Melhoria aplicada ao processo de moldagem de componentes fundidos com base no mapa de fluxo de valor

Abstract

This study presents an improvement model applied to the process of molding of cast components in the one casting located in the southwestern of Paraná, in order to optimize the process, increase productivity and offer higher safety and ergonomics in the execution of the process functions. To improve the productivity of this process, was proposed one model a casting tree, that reduce the proportion of sand and metal in the mold, significantly increasing the yield metallurgical and physical space occupied in the industry leakage area. For the feasibility of the project it was necessary to change the molding process in green sand to the process of sand Cold-box where a device prepares the sand which is shaped to form a rigid mold, improving the quality and ergonomics of the process. The leak before done with two small saucepans, in this model, the filling of several parts is done in feed channel single, with a single large pan with capacity of 700kg, is moved a crane and operated by single operator. Through the value flow map it is possible to evaluate the lead time of the process, as well as the processing time and number of employees involved, from these values it is possible to conclude the improvement expressed in percentage of reduction.