The article, based on analysing the grease lubrication system in thin slab caster, targeting the problem existing in the actual application, proposes the applying and managing method against the system.

Analysis results indicate:absent of lubrication among out-strands leading to a lot of wire breaking is direct cause for wire rope sudden breaking in use; the main causes of wire breaking between strands are unsuitable lubrication process in wire rope production,bad lubricating grease,unsuitable lubrication maintenance mode and time,without use special maintenance lubrication grease.