The Research On Control Of Maintenance Costs For Hengli Company

Equipment maintenance plays a great role in the activities of manufacturing enterprises, and it is the principal or exclusive determinant of the business equipment prolonged stable operation. For a long time, time based maintenance is used for the equipment maintenance in our country, and it decides the maintenance modes based on the experience. However, the drawbacks of the measure must make the cost of production increase. The paper uses technical analysis to replace experience regulates for reducing the cost of maintenance based on maintenance management and maintenance techniques of the equipments.For the problems in maintenance management, the paper analyzes the drawbacks of existing management system based on summing up the past management experience of Hengli company, and improves the existing management system from management process, the statistic cost, the selection of new equipment and spare parts management. The new management system effectively reduces the cost of maintenance.For the problems in maintenance technique, the paper achieves the control for the cost of equipment maintenance based on two technical improvements. One proposes a new decision measure for the maintenance mode of equipment by combining analytic hierarchy process and fuzzy general appraisal method based on the existing maintenance modes. And the new decision measure reduces the cost of maintenance by deciding an appropriate maintenance mode for every equipment. Moreover, the other improvement reduces the cost of maintenance by forecasting the proper maintenance interval time for every equipment. Firstly, the method gets the reliability interval time using life distribution function based on guarantying the stable operation of the equipment, and obtains economy interval time by establishing and solving the optimization model of the lowest maintenance cost. Finally, the fuzzy general appraisal method is used to balance the two maintenance interval time data from the above, and the final optimal maintenance interval time has been got, which not only guarantees reliability but also reaches the optimal maintenance cost.