This column is the third in a series concerning roll grinding in general, and what options are available when it is determined that the rolls on a three roll mill (TRM) do need grinding. Column #5 discussed the reasons that rolls need grinding. Column #6 discussed the options of just dealing with the roll set as a ROLL SET JOB (RSJ), or as a ROLL SET SWITCH (RSS). This column will discuss the options of dealing with the entire TRM. As in my previous columns, I would like to offer this invitation and this promise. If you have a question regarding TRMS, please email that question to me (firstname.lastname@example.org), and I promise to answer it. It is my intension to have your questions drive the content of these columns. And now, here I go with my seventh column.
For this column, the owner has already decided that he will send out the entire TRM for work. Once this decision has been made, the owner must realize that the TRM will be out of service for anywhere from 10 weeks to 18 weeks. And further, with either a rebuild or a remanufacture, the TRM must be brought up to ANSI 2017 (Please see my first column in Ink World). And also, with either a rebuild or a remanufacture, the TRM can be upgraded with any number of options. These can include manual-hydraulic roll set, electro-hydraulic roll set & apron set, automatic roll temperature control, product level sensing, conforming base to raise apron discharge height, manual or electric can tilter, etc., etc.