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橡套電纜橡皮發粘和銅絲發黑的原因分析

橡套電纜橡皮發粘和銅絲發黑的原因分析,銅絲發黑的根本原因是多種多樣要素導致的,不僅是橡皮的配法問題,還與銅絲自身所在的情況、橡膠加工加工工藝、橡膠硫化工藝、電纜線的構造、護線套橡膠配方、環境等眾多要素相關。

銅絲自身的根本原因在廿世紀五十到六十年代,國內大多數生產廠家均應用普通銅桿,銅含量為99.99%,均為有氧銅桿,生產方法都是銅錠加熱后經多道壓延后制得黑色銅桿,經過大、中、小拉將銅桿制成比較細的銅絲。

因為銅自身不是無氧銅,在加工過程中銅絲表面難免出現氧化。到了廿世紀八十年代,國內引進了無氧銅桿的先進生產技術,以及國內自行開發的無氧銅桿生產技術,使整個電線電纜行業均用上了無氧銅桿,這無疑是改善了銅絲的發黑問題。但因為對銅桿的加工,非常是韌煉加工工藝的掌握以及加工好的銅線芯存放的條件不好,使銅線芯自身已有輕微的氧化,這也是銅絲發黑的根本原因之一。



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