【摘要】 针对燃气涡轮二级导向器叶片形状复杂，加工基准多次转换导致加工质量差，生产效率低的现状，提出一种再造加工基准方法：寻找一种低熔点合金配方并设计相应铸型，实现导向器叶片在铸型中的定位，并在其周围浇注形状规则的合金块作为加工基准。该目标合金具有较低的熔点、好的液态流动性、凝固后具有较大的硬度，可保证机加工时装夹稳定、同时具有较高的脆性以保证能够实现机械破碎，脱离导向器叶片；优化后的铸型可保证导向器叶片的定位精度要求以及机加工的精度要求，且避免产生浇注缺陷。更多还原

【Abstract】 In view of the complex shape of gas turbine secondary guide, poor machining quality and low production efficiency caused by multiple conversion of machining benchmarks, a method of remanufacturing machining benchmark is proposed: searching for a low-melting point alloy formula and designing the corresponding mold to realize the orientation of the guide in the mold, and pouring a regular-shape alloy block around as machining benchmark. The target alloy has a low melting point, good liquid fluidity, and high stiffness after solidification to ensure the stability of clamping and high brittleness to ensure that it can be broken and disengage the guide. The optimized mold can ensure the accuracy requirements of the guide orientation and the machining, also can avoid casting defects.更多还原