1. Copper rods are transported, viewed and stored before entering the factory Most of the cable companies in China use copper for outsourcing. High quality metallic copper rods should be selected, standard supplier delivery, delivery procedures and guidelines, and copper rod inspections in accordance with GB. / T3048.2 or cable company standard implementation. The storage of copper rods can be covered with plastic or plastic film covering the copper rods, that is, the simplest physical barrier method blocks the copper rods from the touch of moist air. When the workshop uses copper rods, they must inspect the copper rods one by one to see if they have a black appearance and manipulate them from the source of production.
2, copper wire drawing process control 0.4mm monofilament drawing is usually selected continuous annealing copper pull machine and the middle pull machine, through the line, drawing and annealing, cooling, drying, closing line and other processes. First and foremost, the right mold should be selected, and it must not be too small, otherwise it will enforce the lattice variation of metallic copper and increase the temperature of heavy metals. Secondly, check the pH of the emulsion before turning on the machine to ensure that it is an alkaline solution. Add antioxidants to the drawing oil together. Form a passivation film on the outside of the copper conductor to avoid oxidation. When releasing the wire, adhere to the release tension and make it stable and even. Excessive quivering; operator should ensure proper height of water level in the drawing process, ensure uniform annealing, avoid lack of annealing or excessive annealing; at the time of take-up, the copper conductor should not have liquid remaining on the outside, and a monotonous place can be placed in front of the take-up line. Felt (often changed) to ensure monotonous monofilament. After all, after drawing, it should be sealed with a bright plastic film and stored in a monotonous environment to be circulated. Otherwise, the risk of oxidation may be caused by the high surface temperature of the conductor and the humid air.
3, copper wire stranding (bundle) and insulating rubber, sheath rubber extrusion process to copper wire stranding as an example, the conductor in the twisting process, through the various pressure die makes the metal copper lattice changes in the structure, in the strong Under the action of the external force, the temperature of the copper conductor after the over-mold has a greater progress than before the overmolding, so the outer layer of the copper conductor is easily oxidized. Therefore, the antioxidant (0.3% benzotriazole alcohol solution) can be dripped into the copper wire in the twisting and process top infusion hose, and the standard should be in accordance with the appearance of just moistening the copper wire. The appearance of oxidation or excessive gamma seizures occurs after all anti-oxidation work has been prepared and then switched on. The take-up place shall ensure that the take-up reel is monotonous, and after the take-up reel is full, seal it with a bright plastic film.
2, copper wire drawing process control 0.4mm monofilament drawing is usually selected continuous annealing copper pull machine and the middle pull machine, through the line, drawing and annealing, cooling, drying, closing line and other processes. First and foremost, the right mold should be selected, and it must not be too small, otherwise it will enforce the lattice variation of metallic copper and increase the temperature of heavy metals. Secondly, check the pH of the emulsion before turning on the machine to ensure that it is an alkaline solution. Add antioxidants to the drawing oil together. Form a passivation film on the outside of the copper conductor to avoid oxidation. When releasing the wire, adhere to the release tension and make it stable and even. Excessive quivering; operator should ensure proper height of water level in the drawing process, ensure uniform annealing, avoid lack of annealing or excessive annealing; at the time of take-up, the copper conductor should not have liquid remaining on the outside, and a monotonous place can be placed in front of the take-up line. Felt (often changed) to ensure monotonous monofilament. After all, after drawing, it should be sealed with a bright plastic film and stored in a monotonous environment to be circulated. Otherwise, the risk of oxidation may be caused by the high surface temperature of the conductor and the humid air.
3, copper wire stranding (bundle) and insulating rubber, sheath rubber extrusion process to copper wire stranding as an example, the conductor in the twisting process, through the various pressure die makes the metal copper lattice changes in the structure, in the strong Under the action of the external force, the temperature of the copper conductor after the over-mold has a greater progress than before the overmolding, so the outer layer of the copper conductor is easily oxidized. Therefore, the antioxidant (0.3% benzotriazole alcohol solution) can be dripped into the copper wire in the twisting and process top infusion hose, and the standard should be in accordance with the appearance of just moistening the copper wire. The appearance of oxidation or excessive gamma seizures occurs after all anti-oxidation work has been prepared and then switched on. The take-up place shall ensure that the take-up reel is monotonous, and after the take-up reel is full, seal it with a bright plastic film.
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