It is generally assumed – and typical applications confirm – that metal bellows couplings reliably work over the entire service life of an installation, if the coupling is correctly designed. In the future, this can no longer be taken for granted as applications are becoming more and more dynamic. Such applications require you to consider additional criteria when selecting and designing a coupling. Read here about the most important factors which have to be taken into account.
A coupling is an element of a drive line that primarily serves the purpose of transmitting power from one shaft to another, thereby providing for the connection of the driving and driven machine. At the same time, shaft misalignments, e.g. caused by assembly inaccuracies, should be compensated by the coupling while generating minimum reaction forces.
The distinction is made between angular, radial and axial shaft misalignments which may also occur simultaneously. Depending on the coupling type you choose, the dynamic behavior of the entire drive line, and consequently of the machine and its production process, can often be influenced by adjusting the torsional stiffness of the coupling.
What started almost a century ago as buffer between railway cars has now become a universally applicable damping element for almost all industry sectors – also as a protective element against potential damages to buildings and industrial facilities caused by earthquakes.
The 9th International STESSA Conference on the Behaviour of Steel Structures in Seismic Areas took place from February 17 to 19 in Christchurch (New Zealand). This conference, which is triennially held, is organized by the Steel Construction New Zealand Incorporated (SCNZ) in cooperation with the University of Auckland, the University of Canterbury and the University of Naples. Like the previous STESSA Conferences, the University of Canterbury was selected to host this event.
This is part 3 of our series on surface treatments of components. Due to the great number of different chemical processes, we have split them up and explored these processes in the previous article:
- Chromate conversion coating
- Black oxide.
This blog article covers the remaining chemical processes commonly applied for the treatment of component surfaces.
In our first blog article we presented the most common mechanical processes for the treatment of component surfaces. In this second part, we address the most frequently used methods of chemical surface treatments. The decision as to which of the following treatments should be applied is predominantly influenced by design points of view, technical aspects and the intended appearance of the product.
The surface finish of components used in the field of mechanical engineering as well as of other products is not only determined from a design point of view, but is mainly defined by the technical aspects. From the onset, the specification of the requirements regarding the condition of component surfaces, e.g. of a shaft coupling, often has far-reaching consequences on the product development process, the resulting costs and, eventually, on the succes of the final product.
New year – new luck! This also means: a new attempt at keeping the good resolutions we keep on setting for ourselves at the beginning of a new year. We admit: we usually revert quickly to old habits. But, aren’t we annoyed with ourselves? So, why don’t you put into action one very important resolution commonly with us? We’ll show you how you can make your workday healthier with only a few tricks – this will not only help you work more effective and motivated, but in the long run, your health will also benefit from this.
The Christmas season – the time of rest and reflection? Well… instead of love, harmony, warmth and a sense of well-being, many of us actually associate the pre-Christmas period with stress, deadlines and overtime. A pile of projects heaped up on our desk which, ideally, should be completed before the holidays. In our private life, Christmas parties, visits to or from relatives and preparations for Christmas dinner make schedules even busier.
But, let’s be honest: the greatest cause of stress comes from our desperate search for suitable presents. After all, we would like to get something "special" for everyone.
If this sentence makes you nervous – don’t panic! We are going to show you how you can still please your loved ones with only four days before Christmas, in spite of your long to-do list.
The term ATEX is derived from the French denomination "Atmosphères Explosibles" (explosive atmospheres): The ATEX Standard comprises the Equipment Directive 2014/34/EU as well as the Workplace Directive 1999/92/EC. In a previous article about the ATEX Directive we put more emphasis on general issues and theory. In this article we use the example of a flexible claw coupling to explain in more detail how this standard is implemented in practice.