覆砂铁型铸造工艺生产ADI摩擦斜楔

ADI Oblique Wedge Produced with Resin Sand Coated-Iron Mold Casting Process

介绍了采用覆砂铁型铸造生产火车用摩擦斜楔ADI铸件的铸造工艺和热处理工艺。通过采用半封闭式浇注系统和过滤网挡渣;选用合理的炉料配比及喂丝球化处理工艺;采用盐浴等温淬火工艺,最终获得以贝氏体+残余奥氏体为基体的高强度、高硬度及高韧性的ADI铸件。

The casting method and heat treatment proeess adopted for using resin sand coated-iron mold to produce ADI oblique wedge of railway vehicles was introduced. By adopting semi-pressurized gating system and filter to skim slag, choosing rational mehing charge mixture ratio and the cored-wire injection nodularizing process, using salt bath isothermal quenching process, the hi-strength , hi-hardness and hi-toughness ADI castings with bainite ＋ residual auslenite as matrix were finally obtained.