铸造铍青铜

Cast Be Bronze

介绍了铸造铍青铜的化学成分、牌号、性能、用途、冶金基础知识、加工方法、热处理工艺和铍的工业卫生措施。合金可在多种熔炉中熔炼。合金熔炼温度１３００～１３５０℃，浇注温度１１００℃～１１５０℃。淬火温度７８０～９２５℃，时间２～３ｈ。时效温度３５０～４８０℃，时间２～３ｈ。最佳性能σｂ＝１１３７ＭＰａ，σ０．２＝１０６８ＭＰａ，Ｒｃ＝４６，δ≥１％。合金主要用做防爆工具，塑料成型模具，儿童玩具模具，各种齿轮、轴承、轴瓦、轴套，海底电缆中继器结构件，电焊电极，发电机轴。

In this paper, a cast Be bronze is mentioned in its chemical constitution, designation, properties, application, rudimentary knowledge on metallurgy, processing method, heat treatment and industrial hygiene. It can be melted by many founding furnaces, for example black lead and Mg/Al crucibles. Its technical parameters are: smelting temperature: 1 300￣1 350 ℃, pouring temperature: 1 100￣1 150 ℃, quenching temperature: 780￣925 ℃, time: 2￣3 h, ageing temperature: 350￣480 ℃,time: 2￣3 h. Its optimum properties: σ b=1 137 MPa, σ 0.2 =1 068 MPa, R c=46, δ ≥1%. It can be used in explosion resistance tool, all kinds of gears, bearing, axle tile, axle sleeve, plastic forming die, toy die, welding electrode, repeater structure of submarine cable and revolution axle of giant electric generator. The beryuiosis can be prevented and treated.