Boedon
  • resources

  • we have a continuous programe of development exploring new weave types, methods and materials to ensure that

    the highest manufacturing standards and product performance are achieved for our customers.

    The Boegger is a service orientated business and for this reason extensive stocks of finished specifications are held in

    wide variety of metals to ensure a rapid and reliable ex stock delivery service for both domestic and international cu

    -stomers. Full support to fabricate and install our woven wire mesh.

    All our wire mesh is manufactured in accordance with International Standards. Boegger is an accredited ISO 9001:2008

    organisation and is committed to the provision of quality products.


    What are the types of Weaves?









    The Plain Weave is the most commonly used and simplest wire cloth weave. Each warp wire (wire running-parallel to length of cloth) passes alternately over and under the wires running traversely through the cloth (fill or shoot wires) at 90 degree angles. It has an extremely wide range of applications.   


    The Dutch Weave is produced by the use of coarse mesh (mesh wire, woven wire mesh, wire mesh basket) in the warp and a fine mesh with relatively smaller wire in the fill. This weave results in greater strength with very fine openings and is primarily used as a filter cloth. The shape and position of the openings aid particle retention and increase filter cake formation.   

     

    The Twilled Weave is produced by passing each fill wire alternately over and under two warp wires. The pattern is staggered on successive warp wires, giving the appearance of parallel diagonal lines. This weave allows the use of proportionately heavier wires in a particular mesh count (number of openings per lineal inch) than is possible in plain weave. This cloth has a wide application capable of supporting greater loads and finer filtrations.   

     

    The Twilled Dutch Weave is produced by a combination of the features of the Dutch Weave and the Twilled Weave. Fill wires are passed alternately over and under two warp wires forming a fine mesh in one direction and a coarse mesh (mesh wire, woven wire mesh, wire mesh basket) in the other. This type of weave is capable of supporting greater loads than the Dutch Weave, with finer openings than the Twilled Weave. It is used in applications where the filtering of heavy material is necessary.

     

    How to Measure Wire Cloth?

    A:     Space Cloth identifies the open area between the parallel wires.

    B:     Mesh Count identified as the number of openings per linear inch.        

    Mesh count can be shown as either a whole number, fraction, or as two numbers unless the material is a specialty cloth called space cloth - each item is described below:

           Whole Number or Fraction

    Mesh Count is identified as the distance from center to center of the parallel wires horizontally and vertically.

           Space Cloth

    This material is measured by the actual open space between parallel wires, known as clear opening, space size, or open area.

           Two Numbers (Example: 2 x 2 )

    Mesh Count is identified by the number of actual openings per linear inch horizontally and vertically.

    Mesh Calculation:

    Mesh = 1 / (wire diameter + opening)

    Open area = (opening x mesh)² x 100

     

    -Or-

    = (1 - (wire diameter x mesh)² x 100mesh

    -Or-

    = (1 - (wire diameter x mesh))² x 100

    Opening = (1 / # wires per inch) - (wire diameter)  Common Calculations:

    Mm to inches: mm x 0.03937 = inches

    Square feet: Length (feet) x Width (inches)12

     

    Coarse Mesh

     

    To measure wire cloth (woven wire cloth, stainless steel wire cloth, wire cloth screen, wire cloth strainer, industrial wire cloth, metal cloth, wire cloth) properly, the mesh count should be taken in both directions. On coarse meshes (mesh wire, woven wire mesh, wire mesh basket), this can be accomplished by counting the number of openings per linear inch measuring from wire center to wire center. After taking the first count, a second count should be taken at a 90 degree angle to the original measurement. The mesh count of the cloth shown is 10x10.

     

    Fine Mesh

     

    A mesh counter is used to measure finer meshes of wire cloth (woven wire cloth, stainless steel wire cloth, wire cloth screen, wire cloth strainer, industrial wire cloth, metal cloth, wire cloth) accurately. The fine mesh count is taken the same way the coarse mesh is computed by counting the number of openings per linear inch in one direction and taking another count at right angles to the original measurement.

    Wire Diameter

    Wire diameter is always checked with a micrometer. Diameters of wires in both directions should be checked.

     

    What does the wire cloth Use?

     

    Although there are many uses for wire cloth, it is rarely seen.  Industrial wire cloth is considered a component for equipment that has a need for filtering, separating, straining, sizing, diffusing, providing structure, etc.

           Electromagnetic Field (EMF) Shielding

           Low NOx Applications

           Heat Conductor – Roof / Gutters

           Medical (ie. Stints)

           Straining

           Diffusion – Liquid, Gas

           Sizing of crush material

           Explosive testing      •       EMI/RFI Shielding

           Fuel Cells

           Filtration – Liquid / Gas

           Gas Burners

           Safety and Protection

           Baskets for dipping

           Structure

           Blast Containment

     

    Our Loom Features

    Auto control warp wire feeding, high efficiency. Average

    speed: 80-100 spins/minute.

     

    What is our standard of checking finished products?

    We check quality of end products according to China National Standard GB/T17492-1998, equivalent ISO9044:1990, and our own standard. Send your inquiry to get a solution.

                            

    What is our standard of wire checking?

    We check the wire according to the national standard (GB5330-85) and our enterprise regulation about raw material defects and relative solution.

     

    What is our standard of checking finished products?

    We check quality of end products according to China National Standard GB/T17492-1998, equivalent ISO9044:1990, and our own standard.

     

    What is the major checking items of woven wire mesh?

    First, we check the basic data: wire diameter, mesh counts, roll width and roll length.

    Secondly, the surface condition: opening, color, flat or not and defects.

    Thirdly, the edge of wire mesh should be neat and without defects.

     

    What is our checking standard of reed?

    The steel reed should be flat and clean, with correct wire going, the inside height, inside length and thickness should be correct.

     

    What is the general packing requirement?

    Stainless steel woven wire mesh is rolled around paper tube first, moisture-proof paper outside or plastic fabrics. Customized packing available.

     

    What are the common wire mesh defects? 

    1. Folding Marks: The stripe marks on wire mesh surface that cannot be erased.

    2. Broken Holes: Multi-pieces broken wires at same site to form a hole in the surface.

    3. Rusty Spots: Colored changed by corrosion. Color spots in the surface.

    4. Broken Wire: Broken of single wire.

    5. Wire Back: The wire coiled, tied or twisted into the mesh forms a protruding above surface. Weft

    wire tied up called dead coiling. These will mostly cause the opening exceeding maximum opening range, or the wire mesh surface protruding.

    6. Knot Bulging: Warp wire not well knotted causes bulging out of the surface.

    7. Weft Twisting: Weft wire twists.

    8. Wire Doubling: Two pieces of wire or more get into one. Where there should be only one weft or

    inserted two or more wires.

    9. Mistaken Weaving: Some weft wire or warp wire are woven together in error. Easily happen for

     diamond wire mesh. 

    10. Loosening of Wire: Twisting or moving of single or some pieces of warp wire or weft wire.

    11. Weaving In of Impurity: Non-woven materials woven in the fabric cause deformed opening

     or blocking to affect the neatness of surface. The soft stuff that cannot be moved, also not

    protruding, may remain as defects; the hard and protruding stuff must be picked out, otherwise

    it may damage the neighboring wire mesh.

    12. Flattened Wire: Weft or warp wire deformed by mechanical operation may cause deformed opening

    when woven into wire mesh.

    13. Density Error: Aperture density exceeding density scope causes unqualified mathematics average value of aperture.

    14. Weft Wire Backward: Weft wire backward may cause irregular aperture or even worse, to make the opening exceeding deviation allowance.

    15. Irregular Aperture: Regular big or small openings between weft wires. One big opening is followed with one small opening for Plain Woven wire mesh. For Twill Woven, usually two big opening then two small, or one big then three small, etc.

    16. Bulging Out: One site or some sites along warp direction bulges out, while the aperture does not change much. This kind of defect influences the surface quality of wire mesh.

    17. Cloud Shape Weaving: Cloud shape bulging formed in the surface of wire mesh. Caused by weft wire pressed in a different direction. Usually occurs during weaving of medium sized wire mesh.

    18. Roll loosening: The wire mesh has no intensive feeling, can be twisted along warp or weft wire at an angle of 45?

    19. Other defects: Including dirty surface, mechanical folding, rusty spots, extra roll width difference, insufficient roll length, breaking of wire mesh, etc.