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

Permanent Magnetic Governor

Neodymium Magnetic Coupling Manufacturer China Rare Earth Magnet Limited

Based on permanent magnetic couplings , permanent magnet governors are added with regulating mechanism, which can regulate speed and save energy.

Structure and Composition 
Governors change the effective part between permanent magnetic rotators and inductive rotator by regulating cylinder magnetic rotators, in which way can change torques that are transferred by the two rotators. This can realize repeatable, adjustable and controllable exported torques and rotational speed.

Magnetic governors are mainly composed by neodymium magnet rotators, inductive rotators and regular mechanism.

Features 
1. With 30%-90% speed regulation range and 10-50% electricity saving rate, permanent magnetic governors can realize high efficiency and energy conservation.
2. With simple structures, they are simple and realizable and need no external power source.
3. They start softly, reduce surge current and prolong service life of the equipments.
4. The permanent magnetic governors vibrate in isolation and have no mechanical links.
5. They can be installed simply and can tolerate big error of centralization.
6. They are applicable for various kinds of harsh environments, including fluctuating grid voltage, serious harmonic wave and dust.
7. Service life of transmission system can be lengthened, which reduce maintenance cost.
8. Green and environmental-friendly, they will not be disturbed by harmonic waves and EMI; they will not produce pollution.
9. Magnetic governors have long service and can be used for 30 years.

High Reliability
1. The permanent magnetic governors bring down starting current of motors and reduce impact of thermal load and grid, which not only can prolong motors’ service life and effectively decrease destructive tension of transmission systems, but eliminate vibration of conveyors. In this way, they guarantee safe and reliable operation of equipments and reduce time and cost of maintenance.
2. Because choice of motors is based on motion condition rather than starting condition, permanent magnetic governors can reduce rate and sizes of the motors and unnecessary equipment investment and electrical cost.
3. Magnetic governors can prevent rate and torques of conveyers from exceeding safe limit.
4. Starting factor of magnetic governors is 1, so the strength of adhesive tape can be reduce 30%.

China Rare Earth Magnet Limited
Tags: Permanent Magnet

Big N52 Neodymium Ring Magnets D100xd40x12mm

Big Permanent Magnet Manufacturer China Rare Earth Magnet Limited 

Looking for N52 Big Ring Magnets: 
We are company in Turkey. We need 20-50 units of magnets (roll type) wrote as follow:
Inner diameter: 40 mm
Outer diameter: 100 mm
Length: 12 mm
Permanent magnet: neodymium iron boron N52
Can you give me price offer this magnets in the mentioned i want?

NdFeB Magnet Manufacturer China Rare Earth Magnet Limited: 
We can customize the magnets for you. Please find our quotation as follows.
Material: Sintered Neodymium Magnets
Size: D100xd40x12mm (Ring type)
Grade: N52
Coating: NiCuNi
Magnetized or Not: Magnetized
Magnetization Direction: Through Thickness 12mm
Unit Price Ex-works Shenzhen USD***/pc

Looking for Big Neodymium Permanent Magnet :
We need change the magnet amount. Can you give me a price for 200 units?
By the way, the products how to get our hands? And what will be transport cost and the others cost?

Neodymium Ring Magnets Manufacturer China Rare Earth Magnet Limited:
Attached is our updated quotation for 200pcs.

Magnet Order & Shipping:
I have questions as follow:
the products how to get our hands? And what will be transport cost (by the sea and airway)?
How much time will be in our hands by the sea?
How will we pay?

China Rare Earth Magnet Limited Can Arrange Sea Transportation from China to Istanbul, Turkey: 
The net weight of 200 units is about 120KGS.
The gross weight including packing is more heavier.
Shipping by sea will be suitable for such heavy and strong permanent magnets.

The sea freight cost to Istanbul seaport is US$*** (customs clearance, duties & taxes are not included)
Please kindly be noted the goods are delivered to the destination port only.
You have to deal with the Customs clearance and pick up the goods.
The transportation time by sea is about 30 days.
We are looking forward to make business with you.

China Rare Earth Magnet Limited
Tags: Neodymium Ring Magnets, Permanent Magnet, Big Magnets

Magnetic Materials 20150409

Permanent Magnet Manufacturer China Rare Earth Magnet Limited 

Magnetic materials are a kind of functional materials that are ancient and widely used. People had known and made use of magnetism, as early as 3000 years before. For example, in ancient China, people used natural magnets as compasses.

Basic Information
Modern magnetic materials have been widely used in people’s life. Permanent magnets can be used as motors, iron cores of transformers, magnetic optical disks and floppy disks of storages. Magnetic materials are closely related to information, automation, national defense and national economy.
In general, magnetic materials refer to materials composed of iron, cobalt, nickel and other alloys that can directly or indirectly produce magnetism.

Introduction 
Experiments show that any materials can more or less be magnetized under outer magnetic field. The only difference is magnetization degree. According to features show in outer magnetic filed, materials can be classified into four kinds including paramagnetic materials, diamagnetic materials, ferromagnetic materials and anti-magnetic materials.

According to Molecular Current Hypothesis, materials manifest generally similar features in magnetic field, but features of materials have large differences under outer magnetic filed, which reflects limitations of Molecular Current Hypothesis. In fact, micro structures of various materials are different, which leads to variance between magnetism of materials.

Paramagnetic materials and antimagnetic materials are called weakly magnetic materials and ferromagnetic materials called strong permanent magnet materials .
Usually, magnetic materials refer to strong magnetic materials.
Based on difficulties of demagnetization, magnetic materials can be divided in soft magnetic materials and hard magnetic materials.

Materials that are easily demagnetized are called soft magnetic materials. On the contrary, materials are called hard magnetic materials.
Generally speaking, soft magnetic materials have low residual magnetism and the hard ones have high residual materials.

Application 
Magnetic materials are widely used in production, life and national defense. For example, there are various permanent magnet motors and transformers in electrical power technology; magnetic assembly and electronic microwave tubes in electric technology; filters and sensitizers in communication technology; magnetic mines, magnetic cannons in national defense; various kinds of household appliances.
In addition, magnetic materials are widely applied to mining detection, ocean detection, information, energy, and biology and space technology.

China Rare Earth Magnet Limited
Tags: Permanent Magnet, Magnetic Materials

N52 Neodymium Block Magnets 20150323

N52 Permanent Magnets Manufacturer China Rare Earth Magnet Limited

Looking forN52 12x5x2mm Neodymium Block Magnets: 
Can you supply the following quantity on an ongoing basis to Australia inclusive freight?
Material: Sintered Neodymium Magnet
Grade: N52
Shape & Size: Block 12x5x2mm
Magnetization Direction: Through 2mm
Coating: NiCuNi
Quantity: 10000pcs

N52 Magnet Manufacturer China Rare Earth Magnet Limited: 
Please find the quotation in attachment. The price excludes any duties & taxes on your side.

Looking forN52 12x5x2mm Neodymium Permanent Magnets:
May we ask the price for 20000pcs with freight to Australia?
You have quoted express post, how long does that take to Australia and how much is normal airmail please?
How do we pay once we make a decision?

Block Permanent Magnets Manufacturer China Rare Earth Magnet Limited: 
I attached the quotation with express to Australia.
We'll send the neodymium magnets via DHL, Fedex, UPS or TNT express. (Air)
It'll take around 3~5 working days to reach you.
Airmail is not safe for magnets delivery.
Either the airmail company won't accept the shipment.
If you are ready to purchase, we'll issue pro-forma invoice (with our bank details) soon by return.
You can make transfer to our bank account after confirming everything.

Magnet Order: 
Thank you for your help, we will be ready to order in a couple of months.

NdFeB Magnet Manufacturer China Rare Earth Magnet Limited:
You are most welcome.
The raw material costs of NdFeB magnets is keeping raising in recent periods. Our price validity is 3-5 days only.
If it's convenient for you, we suggest you place the order as soon as possible.
Please kindly consider it, thanks.

Magnet Samples:
Would you be able to post a couple of the magnets to us so we can see the quality please?

NdFeB Magnet Manufacturer China Rare Earth Magnet Limited:
Presently we have no stock samples of your magnets but for similar sizes 12x6.2x3mm.
If they are Okay for your test, we'd like to offer 5-10pcs freely.
Express freight collected on your side.
How do you think?
Waiting for your reply, thanks.

Magnet Samples:
No thanks don’t bother, can you send us a photo of the magnetic instead, we want to view the quality please?
What is the gauss of the N52 12x5x2mm?
Can we pay by Escrow or PayPal?

N52 Permanent Magnet Manufacturer China Rare Earth Magnet Limited: 
Please find the photos of similar block magnets as enclosed.

Surface gauss is subject the actual measurement on finished products. We produce magnets as customers' requested size and the performance of their appointed grade.
N52, 12x5x2mm magnet is expected to be around 3000Gs, this value is we estimated for your reference only.
Yes, we can accept payment from Paypal.
But Paypal is only suit for small amount transfer. The handle charges will be expensive for big amount.
If you order 20000pcs, we prefer to T/T to our bank account.

Small Permanent Magnet Order: 
We think we will go with a small order initially so as to establish a good relationship.
How much for 1000, 2000, 3000 N52 respectively plus freight please?
Can you provide prices for each amount above please?
Good afternoon. Please refer to the prices of 1000, 2000 and 3000pcs

China Rare Earth Magnet Limited
Tags: Permanent Magnet, Neodymium Block Magnet, N52 Magnet

Permanent Magnetic Lifter 20150318

Permanent Magnet Manufacturer China Rare Earth Magnet Limited 

Classified into manual and automatic types, permanent magnetic lifters made of neodymium magnet materials have smaller sizes, lighter weight, stronger attraction, special magnetic circuits and residual magnetism at almost zero. With high safe factor, the maximum pull-out force is as 2.8-4 times as rated lifting power. There is a safe button attached to the handle switch of manual magnetic lifters, which can be operated by one hand. Automatic permanent magnetic lifters do need to flip the handles manually but depend on attraction of zoom-control of electric hoists’ lifting hook. Using no electricity, they can safely lift up round steels and steel plates, which are widely applied to lifting and installation of steels, machinery components and various molds. Also, they can be used in shipbuilding, engineering machinery and automobiles, which improve working condition of load and unload and enhance working efficiency.

Features
1. Small structures, compact shapes and easy operation
2. High-performance permanent magnetic materials , never demagnetized
3. Needing no electricity or other power to support working
4. Advanced and scientific magnetic circuit designs, strong attraction, residual magnetism almost at zero, safe and reliable
5. High safety factor, the maximum pull-out force is as 3.5 times as rated lifting power.

Applicable range
Permanent magnetic lifters are applicable to transport steel plates, iron blocks and cylinders, such as machinery components, press dies and diversified steel materials. These permanent magnetic lifters are lifting equipments without electricity supply. With developed structures, the quality can reach advanced level of similar products in the world. Magnetic lifters are widely applied to machinery, molding manufacturing industry and transportation.

Advantages 
1. Permanent magnetic lifters adopt computers to simulate magnetic circuit designs with reasonable distribution of magnetic field and deep magnetic permeability.
2. Structures of magnetic lifters are simpler than that of iron separator and they need no electricity supply and cooling system.
3. They can save energy and have low failure rate.
4. They are easy to operate, safe and reliable.

Structure
Strong magnetic system of permanent magnetic lifters is made of high-performance of neodymium permanent magnetic materials. There are rings on the top of the lifters and V-shaped groove at the bottom for attracting cylinder objects. Neodymium permanent magnets are magnetic source, which has no power supply, strong attraction and low residual magnetism.

Working theory
Permanent magnetic lifters makes use of Faraday’s principle of electromagnetic induction, in which neodymium can produce strong attraction. Through flipping handles, the lifters can be turned on or off. They can work without power supply, which are safe and high-efficient new-type magnetic lifters.

Magnet Manufacturer - China Rare Earth Magnet Limited
March 18, 2015