Viona Magnetics

Many factors must be considered when choosing a permanent magnet material for your application. We can make detailed recommendations for your particular application based on our years of experience and technical expertise. Factors including operating temperature, demagnetizing effects, environmental characteristics and available space all need to be considered. At VIONA, we can recommend materials, and we can assist in design.

Magnetic assemblies involve magnets along with other components, such as steel housing or even non-magnetic components, assembled together using mostly adhesive technology. The selection of all components and adhesive is very important, and it depends greatly on the application and environmental conditions. Viona Magnetics can assist you with this selection process. Apart from the components and adhesive involved, the other most important aspect is the assembly process. It can be very meticulous and time consuming, and special care is taken so that all assembly procedures are followed correctly. Most of the steps are irreversible so if anything goes wrong at a later stage; it may not be possible to correct it, thereby causing loss of material and resources. Most of the critical assemblies are performed in our clean room, which also prevents any sort of contamination. We are also equipped with doing post processes such as magnetizing after assembly, coating, field measurement, etc. When you come to us, we are your one stop source helping from designing to providing finished assemblies. We do procure all of the components ourselves, but are also willing to accept customer's proprietary material to perform assembly. Please call us for off the shelf assemblies or any customized application that you need help with. We will be glad to work with you on your requirement.

Magnetic Couplings consist of an outer and an inner drive. The two drives do not touch each other - the coupling works via the non-contact transfer of power, which means that the magnetic solution - in contrast to traditional solutions - does not experience any wear. The Magnetic Couplings is thus maintenance-free. Between the two rotating units, it is possible to place a can such that two different media can be kept separate. With the hermetic enclosure of the coupling in a stainless steel housing, corrosion is avoided and the coupling can operate directly as a wet runner in different liquids and aggressive environments. The outer drive is normally connected to the drive unit and the inner drive is, for example, connected to a pump. If a can is placed between the two contact-free rotating units, a standard air-cooled norm motor can, for example, be connected to a pump without the use of gaskets and seals. Magnetic Couplings are also called torque couplings because they can transfer a certain maximum mechanical torque through the air. If the torque exceeds this maximum value, the coupling will "slip", which means that the rotational speed between the two coupled units is no longer the same. This prevents wear and tear and the Magnetic Couplings provides a built-in safety feature that protects against damage. There are two main types of couplings. One type has a radial design - similar to an ordinary electric motor - while the other is axially oriented such that it can transfer forces through a surface.

• Maximum Energy Product (BH)max1.1
• Residual Induction Br2.3
• Curie Temp Tc450

• Material GradeLN10
• Equivalent MMPA ClassALNICO3
• mT600
• Densityg/cm3
• Curie Temperature Tc℃

Flexible sheet magnets, which are commonly used for refrigerator magnets, combine ceramic ferrite magnet powder with a flexible thermoplastic binder. The manufacturing process involves injection molding, which is well suited to high volume applications. The flexible nature of the material enables forming into intricate, tight-tolerance shapes. However, since the material is an alloy of ceramic ferrite material, the magnetic strength is weaker than a solid ceramic magnet. Still, the versatility of the flexible sheet enables its use in many applications. Flexible sheet is often magnetized in a multi-polar arrangement: N-S-N-S. The North and South poles are spaced close together, anywhere from 2 poles per inch to 60 poles per inch and up. This is useful in holding applications because a higher pole density results in higher holding forces. For a sensing application, a high pole density allows tighter resolution. Flexible sheets come in various thicknesses and widths. Thicknesses vary between 0.020" and 0.375". Widths vary from 0.187" up to 24". The material can be sold in strips up to 100 ft. long. Also, some come with an adhesive backing, which can simplify assembly if needed. The magnetic orientation is normally through the thickness. Our Products Permanent Magnets Alnico Magnets Ceramic Magnets NdFeB Magnets SmCo Magnet Flexible Magnets Magnet Assemblies Magnetic Couplings