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铝合金金具铸造方法有多种 ,重力或低压铸造、高压压铸和挤压铸造工艺具有较快的冷却速率和较小的枝晶间隙 ,是最有可能成为制造铝合金电力金具的制造工艺。经分析高压压铸制造的产品虽具有表面组织晶细化、尺寸精度高、机械性能好、生产效率高等特点 ,但由于该工艺注入速度快 ,腔内空气来不及排出 ,易造成铸件内出现气泡和疏松 ,不宜采用 ;重力、低压铸造和挤压铸造工艺是生产铝合金电力金具经济、技术成熟、可靠的方法。
There are many ways of casting aluminum alloy, gravity or low pressure casting, high pressure die casting and squeeze casting process has a faster cooling rate and smaller dendrite gap, is most likely to become manufacturing process of aluminum alloy electrical fittings. The analysis of high pressure die-casting products with surface texture, although the crystal structure, high dimensional accuracy, good mechanical properties, high production efficiency, but because of the injection speed, the cavity of the air too late to discharge, easy to cause bubbles and loose casting , Should not be used; gravity, low pressure casting and extrusion casting process is the production of aluminum alloy with economic, mature technology, reliable method.