OF WIRE MESH
MKI's extensive experience in the thermal processing of wire mesh extends
beyond the production of Dynapore® sintered wire mesh laminates. We
also offer contract annealing and sintering services to the wire mesh
industry. Customers can send us their wire mesh in full rolls or slit
coils for bright annealing or coil sintering. We generally do not anneal
cut pieces or stamped parts of wire cloth, but please inquire for specific
Wire Mesh Annealing:
The fundamental purpose of annealing wire cloth
is to soften it for improved fabricating. This is useful for subsequent
stamping, forming, pleating, winding, and other operations. Our standard
batch annealing process removes the cold work and spring tension caused
by drawing, weaving and coiling.
Annealing is available on all wire mesh weaves in the following materials:
- Stainless steels
- Plain steel
- Monel 400
- Inconel 600
- Yellow brass
- Commercial bronze
- Phosphor bronze
- Oxygen-free copper
- Other metals and alloys
Most materials are rendered clean, bright, and
soft in our specially designed annealing furnace.
Stainless Steel Annealing:
For AISI 300 Series stainless steels, maximum
corrosion resistance is obtained by rapid cooling to control carbide precipitation.
Our process is designed to produce a true metallurgical solution anneal
in most cases. Properly treated stainless steel wire cloth will be capable
of passing an accelerated corrosion test such as the Strauss Test (ASTM
A262, Practice "E"). MKI can help you meet your process requirements,
and can perform Strauss testing on annealed mesh.
In some instances a modified coil annealing process
may be used to achieve a limited degree of bonding between the wires in
certain weaves of mesh. This "super-annealing" or "coil
sintering" process may be useful for fabrication, or to achieve relative
freedom from wire migration in non-critical applications. However, this
should not be confused with true sintering, which is performed under isostatic
pressure in flat sheets, and which completely eliminates fraying of loose
wires. Please consult us for the applicability of this process to particular
weaves of mesh. Where practicable, coil sintering is a low-cost alternative
to the flat-sheet true sintering (diffusion-bonding) process.
Wire Mesh Annealing Requirments:
Here are a few tips to help you work with our annealing and coil sintering
- It is best to slit your mesh to size before annealing. Annealed mesh
is more difficult to slit properly. MKI can handle both slit "coils"
(up to 24" wide), and "rolls" (over 24" up to 48"
wide) of wire mesh.
- Most meshes will be cleansed of lubricant in our process, without
incurring any carburization from the oils. However, for best results,
heavier weaves or meshes which contain inordinate amounts of lubricant
should be degreased prior to annealing.
- Please send your mesh to MKI in "furnace ready condition"
- no cardboard cores, paper or tape. Finer meshes should be wound on
perforated stainless steel cores for best results.
MKI can conform to your process specification, including times, temperatures
and atmospheres, and certify accordingly. We can offer pure dry hydrogen,
argon and vacuum furnace heat treatments. Alternatively, we will anneal
or sinter your mesh in accordance with our own proprietary procedures.