WCA November 2010

Testing and measuring

clean wire after drawing

Accurate length saves costs

Sikora’s Length 6000 is a system for non-contact online length measurement of cables. For this method, the product image and its movement are defined and thus the speed and the produced length can be calculated. The technology of the Length 6000 is based on an optical measuring principle. In combination with two laser diodes, two image sensors are positioned next to each other. In sequence the cable passes both image sensors.

candor

can do wire equipment

Typical Length 6000 monitor image ❍ ❍

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The time the product takes to move between the first and second sensor is measured. Even with reflective surfaces the high-resolution image sensors determine the structure using patented diffraction analysis. Mechanical systems provide only limited precision, due to the slip on the product surface, and the Doppler method is not suitable for reflective, or smooth surfaces, for example, and requires an accurate product guiding. The technology of the Length 6000, which defines the length through comparison of image patterns, is reliable for round products and for products with reflective and smooth surfaces. The system calculates the length independent of the product direction and measurements start from zero line speed. Length measuring devices ensure that the required cable length is produced and delivered, as short- or over- lengths always lead to profit cuts.

CANDOR SwedenAB Tel: +46 11 21 75 00 Email: info@candorsweden.com Fax: +46 11 12 63 12 Website: www.candorsweden.com

Sikora AG – Germany Email : sales@sikora.net

Fax : +49 421 48900 90 Website : www.sikora.net

Regular die checks safeguard product quality

Die Quip specialises in machines to produce dies in-house, to reduce production time and improve quality. It is important to ensure that dies are within tolerance before production begins and, if there are drawing problems, to be able to assess whether the die or the process is at fault. The ability to measure die diameter, angle, bearing length and surface finish will reduce die changes and ensure product quality. Wire mills without an internal die shop should have an inspection programme for incoming dies to prevent out of tolerance dies getting into the production process. Die Quip provides simple tools used in die production, such as calibration pins to check the diameter, eye loupes for surface inspection, angle plug gauges to check the reduction angle or Die Quip’s own Die Check to measure bearing lengths. Final inspection of supplier or in-house dies can be done with optical and tracing systems for dies of 0.5mm and larger. To inspect surface quality, Die Quip has an extensive line of microscopes with a range of magnifications, lighting options, die stands and cameras to capture the image. Die Quip also offers calibration gauges treated with black oxide to show exactly when gauges are wearing out of tolerance. No more guess work or tedious measuring of gauges to determine if still in specification - simply use the gauge until the treatment wears off and then replace it. These gauges have a 10 micro- inch surface finish and are hardened to 60–62 Rockwell C. They are available individually, or in sets from 0.22mm–12mm.

Die Quip Corporation – USA Fax : +1 412 835 6474 Email : diequip@diequip.com

Website : www.diequip.com

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Wire & Cable ASIA – November/December 2010