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  • circular oscillations
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  • circular oscillations
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  • harmonic oscillator... damped oscillations... free and driven oscillations
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  • harmonic oscillator... damped oscillations... free and driven oscillations
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  • Examples taken from the traffic sector, from the household and from industry, especially heavy industry, show that movements occuring in technological processes are generally connected with friction. Friction always causes losses of energy and often also results in wear. Losses of this kind amount to about 40 billion West German Marks per annum in the Federal Republic of Germany. The obejctive of the scientific discipline of tribology is to reduce such losses. Tribology is the science and technology of surfaces moving against one another which are in contact with and interacting with one another and the processes involved in these movements (DIN 50 323). The work of a tribology staff division is shown working on the practical case of a broken down pinion mechanism on a rolling mill. That serves as an introduction to an explanation of the "Tribology System" (basic and counter body, with and without precursor, environmental medium, strain collective, loss of energy, abrasion, capability of being influenced). The film shows how the tribosystem can be carefully developed towards better and longer operability by: geometric design (calculating friction bearings, testing rotating mechanical seal); selection of tools for basic and counter body (dredging shovel with layer of welding, CVD coating on slipping beds, laser hardening on cylinder liners; choice of lubricant (spectral analysis of lubricating substances, compatibility of plastics with lubricating oils, examination of lubricating grease, poorly combustible hydraulic fluids). The operability of a tribosystem applied over a longer period of time must be maintained by: maintaince (checking lubricating substances, analysis of oscillation frequency). Research and development is done in all areas of tribology. The Federal Department for Research and Technology assists by encouraging a number of research projects of which a few are mentioned. In order to reduce the large losses caused by friction, the knowledge already available on tribology must be passed on, particularly to small and middle-scale industrial enterprises, by means of technology transfer and innovation. The task of the Society for Tribology-Consulting is to be of help here. The Society and its work are introduced at the end of the film.
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