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提起磷铜,铸铜工人都非常熟悉,几乎每天都使用它。在熔铜的过程中,即使控制好风量,掌握好还原性火焰和熔化速度,铜水难免还会吸收空气中的氧气。铜水中吸收了少量的氧气,就在铸件中造成气孔,使铸件受不住压力试验,只好报废。铸件有了气孔,不单是经不起压力,还影响机械性能。所以在浇注耐压和重要铸件时,铜水总要经过脱氧处理。脱氧剂中,效果较好、使用比较简便的要算磷铜。只要在铜水中加入铜水重量0.2～0.5％的磷铜,就能除去铜水中的大部分氧气。磷铜不仅可以去除铜水中的氧气,还能改善铜合金的机械性能,提高硬
Mention phosphor bronze, copper workers are very familiar with, almost every day to use it. In the process of melting copper, the copper water will inevitably absorb the oxygen in the air even if the air volume is controlled and the reducing flame and the melting speed are controlled. Copper water absorbed a small amount of oxygen, causing the pores in the casting, the casting can not stand the pressure test, had scrapped. Castings with pores, not only can not stand the pressure, but also affect the mechanical properties. Therefore, casting pressure and important castings, copper water always go through deoxidation treatment. Deoxidizer, the effect is better, the use of relatively simple to count phosphor bronze. As long as copper in water by adding 0.2 to 0.5% by weight of phosphor bronze, copper water can be removed most of the oxygen. Phosphoric copper can not only remove the oxygen in copper water, but also improve the mechanical properties of copper alloys and improve the hardness