3+9+15×0.175交互捻钢丝帘线拉伸齐断的研究

Study on Simultaneous Tensile Break of 3+9+15×0.175 Intertwisted Steel Cord

通过对3+9+15×0.175钢丝帘线各层单丝的理论应力进行分析,并对解捻单丝的实际破断力进行测试,分析钢丝帘线拉伸不齐断的原因。结果表明,通过3+9层使用高破断力单丝,使捻制后3+9层单丝的破断力与外层15根单丝相近,从而增大了3+9+15×0.175钢丝帘线拉伸齐断的几率。

The theoretical stress of each layer of monofilament of 3+9+15×0.175 steel cord was analyzed,and the actual breaking force of untwisted monofilament was tested to analyze the cause of the irregular breaking of the steel cord.The results showed that by using the monofilament with high breaking force for 3+9 layers,the breaking force of 3+9 layer was similar to that of the outer layer with 15 monofilaments after twisting,which resulted in an increased probability of simultaneous tensile breaking of both layers under tensile deformation.