熔制磷铜的主要关键是要特别注意其严密性,合金料的烘干和熔化都要在密闭状态中进行。我厂制备的合金料中混合有粉末状的熔剂,混合的方法为铜层+熔剂+磷粉+水,磷粉力图搅拌均匀。熔化时,在熔制的坩埚口上塗上一层泥浆水,沿坩埚口放上一圈耐火泥,套上同号的旧坩埚作盖,并用铅丝捆实。然后在两坩埚的接缝处糊上一层耐火泥,放入炉中,加入焦炭至盖没埚盖。当焦炭燃烧至白炽程度时进行通炉,是否再添入焦炭,视合金料的熔点和熔化数量而定。当合金料熔化后,即可起埚倾入铁模内浇成磷铜块。磷铜块的断面呈白色,很脆,加热后断面的能变色。 The main key to melting phosphor bronze is to pay special attention to its tightness. The drying and melting of the alloy material must be carried out in a closed state. The alloy material prepared by our factory is mixed with a powdery flux. The mixing method is copper layer + flux + phosphorus powder + water, and the phosphorus powder tries to mix evenly. During melting, a layer of muddy water is coated on the crucible mouth and a ring of refractory mud is placed along the mouth of the crucible. The old crucible with the same number is covered and covered with lead wire. Then in the two crucibles seams paste a layer of refractory mud, into the furnace, adding coke to the lid did not cover. When the coke burns to the incandescent degree through the furnace, whether to add coke, depending on the alloy melting point and melting quantity may be. When the alloy material melts, you can pour into the iron mold pouring into the phosphor bronze block. Phosphor bronze block section is white, very brittle, heated cross-section can change color.