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挤压轮转速是大管径电缆铝护套包覆成形过程中的一个重要工艺参数,其对工装模具使用寿命、产品质量及生产效率具有直接的影响。基于SSLB500型双轮立式连续包覆机,采用有限元法,通过对Φ180 mm×4 mm电缆铝护套连续包覆过程进行数值模拟,分析在不同挤压轮转速下金属成形过程中的速度场、温度场及压力的分布状况,得到了挤压轮转速对电缆铝护套连续包覆成形过程的影响规律;基于相同模具结构,进行了转速分别3和7 r·min-1的铝护套连续包覆实验,实验结果与数值模拟所得规律相符,证明所建立的有限元模型正确。研究结果可供大管径电缆铝护套连续包覆工艺参数选择时参考。
Extrusion wheel speed is a large diameter cable sheathing of aluminum forming an important process parameters, the tooling life, product quality and production efficiency has a direct impact. Based on SSLB500 two-wheel vertical continuous wrapping machine, the finite element method was used to simulate the continuous coating process of Φ180 mm × 4 mm cable aluminum sheath. The speed of metal forming at different extrusion wheel speeds Field, temperature field and pressure distribution, the effect of extrusion wheel rotation speed on the continuous overmolding process of the cable aluminum sheath was obtained. Based on the same mold structure, the aluminum sheath with speed of 3 and 7 r · min-1 The experiments of continuous covering experiment are consistent with those obtained by numerical simulation. It proves that the finite element model established is correct. The research results are available for large diameter cable aluminum sheath continuous coating process parameters selection reference.