A great number of tests show that the lower cylinder corrosion is directly related to the aluminum alloy inclusion and the foundry technology used.
经过无数次反复的试验后发现，底筒受潮锈蚀与铝合金材料夹杂物及铸造工艺控制有直接关系。
Filtration is an important way that can purify the aluminum alloy melts. It can improve the foundry properties of the aluminum alloy melts by filtration treatment.
过滤是铝熔体净化的一种重要方式，通过过滤处理，可以对铝熔体的铸造性能产生显著影响。
The Foundry mould made by polyurethane can serce for 80,000 times, it is similar with the mould made by aluminum alloy.
用聚氨酯材料制造的铸造模具，使用寿命可达8万次，与铝合金模具相当。
The Foundry mould made by polyurethane can serce for 80,000 times, it is similar with the mould made by aluminum alloy.
用聚氨酯材料制造的铸造模具，使用寿命可达8万次，与铝合金模具相当。
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