Xinxiang Filter

Core Definition

Threaded screw-in high-temperature filter cartridges are fitted with external or internal threads on end caps, which can be directly screwed into the threaded port of the equipment filter chamber. This connection structure delivers reliable sealing and excellent vibration resistance; it will not loosen due to vibration under high temperatures. It is widely applied to the new version SLM 280 equipment, ultra-high-temperature working conditions of high-end customized machines, and EBM electron beam equipment.

This product adopts ultra-high-temperature resistant ceramic fiber filter media or sintered metal filter materials with an all-stainless steel / Inconel construction, supporting operating temperatures ranging from 300℃ to 600℃. It reaches H13-H14 filtration grades in accordance with EN 1822 standard. The threaded screw-in design effectively prevents connection loosening caused by thermal expansion at high temperatures.

Core Technical Advantages

Stable threaded connection at high temperatures: The threaded port structure prevents loosening resulting from high-temperature thermal expansion and vibration. Matched with high-temperature anti-seize compound, it can be smoothly disassembled even after multiple thermal cycles.

Ultra-high-temperature resistant filter media system: Ceramic fiber media (up to 600℃) or sintered metal filter materials (over 600℃) are adopted to maintain intact structure and stable filtration performance under extreme high temperatures.

High-temperature resistant sealing system: The threaded joint can realize self-sealing via taper threads, or cooperate with high-temperature resistant metal sealing gaskets / graphite sealing rings, free from rubber aging issues.

Overall chemical stability: Composed of inorganic materials, it resists corrosive gas environments without aging or substance precipitation, suitable for special processes such as EBM.

Application Fields

Ultra-High-Temperature SLM Equipment

EBM Electron Beam Equipment

Ultra-High-Temperature Printing Materials:

High-melting-point metals including tungsten, molybdenum and tantalum (melting point >3000℃)

Ceramic Materials

Refractory Metal Alloys

FAQ

Q1: How to avoid thread seizure of threaded screw-in high-temperature filter cartridges under high temperatures?

A: Apply high-temperature anti-seize compound (e.g. nickel-based anti-seize lubricant) on threads during installation; adopt thread pairs of identical material or different hardness; avoid over-tightening at high temperatures; conduct regular inspection and maintenance at intervals.

Q2: How to choose between Inconel and 316L stainless steel?

A: 316L stainless steel works under 600℃ and fits most high-temperature working conditions; Inconel nickel-based alloy withstands temperatures up to 800℃ with superior high-temperature oxidation resistance, applicable to ultra-high-temperature or corrosive environments.

Q3: How to select between ceramic fiber filter media and sintered metal filter media?

A: Ceramic fiber features light weight and moderate cost with temperature resistance up to 600℃, suitable for periodic high-temperature working conditions; sintered metal boasts high strength, regenerability and long service life, ideal for continuous high-temperature operation.

Q4: What leak detection methods apply to threaded screw-in high-temperature filter cartridges?

A: Helium mass spectrometer leak detection or pressure drop testing are available. For high-temperature service, it is recommended to complete leak testing at room temperature, then heat up to operating temperature for re-verification to guarantee hot-state sealing performance.