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Wedge Wire is made from round wire which is first looped at regulary pitched intervals and then pressed into a deep wedge shaped section (Fig.1 and 2). Then loops themselves are pressed so as to produce at each side accurately sized spacing shoulders which butt togheter when the wires are assembled. The width of the slot apertures in the finished panel is determined by the difference bettwen the top face of the wedge profile and the width over spacing shoulders (Fig. 2).
The individual Wedge Wires are built into panels by feeding cross rods of suitable diameter through the loops of the wires.The whole is then clamped togheter and made secure - usually by riveting over the
 | cross rod ends (Fig.3). The finished sieve is therebefore , a grille made up of cross rods suporting profiledwires with loops.
Curved Screens and Cylinders
In addition to flat panels, Wedge Wire can be readily made up into full cylinders and segments of cylinders. In most cases the cross rods lie along the circumference and the profile wires lie parallel to the axis. Sometimes this arrangement is reversed.The screening face may lie on the inside or on the outside of the cylinder depending on the particular application. Curved Wedge Wire Sieve Bends are used to a considerable extent in chemical  | plantes, are and coal mines, abattoirs, vegetable processing plants, cane and beet sugar refineries,paper pulp factories, and almost any process industry where dewatering of sluries and separation of solids from liquids is required.
For enhaced de-watering and separation, we have developed our deep-arch configuration (Fig 4). Pleas ask for details of this special and efective version of wedge wire.
Special surfaces are available - (Fig 5 and 6).  |
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Wedge Wire Profiles
The Profile or shape of the pressed cross section decides most of the properties of the Wedge Wire Screen. | Easy Clearing
The narrowest part of the aperture comes at the top and steady opening out from the point promotes easy clearing.
Lateral Strength
Increase rapidly with the width of the
profile and sufficient is needed to avoid the likelihood of the Wedge Wire being bent sideways and the accuracy of the slot being therby lost.
Load Carrying Capacity or Vertical Strength
Increase rapidly with the depth of the profile and is needed to a greater degree than is lateral strength.
Percentage Open Area
For any given aperture size this depends on the number of apertures per foot width of screen. The wider the profile the fewer | the apertures, and the less is open area - likewise the smaller the number of pressed Wedge Wires per foot, the greater the open area.
Wearing Life
With abrasive materials the top surface of the profile becomes worn away and inevitably the aperture must increase. With a small angle of opening the increase is gradual, but with a large angle it is rapid. The apertures quickly reach the oversize limit and the working life is reduced.
Materials
We ussualy work in stainless steels to AISI Grades 430, 304 and 316. Also mild steel and other metals are available.Please call for more information. |
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