Technical and economic impact of changing the manufacturing process of cores: case study

• Autor(a) principal: Cabral, Jaqueline Pereira
• Data de Publicação: 2021
• Outros Autores: Rodrigues, Gabrielly do Carmo, Lima, Carlos Roberto Camello
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Revista Produção Online
• Texto Completo: https://www.producaoonline.org.br/rpo/article/view/4243
• topic: Fundição; Moldes; Machos; Moldagem em Caixa Quente; Moldagem em Casca.; Casting; Molding; Cores; Hot Box; Shell Molding.

Casting parts with cavities require molds and cores. For the manufacture of cores, several processes can be applied. This work aims to study the feasibility of changing the core manufacturing process from Hot Box to Shell Molding. A case study is carried out in a brass foundry, seeking greater productivity and less loss in production. Surveys of losses in the foundry were carried out, data of cycle time, yield and scrap of the males were collected per stage of the process. With these data, the productive time lost in refuse for each method was calculated. As a result, it was determined that the change would increase the total foundry productivity by 5.9%. The economic viability of the project was also calculated, considering equipment costs, adaptations and training. It was concluded that the payback for this project would take place in thirty-nine months.