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Tilt Angle Sensor For Radial Gate Positioning

To calculate the flow of water via measuring the tilt angle of radial gate. Safety limit detection i.e. Indication if the radial gate is fully open or fully closed. Environment conditions included high humidity and huge vibrations. Home  Case Studies Tilt Angle Sensor For Radial Gate Positioning Tilt Angle Sensor For Radial Gate Positioning Home    Case Studies    Pilger mill in tube rolling mills – hot and cold pipe detection Pilger mill in tube rolling mills – hot and cold pipe detection Tilt angle sensor with high price to performance ratio Cost effective and reliable IP68 Inductive technology Oil filled to dampen oscillations Challenges To calculate the flow of water via measuring the tilt angle of radial gate. Safety limit detection i.e. Indication if the radial gate is fully open or fully closed Environment conditions included High humidity Huge vibrations Solution Tilt angle sensor with high price to performance ratio Cost effective and reliable IP68 Inductive technology Oil filled to dampen oscillations 4nos Control Output: 4 fast PNP outputs ; 5-30V/200mA 2nos Relay Output: End point detection ; Potential free Site supervision to assist in installation ­Matching the 0o position of gate with 4mA ­Correct mounting position i.e. anticlockwise ­Field experience to troubleshoot: Continuity check, carbon on terminals, shielding check ­Training of site engineers Products and Accessories Tilt Angle Sensor Case Study Number TP3 Challenge The increasing flexibility of production lines requires a high adaptability of sensors. Continually changing object geometries, different temperatures and very high radiation or surrounding temperatures are no rarity. In a pilger mill those rough conditions can be found, among others in the production of seemless steel pipes. The raw steel blocks, each weighing a few tons are heated up first in a round oven at a temperature of 1300 °C. After descaling of the surface, the steel block is prepunched in a hole press with a strength from a converted 2000 t. In the next sloping rolling mill the growing pipe rotates between two rollers that are positioned at an angle to each other. The punching is widened to the size of the mandrel diameter. Previous solution / Competitor product N/A Solution The sensor that was installed at this application is the HMD OKA 2038.38 G with tube OL 19. The signal of the infrared sensors controls the movement of centering device and abutment. The point of view is restricted by the tube and prevents disturbances by steam in the cooling phase. An optimum adaptation to the operating conditions is given due to the adjustable response temperature. The HMD with self-learning response temperature (Auto-Teach function) is suited to continually changing conditions. The compact sensor with a stainless steel housing can withstand surrounding temperatures of up to 75° C. The use of a cooling jacket raises this up to 200° C. Alternatively sensors with fibre optic cables are available which permit an application at ambient temperatures up to 600° C without cooling. Customer Benefits Maintenance-free High temperature stability Recognition of hot objects at big distances Self adjustment with Auto-Teach or step switch for the response temperature Product Part number OKA 2038.38 G Brand Proxitron Accessories Piros swivel stand HM2 Tube OL 19 Pilot light unit (for alignment) DAK 308 + OL 26 Different cable lengths (e.g. 15 m) Customer Testimonial compared to previous solution or competition Case Studies Other Solutions in Power Sample case study title lorem ipsum here Short description of the problem solved, maybe include the client name. READ MORE Sample case study title lorem ipsum here Short description of the problem solved, maybe include the client name. READ MORE Sample case study title lorem ipsum here Short description of the problem solved, maybe include the client name. READ MORE View All

Overspeed switch EGSH 41 ensures safely limited speed in the mill stand

For precise speed control in rolling mills the main drives of the roll stands and the coilers need to be equipped with an encoder. In addition, it is often necessary to provide increased protection for personnel during special operating modes, such as: For this application Johannes Hübner Giessen has been working with Motor OEMs for many decades to provide complete solution ie. Electrical and mechanical components. Home  Case Studies Overspeed switch EGSH 41 ensures safely limited speed in the mill stand Overspeed switch EGSH 41 ensures safely limited speed in the mill stand Home    Case Studies    Pilger mill in tube rolling mills – hot and cold pipe detection Pilger mill in tube rolling mills – hot and cold pipe detection Safeguards personnel carrying out necessary work in the danger zone Switching points set without intervening in the PLC programming Safety certified encoder simplifies risk assessment Complete solution including safety mechanical parts and installation service Safety certified system solution consisting of heavy duty encoders and tailor-made mechanical attachments. Challenges In addition to sensing speeds for motor control and protection it is also necessary to implement the safety function SLS (Safely-Limited Speed) for the main drive and for each coiler. The purpose behind this measure is to safeguard personnel in the danger zone as they carry out necessary inspection and maintenance work on machinery. The conceptual solution designed to implement SLS should also take into consideration reliable mechanical assembly. Solution The first step was to document the requirements and the installation conditions at the customer’s site before drawing up an overarching concept for the different points of installation. System solutions consisting of safety-certified, hollow-shaft type overspeed switches EGSH 41 (SIL 2 / PL d) as well as attachments calculated for safety and guaranteed fault exclusion are at the core of our customized solutions. An additional encoder with incremental output for motor control and a speed switching output for motor protection were integrated in the system solution as required. Hübner specialists installed all of the system components and carried out control measurements to verify the accuracy of the installed equipment and documented the results. Turnkey encoder modernization by engineering support package with site measuring, construction, mounting and commissioning support. Products and Accessories Heavy duty programmable overspeed switch Speed feedback for main drives Adapter Shaft Tether 1:1 Replacement for Mechanical Cam Limit Switch Couplings Case Study Number TP3 Challenge The increasing flexibility of production lines requires a high adaptability of sensors. Continually changing object geometries, different temperatures and very high radiation or surrounding temperatures are no rarity. In a pilger mill those rough conditions can be found, among others in the production of seemless steel pipes. The raw steel blocks, each weighing a few tons are heated up first in a round oven at a temperature of 1300 °C. After descaling of the surface, the steel block is prepunched in a hole press with a strength from a converted 2000 t. In the next sloping rolling mill the growing pipe rotates between two rollers that are positioned at an angle to each other. The punching is widened to the size of the mandrel diameter. Previous solution / Competitor product N/A Solution The sensor that was installed at this application is the HMD OKA 2038.38 G with tube OL 19. The signal of the infrared sensors controls the movement of centering device and abutment. The point of view is restricted by the tube and prevents disturbances by steam in the cooling phase. An optimum adaptation to the operating conditions is given due to the adjustable response temperature. The HMD with self-learning response temperature (Auto-Teach function) is suited to continually changing conditions. The compact sensor with a stainless steel housing can withstand surrounding temperatures of up to 75° C. The use of a cooling jacket raises this up to 200° C. Alternatively sensors with fibre optic cables are available which permit an application at ambient temperatures up to 600° C without cooling. Customer Benefits Maintenance-free High temperature stability Recognition of hot objects at big distances Self adjustment with Auto-Teach or step switch for the response temperature Product Part number OKA 2038.38 G Brand Proxitron Accessories Piros swivel stand HM2 Tube OL 19 Pilot light unit (for alignment) DAK 308 + OL 26 Different cable lengths (e.g. 15 m) Customer Testimonial compared to previous solution or competition Case Studies Other Solutions in Hot Rolling Mills – Roughing Mills View All

Slab Detection in Excessive Steam (HMD)

On the roughing mill exit, there is a lot of steam due to the spray header. The steam obstructs field of view of the traditional scanning type HMDs as result, occasionally the signal flickers for a millisecond. The next generation HMD 4.0 from Proxitron have intelligent software features which allows to set dual thresholds (hysteresis). Home   Products    Sensor Technology Slab Detection in Excessive Steam (HMD) Slab Detection in Excessive Steam (HMD) Home    Case Studies    Pilger mill in tube rolling mills – hot and cold pipe detection Pilger mill in tube rolling mills – hot and cold pipe detection HMD under most aggressive environment Flicker free operation due to dual threshold (hysteresis) setting option Adjustable response temperature Withstand ambient 2000C (water-cooling) and 2900C (w/o water cooling) Diagnostic alarm feature Challenges On the roughing mill exit, there is a lot of steam due to the spray header. The steam obstructs field of view of the traditional scanning type HMDs as result, occasionally the signal flickers for a millisecond. Solution​ The next generation HMD 4.0 from Proxitron have intelligent software features which allows to set dual thresholds (hysteresis).  The upper threshold setting say at 6000C and lower threshold setting at 2000C. So when slab at 10000C cross the field of view of the HMD 4.0 detects the slab but due to momentarily presence of steam, slab temperature may appear to be lower than 600C will not cause the signal to flicker. Only if the temperature goes below the lower threshold setting i.e. 200C will HMD shows slab is not present.  Products and Accessories Hot Metal Detectors Accessories Case Study Number TP3 Challenge The increasing flexibility of production lines requires a high adaptability of sensors. Continually changing object geometries, different temperatures and very high radiation or surrounding temperatures are no rarity. In a pilger mill those rough conditions can be found, among others in the production of seemless steel pipes. The raw steel blocks, each weighing a few tons are heated up first in a round oven at a temperature of 1300 °C. After descaling of the surface, the steel block is prepunched in a hole press with a strength from a converted 2000 t. In the next sloping rolling mill the growing pipe rotates between two rollers that are positioned at an angle to each other. The punching is widened to the size of the mandrel diameter. Previous solution / Competitor product N/A Solution The sensor that was installed at this application is the HMD OKA 2038.38 G with tube OL 19. The signal of the infrared sensors controls the movement of centering device and abutment. The point of view is restricted by the tube and prevents disturbances by steam in the cooling phase. An optimum adaptation to the operating conditions is given due to the adjustable response temperature. The HMD with self-learning response temperature (Auto-Teach function) is suited to continually changing conditions. The compact sensor with a stainless steel housing can withstand surrounding temperatures of up to 75° C. The use of a cooling jacket raises this up to 200° C. Alternatively sensors with fibre optic cables are available which permit an application at ambient temperatures up to 600° C without cooling. Customer Benefits Maintenance-free High temperature stability Recognition of hot objects at big distances Self adjustment with Auto-Teach or step switch for the response temperature Product Part number OKA 2038.38 G Brand Proxitron Accessories Piros swivel stand HM2 Tube OL 19 Pilot light unit (for alignment) DAK 308 + OL 26 Different cable lengths (e.g. 15 m) Customer Testimonial compared to previous solution or competition Case Studies Other Solutions in Hot Rolling Mills View All

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