DELTA SENSOR

PRODUCT INTRODUCTION

DELTA provides a wide range of high-performance sensors and measuring systems for continuous casters, hot rolling mills, processing lines and other extreme condition applications.

Thanks to over 65 years of experience in the severe steel mill environment, DELTA has the know how to satisfy the most demanding applications.

Products

1. Hot Metal Detectors (HMD)
2. Infrared Loop Scanners
3. Optical Barriers (CMD)
4. Proximity Switches
5. Laser Measuring Sensors
6. Measurement Gauges

Applications:

1. Continuous Caster
2. Hot Rolling Mill Long
3. Hot Rolling Mill Flat
4. Cold Rolling Mill & Processing Lines

PRODUCT IN DETAILS

Hot Metal Detectors (HMD)

The scanning optical system, in association with state-of-the-art infrared photocell technology, is the optimal solution for accurate, fast and reliable detection of product, whatever its size and its temperature. The Scanning Hot Metal Detector Rota-Sonde DC works under adverse conditions such as water, steam, dust or scale. It is particularly well adapted to applications where the change of the process results in a significant variation of the temperature of the product or a variation of its emissivity factor.

Product code list:

Infrared Loop Scanners

The Infrared Loop Scanner Rota-Sonde TS optically scans the field to be controlled and does not need any optical adjustment. It accurately measures the size of the loop on wire, rod and profile mills, even for special metals, and in the presence of steam and fumes. DELTA infrared sensor TS controls loops, centers hot strip or plate and provides positioning information for a wide range of applications.

Product code list:

Optical Barriers (CMD)

The Optical Barriers have been designed with aluminium cast housing, optional air purge and water-cooling for use in harsh steel mill environments. Laser Barriers are used in applications where steam, dust or fumes are heavy, as in the case of a water spray chamber, a scarfing machine or a reheating furnace.High temperature reflectors are able to work in ambient temperatures up to 400 °C.

Proximity Switches

The Long Range Proximity Switches IG120 or IW100 are housed in sturdy fiberglass cases and are completely sealed from dust and moisture. They have a sensing range up to 120 mm and a sensing field up to 1200 mm.The High Temperature Inductive Proximity Switches IH can work in ambient temperatures up to 180 °C.The MHM Magnetic Proximity Switches are robust sensors that are able to work in the difficult conditions of the steel industry.

Laser Measuring Sensors

The Trilas TL series and Dilas FT series are digital, high resolution, non-contact laser distance meter sensor. The target may be hot (up to 1300 °C) or cold, stationary or moving. By combining several sensors, dimensional measurements and shape readings can be achieved.Typical applications include slab width and length measurement on continuous caster; slab, bloom, billet positioning; measurement on forging machine; bloom, billet length; diameter measurement; strip loop control.

Measurement Gauges

DELTA provides innovative very compact and accurate measurement gauges used in Hot Strip Mills, Plate Mills and Strip Processing Lines. They have been developed for installation in the extreme environmental conditions of the metal industry using the latest technologies with high resolution and high-speed digital cameras.

DELTA SENSOR

APPLICATION INTRODUCTION

1. Continuous Caster
   1. Bloom - Billet Continuous Caster

• Length measurement
• Detection of bloom/billet
• Positioning

In order to deliver the right products to the hot rolling mills, it is important to measure the dimensions of slabs, billets or bloom produced in the continuous caster. DELTA has designed special laser sensors able to make non-contact measurement with high accuracy on hot products, and to withstand the difficult environment of the continuous caster. Typical applications of DELTA sensors include the detection of the product at different locations such as before marking machine or deburring machine.

1.2. Slab Continuous Caster

https://www.deltasensor.eu/en/Applications/Continuous-Caster/Slab-Continuous-Caster

• Width measurement
• Length measurement
• Detection

In order to deliver the right products to the hot rolling mills, it is important to measure the dimensions of slabs produced in the continuous caster. DELTA has designed special laser sensors able to make non-contact measurement with high accuracy on hot products, and to withstand the difficult environment of the continuous caster. Typical applications of DELTA sensors include the detection of the product at different locations such as before marking machine or deburring machine.

1. Hot Rolling Mill Long
   1. Bloom - Billet Reheat Furnace

• Length measurement
• Skew control
• Positionning

The charging operation is critical. It is important before moving the billet or bloom into the furnace to know the length and the position of the head and tail in order to avoid any damage.

On the discharging side, it is also important to detect the product and to know its position and eventually the skew.

1. Bar Wire Mill

https://www.deltasensor.eu/en/Applications/Hot-Rolling-Mill-Long/Bar-Wire-Mill

• Hot product tracking
• Cropping control
• Rolls gap control
• Loop control

Hot Metal Detectors (HMD) are designed for tracking hot products at the different stages of the hot rolling process. In critical operation such as for the control of the shear (head/tail crop, or cut to length) it is important to rely on accurate sensors which will detect in less than 1 ms the head and tail, independently of the position, size or temperature of the bar. For these applications, scanning HMD are recommended due to their narrow lateral field. The use of the latest technology of infrared detector allows the detection of products down to 180°C, for detection after water quenching.

1. Section Mill

• Hot product tracking
• Length measurement
• Cropping control

The optimization of hot rolling processes requires the use of accurate and reliable sensors for detection and measurement.

DELTA has developed a range of non-contact sensors able to survive the extreme conditions of the steel mills environment: high ambiant temperature, high infrared radiation level, dust and steam.

1. Tube Mill

• Product tracking
• Cropping control
• Length measurement
• Roll gaps control

The optimization of hot rolling processes requires the use of accurate and reliable sensors for detection and measurement.

DELTA has developed a range of non-contact sensors able to survive the extreme conditions of the steel mills environment: high ambiant temperature, high infrared radiation level, dust and steam.

1. Hot Rolling Mill Flat
   1. Slab Reheat Furnace

• Detection
• Positionning
• Tracking
• Length / Width measurement

Typical applications in slab reheat furnace include detection, positioning and measurement of slabs on the charging table. DELTA sensors are able to work even on the very rough surface of slabs and to survive to the vibration and the heat especially in case of hot charging. DELTA has also developed some unique sensors for detection of slabs inside reheat furnace.

1. Hot Strip Mill - Plate Mill

• Centering control
• Rolls gap / guides control
• Tracking
• Cropping control

From the exit of reheat furnace to down coiler, DELTA hot metal detectors, infrared scanner and laser measuring sensors are extensively used for detection, edge positioning and measurement. They are able to work with high accuracy and reliability in the harsh environment of hot mills: high ambient temperature, heat radiation, steam, water, dust…

1. Measurement Systems for Hot Strip Mill & Plate Mill

• Width measurement
• Cropping control

The ability to precisely measure the strip and plate dimensions during the hot rolling process is essential for the production of high-quality steel and for achieving an optimum yield. DELTA has developed a range of gauges for installation in the extreme environmental conditions of the metal industry using the latest technologies with high resolution and high-speed digital cameras.

1. Cold Rolling Mill & Processing Lines

• Diameter measurement
• Width measurement
• Level measurement
• Position control

DELTA has a range of non-contact laser sensor for measurement of coil dimensions and positioning, strip width, centring.

The stereoscopic Width Gauge DigiScan XD, with direct Ethernet connection and extensive data recording capability, helps customer to deliver product with the highest quality standards.