Product Introduction And Advantages

The sintered NdFeB permanent magnet is made by powder metallurgy, and its chemical combination is Nd₂Fe₁₄B, which is currently the magnetic material with the highest magnetic performance.

The advantages are anti-demagnetization and high cost performance.

Product Brand

The performance of this product is 35H.

The N series grades we can make are: N35, N38, N40, N42, N45, N48, N50, N52, N54.

Magnetic Performance Distribution Map

Surface Treatment

Sintered NdFeB permanent magnet material is a powder metallurgical material with strong chemical activity, its characteristics are hard and brittle, and it is easy to be oxidized and corroded. Based on this feature, the most effective method currently adopted is to coat the surface. The usual methods are blue and white zinc plating, color zinc, nickel copper nickel, chemical nickel, epoxy resin, phosphating and so on.

We can also perform surface treatments such as silver plating, gold plating, Everlube, etc. according to your requirements.

Sintered NdFeB Magnet Thickness standard of coating and lntroduction
Nd-Fe-B substrate is easy to be corroded. In order to overcome this defect, the surface of Nd-Fe-B substrate is often coated with blue white zinc, color zinc, nickel copper nickel, electroless nickel, epoxy resin and phosphating.
Coating	Method	Thickness (μm)	Color	PCT (H)	SST (H)	Characteristic
Zn	Electroplating	4-15	Bright Blue	/	≥24H	Regular Protection
Zn	Electroplating	4-15	Multicolor	/	≥48H	Excellent spray resistance
NiCuNi	Electroplating	5-20	Bright/ Semibright	>48	≥48H	Excellent spray resistance
						Excellent humidity heat
Ni+NiCuNi	Electroplating	5-20	Bright/ Semibright	>48	≥96H	Excellent spray resistance
						Excellent humidity heat
Chemic Ni	Electroless plating	3-20	Bright/ Semibright	>72	≥96H	Excellent spray resistance
						Excellent humidity heat
Epoxy	Electrophoresis	15-30	Black/ grey	>24	≥72H	Excellent spray resistance
						Excellent humidity heat
						Excellent adhesion
Phosphated/ Passivation	Electroless plating	≤2μm	Black/ grey	/	≥4H	Temporary Protection
Note: 1. Pressure test conditions: 120℃ 100%RH*2.0ATM*48hrs Continuous High Voltage 2. Salt spray test conditions: 5%NACL,35℃ 48hrs Continuous spray 3. The time of salt spray test and PCT test for different products depends on the actual shape

Reliability Test

The reliability tests we usually do are:

Test name	Test conditions
Plating Thickness	The coating thickness was measured by X-ray thickness gauge
PCT test	No cracks, peeling, bulging, rust and other defects were found in the coating after 48 hours of testing at 120 ℃ / 100% RH / 2atm
Salt spray test	After continuous spraying for 48 hours at 35 C /5% NaCl solution, the coating is not blackened or rusted.
Aging test	Under 120 ℃ for 2 hours, the magnetic flux decay rate is less than or equal to 10%
Tension test	The shrinkage is less than 1 / 3 of the area in 3S

Remarks: The above test conditions are formulated for most products. If you have anything else you need to know, our engineers will provide you with appropriate suggestions.

Process Flow

Ingredients of raw materials-smelting-hydrogen breaking-powder making-magnetic field orientation and forming-sintering-testing of magnetic properties-machining-- Surface treatment-quality inspection-magnetization-packaging and delivery.

Magnetic Direction

We can perform thickness direction magnetization, axial multi-pole magnetization, radial magnetization, axial multi-stage magnetization, surface multi-stage magnetization, radiation magnetization, etc. Special customized magnetization methods are also available.

Note: The magnetized product should be kept away from floppy disks, magnetic cards, magnetic tapes, credit cards, electronic equipment, electronic dashboards, cardiac pacemakers and other medical devices or similar objects.

Packing

Packaging: Standard air or sea packaging, such as: cartons, pallets, wooden boxes. In the case of air transportation, we will shield the magnetic field before transportation.

Payment Methods

Port: Shanghai

Payment: Wire transfer

Delivery Date

Sample: usually 7-15 days

Mass production: 15-30 days

Respond to specific products according to specific products.

Transportation Method

Courier companies we cooperate with: TNT/DHL/UPS/FedEx, etc.

[Intimate service, worry-free after-sales]

Pre-sale:

Fully communicate with customers on customer drawings, specific requirements and applications, and after confirming the proofing, proceed to the production of [product specifications] and prepare for mass production.

On sale:

In the production process, for any problems related to the customer's product, communicate with the customer as soon as possible, and then proceed to the next step after getting the customer's approval. After 100% communication, 100% confirmation and 100% execution.

After sale:

For issues related to product quality, the two parties first communicate with each other and resolve them after confirmation.

Application Field

Brushless motors, linear motors, servo motors, power tools, oil pump motors, sensors, etc.

http://www.chinamagnetssupplier.com/