Manufacturing method of high-flame-resistant, low-emission, green and environmentally-friendly cable
A kind of green environmental protection, manufacturing method technology, applied in cable/conductor manufacturing, insulated cable, conductor/cable insulation and other directions, can solve the problems of high toxicity, halogen-free series flame retardant wire and cable can not be achieved, high smoke and other problems, achieve strong Flame retardant performance, safe and efficient extrusion process, and the effect of blocking the spread of oxygen
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Embodiment 1
[0035] In Example 1, a method for manufacturing a high flame-retardant low-emission green cable, the method includes the following steps: (1), material selection; (2), wire drawing; (3), conductor stranding; (4) , extruded insulation; (5), radiation crosslinking; (6), cabled; (7), extruded oxygen barrier layer; (8), armored; (9), wrapping; (10), extruded Outer sheath; (11), product performance testing; (12), finished product packaging and storage.
[0036] The wire drawing is drawn into circular copper monofilaments of various specifications by using electrician round copper rods through a plurality of wire drawing dies of special wire drawing equipment.
[0037] The conductor stranding refers to twisting a plurality of round copper monofilaments on the conductor stranding equipment according to the predetermined number, specification, stranding direction and pitch to form a tightly compressed circular or non-compacted circular Or forming conductors, the stranding direction o...
Embodiment 2
[0052]In Example 2, the method steps for manufacturing the cable are as follows: (1), material selection; (2), wire drawing; (3), conductor; (4), extruded insulation; (5), irradiation crosslinking; ( 6), cabling; (7), extruded oxygen barrier layer; (8), armoring; (9), wrapping; (10), extruded outer sheath; (11) product performance testing; (12) The finished product is packaged in storage, and the conductor stranding step in embodiment 1 is changed into a conductor step. The conductor step refers to the circular copper monofilament formed in the wire drawing step directly as the conductor of the product, and the total thickness of the extruded insulation layer is changed to Change the thickness of the inner layer insulation to 0.2mm, change the thickness of the outer layer insulation to 0.5mm, change the extrusion line speed of the insulation layer to 80-100m / min, and change the diameter of the flame-retardant high-temperature filling rope to 0.7mm. Change it to φ2-4mm, change ...
Embodiment 3
[0060] In Example 3, the total thickness of the extruded insulating layer in Example 1 is changed to 2.8mm, the thickness of the inner layer insulation is changed to 0.8mm, the thickness of the outer layer insulation is changed to 2mm, and the extrusion of the insulating layer Change the line speed to 5-7m / min, change the thickness of the flame-retardant glass fiber wrapping tape to 60-80mm, change the stranding pitch in the cabling step to 50-55 times, and change the thickness of the metal strip in the armoring process to 0.8mm or the diameter of the metal strip is changed to 3.15mm.
[0061] The cables manufactured by Example 3 also meet the requirements in the "Code for Electrical Design of Civil Buildings": super high-rise buildings should choose combustion performance B 1 Grade and above, smoke toxicity is t 0 Level, burning droplets / particles level is d 0 Grade wires and cables; Class I high-rise buildings and crowded public places should choose combustion performance ...
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