Details
Coldbox, Hotbox, CO₂ or Croning
The process determines binder technology, curing, core box requirements, exhaust air technology and later core quality.
Roeperwerk HN 16 V-E core shooter machine used, KS2604
Year: 2007, sand container 16 l, for production of aluminium parts in hot box process
Core shooters
Core shooting machines are used to produce sand cores for foundries. These cores form cavities, channels, undercuts or complex internal contours in the later casting that cannot be produced by the outer mould alone.
FISS Machines offers used core shooting machines for Coldbox, Hotbox, CO₂ and Croning processes. Depending on the project, individual machines or complete core production systems with sand supply, mixing technology, binder dosing, core box, gassing unit, exhaust air technology and core handling can be offered.
Core production depends on machine, process and system environment
A core shooting machine should not be evaluated in isolation. The decisive factor is the interaction between core production process, shooting unit, core box, sand supply, binder technology, curing and handling.
Shooting volume, pressure and core box
Shooting unit, sand hopper, clamping system, tool mounting and control system must match the core and production volume.
Sand, binder, gas and handling
Sand mixers, binder dosing, gassing unit, amine scrubber, extraction and automation define the actual production process.
Core production in practice
From moulding material to usable sand core
The core is not created by shooting sand alone. A reproducible sequence of sand preparation, core box filling, curing, extraction, inspection and transfer is essential.
Especially with used systems, it should be checked whether the machine, core box, binder system, gas or heating technology and existing peripherals match each other.
Moulding material
Prepare sand and binder
Base sand, binder, hardener and additives are dosed and mixed according to the core production process.
Shooting
Fill the core box with moulding material
The core shooting machine pushes the moulding material into the core box with pressure and ensures uniform filling.
Curing
Harden the core
Depending on the process, curing takes place cold, hot, chemically or through controlled gassing.
Handling
Extract and prepare the core
The finished core is removed, checked, temporarily stored or inserted directly into the casting mould.
Processes for different core requirements
Choosing the right used core shooting machine depends strongly on the process. Core geometry, core weight, cycle time, binder technology, core box and curing method determine which system is suitable.
Coldbox core shooting machines
Coldbox systems are often used for productive core production and complex core geometries. Shooting volume, gassing, exhaust air technology, amine scrubber and core box mounting are important factors.
Hotbox core shooting machines
Hotbox systems work with heated core boxes. Heating capacity, temperature control, tool condition and cycle time are especially important evaluation points.
CO₂ core shooting machines
In the CO₂ process, the core is hardened by gassing. Gas flow, core box, sealing, process reliability and suitable binder technology are relevant here.
Croning systems
Croning systems are used for shell moulds and cores when dimensional accuracy, surface quality and reproducible core quality are decisive.
Which castings require sand cores?
Sand cores are used whenever castings need internal channels, cavities, undercuts or complex internal contours. Without core technology, many casting geometries would not be possible.
Typical examples include engine and pump housings, cylinder heads, valves, hydraulic components, pipe and channel structures as well as technical castings for mechanical engineering, vehicle manufacturing, energy and industrial applications.
What to check when buying a used core shooting machine
When buying a used core shooting machine, it should be checked whether the machine, core box, shooting volume, control system, binder technology and existing peripherals match the planned core production process.
Process: Coldbox, Hotbox, CO₂, Croning or special process
Shooting volume, sand hopper, shooting pressure and core box size
Condition of shooting unit, seals, valves and tool mounting
Core box mounting, clamping system, heating or cooling units
Mixing technology, sand supply, binder and hardener dosing
Gassing unit, exhaust air, amine scrubber or safety technology
Control system, documentation, spare parts and maintenance condition
Dismantling, transport, reassembly and later recommissioning
From single machine to core production centre
Depending on the project, a single used core shooting machine may be sufficient. For higher volumes or more complex cores, however, a complete system setup can be useful: with sand supply, mixing technology, binder dosing, gassing, extraction, inspection and exhaust air technology.
Buy or sell used core shooting machines
FISS Machines supports industrial companies worldwide in buying and selling used core shooting machines. If a suitable machine is not currently listed online, FISS can search its international network and check suitable offers.
When selling used core shooting 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.
