.5.2 The profile is allowed to have oxidation color, non-rough white and dark spots. 4.5.3 The profile surface is allowed to be repaired along the longitudinal direction until it becomes a smooth surface. 5 Test methods
5.1 Chemical composition
The chemical composition of the profile shall be in accordance with GB/T6987.1~~6987.23. 5.2 Mechanical properties
The room temperature longitudinal mechanical properties of the profile shall be tested in accordance with GB/T228. 5.3 Microstructure
The microstructure of the profile shall be tested in accordance with GB/T3246. 5.4 Macrostructure
The macrostructure of the profile shall be tested in accordance with GB/T3247. 5.5 Dimension measurement
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QB/T1586.4-1992
The cross-sectional dimensions of the profile shall be measured with a measuring tool with an accuracy of not less than 0.2mm. 5.6 Surface quality
The surface quality of the profile shall be inspected by sensory inspection. When the depth of the defect cannot be determined, it can be measured by grinding method. 6 Inspection rules
Inspection rules shall comply with the provisions of GB/T6892. Note: The alloy grades in Article 43 of GB/T6892 include LMgl and LMg2.7 Marking, packaging, transportation, purchase and storage
7.1 Marking
Each bundle of profiles shall have a label, which shall indicate: a.
Name or code of the purchaser;
Alloy and state code,
Specification (or model);
Batch number,
Quantity (number of pieces or net weight);
Product standard number;
Inspection mark;
Production date.
Packaging, transportation and storage shall comply with the relevant provisions of GB/T3192. Quality certificate
Quality certificate shall comply with the relevant provisions of GB/T6892. Additional Notes:
This standard was proposed by the Quality Standards Department of the Ministry of Light Industry. This standard is under the jurisdiction of the National Fur Leather Standardization Center. This standard was drafted by Beijing Leather Hardware Factory, Shanghai Changjiang Leather Hardware Factory, and Tianjin Leather Hardware Factory. The main drafters of this standard are Yang Cuirong, Fang Xinhua, and Fan Yuqi.
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