ISO 9044:2016 pdf free download.Industrial woven wire cloth Technical requirements and tests Tissus métalliques industriels — Exigences techniques et verifications.
4.4.3 For cut-to-size pieces, the permissible number of major blemishes and their positions shall be agreed with the purchaser.
Otherwise, the permissible number of major blemishes in cut-to-size pieces shall be determined according to Table 2.
4.5 Flatness
Unless otherwise agreed between the supplier and purchaser, wire cloth rolls and pieces shall not necessarily be supplied to lie flat.
If the purchaser requires flat wire cloth, the means of verifying flatness shall be agreed with the supplier.
4.6 Surface conditions
Woven wire cloth may be covered with a film of oil as a result of the weaving process.
The wires may show traces of auxiliary materials used in the drawing process. Depending on the wire material, there may be traces of corrosion.
The surface may show markings caused by the drawing and/or weaving process. NOTE The depth of crimp generally differs between warp and weft wires.
4.7 Weaving wire
4.7.1 Material
The purchaser shall specify the choice of material with respect to
a) the final application of the woven wire cloth, e.g. resistance to environmental corrosion, compatibility with food products, etc., and
b) further processing, e.g. suitability for shaping, welding, and surface treatment. Materials shall be designated in accordance with appropriate standards or, if none exist, in accordance with commercial specifications.
4.7.2 Maximum permissible error on wire diameter
Prior to weaving, the maximum permissible error on wire diameter shall be as specified in Iso 4782.
The weaving process normally distorts the wire and affects its diameter, which is no longer maximum
permissible error after weaving. The wire diameter is measured as specified in 51.
5 Test methods
5.1 Wire diameter, d (see 4.7.2)
Prior to weaving, the diameter of the wire shall be calculated as the mean of any two measurements taken at right angles at the same cross-section.
The wire diameter may be determined after weaving by using one of the following procedures:
a) by measuring wires which have been loosened from the woven wire cloth (see Figure 3) b) by measuring the wires in the cloth, if there is sufficient space for the measuring instrument.ISO 9044:2016 pdf free download.
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