Concept of Monel K500 Mesh Weaving

Generally, the woven wire mesh has been produced using different materials like synthetic items such as polyster, polyamide, pvdc, polythene and others. The metals used to manufacture the woven mesh are: Monel, aluminum, inconel, incoloy, Hastelloy and others.

The Monel Mesh square cloth is designed by following the dimension of aperture or intersection area of mesh and the diameter of wire. The count of mesh is the number of meshes present in each inch linearly. The absolute leveling is measured by the bubble test method that utilizes alcohol as liquid for testing. An absolute size of mesh intersection area identifies the largest ball shaped particle size that can go through the mesh. This technique with the real aperture size of filter cloth has been authenticated by MPA.
Till now the manufacturers couldn’t find the technique to estimate the least rating of a woven Monel K500 Mesh. Thus the information derived for the mesh should be used carefully. The common method used is the Multi Pass Test. In this method a fluid is mixed with different size particles and it is sent through the filter medium under the constant flow.

The least filter rating determines the size of particle of which a predetermined percentage was equipped by the medium particles. This test is the sole method to determine the count of intersection areas of a random fibre or other diffusion bonded filter medium that do not possess equal and limited apertures like woven wire mesh cloth.

ISO 4783-1 is the international standard for corporate wire screens and woven wire mesh
ISO 4783-1: Generalities
ISO 4783-2: Recommended blends for woven wire mesh
ISO 4783-3: Recommended blends for precrimped or pressure welded wire screens
Following, more details on the monel mesh are provided:

Monel Intersection W is the distance between the two consecutive wrap or weft wires in the projected surface.

Wire diameter d is the diameter of woven wire measured prior to weaving.

Spacing or pitch p is the distance of the central line of two consecutive wires of the total of mesh breath w and diameter d of the wire.

Warp: It determines the count of wires present parallel to the selvedges.

Weft: It determines the count of wires perpendicular to the warp wires.

Mesh count per unit length is the count of meshes present continuously in single row o unit length.

The intersection of mesh M can also be determined as follows:
– M = (25.4 / mesh count) – d

Open screen area A0: proportion of intersections of screen in the whole woven area as a percentage:
– A0 = 100   (w   /  ( w+d ))²

Woven weight W in kg per m²:
– W = (12.7 x d²) / p

However this calculation is valid only for the steel consisting of carbon. The conversion factors for Monel K500 Mesh is 112.5.

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