Fine 50 Ppi Silicon Carbide Ceramic Foam Filter for Electronic Heat Sink Casting

Product Description

Product Overview

Silicon Carbide (SiC) Ceramic Foam Filter for Foundry Applications. This high-performance filter is engineered to enhance the purity and mechanical properties of castings. Manufactured from high-purity silicon carbide, it features a unique three-dimensional network structure that effectively traps non-metallic inclusions (such as slag and oxides) in molten metal, reduces turbulence, and promotes a stable laminar flow during pouring. This significantly minimizes casting defects like gas holes and slag inclusions .

The product, specified as a square with a  length of 70mm,width of 70mm, thickness of 20mm, and a pore density of 20 PPI, is suitable for ductile iron, gray iron, and other casting processes. It withstands high temperatures up to 1550 ℃ ,  while maintaining excellent structural stability and thermal shock resistance

Specification

Material :  High-Purity Silicon Carbide (SiC)
Shape & Length & Width :   Square,  Length 70mm (±0.8mm), Width 70mm((±0.8mm),Thickness 20mm (±1.0mm)
Pore Density (PPI):  20 PPI
Operating Temperature    ≤ 1550 °C
Open Porosity:  80% - 90%
Applicable Metals:   Ductile Iron, Gray Iron, Malleable Iron, etc

Core Advantages

1. High Filtration Efficiency: The 20 PPI pore design is optimized for cast iron, effectively filtering inclusions ≥0.5mm and achieving an inclusion removal rate of over 90%, which improves the surface finish and internal density of castings. Its 3D open-pore structure provides both adsorption and mechanical barrier effects 
2.Exceptional High-Temperature Performance: The silicon carbide material ensures no phase transitions at 1550°C, offering superior resistance to thermal shock and preventing cracking or deformation during use 
3.Precise Dimensions and Strength: Utilizing a pre-cut and then coating process, where the foam carrier is first precisely cut to the required customer dimensions before the slurry coating and sintering. This fundamental process ensures excellent dimensional consistency for each filter, preventing installation mismatches or metal leakage. Dimensional tolerances are strictly controlled within ±0.8mm for diameter and ±1.0mm for thickness, ensuring a perfect fit in the gating system. The room temperature compressive strength is ≥1.0MPa, meeting the demands of automated foundry production lines 
4.Economic Benefits: Contributes to a significant reduction in casting rejection rates and improved yield, offering substantial cost savings for customers

Production Workflow Chart

Application & Usage Guidelines

• Suitable Processes: Sand casting, lost foam casting, vertical gating systems.
• Installation Location: Pouring cup, bottom of the sprue, or runner. Ensure the filter fits snugly within the gating channel.
• Usage Recommendations: Secure the filter properly in the mold. Avoid direct impact of the metal stream onto the filter (recommended drop height <320mm). The pouring temperature should not exceed 1550°C

After Sales Service

Policy Item	Specific Commitment
Quality Assurance	Products comply with relevant enterprise standards and technical agreements. A quality assurance period of 12 months is provided from the date of delivery
Return & Exchange Policy	Within the warranty period, if quality problems (such as cracking, insufficient strength, non-compliant effective pore size, etc.) are confirmed, we commit to providing free return or exchange services.
After-Sales Support	Product usage consultation services are available. As the product is a one-time consumable, maintenance/repair services are not provided.
Disclaimer	We are not liable for returns or exchanges resulting from improper customer use, storage, or installation (e.g., severe impact, installation mismatch leading to sand wash, etc.).

Company Profile

Quality Assurance & Customization

About Us
Shanxi Dingtai Yinrui Filter Manufacturing Co., Ltd. is a high-tech enterprise specializing in the R&D and production of foundry filters for over 20 years. We are committed to providing high-performance filtration solutions for our global clients

Quality Assurance & Customization

Other Products

• OEM/ODM capabilities
•Process Assurance: Advanced pre-cut and coating technology, combined with automated production control, ensures stable product dimensions and performance.
•Customization Capability: Supports non-standard sizes (Diameter 30-300mm), pore densities (10-30 PPI), and shapes (square, rectangular) to flexibly meet customer requirements

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FAQ

Q: What's the lead time for orders?
A: Standard models ship in 7-10 days; customized units require 15-20 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized  size?
A: Absolutely! 

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COO, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.