ZQSn10-1锡磷青铜铸件最常见的缺陷是气孔和缩松。下面谈一谈它们产生的主要原因和防止措施。气孔锡磷青铜吸气性很强,尤其是在高温熔炼期中能将炉料、工具或炉气带进的水份分解为原子状态的氧和氧:H_2O=[O]+2[H]。这两种气体很活泼,很容易溶解于铜合金液中,尤其是氢气,1公斤1100的铜合金液可含63毫升氢气。浇入型后,因温度降低,铜合金液中过饱和的氢与氧结合成为水蒸汽析出来,如来不及析出就在铸件中产生分散性气孔(针孔),一般φ3～5毫米,呈圆形,内部光滑,也有的互相串通,使形状和大小不一。常出现在铸件的内部或表皮 ZQSn10-1 tin phosphor bronze casting the most common defects are stomatal and shrinkage. Now let’s talk about the main causes and preventive measures. Stomatal Tin Phosphor Bronze has a very strong getter, especially the oxygen and oxygen which can decompose the water brought by charge, tool or furnace gas into atomic state during the high temperature melting period: H 2 O = [O] +2 [H]. These two gases are very lively and easily dissolve in copper alloy fluids, especially hydrogen, which contains 63 milliliters of hydrogen in 1 kg of 1100 copper alloy fluid. Pour into the type, due to lower temperature, copper alloy liquid supersaturated hydrogen combined with oxygen into water vapor out, too late to precipitate in the casting of discrete pores (pinholes), usually φ3 ~ 5mm, round Shape, internal smooth, but also some collusion, so that the shape and size vary. Often appear in the casting’s interior or skin