Preparation method of electric stranded wire

• Main Authors: ZHENG LIANGYU, WANG YONGRU, CHAO GUOHUI, XIANG YANLONG
• Format: Patent
• Language: Chinese; English
• Published: 07.01.2022
• Subjects: AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL; BASIC ELECTRIC ELEMENTS; CABLES; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; CONDUCTORS; ELECTRICITY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; INSULATORS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING; MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; PERFORMING OPERATIONS; POWDER METALLURGY; PRETREATMENT OF RAW MATERIALS; PRODUCTION AND REFINING OF METALS; PUNCHING METAL; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention discloses a preparation method of an electric stranded wire. The preparation method is characterized by comprising the following preparation steps of (1) raw material preparation, wherein raw materials comprise more than 50wt% of a regenerated copper electrolytic plate and the balance of a mineral copper electrolytic plate; and (2) smelting, wherein the electrolytic plates are put into a furnace to be molten, charcoal is added while melting is carried out, after melting, the temperature is kept at 1200-1250 DEG C, after the temperature is kept for 0.5-3 h, the electrolytic plates are transferred into a heat preservation furnace, charcoal is added into the heat preservation furnace for covering, the temperature of the heat preservation furnace is controlled at 1150-1200 DEG C, the temperature is kept for 1-2 h, and meanwhile mixed gas of inert gas and reducing gas is blown into the bottom of the heat preservation furnace. According to the method, more than 50wt% of regenerated copper is adopted a