我厂地处偏僻地区。在熔铸青铜合金时,因缺少磷铜,未能很好脱氧,经常造成铸件内部气孔,报废甚多。后来闻知兽骨中含有较多的磷,可代替磷铜作脱氧剂。但是,兽骨不易得到。我们就地取材,用当地容易得到的,而且价格低廉的牛骨代替。牛骨主要是由磷酸钙[Ca_3(PO_4)_2]和磷脂组成,其中钙含量约占60％、磷约占30％,还有少量钠和镁等。所以磷是实际存在的。我们先熔炼了一坩埚作试验,将该批铸件全部加 Our factory is located in remote areas. In the casting of bronze alloy, due to the lack of phosphor bronze, not well deoxidized, often causing the pores inside the casting, scrap much. Later learned that the bones contain more phosphorus, phosphorus can be used as deoxidizer instead. However, animal bones are not easy to get. We made it on the spot, replacing it with cheap, locally available bovine bones. Bone mainly consists of calcium phosphate [Ca_3 (PO_4) _2] and phospholipids, of which about 60% of calcium, phosphorus, accounting for about 30%, as well as a small amount of sodium and magnesium. So phosphorus is actually there. We first smelt a crucible for testing, adding all the castings