Core Definition
Flanged high-temperature filter cartridges are equipped with flanges on end caps, which are compressed against the flange surface of the equipment filter chamber via bolts or clamps. A high-temperature resistant sealing gasket arranged in the middle forms an airtight connection. This connection design features extremely reliable sealing performance, suitable for large-size, high wind pressure and high-vacuum high-temperature filtration systems. It is widely adopted for high-temperature printing conditions of mid-generation SLM 280, EOS M400 and other equipment.
This product adopts high-temperature resistant glass fiber or ceramic fiber filter media with an all-stainless steel structure, supporting operating temperatures ranging from 200℃ to 350℃. It complies with H13-H14 filtration grades specified in EN 1822 / ISO 16890 standards. The flange sealing can adopt high-temperature graphite gaskets or metal sealing rings to meet various high-temperature working condition requirements.
Core Technical Advantages
Reliable sealing via flange connection: The flange surface compresses the sealing gasket by bolts to form surface sealing with large sealing area and uniform compression force. It maintains excellent tightness under high temperatures and fits systems with high vacuum or large differential pressure.
All-stainless steel high-temperature resistant construction: Filter cartridge frames, end caps, flanges and outer protective meshes are all made of 304 or 316L stainless steel, tolerating temperatures above 400℃ without deformation or oxidation at high heat.
Multi-layer high-temperature filter media: Ceramic fiber media (up to 350℃) or glass fiber media (up to 260℃) are available, paired with PTFE membrane (temperature resistance up to 260℃) to boost filtration efficiency. The temperature resistance of filter media matches that of stainless steel frames without thermal stress mismatch.
High-temperature resistant sealing system: Flange sealing uses flexible graphite gaskets (up to 500℃) or metal O-rings (up to 600℃); end caps are bonded with high-temperature inorganic adhesive to guarantee air tightness under high-temperature conditions.
Optional liquid tank sealing type: A high-temperature liquid tank sealing structure is optional for high-temperature scenarios requiring ultra-high cleanliness with superior sealing performance.
Application Fields
Large-scale High-Temperature Metal 3D Printing Equipment
Ultra-High-Temperature Printing Materials:
High-temperature printing of titanium alloys and nickel-based alloys
High-melting-point metals such as tungsten and molybdenum
Ceramic Materials
High-Temperature & High-Vacuum Systems:
Vacuum High-Temperature Printing Equipment
Inert Gas Circulation High-Temperature Systems
Case & Data Verification
Case: Application of Flanged High-Temperature Filter Cartridges on EOS M400 Equipment in an Aerospace Manufacturer
An aerospace manufacturer adopted EOS M400 equipment for high-temperature printing of titanium alloy parts at 200℃. All-stainless steel flanged high-temperature filter cartridges with ceramic fiber media of H13 grade and graphite flange gaskets were deployed. The cartridges passed PAO leak testing and remained intact after 2500 hours of continuous operation. The printed parts obtained aerospace certification with no high-temperature leakage issues.
FAQ
Q1: How to choose between graphite gaskets and metal sealing rings for flanged high-temperature filter cartridges?
A: Graphite gaskets withstand up to 500℃ with moderate cost, suitable for most high-temperature working conditions; metal O-rings resist temperatures above 600℃ with better sealing performance, ideal for ultra-high-temperature, high-vacuum or corrosive gas environments.
Q2: Will the tightening torque of flange bolts change under high temperatures?
A: Bolts and flanges will experience thermal expansion at high temperatures. It is recommended to tighten bolts to specified torque at room temperature and re-tighten properly after temperature rise. Applying high-temperature anti-seize compound can prevent thread seizure under high heat.
Q3: How to select between ceramic fiber filter media and glass fiber filter media?
A: Ceramic fiber tolerates 260–600℃ with outstanding thermal shock resistance and corrosion resistance, suitable for ultra-high-temperature equipment such as EBM machines; glass fiber works at 200–260℃ with high cost performance for 150–200℃ working scenarios.
Q4: Are flanged high-temperature filter cartridges applicable in oxygen-rich environments?
A: Yes, by adopting oxygen-compatible materials (degreased and hydrocarbon-free). Clearly state oxygen service and high-temperature requirements when placing orders.
