Wedge Wire and Sintered Mesh – Tailored Solutions for Distinct Requirements

Brass border filter disc, also known as metal mesh, oil filter disc, disc filter, or chemical fiber assembly, has an average filtration accuracy of 5–80 μm. Typically, the edging material of the filter disc is brass, while the mesh part is made of stainless steel. This type of filter disc is made by combining metal mesh of different mesh sizes with a support mesh and then processed with an edging process.

Table 1: Wedge Wire vs Sintered Mesh

Item		Wedge wire	Sintered mesh
Manufacturing process		V-shaped stainless steel rods are precisely laser welded, with slot width controllable to ±3 μm	Multiple layers of metal mesh are stacked and sintered by high-temperature diffusion, achieving a porosity of 50% – 60%
Filtration characteristics		Absolute precision surface filtration; particles larger than the slot size are intercepted	Probabilistic precision depth filtration; particles are trapped within3D pore channels through absorption
Pore structure		Trapezoidal straight-through slots, wider inlet and narrow outlet design prevents clogging	Irregular labyrinthine pore channels, large specific surface area, and a tendency to retain impurities
Filter rating		Rated as 30 μm = minimum slot width (at the inlet)	Rated as 10 μm = maximum pore size, with oversize pores > 10 μm
		Actual retention capability: 100% retention of particles ≥ 25 μm, due to outlet slot narrowing to 15–20 μm	Actual retention capability: 99% retention of 5–8 μm particles, relying on thickness and adsorption compensation
High-pressure pulse impact, test standard ISO 16889	0–10 MPa pulse, 100,000 cycles	Slot deformation ≤ 1%	Interlayer delamination and cracking
	Particle load 5 g/L	Pressure drop increases gradually, ∆P < 0.1 MPa	Pressure drop spikes, ∆P > 0.5 MPa
Chemical corrosion, 70 °C, immersion for 240 h	20% H2SO4	316 L, weight loss 0.1%, weld seam intact	316 L, weight loss 2.3%, intergranular corrosion perforation
	5% NaCI + CI2	316 L, pitting depth < 10 μm	316 L, pitting depth > 50 μm
Pressure		> 3 MPa	≤ 3 MPa
Filtration medium		Contains hard particles, high viscosity	Contains colloids, microorganisms
Service life		> 5 years	< 3 years

Sintered mesh length measurement

Wedge wire length measurement

Sintered mesh width measurement