Hot neodymium rare earth industrial surplus sale magnet ring
Basic Info
Model No.: Hot neodymium rare earth industrial surplus sale magnet ring
Product Description
Hot neodymium rare earth industrial surplus sale Magnet ring Product Description Specifications: NdFeB magnet in different grades:N35-N52,35M-52M,35H-52H Sizes:various,To design customizedcoating and shapes,welcome inqury Product: Neodymium powder metallurgy technology on manufacturing, will contain a certain proportion of raw materials such as: dysprosium, neodymium, iron, cobalt, niobium, praseodymium, aluminum, iron boron by medium frequency induction melting furnace smelting alloy ingot, and then broken into 3 ~ 5 microns powder, and forming technology in the field, the forming of the green compact sintering in vacuum sintering furnace and tempering time, thus obtained a certain magnetism of permanent magnet blank. Blank after grinding, drilling, slicing machine working procedure etc, then through surface treatment had the ndfeb products according to user's requirements. The process flow as shown in the figure below: 
Surface treatment: Sintered ndfeb permanent magnetic material is a kind of strong chemical activity of powder metallurgy materials, its characteristics of hard and brittle, easy to be oxidation corrosion. Based on the characteristics, current take the most effective way is to surface protective layer. But ndfeb sintered permanent magnet surface deterioration due to exists in the grinding layer and density is not completely equal of empty hole, oxidation, the surface treatment before must take the necessary and appropriate electroplating process, as shown below:chamfering→Oil removal process →pickling→Ultrasonic cleaning→electroplating→aging→Coating inspection Surface treatment projects:
Performance of the directory: 
Product: 
Other shapes: 
Packaging & Shipping Packing: As the magnets have strong attraction and we will use the spacer to apart the magnets each other in case people will be hurt when take it out. Then, they will be packed in a white box of pieces each, several boxes to a carton. +By Air: If the goods will be shipped by air, all the magnetic should be degaussed and we will use Iron sheet to shield. +By Sea: If the goods are will be shipped by sea, we will place a pallet on the bottom of cartons. 
Shipping: Express (TNT, DHL, FedEx, UPS, etc), Air, Ocean.
a: The weight is under 40Kgs, we recommend to send them in shielding boxes to you by Express.
b: The weight is between 40Kgs-100Kgs, it can be sent by Express or Air.
c: The weight is over 100Kgs, we recommend to send them by Ocean.
Why choose us? Why choose us? 1. Professional factory, 5 years gold supplier and Trade Assurance supplier in Alibaba. 2. More than 10 years experiences for magnet and export, we can supply technical support and develop projects with customers together. 3. High quality products, we have advanced equipment and good quality system to ensure the products quality. 4. Competitive prices and quickly delivery. 5. Good service. Usually we will reply customer within 24 hours. 6. Various payment way. 
Any questions,plese chontact: 
FAQ 1:How long will you give me the reply? we will reply you in 48 hours. 2:How about the quality of the magnets? We have the certification of ISO, SGS, ROHS. 3:How is the price? As we believe the quality is the most important, we will provide the high quality magnet with reasonable price. 4:Could I get samples? Yes, we have materials in stock to help you to get the samples as soon as we can. 5:How long will you deliver sample and bulk order? If we have materials in our stock, we can send them within 3 days. If we don’t have material in stock, production time for sample is 5-10 days, 15-25 days for bulk order. 6. How to pay you? T/T, Western Union, L/C, ESCROW. 
Contact us if you need more details on Industrial Surplus Sale Magnet. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Hot Neodymium Rare Earth Magnet、Magnet Ring. If these products fail to match your need, please contact us and we would like to provide relevant information.
Surface treatment: Sintered ndfeb permanent magnetic material is a kind of strong chemical activity of powder metallurgy materials, its characteristics of hard and brittle, easy to be oxidation corrosion. Based on the characteristics, current take the most effective way is to surface protective layer. But ndfeb sintered permanent magnet surface deterioration due to exists in the grinding layer and density is not completely equal of empty hole, oxidation, the surface treatment before must take the necessary and appropriate electroplating process, as shown below:chamfering→Oil removal process →pickling→Ultrasonic cleaning→electroplating→aging→Coating inspection Surface treatment projects: Surface treatment | Electric galvanized |
Nickel plating
|
Coating epoxy
| Other epoxy
|
| Appearance of the color
| Colorful or blue and white
| Shiny or matte
| Black, red etc.
| Black, red etc.
|
| The thickness of the coating (μm) | 5~13 | 15~25 | 40~60 | 55~85 |
| Applicable specifications
| Slice, blocks, arc, Ring, column, etc
| Slice, arc etc. Small and medium-sized specifications
| Slice, arc etc. large and medium-sized specifications
| Slice, arc etc. medium-sized specifications |
The economic costs | The minimum
| higher
| high
| The highest
|
| Range of application
| Electroacoustic, motor, Communication, magnetic drive
| Motor, acoustic, Instrument etc.
| Magnetic separation, nuclear magnetic Resonance etc.
| Motor, magnetic separation, Instruments etc.
|
| PCT test 120℃2atm100%RH | 100h | 48h | 100h | |
| Salt spray test 5%NaCl 35℃ | 24h | 24~48h | 200h | 200h |
| Binding force test 250℃×1hcooling
| OK | OK | OK | OK |
| Hot and humid test *80℃90%RH | 500h | 300h | 1000h | |
Note: to play * mark as reference | ||||
Product: 
Other shapes: 
Packaging & Shipping Packing: As the magnets have strong attraction and we will use the spacer to apart the magnets each other in case people will be hurt when take it out. Then, they will be packed in a white box of pieces each, several boxes to a carton. +By Air: If the goods will be shipped by air, all the magnetic should be degaussed and we will use Iron sheet to shield. +By Sea: If the goods are will be shipped by sea, we will place a pallet on the bottom of cartons. 
Shipping: Express (TNT, DHL, FedEx, UPS, etc), Air, Ocean.a: The weight is under 40Kgs, we recommend to send them in shielding boxes to you by Express.
b: The weight is between 40Kgs-100Kgs, it can be sent by Express or Air.
c: The weight is over 100Kgs, we recommend to send them by Ocean.
Why choose us? Why choose us? 1. Professional factory, 5 years gold supplier and Trade Assurance supplier in Alibaba. 2. More than 10 years experiences for magnet and export, we can supply technical support and develop projects with customers together. 3. High quality products, we have advanced equipment and good quality system to ensure the products quality. 4. Competitive prices and quickly delivery. 5. Good service. Usually we will reply customer within 24 hours. 6. Various payment way. 
Any questions,plese chontact: 
FAQ 1:How long will you give me the reply? we will reply you in 48 hours. 2:How about the quality of the magnets? We have the certification of ISO, SGS, ROHS. 3:How is the price? As we believe the quality is the most important, we will provide the high quality magnet with reasonable price. 4:Could I get samples? Yes, we have materials in stock to help you to get the samples as soon as we can. 5:How long will you deliver sample and bulk order? If we have materials in our stock, we can send them within 3 days. If we don’t have material in stock, production time for sample is 5-10 days, 15-25 days for bulk order. 6. How to pay you? T/T, Western Union, L/C, ESCROW. 
Contact us if you need more details on Industrial Surplus Sale Magnet. We are ready to answer your questions on packaging, logistics, certification or any other aspects about Hot Neodymium Rare Earth Magnet、Magnet Ring. If these products fail to match your need, please contact us and we would like to provide relevant information. Product Categories : Neodymium Magnet > Ring Shape Magnet
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