powerful north- south direction countersunk magnet

north- south direction Countersunk Magnet 1/  round countersunk magnet  2/  excellent performance 3/  Magnet For Door Holder, door catcher, speaker   Product Description north- south direction countersunk magnet the Sintered Ndfeb Magnets  is the important industrail product to promote technological and  social progress and is mainly composed of  Neodymium, Iron ,boron and other  microelements (Al, Ga, Mo,Co). It is known as " King of magnet".   A. specification 1.material : sintered  NdFeN magnets 2.grade: N35-N52, N38M-N50M, N35H-N48H, N33SH-N44SH, N30UH-N40UH, N30EH-N35EH,               N28AH-N35AH 3.shape: ring, block ,arc.disc and as your requirement 4.size: customized 5.magnetization direction: thickness, axial, radial 6.surfaceing coating : Zn, Ni. double Ni. Ni+Cuz+Ni ,epoxy and so on   B. Advantage a. Chemical Composition: Nd2Fe14B: Neodymium Magnets are hard, brittle and easily corrode; b. Moderate Temperature Stability: Neodymium magnets lose -0.09~-0.13%of Br/°C. Their working    stability is under 80°C for low Hcj Neodymium magnets and above 220°C for high Hcj Neodymium    magnets; c. Excellet Strength Value: The highest(BH)max reaches up to 51MGO.   C.Application memo,toy,lab , sensors, speakers, brushless motor, DC motor, Step motor, wind turbine/wind generator, magntic hooks, magnetic filter, cup magnet, Automobiles, magnetic coupling, magnetic chuch, Permanent Magnetic lift, and so on.    D. the  physical properties

TEM	PROPERTY
Density	7.45g/cm3
Reversible Temp.Coeff	-0.11%/ oC
Curie Temperature	310~340oC
Hardness	600Hv
Resistivity	144 cm
Compressibility	9.8x10 -12m2/N
Tensile Strength	8.0kg/mm
Flexure Strength	25kg/mm
Specific Heat	0.12kCal(kg.oC

Packaging & Shipping  north- south direction countersunk magnet's packing & delivery + delivery : 7--- 15 working day + packing :  Plastic bag -> Inner box -> Master carton: 29cm x 23cm x 14cm Plywood case (1) air package (2) sea package surface treatment The corrosion resiatance of Ndfeb is considered ad its drawback ,in order to protect the corrosion ,  it is effective to coatted on  its surface , commonly surface trestment of magnet detail ad followed

Metallic :

white zinc , colur zinc , nickle, nickle + nickle , nickle + tin, nickle + copper + nickle , epoxy , passivation

characterisitics of surface treatment : magnet produce manufacturing north- south direction countersunk magnet a. the raw material are burdebed according to Ndfeb . b. the burdeded material are melted at a high temperature to form an alloy ( or stip casting ) in    vacuum induction furnace . c.the particles are placed in a magnetic field and pressed into any desired shape . d.the products are heat treated at a temperature of 1000 degress or higher in a sintering furnace.   and then aging the magnets to adjust the properties. e.the magnets are tested their magnetic properties . f. the manets are machined to the desired size and shape including surface treatment . g. visual inspection at last.     Company Information Sunny Fore Magnet  we are factory for north- south direction countersunk magnet , - Various Dimension & shaped : (up to client's demend) -Tolerance: +/-0.05mm - Coating: Ni, NiCuNi, Zn, Au, Ag, epoxy - Quality is pass RoHS(2002/95/EC)  & EN71/3, REACH - Delivery day is about 7-15 days. Magnet Packing workshop magnet making machine quality first : magnet testing  company certification sunny fore magnet co.,ltd FAQ FAQ :  about  north- south direction countersunk magnet !!    1. [ where is sunny fore magnet co.,ltd ?]     [ Helen reply :  we are the factory on Jiangmen city, Guangdong province , China . which is not     far from  Guangzhou . it noly take  you an hour form Guangzhou Sourth station to  our factory .]   2. [ what is your main product ]      [ Helen reply : our main product is sintered Ndfeb Magnet , bonded ndfeb magnet , Rubber Magnet,     Ferrite Magnet  and   more  the product has beed widely use ]   3.[ how do you control product 's qualtity  ? ]    [ Helen reply : with advanced testing equipment , we have a stonger R&D engineers team ready to    service for you ,.our company is approved by the ISO9001:2008 and ISO14001:2004 standard .]   4.[ if would like to make order, what info I tell you and how ]   [ Helen reply : please tell us the detail included size , grade , surface coating ,quantity by  email ,   alibaba trade manager or skype helen liang ]            

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