Hot Box Core Shooting Machine is specialized equipment used in the foundry industry to produce sand cores for metal casting. Sand cores are used to form the internal cavities or hollow sections of a metal casting. These machines are widely used in the production of automotive, aerospace, and other precision metal components.
Key Components of the Hot Box Core Shooting Machine:
Core Box (Mold):A metal mold where the sand mixture is shaped into the desired core geometry.
It is heated to accelerate the curing process.
Sand Blowing System:A system to blow or shoot the sand-resin mixture into the core box under pressure.
Ensures the mixture fills all cavities uniformly.
Heating System:The core box is heated (typically 200–350°C) to initiate the curing reaction in the binder.
This heat hardens the sand mixture into a solid core.
Control System:Automates the machine’s operations, such as sand injection, heating, and core ejection.
Core Ejection Mechanism:Safely removes the cured and hardened core from the mold.
How Hot Box Core Shooting Machine Works
Hot Box Core Shooting Machine works by creating sand cores used in the metal casting process. The machine uses a hot box process, which relies on heat and a thermosetting resin binder to cure the sand core quickly and efficiently.
Preparation of Sand Mixture:A sand mixture is prepared using silica sand, a thermosetting resin (binder), and a catalyst or curing agent.
The binder typically used in the hot box process is a combination of phenolic and urea-formaldehyde resins.
Filling the Core Box:The sand mixture is blown or shot into a pre-heated core box (a mold made from metal).
The core box contains cavities shaped like the desired sand core.
Heating and Curing:The core box is heated to a temperature typically ranging from 200–350°C (392–662°F).
The heat activates the chemical curing reaction of the resin, causing the sand mixture to harden and take the shape of the cavity in the core box.
Cooling and Ejection:After curing, the core is allowed to cool slightly to solidify further.
The hardened core is then ejected from the core box, ready for use in the casting process.
Hot Box Core Shooting Machine Performance and Characteristics
- Suitable for producing sand core or moulding sand by heating phenolic resin sand coated sand through electricity or steam.high rigidity and precision, finish good.
- PLC program control, LCD screen parameter setting, process display, fault diagnosis, manual/automatic/point operation, automatic digital display temperature control.
- High frequency quenching hard chromium guide rail with high precision and long service life, the mold can be multi-directional, sealing automatic door to improve the operating environment.
- All movement and core shooting is air operated or driven by pneumatic or hydraulic together.
- 2-6 opening mould model with vertical parting, AT94LS double opening mould, double working station(installing two moulds to make sand cores at the same time), convenient sand core making and mould lifting, improve productivity.
- Precise guiding device of sand shooting tank, high precision and accurate Positioning.
- Feed new sand through pneumatic conveying system.
Hot Box Core Shooting Machine Application
The hot box core shooting machine is used to produce high-quality cores for casting complex and intricate metal components, such as:
Automotive parts (engine blocks, manifolds, cylinder heads).
Aerospace components.
Machinery parts like valves and pumps.
Hot box Core Shooting Machine Advantages
Fast production cycle.
High precision and dimensional accuracy
Suitable for complex core shapes.
Strong and durable sand cores.
Conclusion
Vertical parting hot box sand core shooter machine adopts coated sand as raw material, USES hot core box production process to make sand core, vertical parting, fixed frame in the middle and can be installed in double mode, open and close mould in right and left together, equivalent to dual fixed frames, shooting two sets of mould at a time. The mould mounting dimension is adjustable within a certain range, and adapts to large scale mould. It adopts imported PLC (programmable controller), digital touch screen high-end electronic products, such as high automation, adjustable die temperature digital display, equipped with mold cleaning and coating device, the machine is equipped with pneumatic sand machine, automatically and easily feeds sand. The machine is easy to operate, high automation and high yield in the sand core. It is widely used for the high volume production of small and medium sized castings with high quality and complex appearance.