Slit Rolling De-Ribbing for Symmetrical Round Wire Rods
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Solution Overview
Problem
Existing wire rod mills struggle to produce high-quality plain round wire rods efficiently due to the inability to control the slitting process, resulting in asymmetrical slit sections with residual ribs that compromise material quality and production rates.
Innovation Solution
A slit section pass formation unit with symmetrical roll profiles and de-ribbing mechanisms, such as punch and die methods, abrasive wheels, or interlocking slit rolls, to ensure complete removal of the rib, producing symmetrical slit rods that can be further processed into high-quality round wire rods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If twin strand rolling is used to increase production rate, then productivity increases, but manufacturing precision deteriorates due to loss of control of the section being rolled
Solution Approach 1:
The rolling process is segmented into separate finishing lines, with each line independently processing one strand. This segmentation allows each line to maintain precise control over its respective strand while the overall system achieves higher productivity through parallel processing of multiple billets.
2Productivity
If slitting technology is used to produce multiple finished sections from a single line, then productivity increases, but manufacturing precision deteriorates due to inability to control the slitting section tightly enough
Solution Approach 1:
The slitting operation is performed as a preliminary action before the finishing rolling process. By pre-slitting the strand into sections with accurate dimensions and removing the rib in advance, the subsequent finishing lines receive precisely prepared material that maintains manufacturing precision while enabling higher overall productivity.
3Productivity
If twin strand rolling is used to increase production, then productivity increases, but reliability deteriorates due to inability to balance quenching and produce same metallurgical properties
Solution Approach 1:
The quenching process is segmented into individual quenching zones for each finishing line, allowing independent control and balancing of quenching parameters for each strand. This ensures that each strand receives optimized quenching treatment to achieve consistent metallurgical properties despite processing multiple billets simultaneously.
Data Source
AI summary
Disclosed within is a slit section pass formation unit having a pair of rolls and a de-ribbing means, where the pair of rolls has a roll profile configured to produce a pair of slit rods with symmetrical dimensions, the pair of slit rods connected via a rib, and the de-ribbing means to remove the rib in its entirety forming a first slit rod and a second slit rod.