Product Overview

Our alumina ceramic foam filter plates are high‑efficiency molten‑metal filtration components, sintered from high‑purity alumina raw material via the organic foam replica process.

They feature an open three‑dimensional interconnected network structure, built to withstand high‑temperature non‑ferrous metal casting environments without secondary contamination to molten metal.

Material

Main raw material is high‑purity alumina (Al₂O₃).

Optimized formula delivers outstanding chemical inertness against molten aluminum and aluminum alloys.

It maintains stable physical performance under sustained high‑temperature conditions, with excellent thermal‑shock resistance to resist cracking from sudden temperature changes during pouring.

Core Function

1. Impurity interception & adsorption: Captures and absorbs oxide slag, non‑metallic inclusions and micro‑particles suspended in molten metal.

2. Flow conditioning: Converts turbulent molten‑metal flow into steady laminar flow, reducing oxide re‑formation during pouring.

3. Avoid secondary pollution: Does not shed residues, keeping the molten alloy clean throughout filtration.

Available Models & Specifications

● Pore density (PPI): 10 / 20 / 30 / 40 / 50 / 60 PPI. Lower PPI delivers higher flow capacity; higher PPI provides finer filtration accuracy.

● Porosity: 80‑90 % open porosity.

● Working temperature: Up to 1100 °C for continuous service.

● Dimensions: Standard square & round sizes in stock; fully customizable on customer drawings for special shapes and sizes.

●  Custom service: thickness, chamfer and edge treatment are supported.

Application

✅Specially developed for aluminum and aluminum‑alloy casting processes, widely used in gravity casting, low‑pressure casting, semi‑continuous casting, DC casting, sand casting and investment casting.

✅Typical end‑products include aluminum profiles, automotive aluminum parts, aluminum billets, slabs and high‑quality aluminum castings.

Filtration Performance & Effect

✅It removes micron‑scale non‑metallic inclusions from molten aluminum.

✅Using this filter plate effectively minimizes casting defects such as slag inclusions, porosity and blisters.

✅Castings gain better surface finish, more uniform internal microstructure, and improved mechanical properties including tensile strength and elongation.

✅The overall product yield rises while scrap rates drop significantly.

Advantages of Hebei Cangchen's Filter Plate

We strictly control raw‑material purity and sintering parameters for consistent batch‑to‑batch performance.

Our filter plates feature stable compressive strength and reliable thermal‑shock resistance, lowering the risk of filter rupture during on‑site pouring.

We offer flexible customization for PPI, dimension and edge finishing to match your foundry's actual casting conditions.

Supported by ISO system certification, REACH & RoHS and complete material test documentation, our products are exported to global markets with proven high customer satisfaction and repeat‑order rates.

Our technical team provides pre‑sales parameter selection guidance and after‑sales support for foundry applications.

MSDS Certification

MSDS certification of alumina ceramic foam filter plate!