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MR-X is a mixture of magnetizable carbonyl iron particles and a carrier fluid (MRF) or carrier powder (MRP). The iron particles, which are only a few micrometers in size, form solid bridges along the magnetic field lines within milliseconds under the influence of a magnetic field. The stronger the applied field, the more pronounced the chain formation and the associated shear stress that can be transmitted through the medium. Here, the magnetorheological effect surpasses the purely hydraulic effect (viscosity in the case of MRF) or dominates over tribological effects (MRP). A key advantage of the magnetic chain formation is its reversibility, as broken chains can simply re-form.
If electrical charges flow in a conductor, a magnetic field is immediately generated. In MR technology, this effect is utilized by generating a magnetic field via a coil that is proportional to the electrical coil current. In addition, permanent magnets can also be used to realize corresponding chain formation or shear stresses in the currentless state (fail-safe functions or remanence).
The energized coil generates a magnetic field that flows through a working gap containing the MR-X medium.
Initially, the iron particles are in a homogeneous, disordered state in space. When a voltage is applied, the iron atoms form chains.
At point A, the current (I) is at its minimum || and at point E, it reaches its maximum
The properties of the MR-X medium change depending on the voltage level.
A major advantage is the control of the system via the current, as this can be easily controlled in fractions of a second via electronics and thus the characteristics of a mechanical system (e.g. damping force of a shock absorber) can be variably adapted.
More suitable for static or quasi-static applications where high dimensional stability and lower flowability is required:
Ideal for dynamic applications where fast and precise control of fluid movement is required:
Infenium international limited is a joint venture between ExxonMobil and Shell through the chemical devisions of both companies. It is headquartered in Abingdon, Englang, and has operating centres throughout the UK, the United States, Germany, France, Italy, China and Singapore.
The chemicals devision dates back to 1930.
A magnetic field is an invisible area around a magnet in which magnetic forces act. It can be imagined as invisible lines running from the north pole to the south pole of a magnet. These lines represent the effect of the magnetic force.
An electromagnet induces a magnetic field when an electric current flows through its winding. The strength of the magnetic field can be regulated by changing the current. Electromagnets are used in many devices, e.g. in motors, loudspeakers and door locks.
Permanent magnets naturally generate a permanent magnetic field without the need for energy. Examples of permanent magnets are refrigerator magnets or the magnets in compasses.
Remanence describes the ability of a material to “remember” its magnetization. Even after an external magnetic field is removed, a certain amount of magnetization remains in the material. This phenomenon is important for hard disks, for example, in order to store data.
By combining electric and permanen magnets, we have developed arobust, mechanics-free safety system that works reliably even in the event of a power failure.
We leverage the properties of remanent materials and combine them with electromagnets, allowing us to store magnetic fields within the material. Energy is only required to alter the system. The MR device can be demagnetized, have its polarity reversed, and be magnetized to saturation. This enables us to maintain forces or torques without the need for continuous power.
Custom prototype development knows no limits. Whether in the automotive industry, electronics manufacturing, healthcare or leisure, sports – we develop innovative solutions for almost every industry. From our various MR actuators to specially developed test benches and integration into existing systems – we realize your individual requirements.
We are dedicated to turning unique ideas into innovative solutions. In custom prototype development, we prioritize collaboration, precision, and cutting-edge technology to deliver excellence at every stage. From concept to production, we work hand in hand with our clients to exceed expectations and build lasting partnerships.
The journey begins with an initial meeting, where we take the time to listen closely to your ideas and requirements. This is our opportunity to understand your vision in detail while presenting our expertise, offerings, and the framework within which we operate. Together, we align on possibilities and set the stage for a productive partnership.
Once we have a clear understanding of your expectations, our team engages in an in-depth internal discussion. Every aspect of your requirements is carefully analyzed, and our specialists craft a bespoke solution that aligns with your goals. We then reach out to present our proposed concept to you, ensuring it reflects your vision and expectations.
If the proposed solution resonates with you, we transition to the prototyping phase. This step is marked by meticulous attention to detail as we bring your concept to life. Rigorous testing and iterative optimization ensure that the prototype meets our high standards. By the end of this phase, we will have a ready-to-present prototype that captures the essence of your vision.
The prototype is then unveiled during a dedicated follow-up meeting. This is a crucial opportunity for you to review the prototype, provide feedback, and share any additional wishes or adjustments. Your input is invaluable as we refine the solution to align perfectly with your expectations.
After incorporating your feedback, we finalize the prototype and conduct extensive testing to ensure its flawless performance. This phase involves close collaboration with you to identify and eliminate any potential issues. Together, we work towards achieving a robust and reliable product that meets all expectations.
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Tel: +43 5552 31231
Fax: +43 5552 63220
office@inventus.at
