Slit Rolling Guide
Pass sequence for 2 and 3 strands
Seperation into 2 and 3 strands
The separating technique:
The separating pass consists of two or more major sections, which are held together by small strips of material. During the slitting or separating process these sections are divided into separate bars or false round.
During the slitting operation the divided bars will have a little fin or fins of material either on the left, right or on both sides of the slit round stock. During the transformation of the slit round stock into an oval, these fins will be elongated. The rolled in fin on the final product has a depth that is accepted by the standards.
The technique is that the separating wheels apply diagonal forces to the splitting section, resulting into lateral forces splitting or dividing the small strips of material between the rounds.
Pass sequence for 4 and 5 strands
Separation into 4 and 5 strands
For more than 3-strand slitting a multiple strand separating guide, type MSL, is used. This guide differs from the 2- and 3-strand slit guide by having two sets of separating wheels incorporated in one unit. In principle the 4-strand slit guide, type MSL4, is a combination of two 2-strand slitting operations in one unit.
In the first stage sections 1 and 4 will be separated from the slitting pass and in the second stage sections 2 and 3 are divided. As a result, four separate strands are delivered and spread into the correct strand distance by delivery channels situated at the end of the separating guide.
In 5-strand slitting the multilpe strand separating guide, type MSL45, is used. This guide is a combination of a 2- and a 3-strand slitting system, again incorporated in one unit.
In stage one section 1 and 5 are separated, and in stage two sections 2, 3 and 4 are separated; resulting in five separate bars of false round to be delivered to the finishing section of the rolling mill.