Please give me the guideline for the specification & standard formula for the stranding die design for the round compacted aluminum conductor with 96% to 97% compaction of 7,19,37,61 no of wires & also give a suggestion for the best cooling system for the compact dies. Presently we are using methyl alcohol sprayed on the compact dies & entry bell for the conductors
Spraying methyl alcohol into the entry bell would also in my opinion remove any trace drawing lubricant from the aluminum strands and increase the friction between the surface of the strands and the die itself. This by itself would create more frictional heat. Some actually slow drip in an extremely small amount of oil on a cloth on the wires at the closing bell. The oil of course must not promote environmental stress cracking if the conductor is to be insulated with polyethylene.
We used water cooling jackets on our closing/ compacting die holders.
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