锡青铜中加磷的目的是为了脱氧、改善铸造性能、机械性能及耐磨性。锡青铜中含磷超过0.1%即称为磷锡青铜,俗称磷青铜。压力加工用的磷锡青铜,锡和磷的含量一般限制在8%和0.25%以内,含磷量最多不超过0.5%;铸造用磷锡青铜含锡量可高达13%,含磷量可达1.2%。前者由于具有良好的机械性能、工艺性能以及高的弹性极限、弹性模数、疲劳极限,广泛用作弹簧、金属网及耐磨零件;后者因具高的耐磨性多用作蜗轮、轴套等要 The purpose of adding phosphorus in tin bronze is to deoxidize, improve casting performance, mechanical properties and wear resistance. Tin Bronze Phosphorus more than 0.1%, known as phosphor bronze, commonly known as phosphor bronze. Phosphor bronze, tin and phosphorus for press working are generally limited to 8% and 0.25%, with a maximum phosphorus content of not more than 0.5%; tin and bronze for foundry bronze contain up to 13% tin and phosphorus up to 1.2%. The former is widely used as spring, wire mesh and wear-resistant parts due to its good mechanical properties, process properties and high elastic limit, elastic modulus and fatigue limit; the latter is widely used as a worm gear, bushings Wait