Product Description

 

Zirconia Ceramic Foam Filter for Steel Castings Filtration

Zirconia ceramic foam filters are determined for filtering of steel and steel alloys up to the temperature of 1700 °C.
Filters are recommended especially for high quality grades of alloys.

Ceramic foam filters offer a simple, reliable and costeffective method to remove inclusions. Filtering with CFF is a supplement to metal treatment within the furnace, such as fluxing and degassing or inline filtration.

Ceramic foam filters have an open pore reticulated structure with very high porosity and surface area to trap inclusions. The open foam structures are compose of ceramic material, such as alumina, mullite or silica. Alumina is the most common filter material. Ceramic foam filters operate in a deep bed filtration mode where inclusions smaller than the pore openings are retained throughout the cross-section of the filter.

CFFs typically are a polyurethane foam coated with a ceramic slurry then dried and fired. During firing, the polyurethane foam dissipates leaving behind a porous ceramic structure. The ceramic can be a phosphate-bonded alumina and pore sizes and thicknesses can vary.

Model Name: NINGXIN-CFF-Z
Application: For the filtration of large scale iron and steel alloy
 

Main Material ZrO2
Working Temperature ≤1700ºC
Color Yellow
Hole density 10/20PPI(PPI=pores per inch)
Porosity(%) 80‐87
Compressive Strength(MPa)  ≥1.5 (Room temperature)
Bulk Density(g/cm3) 0.9‐1.3
Thermal shock resistance ≥3times/1350ºC‐Room temperature

 

Product Description

 

Company Profile

 

 

 

 

Application: Refractory, Industrial Ceramic, Foundry Molten Metal Filtration
Material: Zirconia Ceramic
Type: Ceramic Plates
Samples:
US$ 5.00/Piece
1 Piece(Min.Order)

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cast aluminium

What design considerations are there when working with cast aluminium?

When working with cast aluminium, several design considerations should be taken into account to ensure successful and efficient manufacturing. Here’s a detailed explanation:

1. Wall Thickness: Maintaining uniform wall thickness is crucial in cast aluminium design. Thick sections can lead to slower solidification, increased porosity, and potential shrinkage defects. Conversely, excessively thin sections may result in poor mold filling and insufficient mechanical strength. Design guidelines should be followed to optimize wall thickness and ensure proper solidification during casting.

2. Corner Radii and Fillets: Incorporating generous corner radii and fillets in cast aluminium designs helps minimize stress concentration and prevent the formation of sharp edges. Smooth transitions between wall sections, ribs, and bosses improve the overall strength and integrity of the casting.

3. Draft Angles: Draft angles are necessary to facilitate the removal of the casting from the mold. Adequate draft angles allow for smooth ejection, reducing the risk of damage to the casting and ensuring consistent production. Typically, a minimum draft angle of 1-3 degrees per side is recommended for cast aluminium parts.

4. Rib Design: Ribs are often used to provide additional strength and rigidity to cast aluminium components. Designing ribs with proper thickness, height, and filleting helps prevent distortion and ensures effective heat dissipation during casting and subsequent use.

5. Undercuts and Core Pulls: Complex cast aluminium designs may require the use of cores or slides for creating undercuts or internal features. These features should be designed with care to allow for easy removal of the casting from the mold. Proper consideration of core placement, shape, and release mechanisms is essential to avoid casting defects and ensure smooth production.

6. Parting Line: The parting line is the interface where the two halves of the mold meet. It is important to carefully consider the location of the parting line to minimize the need for additional machining and to ensure good dimensional accuracy. The parting line should be strategically placed to avoid critical features and maintain the overall integrity of the casting.

7. Surface Finish and Texture: Cast aluminium parts often require specific surface finishes and textures for both functional and aesthetic purposes. Design considerations should be given to the desired surface finish, such as smoothness, textures, and the location of parting lines, to achieve the desired appearance and performance of the final product.

8. Material Selection: The selection of the appropriate aluminium alloy for the specific application is crucial. Different aluminium alloys have varying mechanical properties, corrosion resistance, and casting characteristics. Understanding the requirements of the part and selecting the suitable alloy will ensure optimal performance and cost-effectiveness.

9. Tolerances and Machining Allowances: Design tolerances and machining allowances should be carefully defined to accommodate the expected dimensional variations during casting and post-casting processes. It is essential to consider the shrinkage and distortion tendencies of cast aluminium and provide appropriate tolerances to achieve the desired fit and functionality of the final assembly.

10. Testing and Prototyping: Testing and prototyping are essential steps in the design process for cast aluminium parts. Physical prototypes and computer simulations can help identify potential issues, validate the design, and optimize the casting process before full-scale production. Performing thorough testing and evaluation ensures the final design meets the required performance and quality standards.

By considering these design considerations, engineers and designers can optimize the manufacturability, functionality, and performance of cast aluminium components. Collaboration between designers, casting experts, and manufacturers is often valuable to ensure the best outcomes in terms of cost, quality, and efficiency.

cast aluminium

Are there any corrosion-resistant grades of cast aluminium?

Yes, there are corrosion-resistant grades of cast aluminium that are specifically formulated to have enhanced resistance against corrosion. Here’s a detailed explanation:

Cast aluminium alloys are typically composed of aluminium as the primary element and various alloying elements added to enhance specific properties. The choice of alloying elements and their composition can significantly influence the corrosion resistance of cast aluminium. Some commonly used corrosion-resistant grades of cast aluminium include:

  • Aluminium-Silicon Alloys:
  • Aluminium-silicon alloys, such as the popular A356 and A413 grades, are widely used in casting applications due to their excellent corrosion resistance. These alloys contain silicon as the primary alloying element, which forms a protective oxide layer on the surface of the aluminium, enhancing its resistance to corrosion caused by exposure to moisture, salts, and other corrosive elements.

  • Aluminium-Magnesium Alloys:
  • Aluminium-magnesium alloys, such as the 5000 series (e.g., 5052 and 5083), are known for their good corrosion resistance. The addition of magnesium provides a self-healing property to the aluminium, as the magnesium reacts with oxygen to form a protective magnesium oxide layer. This oxide layer helps prevent further corrosion and degradation of the aluminium surface.

  • Aluminium-Zinc Alloys:
  • Aluminium-zinc alloys, such as the 7000 series (e.g., 7075), exhibit high strength and good corrosion resistance. The addition of zinc enhances the corrosion resistance by forming a protective zinc oxide layer on the surface of the aluminium. These alloys are commonly used in applications where both strength and corrosion resistance are critical, such as in aerospace and military industries.

  • Aluminium-Copper Alloys:
  • Aluminium-copper alloys, such as the 2000 series (e.g., 2024), are known for their high strength and moderate corrosion resistance. The addition of copper improves the overall strength and mechanical properties of the aluminium, while also providing some degree of corrosion resistance. However, these alloys may require protective coatings or surface treatments for enhanced corrosion protection in more aggressive environments.

It’s important to note that while these corrosion-resistant grades of cast aluminium offer improved resistance to corrosion, they may still require proper maintenance and care to ensure their long-term performance. Factors such as exposure to harsh environments, temperature variations, and the presence of corrosive agents can still affect the corrosion resistance of cast aluminium, albeit to a lesser extent compared to non-resistant grades.

When selecting a specific grade of cast aluminium for a particular application, it is essential to consider the environmental conditions, intended use, and required level of corrosion resistance. Consulting with material suppliers or experts in the field can provide valuable guidance in choosing the most suitable corrosion-resistant grade of cast aluminium for a given application.

cast aluminium

Can cast aluminium be recycled, and how is it done?

Yes, cast aluminium can be recycled, and the recycling process involves several steps. Here’s a detailed explanation:

Recycling cast aluminium helps conserve resources, reduce energy consumption, and minimize waste. The recycling process typically follows these steps:

  1. Collection:
  2. Cast aluminium scrap is collected from various sources, including discarded products, manufacturing waste, and post-consumer items. This scrap is then transported to recycling facilities for processing.

  3. Sorting:
  4. At the recycling facility, the collected cast aluminium scrap is sorted based on its alloy composition. Different aluminium alloys may have varying chemical compositions and properties, so sorting helps ensure that the recycled material is used appropriately.

  5. Shredding and Melting:
  6. The sorted cast aluminium scrap is shredded into smaller pieces or chips to increase its surface area. Shredding facilitates the melting process and allows for efficient heat transfer during recycling. The shredded aluminium is then loaded into a melting furnace.

  7. Melting and Purification:
  8. In the melting furnace, the shredded cast aluminium is heated to high temperatures, typically around 660°C (1220°F), causing it to melt. During the melting process, impurities and contaminants are removed through various purification techniques. This helps ensure that the recycled aluminium meets the required quality standards.

  9. Casting:
  10. Once the molten aluminium is purified, it is cast into ingots or other desired forms. The molten aluminium is poured into molds and allowed to cool and solidify, forming new aluminium products or raw material for further processing.

  11. Fabrication:
  12. The cast aluminium ingots or recycled aluminium sheets can be further processed and fabricated into new products. This may involve techniques such as extrusion, rolling, forging, or machining to shape the recycled aluminium into desired forms.

  13. Reuse or Manufacturing:
  14. The recycled cast aluminium can be used for various applications. It can be incorporated into new products, such as automotive components, building materials, packaging, or consumer goods. Alternatively, it can be sold to manufacturers who require aluminium as a raw material for their production processes.

  15. Continued Recycling:
  16. Aluminium has the advantage of being infinitely recyclable without any loss in quality. Recycled cast aluminium can be recycled again and again, allowing for a sustainable and circular material flow.

The recycling of cast aluminium helps conserve natural resources, reduces the need for primary aluminium production, and reduces the environmental impact associated with mining and refining raw aluminium. It also saves energy, as recycling aluminium requires significantly less energy compared to producing aluminium from ore.

China Hot selling Foundry Material Molten Aluminum Filtration Zirconia Cast Filter 150X150X30mm Impeller Brass  China Hot selling Foundry Material Molten Aluminum Filtration Zirconia Cast Filter 150X150X30mm Impeller Brass
editor by CX 2023-12-04