Xinxiang Filter

Description:

Three-lug chuck antistatic filter cartridges adopt a three-lug chuck (also known as triangular chuck) as the mounting interface, which can be locked or unlocked by rotating 90 degrees. This type of interface is widely applied to the gas circulation systems of small and medium-sized SLM printers, featuring convenient installation and reliable sealing.

Conductive carbon fiber layers are embedded in the filter media or carbon-impregnated surface treatment is adopted, keeping the surface resistance stably within the safe range of 10⁶–10⁹Ω. Complying with EN 1822 / ISO 16890 standards, the filtration efficiency reaches grades from F9 to H13, with interception efficiency of ≥85%–99.95% for 0.3–0.4μm particles. The filter cartridge features a three-layer composite structure: an outer stainless steel mesh for static dissipation, a middle PTFE membrane layer for precision filtration, and an inner high-strength support layer to guarantee structural rigidity.

Core Technical Advantages:

Quick-mount three-lug chuck design: Equipped with a standard three-lug chuck interface, the cartridge can be installed and removed by a 90° rotation without any tools, greatly shortening equipment downtime.

Multi-layer static dissipation structure: The outer layer of the filter cartridge is fitted with a stainless steel mesh or carbon fiber conductive layer, which timely guides static electricity accumulated on the filter surface to the grounding system. The surface resistance is stably maintained at 10⁶–10⁹Ω, meeting the requirements of GB 12158-2006 General Guidelines for Preventing Static Accidents.

PTFE Membrane Surface Filtration:

The PTFE membrane forms a dense filter layer with pore size less than 200nm, trapping dust on the membrane surface instead of deep inside fibers. It delivers high pulse backblow cleaning efficiency with a pressure drop recovery rate of ≥90%.

Three-layer composite with high dust holding capacity: The filter substrate has a carbon-impregnated outer surface, a middle PTFE membrane layer and an outer stainless steel mesh layer. The stainless steel mesh not only dissipates static electricity but also protects the filter substrate, boosting the cartridge strength and service life.

Application Fields:

Metal 3D Printing Equipment:

Recirculating gas filtration for SLM / DMLS printers

Atmosphere purification systems inside build chambers

Terminal high-efficiency filtration for gas recovery units

Applicable Materials (High Static Risk):

Aluminum Alloy (AlSi10Mg)

Titanium Alloy (Ti6Al4V)

Magnesium Alloy (Extremely flammable and explosive)

Stainless Steel (316L, 17-4PH)

Other Explosion-Proof Scenarios:

Exhaust filtration for powder recovery systems

Dust removal for powder cleaning stations and sifters

FAQ

Q1: What points need attention during three-lug chuck installation?
A: Make sure the sealing gasket is intact and aligned accurately, rotate 90° to the locked position and check for wobbling. A PAO leak test is recommended after installation to verify tightness.

Q2: What is the surface resistance range of antistatic filter cartridges?
A: In accordance with GB 12158-2006 standard, the surface resistance of antistatic filter media shall be controlled between 10⁶ and 10⁹Ω. Resistance below 10⁶Ω may cause conductive leakage, while resistance above 10⁹Ω carries high risk of static accumulation. Every single cartridge is tested before delivery.

Q3: What is the difference between three-lug chuck and quick-clamp interfaces?
A: The three-lug chuck adopts a three-jaw structure with a small locking rotation angle of about 90°, while quick-clamp types mostly feature a single handle or double hoop with different locking methods. They are not interchangeable; confirm the equipment interface type before ordering.

Q4: Can antistatic filter cartridges be used for titanium alloy printing?
A: Yes. Although titanium powder is less flammable than aluminum powder, static sparks may still ignite titanium powder, so antistatic filter cartridges are recommended.