论文部分内容阅读
仪器仪表的结构中采用铝合金压力铸造方法来制造零部件是很多的,因为它有一系列优点。重量轻,有一定强度,铸造精度高,生产效率高。特别是适用于大量生产。目前使用最多的压铸铝合金材料是ZL-7(冶金部标准YB143-65)。因为它的比重不大,线收缩不太大,流动性很好,耐腐蚀性较好,价格也比较便宜,这些优点对仪器仪表是很合宜的,因而被广泛用于压力铸造各种复杂的仪器仪表零件。虽然ZL-7铝合金的强度在所有铸造铝合金中不算最高,但是经过压力铸造后,提高了铸件强度,已经能够满
The structure of instrumentation using aluminum alloy pressure casting method to manufacture parts is very large, because it has a series of advantages. Light weight, a certain strength, high casting accuracy, high production efficiency. Especially suitable for mass production. At present, the most used die-casting aluminum alloy material is ZL-7 (Metallurgical Department standard YB143-65). Because of its small proportion, the line contraction is not large, good liquidity, corrosion resistance is better, the price is cheaper, these advantages of instrumentation is very suitable, it is widely used in pressure casting a variety of complex Instrumentation parts. Although the strength of ZL-7 aluminum alloy in all the cast aluminum is not the highest, but after pressure casting, increased casting strength, has been able to full