Produse pentru magnet din (25)

AMT&C LLC produces a wide variety of magnetic blocks – basic components of the pipeline flaw detectors. Thanks to the stable quality and guaranteed high magnetic parameters of our magnetic assemblies we supply them for largest Russian companies producers of the diagnostics equipment for gas and oil pipelines.

Centrifugal pumps have well-known advantages such as uniform pumping without surges, the ability to create high pressures at low pump rate in multi-stage designs, long service life and others. However, operation of centrifugal pumps requires building positive pressure (pressure boosting) upstream of the inlet suction pipe for the following reasons: to fill the pump body with the pumped fluid in order to avoid a "dry start" to prevent cavitation during pump operation. Classic methods for creating pressure boosting before centrifugal pumps can be: installation of a tank from which the fluid is pumped, several meters above the axis of the pump shaft and placing the pump in the draw-off sump; inclusion of an additional vacuum pump into the process, which is capable of building the desired pressure boosting of several metres. HOW IS THE PROBLEM OF CREATING A PRESSURE BOOSTING IN MODERN SELF-PRIMING CENTRIFUGAL PUMPS SOLVED? Villina company offers you Villina self-priming GNGC series Purpose:transit of corrosive, toxic, explosive and flammable fluids at insufficient suction pressure Pump rate ranges:0.8 to 450 m3/h Head ranges:3 to 132 m Self-priming height (depth):up to 6 metres Seal type:magnetic coupling according to API 685 or tandem mechanical seal according to API 682 Climatic version:for moderate and for moderate and cold climate Temperature of the pumped fluid:for GNGC-S, GNGC-S-M up to plus 350°С, for NCG-S up to plus 450°С Shaft speed:1,450 or 2,900 rpm Structural design:ОН-2 single-stage back pull-out pump according to API 610 or a single block

Now pins will not be scattered throughout the workshop! This incredibly comfortable bracelet with a magnet is an indispensable item in your work. The sleek white strap curves smoothly around your hand and does not chafe your wrist. It will become even more convenient to holds the pins and draping more officiant. The bracelet itself is made of flexible material, the magnet is wrapped with a factory film which should be removed before use. This stylish accessory will perfectly fit into the creative and atmospheric process of creating clothes!

AMT&C LLC offers a full range of services in calculations, design and manufacturing of permanent magnet assemblies with required magnetic field configuration. Many years experience in complicated magnetic systems production combined with application of modern most effective magnetic materials permit us to reach high parameters: - to produce, with permanent magnet systems, the magnetic flux density up to 3 Tesla and more; - to reach high homogeneity up to 105; - to create magnetic systems with complicated field pattern; - to produce adjustable magnetic field generators on the basis of permanent magnets. The magnetic field changing rate in such systems can reach 10 Tesla per second.

AMT&C LLC for many years is engaged in design and manufacture of the measuring equipment intended for research of magnetic properties of materials. In the field of the magnetocaloric effect (MCE) these products continue own scientific interests of the AMT&C company employees, recognized experts in this realm of physics. Manufacture of the scientific equipment is based on the following core technologies, backed by patents and numerous know-how: - a wide experience in design and manufacture of complicated magnetic systems, including the adjustable magnetic field generators, controlled by a computer; - use of the most advanced products and ideas in the field of measuring technics; - the magnetic field source and data acquisition system are controlled by means of the specialized software that allows to create setups operating in automatic mode; as a rule, the LabView based software is used. Since 2009 AMT&C LLC produces the measuring equipment under trade mark "MagEq".

The magnetic coupling drives for stirring devices are designed to be installed immediately into the tank and provide the necessary stirring of the product. The drive is electrically driven and consists of two half-couplings (driven and driven magnetic half-couplings), bearing assembly and the stirring device itself. Stirring devices (mixers) are of several types: paddle, anchor, propeller, U-type, etc. We develop and supply turn-key solutions for our customers. Magnetic coupling drives for stirring devices are custom-tailored for each specific customer's application in accordance with the sketches provided or according to the parameters specified in the questionnaire form.

The magnetic system of this field source is also built on the principle of nested cylindrical Halbach-structures. An important feature is the presence of two motors, controlled independently, so it is possible to manage the change not only the magnitude but also the direction of the magnetic field. Because the device was designed for operation together with an optical microscope, the vertical size of the system near the working region is reduced to 90 mm. Stepper motors, that turn the two magnetic subsystems, are located on the sides of the casing Working bore diameter:36 mm Size of the homogenous field area:Ø20 х 20 mm Maximal field:1.05 T System mass:40 kg

For testing cardio-stimulators and other medical devices, a set of the magnetic field sources was designed having a magnetic flux density in the working area from 1 to 300 mT. Values of the magnetic field in the working area:1, 10, 50, 100, 200, 300 mT Magnetic system material:NdFeB The inter-pole gap:25 mm Dimensions of the working:Area ø 150 x 20 mm The field inhomogeneity in the working area:~ 1 % Overall system dimensions:180×260×260 mm

Induction magnetometer allows to measure magnetic field isotherms of magnetization (magnetization versus magnetic field (M(H) dependences) in the fields up to 2 T and in the temperature interval from 80 to 370 K. Magnetization is measured by induction method. Specification: - temperature interval — from 80 to 370 К, - magnetic field interval — from 0,02 to 2 Т, - relative measurement accuracy of magnetization - 2 %, - maximal sample dimensions - Ø1.5 × 3.7 mm. Magnetometer (its measuring part) consists of the measuring insert, electronic module and control and data acquisition program and can be used together with the magnetocaloric measuring setup (which includes permanent magnet adjustable magnetic field source, liquid nitrogen cryostat, temperature controller, 2 digital voltmeters, control computer with corresponding interface and control boards).

This type of highly intensive magnetic field generator is based on the dipole Halbach structure principle and offers the possibility to vary the field value, including field polarity reversal, from –Bmax up to +Bmax. The magnetic induction vector is directed transverse to a cylinder-shaped working bore. The field direction is constant; the field uniformity is ±0.5%. The system is PC-controlled, so it is possible to assign various time profiles of the magnetic field. It is important, that it is possible, using these permanent magnet assemblies, to reach rather high field modulation rates – up to 10 T/sec. AMT&C LLC offers the production of the adjustable field systems under customer specifications. In case the high field uniformity and high field changing rate are not needed we can offer various types of simple adjustable systems. For example, the shown device has symmetrically moving poles so the inductance in the central point can be changed in limits from 0.1 to 1 T. Overall dimensions:396 × 324 × 466 mm Working bore diameter:36 mm Size of the homogenous field area:Ø20 х 20 mm Maximal field (Bmax):1.85 T Maximal field changing rate::6 T/sec

The torso is made of highly elastic material. It can be compressed and immediately returns to its original shape that helps to work effectively with different fabric. The torso is fully pinnable with needles and pins. The cotton cover has water and oilresistant impregnation. Removable jersey cover is resistant to high temperature and humidity. You can steam and iron clothes directly on the dress form. The dress form has detachable magnet shoulder segments. Henry mannequin torso; Shoulder segments; Sturdy metal stand "Milan" with removable wheels and adjustable height; Retainer of rotation Rotation lock for fixing the dummy during work; Breathable dustproof storage pouch; Magnetstencil of a female figure for sketching Durable:2 years of warranty for the polymer filling the torso Size:L

AMT&C LLC developed several types of axial magnetic field systems of permanent magnets that allow to reach highly homogenous field in a wide ranges of magnetic flux density and working area size. Examples of magnetic systems, given in the table, represent typical axial field systems that were designed and manufactured according to customized technical requirements. At your request the magnetic field source will be optimized to get the required parameters. Magnetic system material:NdFeB Field direction:axial Flux density:0.95 Tesla; 1.25 Tesla Uniformity:better than 10^-3 Working volume:Ø20x20 mm Field strength adjustment range:±3% Outer Diameter:235 mm; 300 mm Length:220 mm; 240 mm Bore diameter:42 mm; 50 mm

The heat capacity measuring insert is intended for measurement of the heat capacity temperature dependencies in constant magnetic field. In this insert the adiabatic method is used. The inner sample holder is equipped with the resistive heaters, resistive temperature sensors and Hall sensor. The heat capacity measurement insert characteristics: - relative measurement accuracy of heat capacity: 3 %; - sample dimensions: a rectangular bar 4×5×2.5 mm; - temperature interval – from 80 to 370 K; - magnetic field interval – from 0.02 to 2 T.

Centrifugal pumps have well-known advantages such as uniform pumping without surges, the ability to create high pressures at low pump rate in multi-stage designs, long service life and others. Advantages: the fluid can be taken in at a point lower than the axis of the inlet suction pipe without using a pre-installed vacuum pump. - Purpose: transit of corrosive, toxic, explosive and flammable fluids at insufficient suction pressure; - Pump rate ranges: 0.8 to 450 m3/h; - Head ranges: 3 to 132 m; - Self-priming height (depth): up to 6 metres; - Seal type: magnetic coupling according to API 685 or tandem mechanical seal according to API 682; - Climatic version: for moderate and for moderate and cold climate; - Temperature of the pumped fluid: for GNGC-S, GNGC-S-M up to plus 350°С, for NCG-S up to plus 450°С; - Shaft speed: 1,450 or 2,900 rpm; - Structural design: ОН-2 single-stage back pull-out pump according to API 610 or a single block.

High-tech research is, perhaps, that particular market where the scientific potential and expertise of AMT&C’s research and engineering personnel can most fully be realized and appreciated. We offer the calculation, design and manufacture services in creating high-strength high-uniformity rare earth magnetic field sources/systems for BEAM CONTROL applications (beam focusing, charged particles acceleration and deflection). The development of permanent magnetic field sources for use with SPM, STM, AFM systems, as well as for MRAM and MRI/NMR applications, to the customer’s specific requirements is another promising area for advantageous collaboration.

The compact system of permanent magnets NdFeB, designed according to the principle of the dipole Halbachstructure, allows to get, inside the bore, rather homogeneous magnetic field with the magnetic flux density up to 23 Tesla. The system can be an efficient alternative to electromagnetic sources of the magnetic field, and can be used in scientific and applied research requiring magnetic fields of high intensity. Geometrical dimensions and magnetic flux density in Halbachtype systems can vary widely, the attached data and photos are typical examples. AMT&C LLC offers the manufacturing of steady magnetic field systems according the customer technical specifications. To improve the temperature stability the system can be assembled of SmCo magnets. External diameter:165 mm; 250 mm Bore diameter:40 mm; 20 mm Length:125 mm; 880 mm Weight:13 kg; ~ 330 kg Field direction:transverse to the bore axis Flux density in the working volume:1.2 Tesla; 2.6 Tesla Uniform field (±0.5%) area:Ø 40 x 20 mm; 12 mm

This type of magnetic systems is developed for NMR applications, but can also be used for other tasks requiring the highly homogeneous magnetic field in the significant working volume. The main magnetic system, built on the principle of dipole Halbach-structure, is complemented by the additional corrective system of magnetic elements, that allows to bring the homogeneity of the magnetic field to the level of 10-4 in the desired working volume. Overall dimensions:Ø190×400 mm; Ø300×500 mm Mass:~ 20 kg; ~ 150 kg Operating region size:Ø50×100 mm; Ø100×100 mm Magnetic flux density in operating region:0.05 T; 0.16 T

Magnetic couplings are used as transmission mechanisms in modern pumps, which makes it possible to obtain a qualitatively new 100% tight device without making essential changes to the design of the electric drive and the wet end of the pump. At present Villina offers GNVC, GNGC and GNVC-P series vertical, horizontal and semi-submersible centrifugal pumps with magnetic couplings, designed for pumping explosive and flammable, toxic and corrosive fluids (petroleum products, alkalis, acids, alcohols, etc). PURPOSE Magnetic couplings for Villina centrifugal pumps allow for transmission of torque from the electric motor to the pump shaft using magnetic fields generated by permanent magnets instead of mechanical engagement devices. At the same time, there is no need to withdraw the shaft from the pump wet end to the drive device, therefore the wet end can be made in the form of a completely sealed system free of leaks which are typical for pumps with mechanical shaft seals.

The Villina GNGC series horizontal canned centrifugal pumps with magnetic couplings are widely used in oil and gas companies of Russia and its neighbouring countries for transit of explosive and flammable, toxic and corrosive fluids. The horizontal arrangement allows the use of a GNGC as a replacement for technically obsolete and physically worn pumps without significantly changing the geometry of the location and pump lines group assembly systems. 100% tightness, structural design in accordance with API 610, 685 (ISO 13709) standards and explosion-proof design of GNGC pumps are approved by design institutes and Rostekhnadzor for use in projects for modernization, reconstruction or construction of new facilities. GNGC horizontal pumps with magnetic couplings provide for axial position of the suction pipe and radial position of the delivery pipe. The motor and pump body are mounted on supports (OH 2 according to API 610), the drive shaft of the motor Purpose:transit of corrosive, toxic, explosive and flammable fluids Pump rate ranges:1.8 to 1080 m3/h Head ranges:3.2 to 250 m Seal type:a magnetic coupling with a sealing sleeve made of Hastelloy alloy (standard version) ensures 100% Climatic version:for moderate and for moderate and cold climate Shaft speed:1,450 or 2,900 rpm Structural design:ОН-2 single-stage back pull-out pump according to API 610

LLC "AMT&C" offers automatic measuring system (AMS) for measurements of the magnetocaloric effect and other magnetic parameters. AMS includes: - Halbach-type magnetic field source with changing magnetic field based on permanent NdFeB magnets, - liquid nitrogen cryostat, - the set of measuring inserts, - data acquisition and measurements control system guided by a control computer. AMS has the following working parameters: - variable magnetic field strength - from -1.85 to +1.85 T, - variable frequency of the magnetic field change from 0.1 to 1.8 Hz (magnetic field change rate from 0.05 to 6 T/s), - dimensions of the magnetic field area with heterogeneity no more than 1 % - diameter 20 mm, length 20 mm, - working temperature region – 80 ÷ 365 К, - automatic and manual measuring modes. The basic option of AMS is the magnetocaloric effect measurement. - sample dimensions (min-max) (1-2)×(2-5)×(8-10) mm, - measurement accuracy of magnetocaloric effect: 0.1 K.

ADVANTAGES - GNVC-P vertical semi-submersible pumps are developed and manufactured according to individual parameters of the Customer and in compliance with normative documents. - Time of manufacture: 90 days. - Warranty period: 24 months. - Chemical pumps are capable of pumping liquids with viscosity up to 35 cSt, and density up to 2,000 kg/m3. PERFORMANCE SPECIFICATIONS - Purpose: transit of corrosive, toxic, explosive and flammable fluids; - Pump rate ranges: 1 to 55 m3/h; - Head ranges: 5 to 250 m; - Seal type: a magnetic coupling according to API 685 with a sealing sleeve made of Hastelloy alloy (standard version) ensures 100% tightness; - Temperature of the pumped fluid: up to plus 250°С; - Shaft speed: 2,900 rpm; - Structural design: type VS4 according to API 610, vertical type, fixed installation on the container neck on the base plate; - Submergence: 1 to 6 metres, with a length increment of 10 cm for the choice of a specific immersed part length of the pump.

The main parts of magnetic couplings used in GNVC series vertical pumps are the driving (external) and the driven (internal) half couplings, and a sealing sleeve between the half couplings. The exceptional reliability of Villina magnetic couplings is the result of a high-tech design: the enclosed capsular design of the half couplings (enclosed body) secures the magnetic systems from environmental effects; the use of special adhesives allows for fast fixture of domestically produced permanent magnets based on rare-earth elements on the half coupling ferrules; double protection against overheating and demagnetization is implemented using the temperature sensor of the sealing sleeve, which is triggered when the maximum acceptable operating temperature is exceeded by 20 to 50°C, with the use of magnets with Curie point of more than 100°C higher than the maximum acceptable operating fluid temperature; the sealing sleeve made of high-strength Hastelloy alloys Purpose:transit of corrosive, toxic, explosive and flammable fluids Pump rate ranges:1 to 200 m3/h Head ranges:5 to 250 m Seal type:magnetic coupling according to API 685 with a sealing sleeve made of Hastelloy alloy Climatic version:for moderate and for moderate and cold climate Temperature of the pumped fluid:up to plus 350°С Shaft speed:2,900 rpm Structural design:vertical type with the motor mounted on a flanged connection

This magnetic system is specially designed for non-destructive testing of pumped vacuum devices, that required the creation of a uniform magnetic field not only in the center of the operating bore, but in the toroidal region of large size. The system is assembled on the basis of NdFeB permanent magnets. Field direction:axial Field uniformity in a specified toroidal area:up to ±2% Magnetic flux density (for existing modifications):from 0.1 to 0.4 T Bore diameter:120 mm and more

Vertical semi-submersible pumps are designed to solve the problem of pumping liquid out of a tank when a part of the pump is within the pumped medium. Pump units are used with the engine speed up to 3,000 rpm. Therefore, the temperature conditions for semi-submersible pumping units are up to 250 degrees. Centrifugal semi-submersible pumps are widely used both in petroleum refining (petroleum and drainage pumps) and the chemical industry, and in the food industry. They are used for transit of various liquids and mixtures including explosive and flammable fluids (oil and gas products, etc.). Semi-submersible pumps are in between surface and submersible units and combine all their advantages, nevertheless, a semi-submersible pump is not designed to carry out specialized tasks for which these two types of units were created. Semi-submersible pumps consist of an electric motor, a working section and immersed sections. The engine is placed on a base plate

This type of magnetic field sources also is based on the principle of dipole Halbach-structure, but the special design permits to get an optical access to the sample under investigation along several directions with a rather wide aperture. It is possible to supply the system with a built-in field measuring system, connected to a PC. The field adjustment can be controlled from a PC or with a built-in controller. The geometrical and field parameters described above can be change under customer specification. The operational bore:Ø 42 mm The field adjustment interval:from -0.7 up to 0.7 T Field homogeneity within working region:within ~ 1 % The invariable geometry of operational space during the field adjustment:Yes The possibility for optical observations in directions along and perpendicular to the field vector:Yes