12
Nov
Identify steel reinforced aluminum stranded wire
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Steel-core Aluminum Stranded Wire can be identified through the following characteristics and methods:
1 Structural characteristics: Steel-core Aluminum Stranded Wire is made of aluminum wire and steel wire twisted together, with a steel "core" inside and aluminum wire wrapped around the steel core outside by twisting.
This structure makes the steel core mainly play the role of increasing strength, while the aluminum stranded wire mainly plays the role of transmitting electrical energy.
2 Model representation: The model of steel-core aluminum stranded wire is usually represented by "LGJ", where "L" represents aluminum wire, "G" represents steel core, and "J" represents stranded wire. For example, a steel-core aluminum stranded wire with a nominal cross-section of 300mm² aluminum and 50mm² steel is represented as "LGJ-300/50"
3 Performance parameters: The performance parameters of steel-core aluminum stranded wire include nominal cross-section, structure, calculated cross-section, outer diameter, DC resistance, rated tensile strength and unit weight. These parameters can help identify and distinguish steel-core aluminum stranded wires of different specifications.
4 Appearance inspection: Check the appearance of the stranded wire. The surface of the aluminum wire should be smooth and free of all defects that are inconsistent with good industrial products. The stranding should be uniform and tight
5 Material inspection: Round aluminum wire should comply with the provisions of LY9 hard round aluminum wire in H9 state in GB/T3955-83 "Electrical Round Aluminum Wire", and galvanized steel wire should comply with the provisions of GB3428-82 "Galvanized Steel Wire for Steel Core Aluminum Stranded Wire"
6 Process quality: Check whether the stranding is uniform and tight, and whether the welding complies with the regulations. For example, aluminum strands with more than 7 strands and round aluminum wires in steel core aluminum stranded wires are allowed to have joints, but the distance between the two joints on the finished stranded wire should not be less than 15m
7 Mechanical properties and resistivity: Check the tensile strength, winding performance and resistivity of the round aluminum wire after stranding at 20℃, as well as the tensile strength, stress at 1% elongation, toughness test and winding performance of the galvanized steel wire after stranding
Through the above characteristics and methods, steel core aluminum stranded wire can be effectively identified.
1 Structural characteristics: Steel-core Aluminum Stranded Wire is made of aluminum wire and steel wire twisted together, with a steel "core" inside and aluminum wire wrapped around the steel core outside by twisting.
This structure makes the steel core mainly play the role of increasing strength, while the aluminum stranded wire mainly plays the role of transmitting electrical energy.
2 Model representation: The model of steel-core aluminum stranded wire is usually represented by "LGJ", where "L" represents aluminum wire, "G" represents steel core, and "J" represents stranded wire. For example, a steel-core aluminum stranded wire with a nominal cross-section of 300mm² aluminum and 50mm² steel is represented as "LGJ-300/50"
3 Performance parameters: The performance parameters of steel-core aluminum stranded wire include nominal cross-section, structure, calculated cross-section, outer diameter, DC resistance, rated tensile strength and unit weight. These parameters can help identify and distinguish steel-core aluminum stranded wires of different specifications.
4 Appearance inspection: Check the appearance of the stranded wire. The surface of the aluminum wire should be smooth and free of all defects that are inconsistent with good industrial products. The stranding should be uniform and tight
5 Material inspection: Round aluminum wire should comply with the provisions of LY9 hard round aluminum wire in H9 state in GB/T3955-83 "Electrical Round Aluminum Wire", and galvanized steel wire should comply with the provisions of GB3428-82 "Galvanized Steel Wire for Steel Core Aluminum Stranded Wire"
6 Process quality: Check whether the stranding is uniform and tight, and whether the welding complies with the regulations. For example, aluminum strands with more than 7 strands and round aluminum wires in steel core aluminum stranded wires are allowed to have joints, but the distance between the two joints on the finished stranded wire should not be less than 15m
7 Mechanical properties and resistivity: Check the tensile strength, winding performance and resistivity of the round aluminum wire after stranding at 20℃, as well as the tensile strength, stress at 1% elongation, toughness test and winding performance of the galvanized steel wire after stranding
Through the above characteristics and methods, steel core aluminum stranded wire can be effectively identified.
