机械设备零部件再制造评价点阵图模型及应用

再制造评价作为绿色再制造工程的设计基础，是开展再制造的前提。为了判断机械设备零部件是否适合进行再制造，在分析机械产品再制造过程的基础上，建立了涵盖技术、经济和环境方面共12个指标的再制造评价指标体系；基于层次分析法，构建了以再制造评价综合指数为目标层的再制造评价层次结构模型。结合专家评分法，创造性地提出了再制造评价点阵图模型，对专家打分结果进行数据可视化处理，然后量化评价指标，计算指标权重和影响系数，从而得到再制造评价综合指数。以汽轮机长叶片为工程案例，利用再制造评价点阵图模型进行再制造评价，得到再制造评价综合指数为0.83，表明该叶片具有良好的可再制造性。结果表明，再制造评价点阵图模型具有指标全面、结果直观和流程规范的特点，可为再制造生产提供重要的信息支撑和决策依据。

Dot Matrix Model of Remanufacturing Evaluation for Mechanical Equipment Parts and Its Application

As the design basis of green remanufacturing engineering, remanufacturing evaluation is the prerequisite for remanufacturing. In order to determine whether the mechanical equipment parts are suitable for remanufacturing, a remanufacturing evaluation index system was established by analyzing the process of mechanical products remanufacturing. The index system contained 12 indicators in technology, economy and environment. Based on the analytic hierarchy process, a remanufacturing evaluation hierarchy structural model was established. In particular, a remanufacturing evaluation dot matrix model was established combined with experts grading method. In the model, the results of experts grading were visualized, and then each evaluation index was quantified. The weight and influence coefficient of the index were calculated, and the remanufacturing evaluation composite index was obtained. Taking a long steam turbine blade as an example, the remanufacturing evaluation composite index was calculated to be 0.83, indicating that the blade has good remanufacturability. The result demonstrates that the method is accurate, comprehensive, and intuitionistic, which can provide important information support and decision basis for the remanufacturing engineering.