What are the methods for choosing copper stranded wires in different industries?
First of all: the purchase of copper stranded wire needs to be observed from the appearance,
Generally, a good copper stranded wire has a brighter appearance, obvious damage and scratches, and no discoloration caused by obvious oxidation reaction. The color of the outside is relatively uniform, with black spots and cracks.
The lines are evenly spaced. Meeting the above criteria is a good choice of copper stranded wire.
Next: Look at the specifications and models of copper stranded wires
The selection of copper stranded wire needs to observe the size and specification of the wire. Generally, the drawing of copper stranded wire must be within the specified range and cannot exceed the process standard, otherwise it will be regarded as an invalid stranded wire. The single wires that make up the stranded wire must be full
The feet are uniform and tidy, in line with the process rules.
Again: Look at the composition of the copper stranded wire structure
In the purchase of copper stranded wires, the distribution and composition of the stranded wires should also be observed to see if there are short wires, missing wires, loose strands, and stranded strands. Generally, these can be observed with the naked eye, and we need to observe carefully.
Inspecting the quality of copper stranded wires, unqualified products cannot be selected for the production of wires and cables, which will cause serious safety accidents.
Finally: Look at the copper stranded wire welding process
In the purchase of copper stranded wires, attention should also be paid to whether the welding process is reliable, whether the welded interface parts are neat, and there are uneven lines. Welded joints should be neatly maintained, flattened, rounded, and not
The diameter of the welding head should not exceed 0.2 mm in general: the welding of two adjacent copper stranded wires should maintain a certain distance, and the division should be uniform.