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课题的由来大多数多对通信电缆至少有一层聚乙烯护套,有时要用好几层,长期以来西电公司一直在考虑搞一套恰当的加工工艺,以便使护套结构均匀。挤护套时,缆芯是穿过挤出机包上聚乙烯护套的。我们希望电缆护套均匀,也就是圆周方向厚度变化不大,电缆全长上也无多大变化
The origin of the subject Most of the communication cables at least one layer of polyethylene sheath, and sometimes use several layers, for a long time Xidian company has been considering engaging in a proper processing technology in order to make the jacket structure uniform. When the jacket is squeezed, the core passes through the extruder jacket with polyethylene sheath. We hope that the cable jacket uniform, that is, little change in the thickness of the circumferential direction, the cable length has not changed much