Steel Refining Control System for Stable Quality
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for managing the molten steel refining process fail to stabilize the weight, chemical components, and temperature of molten steel simultaneously, leading to variations in operation that can obstruct the securement of stable quality.
Innovation Solution
A program that executes calculations for each operation in the refining process to determine the time required for various operations and performs scheduling to manage the addition of scraps and ferroalloys, thereby supporting the entire refining process and stabilizing the three key factors of molten steel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing methods are used to manage molten steel refining process, then component adjustment and temperature management can be performed, but stable quality securement is obstructed due to variations in operation depending on operator skill level
Solution Approach 1:
The system enables self-service by automatically calculating and determining the optimal sequence and timing of operations (oxygen heat-up, slag-making agent addition, scrap addition, ferroalloy addition, vacuum degassing, and energization heat-up) based on initial molten steel conditions, eliminating the need for operator discretion and ensuring consistent quality outcomes regardless of operator skill level
Solution Approach 2:
The system changes parameters by dynamically calculating operation timing and sequence based on initial temperature, weight, and component composition of the molten steel, adjusting the refining process parameters automatically to achieve target specifications while maintaining stable quality
2Reliability
If comprehensive support for the entire refining process is provided, then operation variation can be suppressed, but the complexity of the management system increases
Solution Approach 1:
The system segments the complex refining process into distinct operational steps (oxygen heat-up, slag-making agent addition, scrap addition, ferroalloy addition, vacuum degassing, and energization heat-up), calculating and managing each segment separately with specific timing and sequence requirements, making the overall complex process manageable and controllable
Solution Approach 2:
The system performs multiple functions by simultaneously managing weight adjustment, component composition control, and temperature management across all refining operations, providing comprehensive support for the entire process through a single integrated management approach
Data Source
Figure 1
Figure 2
Figure 3
AI summary
Provided are a program, an information processing apparatus, and an information processing method capable of suppressing a variation in operation for every operator. A computer (information processing apparatus) executes first calculation related to an oxygen heat-up operation for raising a molten steel temperature at the initial stage of refining, second calculation related to a slag-making agent adding operation, third calculation related to a component fluctuation of molten steel due to a vacuum degassing process, fourth calculation related to addition of ferroalloys, fifth calculation related to addition of scraps, sixth calculation related to energization heat-up for supplementing lowering of the molten steel temperature due to addition of ferroalloys and scraps, seventh calculation related to the molten steel temperature that lowers in a vacuum degassing process, and eighth calculation related to energization heat-up for supplementing lowering of the molten steel temperature due to the vacuum degassing process.