A downloadable, detailed sintered wire mesh overview
can be found here.
An overview of woven wire
Woven wire mesh comes in a wide variety of specifications
providing a range of mechanical properties. Coarser weaves woven from
heavier gauge wires may provide useful mechanical strength, while finer
weaves are useful as filtration and separation media due to their small
and tightly controlled apertures. A basic review of wire mesh may be found
Wire mesh has been used in a very wide variety of applications. However,
in the as-woven condition, mesh has a tendency to fray at the edges. In
small punched discs, for example, this may result in downstream migration
of wire fragments. Wires may also shift within the weave, thus changing
its geometry by opening up oversized apertures. In the case of filtration
meshes, this means the filter rating is compromised by changes in pore
AS WOVEN MESH
Diffusion-Bonding (Sintering) is the solution
One answer to these and other concerns is to
sinter or diffusion-bond the wire cloth. In a true sintering process,
heat and pressure are used to create molecular diffusion-welds at each
and every "intersection" in the mesh where the wires cross over and under
one-another. The wire mesh is also rendered clean, ductile and fully annealed
by the sintering process. Its mechanical properties are generally enhanced
by the wire bonds, and its filtration properties are secured by the prevention
of shifting wires.
True sintering of wire mesh is usually accomplished in flat sheets, to
which uniform isostatic pressure may be applied to assist the diffusion-bonding
process. However, other processes have also been developed for sintering
wire mesh in coils or rolls. We refer to these processes as "coil
sintering" or "roll sintering" of wire mesh.
20 x 20 plain weave (as-woven)
20 x 20 plain weave sintered
(diffusion-bonded) wire mesh cross-section
How is sintered wire mesh available?
Sintered wire mesh is available in flat, rectangular
sheets in standard sizes of 18x24" and 24x48". Other sizes are
available on special order. The range of specifications mirrors the spectrum
of woven meshes available. Meshes ranging from 4x4x.063 (four wires per
inch in each direction, .063" wire diameter) to 325x2300 (a twilled
Dutch filter weave with apertures of less than 10 microns) may be sintered
to provide enhanced properties.
In addition, sintered wire meshes may be "calendered" to provide reduced
thickness and smoother surfaces. Calendering involves passing the sheet
of mesh through a pair of heavy precision-ground chromium steel rolls.
This process step is also used to create MPP
Micro-Perforated Plate media from sintered wire mesh.
New class of materials with sintered wire mesh laminates
While single-layer wire mesh may be sintered
to provide welds wherever the wires cross, a whole new class of structures
may be created by laminating multiple layers of wire mesh together. Please
visit our overview of Sintered
Wire mesh Laminates.