All the rolls have to be precisely vertically aligned to ensure the mechanical stresses they are exposed to are equally distributed. Up into now, the roll positions have been measured and documented manually in an expensive process that's also prone to error.
The new laser system provides highly precise digital measurements that take less time to complete. Measurement data is sent directly to the control unit, which prevents errors caused by manual data transfer. The data also allows technicians to monitor conditions at the plant, which means maintenance can be carried out in line with actual needs rather than at set intervals, which was previously the case.
Continuous casting plants cast liquid steel into slabs a few meters long and several centimeters thick. These slabs are guided along long lines between rolls. The rolls must be precisely vertically aligned. If they are not, they will be exposed to varying levels of pressure from the slab and will also exert different levels of pressure on the latter, which can negatively impact slab quality and damage the roll bearings.
The rolls are regularly calibrated to prevent these problems. The process involves removing individual segments of the strand guide line. Each segment contains several rolls, and measurements are taken by holding an iron ruler several meters long at a specific height above the rolls. Workers then measure the distance of each roll to the ruler and write down the results. This method takes time, can lead to errors, and becomes imprecise in the middle because the ruler bends at that point.
The new Simetal Opal laser measuring system measures all spots with equal precision and is very easy to use. The system's rotating laser emits beams that generate a reference line parallel to the top side of the rolls. A linear photodetector is vertically mounted on the rolls.
The distance between a roll and reference line is determined according to which photodetector segment the laser beam hits. Workers move along the line and place the detector on each roll, whose alignment is then precisely measured down to less than one-tenth of a millimeter.
Simetal Opal is part of a continuous casting plant monitoring concept developed by Siemens. The system can be integrated into existing plants and is already being used in the manufacturing process at the Siemens facility in Shanghai.
Dr. Norbert Aschenbrenner | Siemens InnovationNews
More functionalities: Microstructuring large surfaces with a UV-laser system
05.07.2018 | Fraunhofer-Institut für Lasertechnik ILT
A factory to go
04.07.2018 | Fraunhofer Institute for Manufacturing Engineering and Automation IPA
Scientists at the University of California, Los Angeles present new research on a curious cosmic phenomenon known as "whistlers" -- very low frequency packets...
Scientists develop first tool to use machine learning methods to compute flow around interactively designable 3D objects. Tool will be presented at this year’s prestigious SIGGRAPH conference.
When engineers or designers want to test the aerodynamic properties of the newly designed shape of a car, airplane, or other object, they would normally model...
Researchers from TU Graz and their industry partners have unveiled a world first: the prototype of a robot-controlled, high-speed combined charging system (CCS) for electric vehicles that enables series charging of cars in various parking positions.
Global demand for electric vehicles is forecast to rise sharply: by 2025, the number of new vehicle registrations is expected to reach 25 million per year....
Proteins must be folded correctly to fulfill their molecular functions in cells. Molecular assistants called chaperones help proteins exploit their inbuilt folding potential and reach the correct three-dimensional structure. Researchers at the Max Planck Institute of Biochemistry (MPIB) have demonstrated that actin, the most abundant protein in higher developed cells, does not have the inbuilt potential to fold and instead requires special assistance to fold into its active state. The chaperone TRiC uses a previously undescribed mechanism to perform actin folding. The study was recently published in the journal Cell.
Actin is the most abundant protein in highly developed cells and has diverse functions in processes like cell stabilization, cell division and muscle...
Scientists have discovered that the electrical resistance of a copper-oxide compound depends on the magnetic field in a very unusual way -- a finding that could help direct the search for materials that can perfectly conduct electricity at room temperatur
What happens when really powerful magnets--capable of producing magnetic fields nearly two million times stronger than Earth's--are applied to materials that...
08.08.2018 | Event News
27.07.2018 | Event News
25.07.2018 | Event News
16.08.2018 | Life Sciences
16.08.2018 | Earth Sciences
16.08.2018 | Life Sciences