Process: Hot Rolling Mill
Prevent slab pile up by view inside the RHF
Home Case Studies Prevent slab pile up by view inside the RHF Prevent slab pile up by view inside the RHF Operator to get inside view of the walking beam furnace. Prevent any slab pile-up leading to loss in production. Visual camera to operate in high ambient temperature to withstand upto 2200 °C. Rugged camera in a stainless housing and complete electronics for safe monitoring of retraction / shutter device to actuate when water supply is accidentally switched off. 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 Profile temperature measurement to ensure quality of rolling and prevent cobble Compare edges temperature and centre to adjust the spray headers/ furnace Measure drop out temperature at exit of furnace even in presence of high oxidation Measure the bottom profile temperature to prevent hook-up / cobble 3Lakhs temperature points scanned Challenges Operator to get inside view of the walking beam furnace Prevent any slab pile-up leading to loss in production Visual camera to operate in high ambient temperature to withstand upto 2200 °C Solution 3 options for housing Rugged camera in a stainless housing and complete electronics for safe monitoring of retraction / shutter device to actuate when water supply is accidentally switched off. 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 Manual rod to check the camber measurement Case Studies Other Solutions in Reheating Furnace 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
Width Measurement for Camber detection
Home Case Studies Width Measurement for Camber detection Width Measurement for Camber detection Contact based length measurement. Inaccurate and manual process was not practical for continuous casting mill. Non-contact laser distance meter to work on hot surface upto 1300°C. 200°C ambient temperature with water cooling. 3nos of digital output and 1nos of Analog (4-20mA). Works on even dark surface (gray slabs). 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 Accurate width measurement for camber detection. Precise measurement : +/-1mm accuracy with 2σ Stainless housing with double walled cooling for ambient temperature upto 200 °C Works on product surface upto 1300 °C Analog and digital outputs Challenges Contact based length measurement Inaccurate and manual process was not practical for continuous casting mill Slab hitting the tunnel furnace refractory causing unplanned breakdown Solution Non-contact laser distance meter to work on hot surface upto 13000C. 200C ambient temperature with water cooling 3nos of digital output and 1nos of Analog (4-20mA) Works on even dark surface (gray slabs) Products and Accessories Light Barriers Technical Specifications Accuracy ± 1mm Repeatability ± 0.3 mm Measuring ranges up to 100 m on natural surfaces Measuring ranges up to 500 m on reflective foil 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 Manual rod to check the camber measurement Case Studies Other Solutions – Hot Rolling Mill 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
Profile temperature measurement for improved strip quality
Home Case Studies Profile temperature measurement Profile temperature measurement for improved strip quality Profile temperature measurement to ensure quality of rolling and prevent cobble Compare edges temperature and centre to adjust the spray headers/ furnace Measure drop out temperature at exit of furnace even in presence of high oxidation Measure the bottom profile temperature to prevent hook-up / cobble 3Lakhs temperature points scanned Slab Profile Temperature after Withdrawal /Drop Out Temperature on Discharge Side of RHF Head and Tail Temperature Profile at Entry of Roughing/ Finishing Mill Bottom Temperature Profile: Comparing drive and operator side variation Products and Accesories Thermal Cameras 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 Roughing Mill 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
Walking Beam Position using Rope Length Transmitter
Heavy duty rope length transmitter was designed for these harsh environment conditions:- higher force rope and thicker rope of 2mm with PA coating instead of standard 0.8mm / 1.35mm. Rope can be easily changed by the customer themselves. Open designed with grooves allowed dust not getting collected inside the drum. Home Case Studies Walking Beam Position using Rope Length Transmitters Walking Beam Position using Rope Length Transmitters 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 Detection of walking beam position Robust mechanism Double side pulley Efficient in harsh environment Challenges Proximity cables are going through the drag chain, which were frequently getting damaged leading to production downtime No provision to install any linear sensor inside the cylinder Solution Rope length transmitter externally installed to walking beam furnace Double side pulley used so the rope can rotate from 0 to 180 degree Magnetic encoder, output: 4-20mA Products and Accessories Heavy duty draw wire Double Guide Pulley 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 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
Slab Pusher Position Feedback
Rope got damaged and blocked the inlet nozzle. The plastic cover melted leading to failure of spring cartridge. The dust particle entered inside the housing. Heavy duty rope length transmitter was designed for these harsh environment conditions:-higher force rope thicker rope of 2mm with PA coating instead of standard 0.8mm / 1.35mm. Home Case Studies Slab Pusher Position Feedback Slab Pusher Position Feedback 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 Heavy Duty rope length transmitter for heavy duty environment Higher force Thicker rope (2mm) with PA coating Easy cleaning as it is open design Simple and robust mechanism Challenges Rope got damaged and blocked the inlet nozzle. The plastic cover melted leading to failure of spring cartridge The dust particle entered inside the housing. Solution Heavy duty rope length transmitter was designed for these harsh environment conditions:- Higher force rope Thicker rope of 2mm with PA coating instead of standard 0.8mm / 1.35mm Rope can be easily changed by the customer themselves Open designed with grooves allowed dust not getting collected inside the drum Products and Accessories Heavy duty Rope Length Transmitter Case Studies Other Solutions in Hot Strip Mill 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
Roll change with Rope Length Transmitters
Heavy duty wire rope length transmitter was installed which solved the problems by applying higher force, consisting of thicker rope, simple and robust mechanism. Home Case Studies Roll change with Rope Length Transmitters Roll change with Rope Length Transmitters 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 Uninterrupted roll change for maximum machine availability and uptime Slim design option available for space constraint installation 4-20mA output signal Other electrical options like SSI / Profibus available on request Challenges Reduce the roll change time to improve productivity yield. Solution Heavy duty wire rope length transmitter was installed which solved the problems by applying higher force, consisting of thicker rope, simple and robust mechanism.It has easy cleaning, and rope can be easily changed by the customer.It has open housing with grooves in the drum. Products and Accessories Draw wire/ Rope Length Transmitter Wire Hooks for fastening Ball joint Guide Pulley Double Guide Pulley 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 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
Best Practice: Cable protection for aggressive environments
Home Case Studies Best Practice: Cable protection for aggressive environments Best Practice: Cable protection for aggressive environments Cable protection systems for aggressive environments Aggressive fluids Mechanical loads High ambient temperatures Application areas of sensor cable protection Emulsion: Overheating/ underheating results in undesired shrinkage and white-spots. Emulsion (eg Deflector roll, inside the mill) : Cable hardens and finally cracks in presence of cutting oil. Hot Coke: Cable damage due to hot coke falling on the sensor cable like proximity, linear transducer, encoder Scales and Chips: Hot flying scales inside the rolling stand causes sensor cable breakdown. At down coiler, flying tail end cause cable break Heat Radiations: Most PVC cables and motor cables can withstand upto 80°C. With cable protection prevents cable melting preventing unplanned breakdown Products and Accessories ML-For mechanical Loads HT- For high temperature AF- For aggressive fluids Aggressive Fluids 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 steel and rolling mills industry 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
Measuring temperature inside metal in Reheating Furnace
The short wavelength high performance pyrometer with wall mounting monitors temperature of metal inside the reheating furnace and ensures slabs are optimally heated. Direct temperature measurement of metal is made possible with option to have a video view of the inside of the furnace. Home Case Studies Measuring temperature inside metal in Reheating Furnace Measuring temperature inside metal in Reheating Furnace Accurate temperature measurement of Runner stream 500nm short wavelength of sensor minimize influence of changing emissivity of hot metal 1000-2000°C instrument measuring range 3 options available: Portable, Fixed Type and Thermal Camera Plug and play system that works in high dusty environment Application and Pyromter installation photos Challenges Fast and accurate temperature measurement Traces of slag present on the top surface Changing emissivity of hot metal High dusty environment Solution Pyrometer selected with a very short wavelength at 500nm to reduce the influence of emissivity adjustment Peak-hold functionality holds the maximum temperature, which is of hot metal as the slag is typically lower temp Accessories:- 300mm pipe to prevent dust accumulation on the lens Air purging collar Water cooling jacket (nitrogen air can also be used) Multi-colour (red, green and yellow) LED display along with junction box Technical Specifications Measuring range: 1000-2000°C Spectral range: 500nm Resolution: 150:1 Response time: 1ms Accuracy: 0.3% of reading + 2°C Optris: Thermal camera for Multiple temperature points and visualisation in control room Products and Accessories Portable Pyromter Single Color Pyrometer 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 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
Pinch roll rod detection before laying head
Hot Metal Detector was used for the detection of long product rolling. The sensor’s small spot size is big enough to capture bar fluttering but without sensing crop ends. No water cooling was required as the sensor was provided with a fibre optic cable between the optics and the electronics. Electronics were kept 2m away from the heat zone Home Case Studies Pinch roll rod detection before laying head Pinch roll rod detection before laying head 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 Dual (Hystersis) Threshold: Customer could now create band to control signal on/off (Son and Soff. Avoid false triggering when temperature dropped for short durations due to presence of steam. Maintenance free modular design: Three-piece design (Optics, fiber optic cable, electronics) parts can be each purchased separately. Compact size: Optics are 25mx85mm. Possibility to implement redundancy and shadow mode operations to compare the results. Flexibility for variable response temperature threshold (400C..10000C) as per site: The object temperature can range from 1000C to 18000C. On special request model can start as low as 250⁰C to 600⁰C Standard-function, offset-function, alarm-function and jump-detection 2 free adjustable switching outputs Challenges The existing solution suffered from various problems Oversensing Scanning technology detected hot crops/ tail ends fallen on the track Flickering at water box exit: Bar temperature used to drop from 900⁰C to ~600⁰C with existing solution’s fixed triggered threshold. Expensive maintenance: Water cooling line had to be ON all times to avoid electronics failure. Redundancy not feasible Existing solution had a bulky design therefore it was not feasible to implement dual HMDs. Solution HMD optical sensor is ideal for this application. The sensor’s small spot size is big enough to capture bar fluttering but without sensing crop ends. (Optics 20 has 55mm spot size) No water cooling was required as the sensor was provided with a fibre optic cable between the optics and the electronics. With the FOC system, the sensor can operate at ambient temperatures upto 2900C without any water / air cooling. Electronics were kept 2m away from the heat zone. All components were housed in protective rugged stainless steel for protection against moisture, steam, shock and vibration. Optical filters protected against spurious radiation. Variable Response Temperature threshold could be set as per site requirement from 4000C to 10000C. Note: Other models that start as low as 1000C response temperature are also possible Products and Accessories Compact HMD for TMT bars Flicker free HMD for long and flat rolling Flicker free compact HMD for high ambient environment 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 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
Roll Change Detection: High temperature proximity for wet areas with heat radiation proximity fo
Short circuit protected proximity switch for 10 – 55 V DC with 3-wire technology was used for the accurate detection of roll change in very harsh operating conditions. The high temperature electronics can withstand ambient temperature of up to 100⁰C Home Case Studies Roll change detection on work roll backup roll in mill stand Roll Change Detection: High temperature proximity for wet areas with heat radiation proximity 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 Best solution for roll change proximity under most aggressive environment Reduction in roll change time to maximize production/ equipment availability High ambient temperature electronics (1000C and 1200C) Cable protection system from flying scales, sparks PBT housing material prevent corrosion of the housing easy to replace during shutdown Challenges Delays/interruptions in roll change as the feedback from proximity was not reliable Detection in harsh operating environment continuous water from spray headers; high ambient heat from the strips. Cable damage due to flying chips / scale PVC cable crackling from temp. cycling Solution Improvised field proven proximity used by SMS-Siemag | Primetals by high temperature electronics PBT housing designed to reduce impact of temperature cycling Silicone cable withstand 1800C Reduce damage from mechanical play by higher sensing 15|20|25mm Integrated cable protection Higher IP rating Inductive Proximity Switch Cable Protection 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 – Finishing Mills 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