Xinxiang Filter

Description:

Threaded screw-in flame-retardant antistatic filter cartridges are fitted with external or internal threads on end caps, which can be directly screwed into the threaded ports of equipment filter chambers. This connection structure delivers reliable sealing and outstanding vibration resistance without loosening under vibration. It is widely used for new-version SLM 280 equipment, high-end customized machines and high-temperature working conditions.

This filter cartridge adopts nano flame-retardant filter paper as the substrate with a carbon powder conductive layer embedded on the surface. It reaches UL94 V-0 flame retardancy grade with surface resistance ≤10⁹Ω. Compliant with EN 1822 standard, it achieves H13-H14 filtration grades with filtration efficiency of ≥99.95%–99.995% for 0.3μm particles. An all-stainless steel structure is optional, suitable for corrosive gas environments and high-temperature scenarios.

Core Technical Advantages

Stable and reliable threaded connection: The threaded interface prevents loosening caused by vibration, making it especially suitable for working conditions with intense vibration and frequent pulse backblowing. Installation only requires screwing the cartridge fully into place for simple operation.

Nano flame-retardant filter paper substrate: The nano flame-retardant filter paper features low resistance and excellent ash cleaning performance. Its integrated flame retardant property will not degrade due to surface abrasion.

Carbon powder conductive layer embedded on surface: A carbon powder conductive layer is embedded on the filter media surface to form a static dissipation network, which promptly releases static electricity and reduces the activity of metal powder. The surface resistance is stably controlled within 10⁶–10⁹Ω. Compatible with inertization protection: When matched with the equipment inert powder spraying module, it can reduce metal powder activity in real time to protect operators and extend filter service life.

Application Fields

High-end Custom SLM/DMLS Equipment

High-Temperature / Corrosive Working Conditions:

EBM Electron Beam Melting Equipment

3D Printing in Corrosive Gas Environments

Materials with Strict Safety Requirements:

Nickel-based Alloys (Inconel Series)

High-demand Titanium Alloy Components

Reactive Metal Powders

Case & Data Verification

Case: Safety Application on New-Version SLM 280 Equipment in a High-End Manufacturing Enterprise

A high-end manufacturing enterprise adopts new-version SLM 280 equipment to print high-value parts made of nickel-based alloys and titanium alloys, equipped with threaded screw-in H13 flame-retardant antistatic filter cartridges. The filter achieves V-0 flame retardancy grade (0 second afterflame) with surface resistance of 6.3×10⁸Ω. No loosening caused by vibration occurs after installation. The filter remains intact after 2500 hours of operation, eliminating potential safety hazards.

FAQ

Q1: How does the threaded screw-in filter cartridge guarantee sealing performance?

A: It is normally sealed with an end-face O-ring. During installation, manually screw the cartridge until the threads engage, then tighten to the specified torque with a wrench to ensure proper compression of the O-ring.

Q2: Can this filter cartridge be used in oxygen-rich environments?

A: Materials compatible with oxygen (degreased and hydrocarbon-free) must be selected for oxygen service. Clearly state oxygen application requirements when placing orders.

Q3: Will threaded installation affect flame-retardant and antistatic performance?

A: No. Flame retardancy is inherent to the filter media itself. Antistatic performance is realized jointly by the filter conductive layer, metal end caps and equipment grounding system, and the threaded connection provides a favorable static conduction path.