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Shanghai CJ Magnet Industry Co., Ltd.
Shanghai CJ Magnet Industry Co., Ltd. Manufacturer---NdFeB Magnet, Ferrite Magnet, Alnico Magnet, SmCo Magnet
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High Power Sintered Alnico Magnets With Groove Nickel Magnetic N48

Shanghai CJ Magnet Industry Co., Ltd.
Shanghai CJ Magnet Industry Co., Ltd.
City: Shanghai
Province/State: Shanghai
Country/Region: China
Tel: 86-21-52661981
Contact Person:
Mrs Amy

High Power Sintered Alnico Magnets With Groove Nickel Magnetic N48

Brand Name : CJ MAGNET
Model Number : CJ 332
Certification : ISO9001 ISO4001 ISO16949 SGS ROHS REACH
Place of Origin : Zhe Jiang , China
MOQ : 100/1000/10000pcs
Price : USD0.001-50/pc
Payment Terms : T/T
Supply Ability : 20Ton
Delivery Time : 7-15work days
Packaging Details : standard sea or air package
Brand : CJ MAG
Name : high performance Alnico magnet with custom shaped groove following the drawing
Shape : Alnico magnet
Our strong R&D team : has magnetic experts with more than 30 years experience
Our professional sales team : will offer you 24 hours online service
Our own factory : two factory, one in Anji near by Shanghai and Hangzhou, another in Ningbo.
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High Power Sintered Alnico Magnets With Groove Nickel Magnetic N48

About us
► Shanghai CJ Magnetic Industry aim to be the first-class supplier of magnetic material , magnetic applications and magnetic solutions. We are innovating our products with high technology , gaining market with good quality , creating brand with excellent performance . ► What the most important is that we continue to improve ourselves tp meat clients’ requirement .

Alnico magnets have the following features:

· High maximum temperature up to 550 degrees C. They are the most suitable magnets for high temperature applications

· Economical

· Very stable

· Good corrosion resistance

Alnico is the most suitable magnet material for complex custom shapes as it can be moulded. Once cast, however, it is so hard that it can only be machined by grinding.

1.Compact crystal, high intensity, good chemistry Stability, strong anti-corrosion.
2.Even elements, excellent and stable magnetic performance;
3.Excellent temperature stability (temp. coefficient of Br is the smallest among all of the other permanent magnets.)
4.Highest usage temperature reach 500ºC
5.Suitable for small volume and complex shape and magnet assemble for sintered Alnico.

Key Advantages

Sintered Alnico Magnets:

· Excellent temperature stability

· Strong corrosion resistance

· Fine grain

· Compact crystal.

· Excellent magnetic consistence and evenness.

· Suitable for small volume and complex shape magnets.

Cast Alnico Magnets:

· Excellent temperature stability

· Strong corrosion resistance

· Excellent capacity

· High density and magnetic properties

· Shorter production lead time

· Temperature factor of Br is the smallest among all the permanent magnets

· Cast Alnico magnets can be produced in relatively complex shapes

· Tooling for cast Alnico magnets is relatively low, since sand molds are generally used for the casting process.

Manufacturing Process

Alnico magnets are produced by casting or sintering processes. Anisotropic alnico magnets are oriented by heating above a critical temperature, and cooling in the presence of a magnetic field. Both isotropic and anisotropic alnico require proper heat treatment to develop optimum magnetic properties — without it alnico's coercivity is about 10 Oe, comparable to technical iron, which is a soft magnetic material. After the heat treatment alnico becomes a composite material, named "precipitation material"—it consists of iron and cobalt rich[9] precipitates in rich-NiAl matrix.

Alnico's anisotropy is oriented along the desired magnetic axis by applying an external magnetic field to it during the precipitate particle nucleation, which occurs when cooling from 900 °C (1,650 °F) to 800 °C (1,470 °F), near the Curie point. Without an external field there are local anisotropies of different orientations, due to spontaneous magnetization. The precipitate structure is a "barrier" against magnetization changes, as it prefers few magnetization states requiring much energy to get the material into any intermediate state. Also, a weak magnetic field shifts the magnetization of the matrix phase only, and is reversible.

Common Use

Alnico magnets are widely used in industrial and consumer applications where strong permanent magnets are needed; examples are electric motors, electric guitar pickups, microphones, sensors, loudspeakers, magnetron tubes, and cow magnets. In many applications they are being superseded by rare earth magnets, whose stronger fields (Br) and larger energy products (BHmax) allow smaller size magnets to be used for a given application.


why choose us

1 we have professional design produce and sales teams.

2 we have professional and advanced machines

3 our products are all in high quality

4 we have good after-service

5 all manufacture steps can be finished by our own.

When can i get the reply for my inquiry ?
Your inquiry would received our prompt and satisfactory reply within 4 hours during our working time .If you are very urgent to get the price, please call us so that we will regard your inquiry priority .
► About quotation ?
We will present out detailed competitive quotation in an excel form including information such as the packing and delivery time as well as reasonable terms and conditions to you .
► How about the inspection ?
♦ The goods will be inspected by our high - trained QC regardless to the quantity before shipment .
♦ Any problems during the inspection will be informed by us .
♦ Inspection by your side will be highly welcomed if possible and necessary .
♦ Prompt delivery are ensured . For any reason that we can not deliver the goods on time , you will be informed the reasons and reach the settling methods agreed by both of us .

Returns & Refunds Policy

1. Refunds are only available for defective products and you must give us specific reason about our defective products.

2. You have 7 days to contact us and 10 days to return item from the date it was received.

3. You can receive a full refund after I receive your returned item.

4. Returned item must have all original packaging and accessories and you will pay the return shipping fee.

Feedback & Communication

We are glad to hear good advises and suggestions from you .

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