Heat-resisting and compression overhead cable and preparation method thereof
An overhead cable, heat-resistant technology, applied in the field of power cables, can solve problems such as cable core fire, cable core temperature rise, etc., to achieve the best use effect.
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[0032] The preparation method of the above-mentioned heat-resistant compression overhead cable, the method comprises the following steps:
[0033] The steps of heat-resistant aluminum alloy rod rolling: heat the aluminum ingot to melt it into liquid aluminum water, transfer the smelted aluminum water into the holding furnace, add other raw materials according to the proportion and stir them evenly, and finally stir them evenly The mixed melt is rolled into a heat-resistant aluminum alloy rod with a circular cross-section;
[0034] Stranding and winding steps: put the rolled heat-resistant aluminum alloy rod on the trapezoidal stranding machine to twist the heat-resistant aluminum alloy core into a round conductor with high compression coefficient. When twisting and winding, put a After the heat-resistant aluminum alloy rod is placed in the center, several layers of conductive layers are twisted on its outer side in turn;
[0035] Annealing steps: anneal the round conductor ob...
Embodiment
[0039] 1. Preparation of heat-resistant aluminum alloy rod
[0040] Raw material preparation: raw materials include aluminum ingot, iron agent, silicon agent, copper agent, rare earth aluminum alloy agent, specifically, aluminum ingot, iron agent, silicon agent, copper agent are industrial grade aluminum ingot, iron block, amorphous Or single crystal silicon, copper block, and the rare earth aluminum alloy agent can be rhenium aluminum alloy containing 4.4-5% rhenium (Re), such as Al-Re-Cu-Si-Mn-Ni containing 4.4-5% Re - Mg-Cr-Zr alloys.
[0041] The preparation steps of the heat-resistant aluminum alloy rod are as follows: first, heat and melt the aluminum ingot on the continuous casting and rolling production line to melt it into liquid (more precisely, molten) aluminum water; then flow the aluminum water to the holding furnace Add other master alloys (i.e. iron, silicon, copper and rare earth aluminum alloys) and stir evenly, and finally roll into a heat-resistant aluminum...
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