Developing wear control technology for severe slurry mineral handling conditions
A model for elastomer wear behavior in demanding condition was developed to create a deeper understanding of the polymers as wear resistant materials. The developed model can be utilized in the industry by doing better material choices in applications and by developing better rubber compounds.
Ramor 550 protection steel
During DEMAPP project SSAB Europe (Ruukki Metals) has developed Ramor® protection steel having excellent ballistic properties in combination with high hardness and strength.
Enhanced manufacturing characteristics and tailored service properties through laser hybrid welding
Laser-arc hybrid welding can be simply described as a fusion-welding process where both a laser beam and welding arc are focused simultaneously in the same weld pool. This hybrid technology has a number of advantages, but in this context the most important is the use of external filler material to modify the metallurgical composition of the resulting weld. The objectives of...
Multi-scale modeling links the microstructure to wear performance
The wear behavior of high strength steels and metal matrix composites was investigated by way of microstructure based multi-scale modeling. The multi-scale modeling and simulation approach enables to establish links between material microstructure and its properties, microstructure and wear performance, as well as to produce methods for understanding and quantifying the...
New wear test devices narrow the gap between research and practice
Experimental research plays a key role in solving wear problems. The following four novel wear test devices were developed in the DEMAPP programme: a dual pivoted laboratory jaw crusher, an impeller-tumbler impact-abrasion tester, a high-speed slurry pot tester, and a high velocity particle impactor (HVPI) for wear model and simulation validation. The test devices were...
Bi-metallic valves via hot isostatic pressing
In Finland special products and components with high performance offer competitive edge over mass production of lower cost countries. New manufacturing technologies are in key role in offering these high performance components. In the project HIP (hot isostatic pressing) manufacturing methods were developed to fabricate bi-metallic valve-bodies. The test results are...
A Finite Element Model for Simulating Spark Plasma Sintering Process
A finite element model for simulating the SPS process (temperature gradients, distribution of electric current) was developed to enhance process control and facilitate design of complex SPS geometries.
Fretting damage prediction for highly loaded machine components
Fretting fatigue, i.e. decreased fatigue performance due to the small oscillatory movement between contacting bodies, is often considered as the plague of modern industry. A novel modelling and experimental methods has been developed and successfully applied in diesel engines in order to optimize and increase safety margin to fretting damage.
Increased understanding of wear mechanism in paper machine
Wear of sliding machine elements increases friction, which means increase in energy consumption. New information on what governs wear mechanisms in wet high-velocity sliding has been produced.
Lower friction can reduce fuel consumption by 14 % in trucks and buses
In heavy duty vehicles, 33% of the fuel energy is used to overcome friction. By taking advantage of new technology for friction reduction in heavy duty vehicles, friction losses could be reduced by 14%. This would annually equal worldwide savings of 105 billion euros, 75 billion liters of diesel fuel, and a carbon dioxide emission reduction of 200 million tonnes.