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Offline adtech  
#1 Gönderildi : 26 Mayıs 2022 Perşembe 04:06:21(UTC)
adtech


Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 6.4.2022(UTC)
Mesajlar: 127
United Arab Emirates

porous ceramic filter is a new type of filter with low density, high porosity and



a three-dimensional network framework structure. It is widely used in the



aluminum processing industry to filter molten aluminum to improve the quality of



aluminum.

porous ceramic filter can effectively remove the non-metallic solid mixture in the aluminum and



aluminum alloy melt, reduce the trapped gas, and provide laminar flow to make the



filtered aluminum and aluminum alloy cleaner.

Clean metal can improve the quality of castings, reduce scrap, reduce inclusion



defects, improve the quality of aluminum alloy and other non-ferrous alloy



castings, and reduce the cost of castings. Its maximum use temperature is



1200°C.



porous ceramic filter

porous ceramic filter has the advantages of high porosity, high mechanical



strength, stable chemical performance, strong corrosion resistance, high



adsorption rate, good filtering function, and good thermal shock resistance.

It is mainly used in the purification process for the production of non-ferrous



alloys such as aluminum and aluminum alloys. It can also be used as a gas-solid,



liquid-solid separation medium, catalyst carrier, burner, sound absorption and



environmental protection.

A gasket is installed on the edge of theporous ceramic filter ;the gasket ensures



the correct and tight position of the filter in the filter box.

There are different types of gaskets, such as ceramic fiber gaskets, etc., and



porous ceramic filter without gaskets can also be provided.

These types of filters have been favored by customers from Europe, the Middle



East and the United States for many years.



Product Features of porous ceramic filter High strength, no loose ceramic



particles or powder

Three-dimensional connected mesh structure with high porosity.

The surface area of ​​slag collection is large, and the internal surface area of ​​



filtering is large,

Excellent thermal shock resistance.

Various sizes, shapes and apertures are available.

Particles larger than the pore size are captured on the top of the ceramic foam



filter

The smaller particles will be trapped on the filter cake by the larger particles

The finer particles are trapped in the pores of the filter



Cast aluminum billets include smelting, purification, impurity removal,



degassing, slag removal and casting processes, and homogenization processes.

The main process is:

(1) Ingredients: According to the specific alloy grade to be produced, calculate



the addition amount of various alloy components, and reasonably match various raw



materials.

(2) Smelting: The prepared raw materials are added to the smelting furnace to



melt according to the process requirements, and the slag and gas in the melt are



effectively removed by means of degassing and refining slag.

(3) Casting: Under certain casting process conditions, after the molten aluminum



is cooled, it is cast into various specifications of round casting rods through



the deep well casting system.
Sponsor
Offline adtech  
#2 Gönderildi : 27 Mayıs 2022 Cuma 09:45:44(UTC)
adtech


Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 6.4.2022(UTC)
Mesajlar: 127
United Arab Emirates

porous ceramic filter
is used to filter and purify non-metallic impurities in molten aluminum, which is very important to ensure the quality of aluminum products.

Molten metal usually contains impurities in the form of inclusions, which are not removed during the refining process. In order to obtain advanced metal raw materials for thin plate manufacturing, fine wire drawing and precision casting, it is usually necessary to pass molten metal through a filter to remove these inclusions.

In particular, molten aluminum often contains entrained solids, which are harmful to the final cast metal product. These entrained solids appear as inclusions in the final cast product after the molten metal is solidified, and cause the ductility of the final product to decrease or the smoothness and anodizing properties of the final product are poor. Inclusions may come from several sources. For example, inclusions may come from a surface oxide film that is broken and entrained in the resulting molten metal. In addition, inclusions may come from insoluble impurities, such as carbides, borides, etc. or corroded furnace and trough refractories.

Provide reticulated organic polymer foam.

Impregnate the foam with the aqueous slurry.

Dry and heat the impregnated polymer foam to remove its organic components.

It is fired at a high temperature to produce the ceramic foam filter.

Porous ceramic filter uses elastic sealing devices or gasket-type seals to seal the filter plate in place. The seal surrounds the filter plate at the beveled corner of the filter plate.

The gasket seal ensures that there is no leakage in the installation and provides an effective separation medium, which is essential for easy disassembly.

In addition, since gaskets or sealing devices prevent metal from entering the sealing surface of the holder unit, their use greatly simplifies cleaning and effectively extends the life of the unit by eliminating the problem of metal corrosion.

In addition, due to its elasticity, the gasket can provide sufficient friction to fix the filter body in the proper position in the bracket or filter.

No need to use other types of compression devices.

The elastic sealing device should not wet the specific molten metal, resist its chemical corrosion, and should be fire-resistant enough to withstand higher operating temperatures.
Offline adtech  
#3 Gönderildi : 30 Mayıs 2022 Pazartesi 10:03:49(UTC)
adtech


Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 6.4.2022(UTC)
Mesajlar: 127
United Arab Emirates

porous ceramic filter

The porous ceramic filter is widely used in various occasions in aluminum foundry factories. The drawing is an a porous ceramic filter
Its excellent non-stick aluminum characteristics, no aluminum hanging, low heat absorption, no need to preheat before use. No pollution to the product.

The surface coating treatment of the product can obtain the effect of glaze, non-stick aluminum, no aluminum hanging, completely avoiding the adverse effect on silicon melt (including other metals). The product has excellent non-stick aluminum properties while ensuring the interaction between the metal melts between different castings.

The installation of the porous ceramic filter is simple and convenient. The product has a long service life; except for improper use of artificial use.

The porous ceramic filter is an inorganic material, and the main crystalline phase is xonotlite, which has stable physical and chemical properties, and the product does not adhere to aluminum water.



Product use: AdTech a luminum water slag blocking device is used together with casting mold. By setting the slag ring, the filtered aluminum liquid first enters the annular range formed by the slag ring body, and slag such as oxidation slag may be brought in. In the crystallizer, the slag blocking device body can intercept the slag such as oxidized slag, and prevent it from flowing into the inner side of the slag blocking device, and control the scum such as oxidized slag to be outside the slag blocking device, thereby reducing the aluminum alloy ingot. Risk of contamination by slag.

The advancement of alumina and DC electrolysis technology in the aluminum industry production laid the foundation for the industrial scale development of aluminum production. By the end of the 19th century, the production cost of aluminum began to decline significantly, and aluminum itself has become a common common metal. In the early 20th century, in addition to daily necessities, aluminum was mainly used in the transportation industry. In 1901, aluminum panels were used to make automobile bodies. In 1903, Alcoa supplied aluminum parts to Wright Brothers.

Aircraft. Automobile engines began to use aluminum alloy castings, and the shipbuilding industry also began to use aluminum alloy thick plates, profiles and castings. With the increase in aluminum production and advances in science and technology, aluminum is used in other industrial sectors (such as medical equipment, aluminum printing plates and refining). The use of deoxidizers for steel, packaging containers, etc. is also becoming more widespread, greatly stimulating the development of the aluminum industry.

In 1910, the world’s aluminum production increased to more than 45,000 tons. Large-scale production of aluminum foil and other new products, such as aluminum hoses, aluminum furniture, aluminum doors and windows and curtain walls, and various new products such as aluminum cookware and household aluminum foils have also been successively produced. The emergence of aluminum has made a big step forward in the popularity of aluminum. In 1906, Wilm, Germany invented a hard aluminum alloy that doubled the strength of aluminum and was used extensively in aircraft manufacturing and other arms industries during the First World War. Since then, aluminum alloys with different compositions and heat treatment conditions have been developed. These alloys have different characteristics and functions, which greatly expand the use of aluminum and enable the rapid application of aluminum in industrial sectors such as construction, automotive, railway, shipbuilding and aircraft manufacturing. development of.

With the development of the aluminum industry, more and more corresponding filter slag products are on the market, and these products require more challenges for the porous ceramic filter
Offline adtech  
#4 Gönderildi : 31 Mayıs 2022 Salı 05:59:33(UTC)
adtech


Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 6.4.2022(UTC)
Mesajlar: 127
United Arab Emirates

porous ceramic filter
thermal performance heat resistance temperature 1100 ℃, maximum use temperature 1000 ℃, continuous use temperature 800 ℃.

Thermal conductivity 0.77W / m.k at 720 ℃, permanent linear shrinkage less than 0.6% after 760 ℃ for 24 hours.

Appearance size Plug type Length ± 3㎜, thickness ± 1㎜

The surface quality of the single-block defect area is less than 25 mm2, and the height of the unevenness is not higher than 2㎜ The outer surface does not have large damage and lack of fastness.

porous ceramic filter process

Furnace

The correct furnace loading method is very important to reduce the metal loss and shorten the melting time.

For the reverberatory furnace, lay a layer of aluminum ingot on the bottom of the furnace, put the easily burnable material, and then press the aluminum ingot.

The lower melting point of the furnace charge material is loaded with the upper layer, so that it melts at the earliest, and it flows down to cover the easily burnable material below, thereby reducing the aluminum melting loss.

Various charge materials should be evenly and evenly distributed.



Melting

The melting process and melting speed have an important influence on the quality of the aluminum ingot.

When the charge is heated to soften the bed, the flux should be properly covered. Care should be taken to prevent overheating during the melting process. After the charge level of the charge is horizontal, the melt should be properly stirred to make the temperature consistent, and it is also conducive to accelerated melting.

Too long smelting time not only reduces the furnace production efficiency, but also increases the melt gas content, so when the smelting time is too long, the melt should be refined.

Slag

When the charge is completely melted to the melting temperature, the slag can be stripped.

Before slagging, powdered flux should be sprinkled first (sodium-free flux should be sprinkled for high-magnesium alloys).

The dross removal should be as thorough as possible, because the presence of dross easily pollutes the metal and increases the gas content of the melt.

After adding magnesium and beryllium slag, the magnesium ingot can be added to the melt, and the flux should be added to cover it.

For high-magnesium alloys, 0.002% to 0.02% of beryllium should be added to prevent magnesium burning.

Beryllium can be obtained from sodium beryllium fluoride by metal reduction method. Sodium beryllium fluoride is added by mixing with flux.

porous ceramic filter supplier from China-sales@adtechamm.com

Stir

There should be sufficient time for stirring before sampling and after adjusting the ingredients.

Stirring should be stable without damaging the oxide film on the melt surface.

Sampling

After the melt is fully stirred, samples should be taken immediately for pre-furnace analysis.

Adjust ingredients

When the ingredients do not meet the requirements of the standard, they should be fed or diluted.

Melt Converter

After the composition is adjusted, when the melt temperature meets the requirements, the surface scum is stripped, and the converter can be converted.

Melt refining

Different metamorphic components have different purification and metamorphic methods.
Offline adtech  
#5 Gönderildi : 6 Haziran 2022 Pazartesi 08:36:51(UTC)
adtech


Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 6.4.2022(UTC)
Mesajlar: 127
United Arab Emirates

porous ceramic filter is authorized by www.adtechamm.com to sell alumina foam ceramic filters to local aluminum smelters and foundries in Iran.

The alumina porous-ceramic-filter-product
is installed on the CFF BOX machine to filter the liquid impurities of the aluminum alloy to cope with the high added value and high technical performance of the aluminum alloy in the precision casting production of transportation and transportation.


Casting Filter Agent must understand that the quality of aluminum melt is very important, it strongly affects the performance of the next processing and the quality of the final product. Therefore, all countries in the world have a great desire for the refining of aluminum melt.

There are many reasons for aluminum pollution. On the one hand, during the melting process, aluminum is exposed to the atmosphere in the furnace in a molten or semi-molten state, which is easily oxidized, easily reacts with water vapor to absorb hydrogen, and easily forms various non-forms. -Metal slag (such as coated parts, chlorides, and carbides in flux, etc.) and large intermetallic particles.

On the other hand, some waste products that constitute the charge will introduce some non-aluminum impurities during the recycling process.

Because the waste comes from process waste, geometric waste, and off-site waste from various factory processes, the route is different, the composition is complicated, and the quality is not high.

These impurities often generate bubbles and inclusions in the slab, which seriously affect the purity of the molten metal, and further affect the processing performance, mechanical properties, corrosion resistance, and product appearance quality.

Nowadays, there are many ways to remove these harmful substances and purify molten aluminum.

The different methods, these methods can be divided into two categories: in-furnace purification and continuous out-of-furnace treatment (that is, online treatment).

According to different functions, it can be divided into main degassing or slag removal. porous ceramic filter (www.adtechamm.com) introduced the use of porous ceramic filter plates to continuously filter molten aluminum. External continuous treatment, the main purification operation is slag removal.

The ceramic filter for casting has a certain strength mesh structure, which can withstand the pressure difference of the metal liquid surface and the impact of the metal flow, but it is fragile and fragile. Because this material has a precise structure, uniform quality, wide surface, and excellent filtering effect.
Offline adtech  
#6 Gönderildi : 7 Haziran 2022 Salı 05:28:20(UTC)
adtech


Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 6.4.2022(UTC)
Mesajlar: 127
United Arab Emirates

porous ceramic filter from AdTech Metallurgical Materials Co., Ltd has been focusing on research, development, production, and marketing of the adhesive porous ceramic filter(CFF) for aluminum alloy casting Since 2012.

The technology of AdTech porous-ceramic-filter-product
has been widely approved by the market and applied for producing multiple series of aluminum alloys products, such as PS baseboard for printing, canning materials, flexible packaging materials, railway vehicles, aerospace products, cables, electrical wires and other high-precision filtration and purification for casting aluminum alloy.

Application for porous ceramic filter

AdTech Al2O3 Foam Foundry Filter is produced based on the carrier with solid reticular structure and combined organic foam pores. The producing procedure is as below, put the carrier into the thixotropic alumina slurry, adopt square to center correcting automatic extrusion process, so that slurry evenly deposits in the foam skeleton of the carrier, after drying solidification, the carrier will turn into the final product by roasting formed under 1180 ℃ high temperature. A 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.

Advantages of porous ceramic filter

Adopt the adsorption principle for the filter, 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, and precision size fit the filter bowl tightly.

Improve the surface appearance and performance, and purify molten aluminum.

porous ceramic filter is installed and used. In general, the following aspects need to be noted

1. Use the filter plate correctly:

The size of the filter plate and the number of holes must be selected in consideration of the flow rate range of the specific casting type, the maximum liquid level of the metal during filtration, the total filtration amount, and the cleanliness of the original aluminum liquid.

2. Pre-melt filtration treatment can not be ignored:

Such as molten aluminum furnace and holding furnace normal slag, cleaning furnace; furnace refining. In particular, an in-line degassing device is still necessary because it not only reduces the hydrogen content of the melt but also removes some of the non-metallic inclusions.

3. The filter plate must be compatible with the square refractory block:

The two are adapted to seal, so as to prevent the metal from flowing into the casting box from the gap without being filtered, and also avoid the failure of the foam filter plate to float in the aluminum water due to the excessive light weight.

4. Preheat before use:

Preheat to remove moisture and facilitate initial transient filtration. Preheating can be carried out using electrical or gas heating. Under normal circumstances, it takes about 15 minutes.

5. During normal filtration, no slag is required to avoid knocking and vibrating the filter plate. At the same time, the launder should be filled with aluminum water to avoid too many worries about aluminum water.

6. After casting, drain the metal in the flow cell and filter plate. There is a vibrator abroad that is placed on the filter plate and shaken for one minute to shake off about 75% of the remaining liquid metal from the filter plate.

7. Finally clean the perimeter and remove the filter plate after solidification.

Offline adtech  
#7 Gönderildi : 7 Haziran 2022 Salı 10:31:39(UTC)
adtech


Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 6.4.2022(UTC)
Mesajlar: 127
United Arab Emirates

the porous-ceramic-filter-product
has a number of key advantages that can improve the quality of high-quality aluminum castings. These include:

Machined to tight dimensional tolerances
Excellent strength and thermal properties
Resistant to molten aluminum attack
Available in various sizes and grades
Reduced scrap
The better surface finish of castings
Increased metal quality
Foam ceramic is a new type of industrial ceramic product with low bulk density (0.25~0.65) g/cm3, high porosity (60%~90%), and a three-dimensional network structure. Due to its excellent properties such as high-temperature resistance, strong chemical corrosion resistance, high porosity, and large surface area, foam ceramics are widely used in metal melt filtration to remove undesirable non-metallic inclusions in the melt.

Why Choose a porous ceramic filter?

The existence of non-metallic inclusions is not conducive to the production of high-quality castings. In the presence of inclusions and oxide scale, mechanical properties are easily lost. The mechanical properties of high-strength aluminum alloys are very sensitive to defects in castings.

The molten aluminum filtration with a ceramic foam filter can effectively reduce the level of inclusions and the subsequent notch effect caused by inclusions.

AdTech uses the concept of ceramic foam structure as the filter medium, and our quality is the best. We offer filters in sizes from 7″ to 26″ and all common porosities between PPI 10 and 70.

The ceramic foam filter can be made by a specific procedure, with unique bone frame holes, just like the foam shape (called three-dimensional communication channels) and countless holes that can only be found in a magnification microscope.

Ceramic foam filters for foundry are mainly used to filter aluminum and aluminum alloys. With their excellent resistance to molten aluminum erosion and corrosion, they can effectively remove inclusions, reduce trapped gas and provide laminar flow, so that the filtered metal is cleaner. Cleaner metals will produce higher-quality castings, less scrap, and fewer inclusion defects, all of which help increase profits.
Offline christinawang  
#8 Gönderildi : 9 Haziran 2022 Perşembe 10:37:10(UTC)
christinawang


Sıralama: Üye

Madalyalar: Yeni üye: 10

Katılan: 8.3.2022(UTC)
Mesajlar: 60
China
Konum: Zhengzhou City, Henan Province, China

porous-ceramic-filter-product
for efficient deep slag removal technology

Research and development of low-cost, easy-to-operate ultra-fine pore size, high-strength porous ceramic filter that do not drop ceramic particles (such as Adtech Cff), and researched the patented technology of two-stage filtration of deep filter residue.

porous ceramic filter is the best choice for high-quality aluminum, and it is a good measure to solve the problem of pinholes, burrs, and black spots.

Two-stage filtering feature

Put porous ceramic filter and 40 PPI Cff up and down in the same filter box, and design the two-stage spacing according to the flow rate. According to product requirements, single or double can be flexibly used.

Two-stage filtering effect

When aluminum passes through the first-stage distribution-integration process, it is a very good alloying process. At the same time, according to the theory of heterogeneous polymerization, the original 40 PPI Cff cannot capture the particles. The particles grow up and are not decomposed and are captured by the second stage porous ceramic filter

Therefore, two-stage can achieve deep purification.

Two or more filters

It is the superposition of multiple filtering effects of a single filter plate, which is better than the filtering effect of a single filter plate.

However, the filtration accuracy is limited. Although aluminum is a distribution-integration process when it passes through, it is conducive to alloying treatment. At the same time, the Tero phasic polymerization grows into metastable coarse particles, and the fluid diffuses and decomposes into particles. The 60ppi filter plate cannot be captured.

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