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高磷耐磨铸铁高磷耐磨铸铁具有较高的耐磨性、机械性能和良好的铸造性能。铸造工艺易于掌握,铸件成本较低.该铸铁于1959～1965年期间进行试验和生产验证,1966年一机部原二局组织鉴定,并要求在一般中小型机床导轨铸件中推广使用。1.成分、机械性能和金相组织: 成份:C 2.9～3.2%;P 0.40～0.65%;Si 1.2～1.7%;Mn 0.5～1.0%;S<0.12%。根据不同要求,高磷铸铁可以达到HT20—40、HT25—40、HT30—54等牌号铸铁的机械性能,挠度大于2.8毫米(支点距800毫米)略低于灰铸铁技术标准
High-phosphorus wear-resistant cast iron high-phosphorus wear-resistant cast iron with high wear resistance, mechanical properties and good casting performance. Casting process is easy to grasp, the casting cost is lower.The cast iron from 1959 to 1965 period of testing and production verification, a machine in 1966 the original Bureau of the second organization identification, and requirements in the general small and medium-sized machine tool guide castings to promote the use. 1. Composition, mechanical properties and microstructure: Composition: C 2.9-3.2%; P 0.40-0.65%; Si 1.2-1.7%; Mn 0.5-1.0%; S <0.12%. According to different requirements, high-phosphorus cast iron can reach the mechanical properties of HT20-40, HT25-40, HT30-54 and other grades of cast iron. The deflection is greater than 2.8mm (fulcrum distance 800mm) slightly lower than the gray cast iron technical standards