Xinxiang Filter

Description:
Threaded screw-in 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 excellent vibration resistance. It is widely applied to new-generation SLM 280 equipment and some high-end customized machines, and will not loosen under vibration after installation.

The filter media undergoes flame-retardant and antistatic composite treatment with carbon powder conductive layer embedded on the surface. It can timely dissipate static electricity generated by accumulated metal particles on the filter surface, reduce metal powder activity and improve operational safety. Complying with EN 1822 standard, it achieves H13-H14 filtration grades with filtration efficiency of ≥99.95%–99.995% for 0.3μm particles.

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.

Carbon powder conductive layer embedded on surface: A carbon powder conductive layer is embedded on the filter media surface to timely release static electricity and lower the activity of metal powder. The surface resistance is stably controlled within the safe range of 10⁶–10⁹Ω.

Nano flame-retardant filter paper substrate: Adopting nano flame-retardant filter paper, the filter cartridge features low airflow resistance and easy ash cleaning. Matched with PTFE membrane lamination, it delivers high filtration precision and anti-dust adhesion performance.

Application Fields:

SLM/DMLS Equipment

High-Temperature / Corrosive Working Conditions:

EBM Electron Beam Melting Equipment

Corrosive Gas Environments

High-Standard Printing Materials:

Nickel-based Alloys (Inconel Series)

High-demand Titanium Alloy Components

Reactive Metal Powders

Case & Data Verification:

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

A high-end manufacturing enterprise adopts threaded screw-in antistatic filter cartridges on its new-version SLM 280 equipment to print high-value parts made of nickel-based alloys and titanium alloys. No loosening caused by vibration occurs after filter installation, with measured surface resistance of 8.2×10⁸Ω. Cooperated with the equipment pulse backblowing system, the filter remains intact after 2500 hours of operation with stable printed part quality.

FAQ

Q1: How does the threaded screw-in filter cartridge guarantee sealing performance?
A: Sealing is normally realized via end-face O-rings or thread sealant. 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: Is thread sealant required during installation?
A: Unnecessary for versions equipped with O-rings; conical thread designs without O-rings may require sealant. Follow the specifications in the equipment manual to avoid contamination of the filtration system by sealant. If sealant is mandatory, select inert thread sealant.

Q3: 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.