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Oil and air lubricate casting mould including casting platform, internally guided hydraulic semi continuous casting machine, hydraulic tilting system, oil and air supply device, cooling device and so on.
Oil air lubrication casting technology is a Gas Cushing aluminum billet casting system that uses an oil air mixture for lubrication, mainly used for casting metal materials such as copper and aluminum.Oil air lubrication casting technology reduces friction when molten metal is injected into the mold through the action of gas pressure and lubricant, thereby improving the surface quality of castings and even meeting the requirements of arts and crafts.
In the process of oil and air lubricate casting, multiple process parameters need to be controlled to ensure the quality and efficiency of the castings. Some common process parameters include:
- Process temperature: determines the fluidity and solidification process of the metal. The casting temperature of different metals varies and needs to be adjusted according to specific circumstances.
- Pressure: One of the important parameters that can affect metal flow, solidification, and surface quality. The higher the pressure, the better the surface quality of the casting, but the higher the equipment requirements.
- Lubricant type: In the process of oil air sliding casting, lubricants can reduce the friction between metal and mold, protect casting equipment and casting surfaces. Common lubricants include paraffin wax, silica, etc.
- Lubricant pressure: Similar to the type of lubricant, the pressure of the lubricant can also affect the friction and surface quality between the metal and the mold.
- Injection speed: determines the speed at which metal fills the mold. Too fast speed can easily generate bubbles and defects, while too slow speed can affect production efficiency.
|
Process temperature |
700-1300℃ |
|
Pressure |
10-50 Mpa |
|
Lubricant type |
Paraffin, silica, etc |
|
Lubricant pressure |
0.1-5 Mpa |
|
Injection speed |
Adjust according to specific circumstances, usually within 10-30 seconds. |
|
Casting diameter |
Φ90mm (3.5" inch --Φ330mm (13"inch) |
|
Bending degree |
1.0mm/m full length≤4mm |
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Gas supply pressure |
0.65-0.95MPA |
|
Fuel supply pressure |
4.5MPA |
|
Filtering accuracy |
1μm |
|
Maximum casting weight |
50000 kg |
The internally guided hydraulic semi continuous casting machine controls the casting process through a hydraulic system. The hydraulic system includes a power unit, an internal hydraulic cylinder lifting speed control circuit, a manual emergency descent control circuit, a flow channel and casting platform lifting system control circuit, and auxiliary circuits (such as self filtration). These subsystems are matched and linked to each other for casting, ensuring the accuracy and quality of the casting ingot.
- Tilt angle: 0-85°
- Quantity required for casting cooling water: max. 400/h
- Casting platform: horizontal drift ≤ 2mm vertical drift: ≤ 2m;
- Platform drift: 1.5mm/30min
- Hydraulic working medium: L-HM46 hydraulic oil/AW46 Mobil
Oil and air automatic supply system including dryer, Siemens control, proportional control, air supply device, oil supply and oil lubrication.
Oil and air casting mould advantages:
The speed of oil air lubrication casting is increased by 15-20% compared to hot top casting, thus improving production efficiency.
Smaller grain size and the segregation layer of aluminum billets are very thin.
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