The Shop Floor is the place to find "how-to" topics from installing dies to the correct procedure on how to clean a plant floor. Each topic is brought to you by well-known wire and cable industry professionals.
The recommended contact point on the reduction zone of a die should be 75% to 100% of the wire diameter. The bearing (or land) of a die is downstream of the drawing cone, and although it plays no part in the prior reduction in area of the wire, it does help to preserve the wire size. A bearing surface that is too large will increase the drawing stress because of friction.
This course presents a classification of wire breaks from a perspective that compares material defects to process-related problems. Rod defects will include both casting and rolling issues such as internal voids, foreign contaminants, rolled-in scale, hot cracks, and surface porosity. The effects of wiredrawing speed and lubrication will be discussed with respect to generation of fines, shaving, galling, and other surface defects.
The Wire Association Int.
71 Bradley Road, Suite 9
Madison, CT 06443-2662
P: (203) 453-2777
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