Why is the finished wire drawing machine occasional bright wire, shrink wire, wave, bamboo and other phenomena?

High-speed wire drawing process, if there bright wire, wire and other phenomena of contraction, the main and wire lubrication, cooling the poor, but also with the raw materials, heat treatment, surface treatment process-related; If there is waves, bamboo and other phenomena, can be by adjusting the anti-vibration device, alignment, etc. to eliminate