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Help CenterHigh Temperature Stainless Steel Filter Bag 400℃ 20 Micron for Foundry Applications
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Welcome to Anping County Boli Hardware Wiremesh Products Factory – your trusted manufacturer of high-performance filtration solutions since 1998. Our High Temperature Stainless Steel Filter Bag 400℃ 20 Micron for Foundry Applications is engineered to withstand extreme thermal and mechanical stress in molten metal filtration, ensuring cleaner castings and reduced defects. With over two decades of expertise and an annual export value exceeding US$5 million, we deliver precision-crafted filter bags that meet the rigorous demands of foundries worldwide.
Key Features & Technical Specifications
- Exceptional Heat Resistance: Rated for continuous operation at 400℃ (752°F), our filter bags are made from premium stainless steel (304 or 316L) that maintains structural integrity even under molten metal contact.
- Precise Filtration at 20 Micron: The woven wire mesh ensures consistent 20-micron filtration, capturing fine inclusions, slag, and dross to improve casting quality and reduce rejects.
- Reusable & Cost-Effective: Unlike disposable ceramic filters, these stainless steel bags can be cleaned and reused multiple times, providing long-term savings for foundries.
- Customizable Design: Available in flat bag or cylindrical shapes, with various connection options (flange, ring, snap band) to fit your specific filter housing or casting system.
- High Mechanical Strength: The robust stainless steel weave resists tearing and deformation under high flow rates and pressure drops, ensuring reliable performance.
| Parameter | Specification |
|---|---|
| Material | Stainless Steel 304 / 316L |
| Maximum Operating Temperature | 400℃ (752°F) |
| Filtration Rating | 20 Micron (absolute) |
| Wire Diameter | 0.08 – 0.20 mm (customizable) |
| Mesh Count | Approx. 800–1000 mesh per inch |
| Shape Options | Flat bag, cylindrical, custom shapes |
| Connection Type | Flange, ring, snap band (optional) |
Detailed Product Advantages
Our filter bags are specifically designed for foundry applications such as:
- Molten iron, steel, aluminum, and copper alloy filtration
- In-line filtration in casting ladles, tundishes, and pouring boxes
- Removal of non-metallic inclusions, slag, and refractory debris
The 20-micron rating strikes the perfect balance between flow rate and filtration efficiency. It effectively traps fine particles without causing excessive backpressure, ensuring smooth pouring and consistent metal flow. The stainless steel construction resists chemical attack from molten metals and fluxes, while the high-tensile wire mesh prevents bag rupture under sudden pressure surges.
Compared to traditional ceramic foam filters, our stainless steel filter bags offer superior durability – they can be reused dozens of times after simple cleaning (e.g., acid washing or ultrasonic cleaning). This reduces filter replacement costs and waste, making them an environmentally friendly choice for foundries.
Frequently Asked Questions (FAQ)
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Q: Can this filter bag be used for aluminum casting at 700°C?
A: Our filter bag is rated for 400°C continuous operation. For aluminum casting (typically 660–750°C), we recommend using a higher-temperature variant (e.g., 600°C grade) available upon request. Please contact us for custom solutions. -
Q: How do I clean and reuse the filter bag?
A: After use, allow the bag to cool, then remove trapped slag mechanically or by washing with a mild acid solution (e.g., 5% hydrochloric acid). Rinse thoroughly with water and dry. The bag can be reused multiple times, depending on the level of contamination. -
Q: What is the typical lifespan of one bag?
A: Lifespan varies by application. In normal foundry conditions, a bag can be reused 10–20 times before the mesh degrades. Proper cleaning and handling extend its life. -
Q: Do you offer custom sizes or shapes?
A: Yes, we can customize the diameter, length, and shape (flat, cylindrical, tapered) to fit your equipment. Please provide your drawing or dimensions for a quote. -
Q: Is this filter bag suitable for continuous casting?
A: Yes, it is widely used in continuous casting systems for tundish filtration. The high-temperature resistance and robust construction ensure reliable performance. -
Q: What is the mesh count for 20 micron filtration?
A: 20 micron corresponds to approximately 800–1000 mesh per inch, depending on wire diameter. We use precision weaving to ensure consistent pore size. -
Q: Can you provide a sample before bulk order?
A: Yes, sample orders are welcome. We can produce a small batch for testing. Sample cost is negotiable, and shipping is at your expense. -
Q: What are the available connection types?
A: Standard options include flange ring, snap band, or plain edge. We can also design a custom connection per your request.
Why Choose Boli?
As a factory established in 1998, Anping County Boli Hardware Wiremesh Products Factory has been a reliable partner for clients across North America, South America, Europe, Southeast Asia, and beyond. Our annual export value of US$5–10 million reflects the trust global customers place in our products. We ship from major ports including Tianjin, Qingdao, Shanghai, and Foshan, ensuring timely delivery.
Our team uses advanced weaving technology and strict quality control to produce filter bags that meet your exact specifications. We invite you to contact us today for a quote or to discuss your unique filtration requirements. Experience the Boli difference – quality, reliability, and service since 1998.
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