Alnico Major Magnets

Alnico Major Magnets

• 550° maximum operating temperature
• Alnico 3 magnet material and mild steel
• Good corrosion resistance

Details of the Alnico Major Magnets

The Alnico Major Magnet is a precision magnetically tuned magnetic field assembly. It offers 2000 Gauss (0.2Tesla) in the air gap between the two poles at ambient temperature and pressure.

Alnico_major_magnets

The Alnico Major Magnet comprises a large and sturdy C-shaped alnico horseshoe shape with high quality mild steel (ferromagnetic) poles. The assembly is fully magnetised to over 2000 Gauss then deliberated magnetically “knocked back” (weakened) to give the final 2000 Gauss (which is the same as 2kG, 200mT or 0.2T) field reading in the air gap between the steel poles.

Alnico Magnetic Material with Excellent Thermal Characteristics

The Alnico Major Magnet can be used at temperatures up to +550 degrees C (+1022 Fahrenheit) with excellent stability of magnetic output as the magnet heats up (following the excellent thermal characteristics of Alnico magnetic material). The pole gap (air gap) is 27.3mm.

Typical Applications of Alnico Major Magnets

Typical applications include Mass Spectrometry, Medical Experiments, sensor designs, generator experiments, school and college projects, etc. Such applications require a magnetic field strength of known value in an air gap.

Alternative to Alnico Magnets

For the maximum magnetic strength see our range of Neodymium (rare earth) magnets.

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Hallbach Array – Science & Technology

Hallbach Array – Science & Technology

A Chinese Research establishment contacted us to design a dipole Halbach Array to produce a 1 Tesla field in the centre of the Halbach Array.

We have 3D FEA software (Infolytica Magnet) to assist with the magnetic design on such things as Halbach Arrays. In this case we had to design the unit to give a 1 Tesla field in the centre and to demonstrate the magnetic field profile within the central cylinder air gap (flux map).

Hallbach Array

We then used our in-house magnet design and manufacturing facilities to produce the Halbach Array at low cost while maintaining the high quality required for the application.

We can design Halbach Arrays of varying lengths, diameters, field strengths, magnetic patterns, etc.

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Magnetic Pump Coupling – OEM Pump Industry

Magnetic Pump Coupling – OEM Pump Industry – Magnetic Technology Drives Down Costs and Improves Performance

We design magnetic pump couplings (canister designs and pancake designs) to meet customer requirements for pull out torque at customer specified application temperatures.

Magnetic Pump Coupling

Bespoke Magnetic Coupling Design
We were approached by a China company requiring a bespoke magnetic coupling design. The customer knew the torque rating they required and had a shaft diameter but they wished to keep magnet costs to a minimum and they wished to retain design control of the assembly for their bespoke application. Corrosion resistance was also desirable. We custom designed the magnetic design using stock item magnets (to allow continuity of supply at short notice while offering low magnet cost) and shared the design with the customer to develop the rest of their assembly to their own specifications.

We also supply magnetic assemblies and sub-assemblies to customer drawings for other pump coupling applications. We can design couplings with torque ratings from 1 Nm up to and beyond several hundred Nm for temperatures from below ambient to upwards of 300 degrees C.

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Ultra-Precise Magnetic Balancing

Ultra-Precise Magnetic Balancing

Ultra-Precise Magnetic Balancing Improves Performance, Magnetic Rotor with Mechanical and Magnetic Balancing – Generator Magnet – Power Generation Industry

We were approached by a company to supply a magnetic rotor assembly for a generator application. The high speed rotor would be used for multi-phase voltage generation. The power electronics would be simple to keep costs down. The customer wanted same magnitude voltage output in each phase.

Ultra-Precise Magnetic Balancing

We provide the ability to produce rotor assemblies in-house. Such rotors can be sleeved (Inconel, glass fibre, etc) to keep the magnets mechanically on the rotor. The rotors can also be mechanically balanced to meet customer anti-vibration requirements (to minimise bearing wear for example). We also offer a little-known service called magnetic balancing.

Magnetic Balancing Service
Magnetic balancing is where we Helmholtz coil test the magnets to determine each magnet’s magnetic performance. We can then place the magnets on the rotor in such a way that each phase of coil winding will “see” the same levels of magnetic performance. The magnet placement is such that we have magnetically tuned / magnetically balanced the performance in each phase of coil winding. The end result is that the generated voltages in each phase are more evenly balanced with nearer to equal voltage magnitudes allowing for cheaper and simpler power electronics to be used.

Such magnetic and mechanical balancing on rotors by HSMAG can be used in generators, motors and even on other electrical machines, actuators and drives.

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HSMAG Magnets & Magnetic Assemblies for Permanent Magnet Motors

HSMAG Magnets & Magnetic Assemblies for Permanent Magnet Motors

Your product – whether a car, industrial equipment or home appliance – starts with the motor. And building the best motor starts with HSMAG. Our team of experts work with you from project inception to completion. We regularly perform 2D and 3D magnetic modeling to determine your need, provide rapid prototypes, manufacture magnets or magnetic assemblies in any quantity, perform extensive quality checks (even winning quality awards from major customers), and work diligently to meet your delivery date. In addition to offering domestically produced magnet and magnetic assemblies, HSMAG Magnet also offers an extensive supply chain of all magnetic materials, including Alnico, Ferrite, Rare Earth (SmCo and NdFeB).

Magnets & Magnetic Assemblies for Permanent Magnet Motors

Our engineering team can work with you to design custom magnets for your product.

We can both design & manufacture magnets for PM motors using an array of different magnetic materials that are best for your application, including Alnico, Ferrite, and Rare Earth (SmCo and NdFeB).

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Wet Drum Separators

Wet Drum Separators

Wet Drum Separators – For recovering magnetic / ferrosilicon in dense media plants and iron ores wet drum separators are primarily used. They remove contaminants from the product stream, increasing product purity and plant productivity. In the applications where the product purity is most essential the wet drum separators can use powerful rare earth magnets which can remove very fine and weak contaminants even from dense materials.

How it Works?

The liquid flows through a semicircular separating chamber beneath a stainless steel drum gather is a semicircular separating chamber through which the liquid flows. The cylinder consisting of permanent magnetic discs are positioned within the drum to which the magnetizable particles are attracted. By rotating the drum, the filter cake is lifted out of the slurry and the magnetic field.

Wet Drum Separators

Features

Wet drum magnets have high magnetic recovery and discharge.
The feed slurries recover the magnetics.
Available in single or multiple drum applications.
Recover magnetic solids in as clean a magnetic concentrate as possible .
Permanent magnet assembly eliminates coil burn-outs .
The magnet / pole elements are bolted to a mild steel shaft.
The drum is made from thick stainless steel for long service life.
Wet drum separators are available in different configuration like single drum, double drum and multiple drum. In double drum two separators are arranged back to back with a common feed back.

Applications

Glass industry
Chemical industry
Plastic industry
Mining industry
Food industry
Pharmaceuticals industry
Foundry industry

Buyers Advantage

Wet drum separator has following advantages for the buyers :

The separator provides minimum wear on the cylinder.
The materials are return to the feed point automatically.
It has the high magnetic solid discharge.
It can also handle heavy magnetic load.
Wet drum separator has wide industrial usage.

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Magnetic Therapy

Magnetic Therapy

Magnetic therapy is practiced world wide for treating various physical problems. Magnetic device when placed on or near the body to relieve pain and facilitate healing. The therapy works on the principle that placing magnets on any part of the body can cure chronic ailments that standard medicine finds difficult.

History

Magnetic Therapy Since ancient periods magnets were used for therapy. Ancient Chinese used magnets for treating various physical disorders. As per ancient Greek folklore lodestones natural magnetic rocks had therapeutic powers. Over the past decade the popularity of magnetic therapy is increasing. There are many peoples who are deriving the health benefits from the magnetic therapy. Due to the increasing popularity many products have been launched in the market . Doctors and researchers however are not convinced regarding medical benefits of the magnets therefore the well designed researches are necessary to convince the medical practitioner to include the magnets in their treatment system.

Magnetic Therapy

How Does It Work?

Human body is believed to posses the magnetism. The earth to has its own magnetic field. If the magnetic power of the body and the earth gets disturbed certain physical problems arise. When the magnetic products are applied on the body it penetrates the body and cover up the magnetic deficiency thereby giving good health.

Physical Benefits

It is believed that people can derive immense medical benefits from the magnetic therapy. The common problems alleviated by the the use of magnetic therapy are:

Arthritis
Achilles tendon
Tendonitis
Back bone problems
Muscular pains
Sciatica
Lumbar spondylitis
Inflammation
Weight reduction
Carpal tunnel syndrome
Tendonitis
Repetitive strain injury
Dupuytren’s
Depression
Spondylitis
Cervical
Headache
Depression

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HSMAG Bonded Magnets Cooperative Factory

HSMAG Bonded Magnets Cooperative Factory – BOCI Inc. is a factory highly specialized in manufacturing plastic magnetic materials and components, has over 15 years experiece.

Every year, more than 10 million autos are using of our products that covering with ordinary cars to luxury cars. Most products are used in automotive instrument, motor and sensors. Still, our products are also widely used for instrument motor, synchronous dynamo, direct current machine and precision motor etc.

HSMAG Bonded Magnets Cooperative Factory

We always strive to achieve to be the best magnetic enterprise by providing high quality magnet product .

We also pay attention to the harmony between human and nature in production activities, assuming social resposibility.

The cooperation between us normally begin with a drawing or a sample. Our professional working team will maximally understand the requirement of the clients, and would like to offer the recommendation and best performance solution.

Development History
· Established in 1995, specializing in sintering NdFeB.
· Injection molding NdFeB and ferrite were produced in 1998 .
· Plastic magent granules was produced in 2001.
· ISO9001：2000 Quality system certification was obtained in March 2003.
· Ningbo branch was founded in July 2004.
· ISO9001：2008 Quality system certification was obtained in May 2010.
· Plant was newly built in 2010, renamed as “Changchun BOCI Magnet Technology Co., Ltd.”
· ISO/TS 16949：2009 Quality system certification was obtained in June 2012.

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Plastic Magnets Characteristic

Plastic Magnets Characteristic

Plastic magnet is different from the traditional magnetic craft which made by mixing the magnetic particle with plastic medium, mixed and heated by the injection machine and then rip the mixture into the mould to get different shapes of production, this kind of process makes the plastic magnetic has some unique advantages:

·The precise magnet with complex shape can be made very easily.
·During the subsequent assembly and use the magnet is hard to crack.
·It can form in one piece with inlaid element easily.

Plastic Magnets Characteristic

Therefore the inject magnets are usually used for some peculiar requirements and the situation which other skills can not be very competent.

At the present time, the main kinds of magnetic particle used in the Plastic Magnet material: Ferrite, Neodymium-Iron-Boron, Samarium-Cobalt and SmFeN. The plastic magnet media include Nylon 6 Nylon12 and PPS clients can order their requirements of performance cost and use occasion to make decisions.

We can also base on the operating requirements to give our clients an optimal performance recommendation.

For the anisotropic magnetic powder, we orientate the magnetic field when during the injection process this can greatly enhance the magnetic property and improve the performance price . Such kind of technic has a high technical requirement to the mixture and mould so it can completely represent the highest technical merit in the plastic Magnet manufacturing engineering area.

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Bonded Injection Magnets Classification

Bonded Injection Magnets Classification, Material Classification

Ferrite Bonded Injection Magnets

Ferrite Plastic Magnet has the features of low magnetic proprty and lower cost.
·Anisotropy Ferrite

Magnetizing while the process of injection molding, it can greatly improve the product’s magnetic energy produce and could make (BH) reach to 1.60 MGOe–2.20 MGOe.
It is a high ratio of performance materials, mostly used as a motor rotor.

Characteristic:
· Because of the toughness of the resin, it is not easy to be chipped and cracked.
· Injection molding formation together with embedded parts such as a shaft is available, reducing assembly process.
· Easy to make a complex shape, with higher degree of design freedom.
· As cutting process is easy, it is convenient to make samples in design stage.

Magnetic Powder Maximum Energy Produce（MGOe） Br Thermal Coefficient Working Temperature(℃) Oxidation Price Ferrite 1.5-2.2 -0.19 120 Non Low NdFeB 3.0-8.0 -0.1 120 Slight Middle SmCo 5.0-8.0 -0.035 180 Non High SmFeN 8.0-16.0 -0.07 120 Slight High

Resin Water Absorption（%） Heat Deflection Temperature(℃) PA6 0.15 169 PA12 0.04 121 PPS 0.01 217

Bonded Injection Magnets Classification

NdFeB Plastic Magnet is a material with high cost performance. After mixed with different ratio of magnetic powder and resin, its magnetic energy produce (BH) could achieve 2.0—8.0MGOe and mostly used in precision motors and sensors field.

Characteristic:
· High precision, suitable for all kinds of precision components.
· High magnetic property can make the magnetic components to be lightweight and miniaturization.
· Easy to be magnetizing with Multiple poles
· Can be injection molding formation together with embedded parts such as a shaft, reducing assembly process.
· Easy to make a complex shape, has a very high design freedom.
· Material cost is higher, but has advantage in tiny magnets production.

SmCo Bonded Injection Magnets

SmCo Plastic Magnet is a material with small temperature coefficient and best magnetic properties in high temperature. Mostly used in thermostability motor or precision sensor and the working temperature can be reached to 150 C°–220 C°.
Characteristic
· Max. magnetic energy produce of anisotropy SmCo plastic magnet can be reached to 8.0MOe and the cost is relatively high.

SmFeN Bonded Injection Magnets
· A new type of bonded permanent magnet material.
· The maximum magnetic energy produce of anisotropy SmFeN plastic magnet can be reached to 16MGOe, however it is the most expensive material.

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