Steel Plate Temperature Mapping for Full-Area Quality Assurance
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Solution Overview
Problem
Conventional steel plate quality assurance methods fail to provide comprehensive quality assurance across the entire area of steel plates subjected to controlled rolling and accelerated cooling, leading to inadequate temperature measurement and uneven quality due to temperature distribution issues, resulting in defective products and increased manufacturing costs.
Innovation Solution
A steel plate quality assurance system employing a combination of spot type and scanning radiation thermometers, along with optical fiber radiation thermometers, to measure and analyze temperature distributions on both surfaces of the steel plate across the entire manufacturing line, ensuring accurate temperature mapping and quality evaluation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional single-point temperature measurement methods are used, then the measurement system is simple, but the temperature distribution across the entire steel plate cannot be accurately captured
Solution Approach 1:
The steel plate surface is divided into multiple measurement zones, with spot type radiation thermometers positioned at specific locations (e.g., center and edge regions) to capture temperature variations across different segments of the plate, enabling comprehensive temperature mapping without requiring a single complex measurement system
Solution Approach 2:
The measurement approach transitions from single-point temporal measurement to multi-point spatial measurement by positioning multiple thermometers at different locations on the steel plate surface, creating a two-dimensional temperature distribution map that captures spatial temperature variations
2Reliability
If temperature measurement is performed only at the central portion of the steel plate, then the measurement equipment placement is simple, but the quality assurance of the whole area is insufficient
Solution Approach 1:
The steel plate surface is divided into multiple measurement zones, with spot type radiation thermometers positioned at specific locations (e.g., center and edge regions) to capture temperature variations across different segments of the plate, enabling comprehensive temperature mapping without requiring a single complex measurement system
Solution Approach 2:
Different measurement strategies are applied to different regions of the steel plate based on their quality requirements, with multiple spot thermometers positioned at critical locations to ensure local temperature control accuracy where it matters most for final product quality
3Manufacturing precision
If multiple thermometers are positioned at various locations to measure entire area temperature, then the temperature distribution can be accurately captured, but the equipment complexity and cost increase
Solution Approach 1:
Rather than measuring every point on the steel plate surface, spot type radiation thermometers are positioned at strategically selected critical locations (such as center and edge regions) to capture the essential temperature distribution pattern, providing sufficient information for quality control without the excessive complexity of complete surface coverage
Solution Approach 2:
The temperature distribution pattern captured at multiple discrete measurement points is used to create a representative model of the overall steel plate temperature field, allowing quality assessment of the entire plate based on measurements from selected locations rather than requiring exhaustive measurement of every point
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This system enables rapid and accurate quality determination of steel plates post-finishing rolling and accelerated cooling, preventing extensive nonconformities and reducing manufacturing costs by ensuring uniform quality across the entire plate area, thus improving yield and reducing alloying element requirements.
Implementation Method 1
a scanning radiation thermometer and a spot type radiation thermometer each of which is made up of a plurality of high-temperature thermometers and low-temperature thermometers are disposed on the downstream side in the advancing direction of the steel plate manufacturing line of said accelerated cooling equipment
Data Source
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Figure 4
AI summary
Steel plate (3) quality assurance equipment comprising, together with a steel plate manufacturing line including a finishing mill (2), and accelerated cooling equipment (5) installed on the downstream side of the finishing mill (2) as to the advancing direction of the steel plate manufacturing line: temperature measurement means (6, 7) configured to measure steel plate temperature; and measured temperature analyzing means configured to analyze the measured steel plate temperature; wherein a scanning radiation thermometer (6c, 6d ) and a spot type radiation thermometer (7c, 7d), each of which is made up of a plurality of high-temperature thermometers and low-temperature thermometers are disposed on the downstream side in the advancing direction of the steel plate manufacturing line of said accelerated cooling equipment (5).