FM‑07‑CU High‑Silica Fiberglass Mesh Filter for Molten Copper & Copper‑Alloy Casting
Many brass, bronze and copper‑component foundries struggle with cuprous‑oxide dross and suspended non‑metallic particles carried within molten copper. FM‑07‑CU leverages high‑silica fiberglass base material (SiO₂ ≥96%) paired with custom‑formulated refractory coating to target these copper‑specific contaminants. Optimized for 1000‑1200 °C pouring conditions, this mesh captures oxide dross inside the gating path before melt fills mold cavities. It delivers clean castings while offering an economical alternative to ceramic foam filters for most standard copper‑alloy production runs.
Core Advantages for Copper‑Alloy Foundries
- Tailored for Copper Melt Environment: Formulated to withstand typical brass & bronze pouring temperatures from 1000‑1200 °C for single‑pour casting cycles.
- Resists Cuprous‑Oxide Dross Build‑up: Special surface treatment helps trap copper‑rich oxide slag, sand debris and refractory fragments, lowering slag‑related scrap for copper castings.
- Preserves Electrical & Thermal Properties: Chemically stable against copper‑base melts, avoids foreign element contamination critical for electrical‑grade copper parts.
- High Adaptability for Copper Gating Layouts: Can be die‑cut into sheets, discs, strips or pre‑formed hat‑shape filters, widely compatible with sand casting and investment‑casting pouring‑cup setups.
- Good Thermal‑Shock Performance: Reinforced leno weave construction minimizes mesh distortion under real‑world copper pouring shocks.
Important Practical Note: The ~1700 °C softening point of high‑silica fiber describes raw‑material property and cannot be treated as continuous‑service temperature. In actual copper casting conditions, safe effective melt contact time is limited to around 10 minutes. Extended submersion will embrittle fiber structure and raise contamination risk. This filter is designed for single‑pour short‑cycle operations.
High-Temperature Fiberglass Mesh Filter - Improve Casting Quality
Technical Data Sheet: Molten Copper Filtration Fiberglass Mesh Filter
| Item | Specifications |
|---|---|
| Product Code | FM‑07‑CU |
| Material | High‑silica fiberglass cloth (SiO₂ ≥96%) with copper‑grade refractory coating |
| Working Pouring Temp | 1000‑1200 °C |
| Softening Point | ~1700 °C (Material property, not continuous‑service temperature) |
| Effective Contact Time | Approx. 10 minutes under 1000‑1200 °C pouring |
| Standard Sheet Size | 300 × 300 mm, 400 × 400 mm |
| Custom Options | Cut‑to‑size discs, strips, hat‑type / cap‑shaped pre‑formed filters available |
| Mesh Aperture | 1.5 × 1.5 mm / 2.0 × 2.0 mm / 2.5 × 2.5 mm |
Compatible Alloys & Suitable Casting Processes
Works well for brass, tin‑bronze, aluminum‑bronze and general‑purpose copper‑alloy castings
Matches sand casting and investment (lost‑wax) casting workflows for copper components
For high‑purity high‑conductivity copper parts, please consult our engineering team for feasibility evaluation.
This high‑silica copper‑grade mesh is not interchangeable with filters for aluminum, iron or steel melts.
For aluminum casting: FM‑07‑AL series
For molten‑iron casting: FM‑07‑FE
For molten‑steel casting: FM‑07‑ST
Typical Real‑World Application Segments
FM‑07‑CU serves foundries producing electrical copper hardware, bronze valve assemblies, art‑craft bronze castings, bronze pump sleeves and general‑engineering copper fittings. It is widely adopted for investment‑cast copper art‑pieces where surface blemishes from oxide inclusions must be kept to a minimum.
Our copper‑casting fiberglass filters are supplied to 50+ countries across Europe, Asia, Middle East and Americas for copper‑alloy foundry production.
Installation & Pouring Best‑Practice Guidance
Improper installation remains the leading source of filtration failure for copper castings. Copper melt generates abundant floating oxide dross, so filter placement and sealing demand extra attention:
- Pre‑heat filter together with gating system before copper melt arrival, to prevent thermal‑shock cracking.
- Lay filter fully flat on a clean runner or pouring‑cup base; seal all peripheral gaps thoroughly. Even narrow gaps allow copper oxide dross to bypass filtering.
- Mesh aperture suggestion for copper casting: select 1.5‑2.5 mm. Too‑fine mesh brings excessive flow resistance and risks incomplete mold filling.
- Size filter area to reach 3‑4× choke cross‑section; strictly avoid long‑duration copper‑melt contact.
- Store filter stock inside sealed dry packaging; moisture exposure will reduce thermal‑shock resistance.
- For ultra‑high‑spec critical copper castings, evaluate ceramic‑foam filters as an alternative higher‑performance option.
Share key project details including pouring temperature, copper‑alloy grade, runner / sprue dimension and preferred mesh opening. We support custom cutting, pre‑formed hat‑shape filters and bulk‑volume supply for copper foundry customers.
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Whether you're looking to improve casting quality, increase yield, or simply streamline your supply chain, our team is ready to help. Contact us today for a quote or technical consultation.
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