我矿广大职工坚持“鞍钢宪法”,发扬自力更生、艰苦奋斗的革命精神,于1970年3月开始进行了大、中爆破导线使用塑料铁芯线的试验。经过一年多的试验,实现了用塑料铁芯线全面取代橡皮绝缘铝线。四年来,使用塑料铁芯线作爆破导线,采用复式并-串-并联的电爆网路,成功地获得了安全准爆的效果。塑料铁芯线的技术特性:铁芯直径(单股)为1.2毫米,铁芯外表涂锌,塑料(聚氯乙烯)厚 My mine workers adhere to the “Anshan Iron and Steel Constitution,” carry forward the self-reliance, hard work and revolutionary spirit, in March 1970 began a large, medium-sized blasting wire using plastic core wire test. After more than a year of testing, to achieve a comprehensive replacement of rubber insulated plastic wire with aluminum wire. Over the past four years, the use of plastic core wire for blasting wire, the use of complex and - string - parallel electric burst network successfully obtained a safe quasi-burst effect. Plastic core wire technical characteristics: core diameter (single) 1.2 mm, iron core surface coated with zinc, plastic (PVC) thick