SmCo Magnets 20150530

Custom SmCo18 & SmCo5 Permanent Magnets According to Drawings 

SmCo Magnets : 
Please find the attached drawing and specification details for magnet item, please offer your best price at the earliest. Note: Special parameter to qualify is to meet the 10 PPM/C for the attached specification.

Magnet Manufacturer China Rare Earth Magnet Limited: 
Would you mind telling us what will the bulk order quantity be in the future?
We can quote you our price for bulk order for your reference.

Custom Magnets: 
Price is not the criteria for this requirement. It should meet the reversible temperature of 10 PPM/C along with other parameters as mentioned in the specification and drawing.
Please provide the following test report if any for similar SmCo permanent magnet and later you can provide actual test report along with the shipment.
BH Curve
Reversible temperature on which criteria it is meeting 10 PPM
Temperature test reports

SmCo Magnet Manufacturer China Rare Earth Magnet Limited: 
Our technician team has studied your drawing carefully.
Are the dimensions in your drawing in inches or in mm?
And please specify the material and grade of the magnet you need.

Magnet Dimensions & Material: 
Please see below clarifications:
Dimensions are in millimeters
Grade is: SmCo Recoma 18 and Material is SmCo

Permanent Magnet Manufacturer China Rare Earth Magnet Limited:
Please check the following quotation:
Material: SmCo18
Size: As per your drawing
Ex-works Shenzhen USD***/pc

SmCo5 Block Magnets: 
Please review the attached Magnet specification with drawing and offer your best price with lead time.
Grade: SMCo5 Recoma 18

China Rare Earth Magnet Limited
Tags: Permanent Magnet China, SmCo Magnets

Permanent Magnetic Stirrer

China Rare Earth Magnet Limited Manufactures Permanent Magnets for Stirrer 

Introduction 
With wider and wider applications of aluminum alloy, some manufacturing industries, especially automobile and household appliance industries, which require high quality, propose higher demand of quality and production techniques of aluminum alloy. As is known to all, the most important part to guarantee product quality is how to stir aluminum melt efficiently in finery. Therefore, mechanical stirring, manual stirring and electro-magnetic stirring emerge as required. Furnace magnetic stirring technology was come up in 1930s, but for a long period, development of this product was only a concept without any action. Due to many defects of electro-magnetic stirring, such as great investment, huge sizes and large power consumption, promotion and application of magnetic stirring technology in metal smelting industry. Mechanical stirring and fluid pressure stirring gradually step down from the stage of history, because of directly contact with high-temperature aluminum melt, short service life and halfway stirring. Takahashi, a famous magnetic technology Professor proposed permanent magnetic stirring, which triggered revolution of stirring techniques in global aluminum industry. With more and more mature actual application technology, magnetic stirrers have become essential equipments of aluminum enterprises as well as brought considerable economic benefits. With constant upgrade of magnetic technology, more cost-effective are gradually promoted, therefore magnetic stirrer will become the equipments that attract most attention.

Working Theory 
Permanent magnetic stirrers for aluminum melt use alternating magnetic field produced by motion of AMAG permanent magnets and stir metal liquid. A magnetic stirrer is like a magnetic filed with large air gap. The inductor equals to a stator in a motor while aluminum liquid equals to a rotator. Interaction between magnetic field and metal liquid in the molten bath produces magnetic force, which drive metal liquid to move directionally and stir the metal liquid. There, noncontact stirring of permanent magnet stirrer will not pollute aluminum industy.

Features 
During stirring, melt is in dynamic state, which is beneficial to escape of nonmetallic inclusion and improve purity of the melt.
1. Directional flow of magnetic stirring is good to gather oxidizing slag on surface of the melt.
2. Permanent magnetic stirrers have long service life. Treated with high-temperature and anti-aging process, permanent magnets can be used for over a decade.
3. With simple structure and strong reliability, magnetic stirrers have low energy consumption and produce no pollution.

China Rare Earth Magnet Limited
Tags: Permanent Magnet

New Cost-effective Permanent Magnetic Materials Lower Cost

NdFeB Permanent Magnet Manufacturer China Rare Earth Magnet Limited

It is reported by Electric Car Era that it is true that there is no other productive force more important than science and technology. Recently, researchers from Ames Laboratory of United States Department of Energy develop a new type of magnetic materials, which can be applied to motors of electric vehicles and wind turbines. The new materials can take place of dysprosium that is expensive, of which magnetic performance is more excellent and cost is cheaper.

The new type permanent magnet materials are made of NdFeB composed by neodymium, iron and boron and cerium and cobalt. Comparing with traditional dysprosium produced by sintering, costs of cerium and cobalt are much lower, but their magnetic performance is as remarkable as that of neodymium magnet.

It is understood that NdFeB magnets which are added with cerium and cobalt still manifests nice magnetic property under high temperature. Also, its intrinsic coercive force can reach T≥ 435K, which approximately equals to 180 Celsius degree.

Arjun Pathak from Ames Laboratory and Mahmud Khan from the University of Miami conducted a series of experiments and found that under high temperature coercive force, referring to ability resisting to demagnetization, of magnetic material with cerium in it are superior to magnetic material containing dysprosium. In addition, the price is 20%-40% cheaper than that of the latter.

Before researchers have tried to use cerium in rare earth permanent magnet materials, but the experiments were all failed. Researcher now indicates it is because Curie temperature, which is also called Curie point, has been lower. But later the research team found out that magnetic materials will not lose magnetism with cobalt and cerium replacing dysprosium.

So far, dysprosium needed by manufacturing industry far exceeds the resource that are developed and recycled. In order to reduce dependence on dysprosium, searching substitute materials is the critical point. Cerium and cobalt will be more applied with lower cost and richer resource.

China Rare Earth Magnet Limited
Tags: Permanent Magnet

Permanent Magnet Generator for Automotive

Magnet Manufacturer China Rare Earth Magnet Limited 

Introduction 
Automotive generators are necessities of car assembly and main power supplies of car electric systems, which is an important and indispensable part of automotives. During normal work, an automotive generator powers all electric equipments (except starters), charges accumulators and replenish electric energy consumed by accumulators. Automotive generators, with high technology and high difficulties, are essential products for cars’ fast and reliable starts and normal operation, which is a significant symbol of cars.

Application
Automotive permanent magnet AC generators employ the newest international magnetically inductive materials----neodymium magnet as magnetic fields. Comparing with winding excitation generators, they don’t have claw poles and magnetic yoke casted by black metals; don’t have excitation coils would with enameled wires; don’t have electric blushes and collecting rings. They can meet high standards and requirements of modern cars under various circumstances, which have high efficiency and reliability, without carbon blushes. Without interference on on-boarded electrical appliances, they reduce charging and discharging frequency and lengthen service life of storage batteries. Under the circumstances of no storage batteries or batteries without electricity, cars can start running as well with high power rate. Due to special designs, they are widely recognized and used by urban public transportation system. Automotive permanent magnet generators are successfully used in diversified kinds of gasoline engines and diesel engines of cars, which are more applicable for urban buses, mining machinery and municipal road construction machines.

Composition 
Automotive permanent magnet generators are mainly composed of fan covers, regulators, rear covers, stators permanent rotators, front covers, bearings and belt pulleys.

Characteristics 
1. Automotive permanent magnet generators don’t need accumulators to supply power, because their stators are permanent magnets that need no excitation magnet electric current. They can generate electricity by rotating starters, which save energy. Their output power is as twice as that of excitation magnetic generators in the same sizes.
2. The generators have excellent power supply performance in low speed and low small voltage regulation factors.
3. They have strong environmental suitability. Without excitation magnet windings and carbon ring structures, they can work under harsh conditions.

China Rare Earth Magnet Limited
Tags: Permanent Magnet

Technological Breakthrough of Rare Earth Permanent Magnetic Synchronous Motors

Neodymium Permanent Magnet Manufacturer China Rare Earth Magnet Limited 

Recently, the 26th China Refrigeration Exhibition has been held in Shanghai New International Exhibition Center. In this exhibition, Gree Electric Appliance Inc, the top air-conditioner brand, promoted numerous refrigeration air-conditioners, which stunned the audience. Among those products, permanent magnetic frequency heat pump centrifuge is the most impressive and amazing one to experts. Based on technology of PM synchronous frequency centrifuge, it is designed and manufactured for working condition of heat pumps. This technology represents as developmental direction of central air-conditioners.

Research of synchronous motors has been conducted for a long time. In order to realize energy conversion, motors are in need of direct current magnetic fields, which can be produced by permanent magnet materials.

As is known to all, air-conditioning systems of large public buildings are high energy consuming with great potential of energy conservation. Large public buildings increase by 3000 to 4000 square meters every year in our country. Therefore, energy conservation of construction attracts much attention. In recent years, many manufacturers have conducted active researches around cold water chillers, made big progress and improved performance of chillers to different extent. Also, permanent magnetic synchronous frequent centrifugal machines highlight its energy conservation, reliability and adaptability, which are superior when employed in large office buildings, hospitals, schools and shopping malls. When temperature reaches a certain degree, power capability of PM synchronous motors will become smaller, which can save energy and circulate in compress refrigeration.

Not only are permanent magnetic synchronous motors used in filed of air conditioners, but they are applied to rail transit systems. CSR Zhuzhou Electric Locomotive Co., marketed PM synchronous driving systems and traction systems. Later, permanent magnetic synchronous motors are successfully employed in electric vehicles, high-speed rail vehicles, subways and low floor vehicles. Due o small sizes, light weight, permanent magnetic synchronous have absolute advantages in power density, which are widely applied in filed of electrical vehicles, robots, air conditioners, wind power, magnetic separators and consuming electrics.

Neodymium permanent magnets are the best choice for PM synchronous motors. With high energy product, higher residual magnetism and intrinsic coercive force, neodymium magnets become main stream of a new generation of new permanent magnetic materials with high performance, which has become the best choice for magnetic steel of permanent synchronous motors in downstream applications. Besides iron in magnets, neodymium, dysprosium and terbium are added as well.

China Rare Earth Magnet Limited
Tags: Permanent Magnet