Ceramic Foam Filter – PAL
About This Project
Ceramic Foam Filter – PAL
Ceramic Foam Filters from AdTech Metallurgical Materials Co., Ltd has been focusing on research, development, production, and marketing of the adhesive Alumina Ceramic Foam Filter(CFF) for aluminum alloy casting Since 2012.
The technology of AdTech Alumina Ceramic Foam Filter has been widely approved by the market and applied for producing multiple series of aluminum alloy products, such as PS baseboard for printing, canning materials, flexible packaging materials, railway vehicle, aerospace products, cables, electrical wires and other high-precision filtration and purification for casting aluminum alloy.
Assembles for Ceramic Foam Filter:
- Ceramic Foam Filter
- Ceramic Fiber Sealing Gasket
- Filter Bowl
Application for Ceramic Filter
Ceramic foam filter for foundry is produced based on the carrier, which has a solid reticular structure and combined organic foam pores. The production procedure is as below, put the carrier into the thixotropic alumina slurry, adopt square to center correcting automatic extrusion process, so that the slurry evenly deposits in the foam skeleton of the carrier, after drying solidification, then the carrier will turn into the final product by roasting formed under 1180 ℃ high temperature.
A ceramic Foam Filter is installed in the filter bowl to filter impurities in molten aluminum alloy. This helps to meet the requirements of production in high-value-added, high-tech performance aluminum alloy precision casting, such as computer hard drives, PS baseboards for printing, canning materials, fan blades for turbojet engines, etc.
Advantages of Ceramic Foam Filter
- Adopt the adsorption principle for Ceramic Foam Filter, which can effectively remove big piece inclusions in molten aluminum, and effectively adsorb tiny inclusions.
- No broken bits drop out, effectively reducing the pollution of molten aluminum.
- Superior thermal shock resistance improves the erosion resistance ability of molten metal.
- Automatic flow production，3 calibration procedures， precision size， fit the filter housing tightly.
- Improve the surface appearance and performance, and purify molten aluminum.
Inspection Method for Ceramic Foam Filter
Sealing gasket for Ceramic Foam Filter:
The ceramic Foam Filter is surrounded by a Sealing gasket, laying between the filter and filter bowl, to prevent molten aluminum from leaking through an interface. AdTech’s filter adopts sealing gasket in 3 different types, fiber paper material, fiber cotton material, and expanding cotton material.
Photos for 3 different material Sealing gasket
Standard sizes for Ceramic Foam Filters:
Dimension (± 3 mm ):
7x7in 9x9in 12x12in 15x15in 17x17in 20x20in 23x23in 26x26in
Thickness:
50 ± 2 mm
Bevel Angle:
17.5± 1.5°
Special Dimension:
square, rectangular, round, trapezoidal, abnormal, or customized as per the requirement.
Technical Parameters:
| Item | Density （g/cm³） |
Rupture Modulus （816℃ /Mpa） |
Comprehensive Strength （Mpa） |
Operating Temperature （℃） |
Sealing gasket expanding temperature （℃） |
| Index | 0.45 | 5.5 | 0.8-1.0 | 1350 | 450-550 |
Pore size for Ceramic Foam Filter:
Pores amount in any 25.4mm length filter:
| Mesh Number（PPI） | 10 | 20 | 30 | 40 | 50 | 60 |
|---|---|---|---|---|---|---|
| Pore Density(PCS) | 8-12 | 18-22 | 28-32 | 38-42 | 48-52 | 58-62 |
The distribution curve of pore size:
Filtration Precision for Ceramic Foam
| Pore Size（PPI） | 20 | 30 | 40 | 50 | 60 |
|---|---|---|---|---|---|
| Inclusions Diameter（um） | 80 | 40 | 20 | 10 | 5 |
| Filtration Rate（％） | 78 | 85 | 88 | 92 | 95 |
Application Data for Ceramic Foam Filters
| Specifications (mm) | Effective filtration area(％) | Filtration flow range（kg/min） |
|---|---|---|
| 7in(178*178*50) | 75 | 22-56 |
| 9in(229*229*50) | 75 | 25-80 |
| 12in(305*305*50) | 80 | 50-156 |
| 15in(381*381*50) | 85 | 85-252 |
| 17in(432*432*50) | 86 | 110-335 |
| 20in(508*508*50) | 88 | 160-478 |
| 23in(584*584*50) | 89 | 210-640 |
| 26in(660*660*50) | 90 | 276-830 |
Packing Specification for Ceramic Foam Filter Standard pallet, quantified packaging, and approximate weight
| Standard Pallet, Quantitative Packaging and Weight | |||||
| Filter Dimention (mm) |
Filter QTY per Case (Pcs) |
Case QTY per Pallet (Case) |
QTY per Pallet (Pcs) |
Pallet Dimension (mm) |
Pallet General Weight (Kg) |
|---|---|---|---|---|---|
| 660x660x50(26″) | 4 | 8 | 48 | 1100*1100*2200 | 490 |
| 584x584x50(23″) | 5 | 12 | 60 | 950*950*2050 | 510 |
| 508x508x50(20″) | 5 | 18 | 90 | 1100*900*1720 | 470 |
| 432x432x50(17″) | 5 | 24 | 120 | 1100*1100*1670 | 450 |
| 381x381x50(15″) | 5 | 24 | 120 | 1100*1100*1540 | 430 |
| 305x305x50(12″) | 10 | 16 | 160 | 1000*1000*1550 | 350 |
| 228x228x50(9″) | 10 | 20 | 200 | 1100*1100*1400 | 310 |
| 178x178x50(7″) | 10 | 20 | 200 | 1100*1100*1400 | 220 |
Instructions for Ceramic Foam Filter
- Inspect and clean the surface of the filter housing, keep it clean and intact.
- Gently lay the filter in the filter housing, and press the sealing gasket around the filter by hand to prevent molten aluminum from dispersing or floating away.
- Use electric or gas burning to preheat the filter housing and ceramic foam filter evenly for 15-30 minutes, ensuring their temperature is close to molten aluminum. The preheating temperature for the ceramic foam filter should be above 260℃. Expanding cotton will seal after preheating. This procedure makes the ceramic foam filter steadily fixed in molten aluminum. Preheating also opens ceramic foam filter pores and avoids occlusion caused by thermal expansion and contraction.
- Observe the change of molten aluminum height, and hold molten aluminum flow in standard needs. Normal starting molten aluminum height is 100-150mm. The height falls below 75-100mm when molten aluminum flows, and it will slowly increase later.
- Do not hit or shake ceramic foam filter infiltration. At the same time, control the molten aluminum flow rate in the launder, never to be too much or too little.
- Take out the ceramic foam filter and clean the filter housing in time after filtering.
Storage:
Stored in a ventilated and dry environment, moisture-proof, do not lay anything on.