Portuguese to English Tech/Engineering Business/Commerce (general) Business Presentation - metal casting

I'm translating a business presentation, containing some very technical term related to Metal Casting (about which I have very limited knowledge). It's just one slide in the presentation that has said tecnical terms, structured like this:

Controle de Qualidade -- > Responsável pela inspeção de:
- Coquilas
- Estampos
- Caixas de Macho
- Componentes (Pinos, Insertos, Matrices, etc.)
- Peças Brutas e Usinadas
- Outros

Macho is the main I'm trying to understand. In another slide "macho" de areia" is mentioned, "Medição das galerias internas da peça para verificação de deslocamentos dos machos de areia." I came across this google image with both of these terms: https://www.google.com.mx/search?q=machos de areia&source=ln...