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absolute micron retention( See Micronic Filter Cloth ) |
In both types of dutch weave the sum derived from multiplying the number of weft wires
in a given measurement by their diameter, results, in theory, in a specification with no
open space. Because the wires are driven together during the weaving process, the aperture
size cannot be calculated in the normal manner. |
There are two methods by which the aperture size can be determined: bubble point
testing and glass bead testing. See-"bubble point test"
See-"glass bead test" |
ACS
(See
American Chemical Society) |
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AICHE
( See American Institute of Chemical Engineers
) |
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AIME (See
American Institute of Mining, Metallurgical
and Petroleum Engineers ) |
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angle insert |
Steel (or Stainless Steel) angular shape welded or otherwise fastened to a screens
formed tensioning hook for reinforcing purposes. |
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anneal |
A heat-treating process in which the steel is heated to some elevated temperature,
usually at or near the critical range and held at this temperature for a period of time,
then cooled, usually at a slow rate. |
Annealing is employed (1) to soften steel for secondary machining or forming processes;
(2) to alter ductility, toughness, electrical or magnetic characteristics or other
physical properties; (3) to refine the crystal structure; (4) to produce grain
reorientation; or (5) to relieve stresses and hardness resulting from weaving (cold
working). |
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annealed after |
Wire cloth or wire mesh
which is annealed after the
weaving process. |
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annealed before |
See-"annealed wire". |
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annealed wire |
Wire which has been cold-drawn to reduce its diameter is often annealed to reduce
strength and increase elongation to facilitate weaving. |
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ANSI
(See
American National Standards Institute ) |
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aperture
(
See Aperture Formulas ) |
The clear opening between wires on a wire mesh screening surface. |
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API
(See American Petroleum Institute ) |
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ARI
(See
Air-Conditioning and
Refrigeration Institute ) |