Product name :Â Â Â Â Â Â Â Â Â Â Â Â Â permanent neodymium magnet (NdFe B)
Direction of magnetisation :Â Through the thickness or through diameter
Max working temp.:Â Â Â Â Â Â Â Â Under 80 Degree C
Specification: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 16x3.5x5mm
HS code: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 850511
Coating:Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Nickel
Density: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 7.5g/cm3
Tensile Strength:Â Â Â Â Â Â Â Â Â Â Â Â 8.0kg/mm2
Original: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â China
Mangets Application
Office Automation -   Personal computers, Copiers, printers
Electrical energy -     flywheels, wind power station
Science and research - ESR(electron spin resonance), magnetic levitation, photon generation
Medicine -            dental materials, imaging
Industry -             industrial robots, FA (factory automation), Recycling
Audio-visua products - televisions, DVD(digital videl disc), CD(compact disc), headphone stereo
                     Transportation - small motors, sensors, Automobiles, EV(electric vehicles), hybrid cars
Telecommunications -  mobile communication, PHS(personal handy-phone system)
Manufacturing Process
1.The raw materials are burdened according to Nd2Fe14b.
2.The burdened materials are melted at a high temperature to form an alloy ( or stip casting) in a vacuum induction furance.
3.The alloy (or strip casting) is pulverized into small particles that are several microns in size.
4.The particles are placed in a magnetic field and pressed into any desired shape.
5.The products are heat treated at a temperature of 1,000ºC higher in a sintering furnace. And then aging the magnets to adjust the properties.
6. The magnets are tested their magnetic properties.
7.The manets are machined to the desired size and shape including surface treatment.
8.Visual inspection at last.
Characteristics of Surface Treatment
| Performance | Zn | Double Ni | NiCuNi | Electroless Ni | Epoxy |
| Colour | White | Silver | Silver | Silver | Black |
| Thickness (M) | 8-15 | 15-20 | 15-30 | 10-20 | 10-30 |
| Pressure Cooker Test (120C,2atm,100% RH) | >15hr | >24hr | >48hr | >24hr | >24hr |
| Salt Spray Test     (5% NaCl,30ºC,1.2atm) | >24hr | >24hr | >48hr | >72hr | >100hr |
Material Detail
HS Code: Â Â Â Â Â Â Â 850511
Material: Â Â Â Â Â Â Â Neodymium Iron Boron, also call NdFeb
Advantage: Â Â Â Â Â Strong magnet power
Disadvantage: Â Â higher cost
Size: Â Â Â Â Â Â Â Â Â Â Â from 0.1mm to 200mm, depend on detail dimension
Shape: Â Â Â Â Â Â Â Â Â Round, Rectangle, Ring, arc, other special
Grade Choose: Â Â Â N33,N35,N38,N40,N42,N45,N48, N50,N52,M,H,SH,HU,EH,AH
Surface Coating:Â Nickel, Zinc, Copper, expoxy, PVC, etc
Quality Control: Â ISO2008.9001, QA team
Magnet Life: Â Â Â Â Permament under good condition
Physical Properties:
Temp.Coeff.of Br:              -0.09~-0.11%/°C
Density: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 7.5~7.6g/cm3
Vickers hardness:Â Â Â Â Â Â Â Â Â Â Â Â Â Â 600Hv
Tensile Strength: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 8.0kg/mm3
Specific Heat:                  0.12kCal/(kg, °C)
Youg's.Modulus: Â Â Â Â Â Â Â Â Â Â 1.6x1011N/m2
Poisson's.Ratio:Â Â Â Â Â Â Â Â Â 0.24
Curie Temperature:            310-340°C
Temp.Coeff.of Hc:          0.5~-0.60%/°C
Electrical Resistivity:             114 µ Ω . cm
Flexural Strength: Â Â Â Â Â Â Â Â Â Â Â Â Â Â 25kg/mm
Coeff.of Thermal Expansion: 4x10-6/°C
Thermal Conductivity:       7.7kcal(m.h.°C)
Rigidity: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 0.64N/m2
Compressibility: Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 9.8x10-12m2/N
Relative Recoil Permeability: Â Â Â Â 1.05
Packing & Shipment
1.Normal packing in Polybag + inner white box +brown master carton
2.Also packing in foam or wooden case as client's request.3.Shipment via Express, Air, Ocean.
3.Shipment via Express, Air, Ocean.
Quality Control
Remarks
1.we has 10 years experience in producing magnet and we can produce magnet according to your own      specifications or designs.
2. we own a professional team to ensure high quality products , and strict managment to ensure timely  delivery and perfect after-sales service.
3.Regarding the cost, we would like to offer the best competitive price for our clients.
4.Samples are always available.
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1. Product name:
2. Product introduction:
AKD High Polymer Emulsifier (instead of traditional cationic starch based) is a kind of cationic polymer product developed by our technical department,which is the initiative developed product in the market.It can not only emulsify AKD Wax ,but also proteched the AKD colloid dispersion and aid retention,it also can increase AKD sizing efficiency(2%-8%).It can get the high stability and better fixing effect AKD emulsion by mechanical stirring,in the meantime it greatly decrease AKD hygrolysis during storage and sizing process.Final AKD Emulsion shelf time is about 6 months which is longer than starch emulsified AKD emulsion.The final AKD Emulsion also has quicker curing effect.
3.Specification and Index:
|
Item |
Specification |
|
Appearance |
light yellow viscosity liquid |
|
Solid content |
40%min |
|
Viscosity,mPa.s,25°C |
2000-10000 mPa.s |
|
pH value |
2-5 |
|
shelf life |
6 months |
4. Application:
This Emulsifier greatly restricts the AKD hydrolysis and the migration aptitude.It can replace the Starch Based Emulsifier and AKD Curing Agent,at the same time decrease the AKD WAX using quantity.The final AKD Emulsion by this high polymer emulsifier can realize 80% sizing effect after paper machine,and almost totally realize after rewinding,which can let the paper immediately get the good water resistance effect,so less surface sizing agent in size press can fulfill all the sizing requirement.For detail using method,please contact Greatland Chemicals Co.,Ltd.
5. Package and storage:
It should be stored in the warehouse with dry and cool condition protected from frozen and sunlight directly. The temperature should be below 30°C.
Packing with 200kg, 1000kg/drum.
High Polymer Emulsifier
High Polymer Emulsifier,40% High Polymer Emulsifier,AKD High Polymer Emulsifier,AKD Emulsifying Agent
Shandong Tiancheng Chemical Co., Ltd. , https://www.akdchemical.nl