Fundamentally improve the operating reliability and positioning accuracy of the ladle crane hoist used in steel production. Installation of the modular universal encoder system U-ONE, which offers the following special characteristics • Basic unit mounted directly at the hoist drum by using a double joint coupling on a tailor-made base plate construction • Signal transmission via fiber optic cable prevents EMC problems
Home Case Studies Hoist /Drum: Improved operating reliability and positioning accuracy at the ladle crane
IR technology for the component inspection of semiconductors, printed circuit boards and assemblies
Pilger mill in tube rolling mills - hot and cold pipe detection
- Lifespan of semiconductor elements is dependent on temperature – with an increase in temperature of 10 °C causes a 50% reduction in lifespan
- Developers of electronic assemblies are faced with the challenge of allowing for the thermal behavior of circuit boards and assemblies
Challenges
- Increasing integration density results in high heat resulting from power loss in the components
- Continual miniaturization impedes efficient heat dissipation
- Large currents are becoming more common with the use of power electronics
Solution
- Quick, precise and non-contact measurement allows easy hot spot detection
- Errors in design such as defective components, incorrectly dimensioned circuit paths or poorly soldered joints can be detected using thermal profiles
- Enables recording of very small components and structures on a circuit board
Specifications
- Temperature range:
-20 °C to 900 °C
(optional up to 1 500 °C) - Spectral range: 8 to 14 µm
- Frame rate: up to 125 Hz
Products and 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
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