Ceramic Foam Filter-PZr

About This Project

Alumina Ceramic Filter

Alumina Ceramic Filter from AdTech Metallurgical Materials Co., Ltd has been focusing on research, development, production and marketing of the adhesive ceramic foam filter(CFF) for aluminum alloy casting. The technology of AdTech’s ceramic filter has been widely approved by the market, applied for producing multiple series of aluminum alloys 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.

Alumina Ceramic Filter

Filter-PZr

Assembles for Ceramic Foam Filter:

  • Ceramic Foam Filter
  • Ceramic Fiber Sealing Gasket
  • Filter Bowl

Alumina Ceramic Filter

Application for Ceramic Foam Filter

AdTech’s ceramic foam filter plate is produced basing on carrier with solid reticular structure and combined organic foam pores. The producing procedure is as below, put carrier into the thixotropic alumina slurry, adopt square to center correcting automatic extrusion process, so that slurry evenly deposits in foam skeleton of carrier, after drying solidification, then carrier will turn into final product by roasting formed under 1180 ℃ high temperature. Filter is installed in the filter bowl for filtrating impurity in molten aluminum alloy, which helps to meet the requirement of production in high value-added, high-tech performance aluminum alloy precision casting, such as computer hard drive, PS baseboard for printing, canning materials, fan blades for turbojet engine, etc.

Porous Alumina Ceramic

Advantages for Ceramic Foam Filter

  1. Adopt adsorption principle for filter, can effectively remove big piece inclusions in molten aluminum, and effectively adsorb tiny inclusions.
  2. No broken bits drop out, effectively reduce the pollution of molten aluminum.
  3. Superior thermal shock resistance, improve erosion resistance ability of molten metal.
  4. Automatic flow production, 3 calibration procedures,precision size,fit the filter bowl tightly.
  5. Improve the surface appearance and performance, purify molten aluminum.

Filtration Rate of Ceramic Foam Filter

Filtration Rate of our Ceramic Foam Filter is based on filter’s pore size, inclusion’s size, type (density, wetness performance), and flow speed of molten metal through filter.

Alumina Foam Filters
Graphic (Alu alloy 5082):
Under the microscope can see the magnesia group sticky on PZr filter plate.

Ceramic Filtration

Graphic for adsorption micrometer inclusions.

Sealing gasket for Ceramic Foam Filter

Ceramic filter is surrounded by Sealing gasket, laying between filter and filter bowl, to prevent molten aluminum leaking through interface. AdTech’s filter adopts sealing gasket in 3 different types, fiber paper material, fiber cotton material, expanding cotton material.

Photos for 3 different material Sealing gasket
Standard sizes for Ceramic Foam Filter

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 1550 450-550

Pore size for Ceramic Foam Filter:
Pores amount in any 25.4mm length filter

Mesh NumberPPI 10 20 30 40 50 60
Pore Density(PCS) 8-12 18-22 28-32 38-42 48-52 58-62

 

Pore Mesh Number Range PZr Filter Pore Size Specification
10 20 30 40 50
Minimum Pore Size(um) 1,875 1,066 815 624 477
Maximum Window Size(um) 1,578 1,320 1,010 773 591

Distribution curve of pore size for Ceramic Foam Filter:

Molten Metal Filtration

Filtration Precision for Alumina Ceramic Filter

Pore SizePPI 20 30 40 50 60
Inclusions Diameterum 80 40 20 10 5
Filtration Rate(%) 78 85 88 92 95

Application Data for Alumina Ceramic Filter

Specifications (mm) Effective filtration area() Filtration flow rangekg/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

Foundry Filter

Instructions for Alumina Ceramic Filter

  1. Inspect and clean the surface of filter bowl, keep it clean and intact.
  2. Gently lay the filter in the filter bowl, press sealing gasket around the filter by hand to prevent molten aluminum from dispersing or floating away.
  3. Use electric or gas burning to preheat filter bowl and ceramic foam filter evenly for 15-30 minutes, make sure their temperature close to molten aluminum. The preheating temperature for ceramic foam filter should above 260℃. Expanding cotton will seal after preheating. This procedure makes ceramic foam filter steady fixed in molten aluminum. Preheating also leads ceramic foam filter pores open and avoid occlusion caused by thermal expansion and contraction.
  4. Observe the change of molten aluminum height, hold molten aluminum flow in standard needs. Normal starting molten aluminum height is 100-150mm. The height falls down below 75-100mm when molten aluminum flows, and it will slowly increase later.
  5. Do not hit or shake ceramic foam filter in filtration. At the same time, control molten aluminum flow rate in launder, never to be too much or too little.
  6. Take out ceramic foam filter and clean filter bowl in time after filtering.

Alumina Fiber Board

Storage for Alumina Ceramic Filter
Stored in ventilated and dry environment, moisture proof, do not lay anything on.

Category
Filter&purification series
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