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HI钢帘线具有较高的延伸率、良好的抗冲击能力和较好的橡胶渗透性能,要保持HI钢帘线较高的破断伸长率和抗冲击能力,帘线钢丝预变形方式尤为重要。以生产5×0.30HI钢帘线为例探讨其生产工艺。拉拔半成品钢丝总压缩率为95.5%～97.5%,捻制时工艺设计采用一步成型和两步成型2种工艺流程。采用一步法生产5×0.30HI钢帘线,占用设备少,单机产量高,对能源的消耗少;采用两步法生产5×0.30HI钢帘线,其直径公差、破断力和破断伸长率等性能均优于一步成型,钢帘线保持较高的破断伸长率,且具有明显的稳定性,同时操作及维护简单,但生产成本高。
HI steel cord with high elongation, good impact resistance and good rubber permeability, HI steel cord to maintain high breaking elongation and impact resistance, cord steel pre-deformation is particularly important . Take the production of 5 × 0.30HI steel cord as an example to discuss its production process. The total compression ratio of drawn steel wire is 95.5% ~ 97.5%. The process design in twisting adopts two kinds of technological processes of one-step molding and two-step molding. One-step production of 5 × 0.30HI steel cord, occupy less equipment, single high output, less energy consumption; using two-step method to produce 5 × 0.30HI steel cord, the diameter tolerance, breaking force and breaking elongation And other properties are better than one-step molding, steel cord to maintain a high breaking elongation, and has obvious stability, while the operation and maintenance is simple, but the high cost of production.