Steel & Aluminium

Protect rolling mill assets and
ensure process quality with inline monitoring

In steel and aluminium production, water ingress into gear oil and incorrect additive concentrations in rolling oil directly cause equipment damage, surface defects, and costly scrap. FluidInspectIR® detects these events in real time — where standard lab analysis arrives too late to prevent the damage.

Book a technical call → Download datasheet
>£100k
Total saving
over 9 months — steel
R²=0.99
Lab-equivalent accuracy
for additive monitoring
Real-time
Water detection —
impossible with lab sampling
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Steel hot rolling mills
Water detection · Gear oil condition · Contamination
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Steel cold rolling mills
Rolling oil condition · Additive concentration · Water
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Aluminium cold rolling
Additive monitoring · Concentration · Automation enablement
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Mill gearboxes & drives
Viscosity · TAN · Water · Oxidation · Contamination
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Drawing & wire rod lines
Drawing compound concentration · Contamination
The challenge

Lab sampling is too slow for the speed of rolling mill processes

In steel rolling, water ingress into gear oil causes rapid lubricant degradation and equipment damage. Standard lab analysis cannot detect water break-in events in real time — leaving critical equipment exposed between sampling intervals.

In aluminium cold rolling, additive concentration is time-critical for producing top-quality product. Outsourced lab sampling took too long — delaying additive top-up decisions and consuming valuable technician time on routine sampling instead of value-add activities.

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Water break-in events missed between samples

Water ingress in steel rolling gear oil can destroy equipment within hours. A lab sample taken weekly cannot catch an event that happens between intervals.

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Additive top-up decisions arrive too late

Outsourced lab turnaround takes days. By the time additive depletion is confirmed, production quality is already compromised and costly scrap has been generated.

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Technician time consumed by routine sampling

Valuable human assets are tied up collecting and shipping samples instead of performing higher-value maintenance and process improvement tasks.

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H&S risk from hot oil and rolling equipment

Manual sampling near rolling mills and hot oil systems exposes maintenance technicians to significant H&S risks — risks that inline monitoring eliminates entirely.

How FluidInspectIR® helps
Inline detection — what lab sampling cannot provide

Real-time water detection up to 30% concentration

FluidInspectIR® detects water in gear oil up to 30% concentration in real time and can trigger automated water removal systems — catching every water break-in event that lab sampling would miss entirely.

Lab-equivalent additive concentration monitoring

FluidInspectIR® matches laboratory accuracy (R²=0.99) for additive concentration measurement in rolling oil — delivering real-time data that enables timely top-up decisions and opens the path to full automation.

Automated additivation — no more manual sampling

Continuous inline data feeds directly into automated additivation systems — eliminating the need for manual sampling and enabling closed-loop concentration control for consistent product quality.

Freed technician time for higher-value work

Inline monitoring eliminates routine oil sampling from the technician's schedule — freeing skilled maintenance staff for higher-value inspection, improvement, and reliability work.

Automated shutdown on contamination event

FluidInspectIR® output can trigger automated process interlocks on water or contamination detection — stopping the mill before product defects or equipment damage occur.

Continuous gear oil health across mill drives

Monitor viscosity, TAN, water and oxidation in mill gearboxes and drive systems continuously — detecting degradation trends that would be invisible between quarterly lab samples.

Pillars of value
Six financial levers for steel and aluminium producers

Steel and aluminium customers typically deliver four or more of these pillars simultaneously — driving returns across fluid cost, equipment protection, quality, and safety.

↓ Oil Cost Reduction

Reduce oil and additive spend

Condition-based oil management in gear and rolling oil systems replaces conservative fixed-interval changes. Additive top-up is data-driven rather than schedule-driven — reducing additive consumption and waste.

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↓ Avoided Unplanned Downtime

Catch water events before equipment damage

Real-time water detection in steel rolling gear oil prevents the rapid lubricant degradation that leads to mill gearbox failure. Each avoided unplanned shutdown saves £100,000+ in lost production and repairs.

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↑ Extended Component Life

Clean oil, less wear in mill drives

Tight oil condition control in gearboxes and drives reduces internal wear rates — extending component life, reducing rebuild frequency, and lowering capital replacement cost.

✓ Product Quality Control

Consistent additive concentration = consistent product

Maintaining correct rolling oil additive concentration in real time ensures consistent surface quality and reduces scrap rates — a direct bottom-line benefit in aluminium and steel production.

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✓ Automation Enablement

Closed-loop fluid management

FluidInspectIR® inline data feeds automated additivation systems — enabling fully closed-loop rolling oil management without manual intervention and freeing technicians for higher-value work.

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✓ Health & Safety

Eliminate manual sampling near rolling equipment

Manual oil sampling near hot rolling mills and gear oil systems carries significant H&S risk. Inline monitoring removes this exposure entirely — reducing incidents, PPE costs, and regulatory risk.

What gets measured
Parameters critical for steel and aluminium production
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Water content

Detect water break-in events in steel rolling gear oil up to 30% concentration in real time — entirely impossible with standard lab sampling.

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Additive concentration

Lab-equivalent (R²=0.99) real-time additive monitoring in aluminium and steel rolling oil — enabling timely top-up and closed-loop automation.

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Viscosity @40°C / @100°C

Monitor viscosity in gear and rolling oil systems — detects contamination, thermal breakdown, and oil mixing in mill drives.

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Total Acid Number (TAN)

Rising TAN in gear and hydraulic oil indicates oxidative degradation — critical for long-life lubricants in heavy mill drives.

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Oxidation level

Tracks oxidation in gear oil over time — projects when OEM limits will be reached and enables condition-based oil change decisions.

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Optical particle count (OPC)

4, 6 and 14 µm particle counts for hydraulic and gearbox circuits — detects wear debris and contamination ingress in mill drives.

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Emulsifier concentration

Tracks emulsifier level in water-mix rolling fluids — each water break-in event is captured in the concentration chart, enabling rapid investigation.

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Multi-parameter fingerprint

MIR spectroscopy provides a complete chemical fingerprint of rolling and gear oil — equivalent to a full lab analysis report, delivered in real time.

Case studies — Steel & Aluminium

Two validated deployments: £100k+ saved on steel rolling, lab costs eliminated on aluminium

Steel rolling — automated water detection: In steel rolling operations, FluidInspectIR® detected water ingress events in real time — capturing each event in the emulsifier concentration chart. Total saving over 9 months exceeded £100,000. Real-time water detection of this type is entirely impossible with standard lab analysis.

Aluminium cold rolling — additive monitoring: FluidInspectIR® matched laboratory accuracy and delivered additive concentration data in real time — enabling timely top-up decisions, freeing technician time, and opening the pathway to fully automated additivation in the future.

Discuss your application →
>£100,000
Total saving over 9 months — steel rolling water detection deployment
R²=0.99
Lab-equivalent accuracy for aluminium rolling oil additive concentration monitoring
↓ Oil Cost · ↓ Downtime · ✓ Quality · ✓ Automation
Four pillars of value delivered simultaneously across steel and aluminium deployments
Discuss your steel or aluminium application
Talk to our application engineers about your rolling mill.
Hot rolling, cold rolling, aluminium — we'll show you what real-time inline monitoring can detect that lab sampling misses.
📅 Book a technical call Download datasheet