China Magnet Magnetics Industrial Material

introductionAsamarium-cobalt (SmCo)magnet, a type ofrare earth magnet, is a strongpermanent magnetmade of two basic elementssamariumandcobalt. Actually, samarium is substituted by a portion of otherrare earth elementsincludingpraseodymium,ceriumandgadolinium, and cobalt issubstituted by a portion of othertransition metalsincludingiron,copperandzirconium. They are available in two "series", namely SmCo5magnets and Sm2Co17magnets.They were developed in the early 1960s based on work done by Karl Strnat and Alden Ray atWright-Patterson Air Force baseand theUniversity of Dayton, respectively. In particular, Strnat and Ray developed the first formulation of SmCo5. They are generally ranked similarly in strength toneodymium magnets,but have higher temperature ratings and highercoercivity. They are brittle, and prone to cracking and chipping. Samarium-cobalt magnets have maximum energy products (BHmax) that range from 14megagauss-oersteds (MG·Oe)to 33 MG·Oe, that is approx. 112 kJ/m3to 264 kJ/m3; their theoretical limit is 34 MAnti-Static G·Oe, about 272 kJ/m3.
Sintered Industrial D Printer Samarium Cobalt magnets exhibit magneticanisotropy, meaning they can only be magnetized in the axis of their magnetic orientation. This is done by aligning the crystal structure of the material during the manufacturing process.Samarium Cobalt Magnet is mainly made of Cobalt,Samarium and other rare earth elements. Its advantage is the maximum operating temperature up to 300ºC and its good corrosion and oxidation resistance. Gift Box & Bag Samarium Cobalt Magnets, therefore do not need to be coated. It is widely used in motors, meters, sensors, detectors, engine, rada and other high-tech fields.
features
SmCo Magnet features
SmCo Magnet has very low temperature coefficient (-0.030% / °C), high temperature (maximumtemperature is 350 °C), the working temperature above 180 °C.
SmCo Magnet also has the maximum energy product.
SmCo Magnet's temperature stability and chemical stability are better than NdFeB material.
SmCo Magnet also has a strong anti-corrosion and oxidation resistanceBasis Magnetic Property:
Maximum working temperature: 250-350°C
Maximum Energy Product: (Bhmax)(15-35 MGOe)
Maximum Working Temperature: (Temp.Tw) 250-350
Induction Coercive Force: (Hcb) 4-12(Koe)
Residual Magnetism: Br 0.8-1.2(T)
Reversible temperature coefficient of residual magnetism (Br) -0.04 --- -0.01
SmCo magnetsarehigh performance, low temperature coefficientpermanent magnets.
Its biggest advantage is high working temperature-300 degree centigrade, this makesSamarium Cobaltan excellent choice for compact designs where high temperature environments may be present.
Good corrosion resistance and no need to be coating, because it is difficult to be eroded and oxidized.
Grinding and slicing can be operated into the desired shape and size.
Applications
Computer disc drives, sensors, traveling wave tubes, linear actuators, satellite systems, motors where temporary stability is vital.Applications of Neodymium MagnetsLinear Actuators Microphone Assemblies DC Motors(Automotive starter) Servo MotorsMagnetic SeparatorsComputer rigid disc drivers,printers and speakers
Attributes of NdFeB MaterialVery high resistance to demagnetizationHigh energy for sizeGood in ambient temperatureModerately pricedMaterial is corrosive and should be coated for long term maximum energy outputSmCo permanent magnets have strong resistance to corrosion and oxidability, which are widely applied to aviation, and aerospace, national defense and military industry, microwave components, communication, therapy equipments, instruments, apparatus, various kinds of magnetic transmission devices sensors, magnetic processer, motor and magnetic lifting machines.Because of magnetic stability, heat resistance and Strong corrosion resistance, SmCo is widely used foraerospace, defense industry, microwave devices, communications, medical equipment, instruments, meters, all kinds of magnetic transmission devices, sensors, magnetic processors, motors, magnetic cranes and so on.Machining and tolerances
We achieve dimensional size and tolerance by cutting or grinding with super abrasives. Samarium Cobalt (SmCo) cannot be ground with conventional drilling, turning or milling processes, and must be machined before they are magnetized. Additionally, large or complex assemblies are usually magnetized prior to assembly. Standard tolerances for Samarium Cobalt magnets are +/-.05mm for ground dimensions. We stocks SmCo magnets in block, ring and disc form in a variety of sizes and grades, and we are fully equipped to produce the size and tolerance that you require.
1:5 alloy material
1:5 offers 16 MGOe (energy product) to 22 MGOe and is made up of approximately 50% samarium and 50% cobalt. The 1:5 series has a maximum recommended operating temperature of 250°C. SmCo 1:5 magnets require lower field strengths than 2:17 materials to magnetize. In some instances, 1:15 material may be magnetized with multiple poles, provided that a magnetizing fixture is available.2:17 alloy material
2:17 offers 24 MGOe to 32 MGOe and is composed of about 25% samarium, 5% coppEnvironment Protection Device er, 18% iron, 2% hafnium or zirconium, with the remainder being cobalt. The 2:17 series of has a maximum operating temperature of 350°C. Special grades of 2:17 are available which can operate to even higher temperatures. SmCo 2:17 requires extremely high magnetizing fields, and multiple pole magnetization is notFeeder possible.
Production Process of Samarium Cobalt Permanent Magnet:
Powder process→ Pressing→ Sintering → Magnetic property test → cutting → finished products
Samarium cobalt materials are commonly processed under un-magnetized circumstances, with diamond grind wheel and wet fine grinding, which is necessary. Because of low ignition temperature, samarium cobalt must not be dry completely. Just a small spark or static electricity in production can easily trigger a fire, with extremely high temperature, which is hard to control.