To each project its technology
Thanks to its large specialized production sites, MTWH owns several industrial plants catering to multiple processing technologies.
Highly skilled in a vast range of techniques, MTWH offers its customers advanced solutions to make their projects a reality.
Zamak ingots are molten down into a melting pot within the molding machine. The molten material is then pressed into a steel mold where it goes back to solid state in the shape of the final products.
As most plastic materials can be injected, in the molding process plastic shavings are molten, poured inside the molding machine and injected into a steel mold.
Cold metal stamping
It is one of the most widely used processes in sheet metal molding. The strip is placed between the mold and the blank holder, a process which slows down its sliding so as to prevent the formation of wrinkles under the blank holder itself. The punch then stretches the sheet over the radius of the mold, which will determine its shape. The force required by the punch for the forming is thus continuously increased up to the lowest central dead point of the punch itself.
By using specific milling machines, some materials can be mechanically shaped: among them are brass, steel, aluminum as well as some other metallic materials.
Metal Injection Molding is a complex molding process suitable for stainless steel. It consists of three phases:
- Molding – similar to plastic molding, raw steel and plastic chips are molten down into a mold to get the so-called “green”.
- Water debinding – the “green” parts are treated to partially eliminate the plastic content and get the so-called “brown”. Within MTWH Group, no chemicals are used in this phase.
- Sintering – this is the final stage where, to get the final steel product, the “brown” part needs to be cured in a high-pressure atmosphere at a temperature of over 1000°C.
A brass billet is heated up until it gets to its softening point, it is then smashed into a steel mold by a forging machine. The process is completed by cutting the exceeding burs.
This is the most suitable technique for producing particular shapes of brass or aluminum items, especially round ones.
Conceived as a jewelry-dedicated technology, when it comes to brass it is actually the go-to technique for complicated shapes that cannot be obtained through standard molding. It is also suitable as a prototypal technique.