Thermo Scientific SIPRO Simultaneous Profile Gauge

Significance of the Topic

The control of strip thickness, temperature and profile in hot rolling mills improves material quality, reduces waste and boosts throughput and yield. Non-contact gauges that monitor multiple parameters in real time are essential for modern process optimization and quality assurance.

Objectives and Study Overview

This document presents the design and functionality of a simultaneous profile gauge for hot strip production. Key goals include delivering comprehensive process data on centerline and cross thickness, temperature, width, profile shape and edge form, enabling in-line control of mill operations to optimize raw material usage and scrap reduction.

Methodology and Instrumentation

The gauge uses two X-ray sources and a pyrometer with a linear detector array to acquire thickness and temperature profiles at 5 ms intervals. Key features:

• Alloy compensation adjusts measurements for varying steel compositions
• High spatial resolution of 5 mm across the strip enables detailed contour analysis
• Fast centerline AGC output with low noise delivers real-time feedback for automatic gauge control
• Water-cooled stainless steel housing protects sensors in harsh mill environments

Instrument calibration and edge detection algorithms ensure position-independent thickness profiling by combining stereoscopic views and tilt compensation.

Main Results and Discussion

Real-time measurements across 100 % of strip length provide:

• Cross profiles for thickness, temperature and flatness every 5 ms
• Crown, wedge, edge drop and ridges detection for automatic correction
• Integrated diagnostics for remote maintenance and quality analysis

These capabilities enable immediate in-bar profile corrections, improving product uniformity, reducing off-tolerance coils and lowering scrap rates.

Benefits and Practical Applications

Implementation of the gauge yields:

• Raw material savings through in-line compensation of off-gauge conditions
• Enhanced mill throughput under tight uptime requirements
• Assured product quality and compliance with world-class specifications
• Seamless integration with mill control systems for advanced flatness control

Future Trends and Opportunities

Advances may include broader non-ferrous alloy support, AI-based profile optimization and expanded connectivity for Industry 4.0 integration. High-speed data analytics can drive predictive maintenance and process adaptation in real time.

Conclusion

The simultaneous profile gauge introduces a robust, high‐resolution solution for complete strip characterization at the hot mill exit. By combining fast, accurate thickness and temperature data with advanced diagnostics, it underpins efficient process control, cost reduction and superior product quality.