Cold chamber die casting machines are mainly used for aluminium die casting and larger die cast parts. They are suitable for high clamping forces, larger shot weights and industrial series production with separate molten metal dosing.
The key difference to the hot chamber process is the separate dosing step: the molten metal is melted or kept warm outside the shot chamber and then fed into the cold chamber. The plunger then forces the metal into the die at high speed and high pressure.
In cold chamber die casting, the shot chamber is not permanently immersed in the molten metal bath. Instead, the liquid alloy is dosed from a melting furnace, holding furnace or dosing furnace into the shot chamber. This makes the process suitable for materials that would attack a hot chamber casting unit too strongly.
Aluminium alloys are therefore usually processed on cold chamber die casting machines. The process supports robust production of larger components, high clamping forces and sophisticated die casting cells with dosing technology, automation, spraying systems and trimming.
Cold chamber die casting machines are particularly relevant for aluminium die casting, but depending on the machine and application they may also be suitable for other non-ferrous metals. Important selection criteria include clamping force, shot weight, casting system, die size, automation level and matching peripheral equipment.
Typical applications include housings, structural parts, engine and gearbox components, technical aluminium parts, components for the automotive industry, mechanical engineering and electrical engineering, as well as die cast parts with high requirements for dimensional accuracy, stability and series quality.
Cold chamber machines are used when the molten metal has to be dosed separately, for example for aluminium die casting or larger components. Hot chamber die casting machines are particularly fast for smaller parts made from zinc or selected magnesium alloys.
Stable series production depends on more than the main machine. A complete die casting cell often includes a dosing furnace, metal loader, die spraying machine, extraction robot, temperature control units, conveyor technology and trimming presses.
When buying a used cold chamber die casting machine, clamping force, shot weight, year of manufacture, operating condition, control system, hydraulics, toggle or closing unit, ejector system, die mounting and platen size should be checked carefully.
The shot chamber, plunger, furnace and dosing technology, existing automation, spare parts availability and the possibility of recommissioning the machine as a complete die casting cell are also important factors.
A used cold chamber die casting machine is often part of an automated die casting cell. Depending on the project, dosing furnace, metal loader, die spraying machine, robot, temperature control units, conveyor technology, trimming press and safety enclosure may already be available or can be added to match the production requirements.
FISS Machines supports industrial companies with individual cold chamber machines as well as complete die casting cells. Services include technical evaluation, machine sourcing, dismantling, transport, refurbishment, installation and recommissioning.
FISS Machines supports companies worldwide in buying and selling used cold chamber die casting machines. If a suitable machine is not currently listed online, we can search our international network for suitable offers.
When selling used machines, FISS Machines supports technical evaluation, international marketing, buyer communication and project handling. In addition to brokerage and marketing, direct purchase by FISS may also be an option depending on the project.
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