Rolling Mill Continuous Operation Deviation Handling
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Solution Overview
Problem
Rolling mills face production losses and potential damage due to process deviations that prevent the production of desired products, leading to the need for stopping operations or producing scrap.
Innovation Solution
Implementing a method where the rolling mill operates in continuous mode until a deviation occurs, then switching to discontinuous mode to allow for flexible production of alternative products, using a rolling stock feed device to manage the rolling process and a control device to monitor and adjust operations, enabling the production of alternative products or maintaining continuous operation if feasible.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the rolling mill operates in continuous mode to maintain high productivity, then production efficiency is improved, but when a process deviation occurs the entire system must be stopped leading to production losses
Solution Approach 1:
The rolling mill system is segmented into multiple independent rolling lines, each capable of operating autonomously. When a deviation occurs in one line, only that specific line is affected while others continue operating, preventing complete system shutdown and maintaining overall production continuity.
Solution Approach 2:
The system dynamically switches between continuous and discontinuous operating modes based on real-time process conditions. When deviations are detected, the system transitions to discontinuous mode for affected lines while maintaining continuous operation elsewhere, optimizing both productivity and reliability adaptively.
2Manufacturing precision
If the rolling mill stops operation to remove defective rolling stock, then product quality is maintained, but production losses occur and potential damage to equipment may result
Solution Approach 1:
The defective or problematic rolling stock is extracted and removed from the continuous production flow using separate handling mechanisms. This allows the main production line to continue operating without interruption while defective materials are isolated and removed, maintaining both quality standards and production continuity.
Solution Approach 2:
An intermediary buffer zone or holding area is introduced between the rolling process and the finishing line. This intermediary space allows for the insertion or removal of rolling stock without disrupting the continuous operation of the rolling mill, enabling quality control actions without production stoppage.
3Productivity
If the rolling mill operates continuously to maximize output, then productivity is improved, but flexibility to handle process deviations and produce alternative products is reduced
Solution Approach 1:
The rolling mill system is designed with multi-functional capability, where each rolling line can produce different product types and can operate in multiple modes (continuous and discontinuous). This universality allows the system to maintain high productivity while adapting to various production requirements and handling process deviations by switching to alternative product production.
Data Source
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AI summary
The invention relates to a rolling mill (1) for producing rolled rolling stock (G), a machine-readable program code (9), a storage medium (10), a control and/or regulation device (8) for a rolling mill (1) for producing rolled rolling stock (G), and a method for producing rolling stock (G) which was rolled in a rolling train (2) of a rolling mill (1), in particular a continuous casting and rolling mill, wherein the rolling mill (1) is operated in a continuous manner by means of integrally forming the rolling stock during scheduled operation from a supply device (6, 6') which supplies the rolling stock to the rolling mill (1), in particular a casting device (6) and/or a winding device (6') for rolling stock, to at least one finishing rolling train (2) that is arranged downstream of the rolling stock supply device (6, 6'), as viewed in a mass flow direction, by means of guiding the rolling stock (G) into the finishing rolling train (2) in a continuous manner and rolling it to form a first outflow product (A) in the finishing rolling train (2) in a continuous manner. The operation of the rolling mill (1) is monitored for the occurrence of a deviation from the scheduled operation of the rolling mill (2) that influences the rolling process, wherein in case of a deviation measures are taken to examine (100, 101) whether a second outflow product (A*), which is different from the first outflow product, can still be produced (102) considering the deviation. If the second outflow product cannot be produced, the operation of the rolling mill (1) is altered from a continuous operation to a discontinuous operation (106), whereby means can be provided for reducing production failures caused by undesired process deviations in a rolling mill.