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电缆用铜带是通讯电缆用的重要原材料。无氧铜材料做为电缆带材具有优良的导电、导热及焊接性能。本文重点讨论了高精度、超长无氧铜电缆带熔炼铸造和加工生产的关键工艺因素。指出采用精料密封的原料使用原则和必要的精炼工艺、选取合适的熔炼覆盖剂和铸造覆盖剂(覆盖方式)、进行大规格结晶器结构的合理设计制作是影响无氧铜大锭(单重4.5-7.5吨)质量的重要因素。重点讨论了各工艺因素对铸锭氧含量的影响及氧含量分布规律和不同的检测方式、方法。同时讨论了电缆铜带轧制、退火、表面处理、精密剪切等加工工艺对带材各项性能指标的影响。中间退火工序对材料的内部组织影响较大,对成品带材的屈服强度指标的控制至关重要。确定了高精度、超长(大于 3000米)无氧铜电缆带熔铸、加工的最佳生产工艺。
Copper cable is an important raw material for communication cables. Oxygen-free copper material as a cable strip has excellent electrical conductivity, thermal conductivity and welding performance. This article focuses on the high-precision, ultra-long oxygen-free copper cable with the key process of smelting casting and processing of production factors. It is pointed out that the principle of using raw material sealed by raw materials and the necessary refining technology, selecting proper smelting covering agent and casting covering agent (covering way) 4.5-7.5 tons) quality important factor. The effects of various technological factors on the oxygen content of ingot and the distribution of oxygen content and different detection methods and methods are discussed. At the same time, the effects of various processing parameters such as copper strip rolling, annealing, surface treatment and precision shearing on the performance of the strip are also discussed. The intermediate annealing process has a great influence on the internal structure of the material, and it is very important to control the yield strength index of the finished strip. To determine the high-precision, long (more than 3000 meters) oxygen-free copper cable cast, the best production process.