The best way to evaluate the existing rolling practices in a tandem rolling mill is by reviewing the mill setup. We can readily provide you with such a review. Most of the necessary statistics can be obtained by analyzing the level-II data that are typically available in such mills. We could also sample our data based on mill floor observations that are invaluable and are preferred in many instances.

 

The setup review is therefore intended to assess the effectiveness of the mill setup calculation in terms of head-end threading delays, head-end gage control and mill power loading. The extent to which manual adjustment of the setup program (by the rollers) is necessary is another measure of the mill setup performance.

 

We can provide you with the following reviews:

 

• Gap time analysis
• Threading stops and delays (per product gage and per stand)
• Measured mill throughput in terms of tons/hr
• Maximum power analysis (per product gage and per stand)
• Maximum speed analysis (per product gage and per stand)
• Reduction and tension patterns

In addition to the level-II data, some of the mill characteristics may be needed for such analysis. They are mill stretch, stand power loss and backup roll bearing oil film behavior. These are normally generated by empty mill tests on a warm mill.